"""
Unit tests for the extension system.

Tests cover:
- Extension manifest validation
- Extension registry operations
- Extension manager installation/removal
- Command registration
- Catalog stack (multi-catalog support)
"""

import pytest
import json
import tempfile
import shutil
from pathlib import Path
from datetime import datetime, timezone

from specify_cli.extensions import (
    CatalogEntry,
    ExtensionManifest,
    ExtensionRegistry,
    ExtensionManager,
    CommandRegistrar,
    ExtensionCatalog,
    ExtensionError,
    ValidationError,
    CompatibilityError,
    version_satisfies,
)


# ===== Fixtures =====

@pytest.fixture
def temp_dir():
    """Create a temporary directory for tests."""
    tmpdir = tempfile.mkdtemp()
    yield Path(tmpdir)
    shutil.rmtree(tmpdir)


@pytest.fixture
def valid_manifest_data():
    """Valid extension manifest data."""
    return {
        "schema_version": "1.0",
        "extension": {
            "id": "test-ext",
            "name": "Test Extension",
            "version": "1.0.0",
            "description": "A test extension",
            "author": "Test Author",
            "repository": "https://github.com/test/test-ext",
            "license": "MIT",
        },
        "requires": {
            "speckit_version": ">=0.1.0",
            "commands": ["speckit.tasks"],
        },
        "provides": {
            "commands": [
                {
                    "name": "speckit.test.hello",
                    "file": "commands/hello.md",
                    "description": "Test command",
                }
            ]
        },
        "hooks": {
            "after_tasks": {
                "command": "speckit.test.hello",
                "optional": True,
                "prompt": "Run test?",
            }
        },
        "tags": ["testing", "example"],
    }


@pytest.fixture
def extension_dir(temp_dir, valid_manifest_data):
    """Create a complete extension directory structure."""
    ext_dir = temp_dir / "test-ext"
    ext_dir.mkdir()

    # Write manifest
    import yaml
    manifest_path = ext_dir / "extension.yml"
    with open(manifest_path, 'w') as f:
        yaml.dump(valid_manifest_data, f)

    # Create commands directory
    commands_dir = ext_dir / "commands"
    commands_dir.mkdir()

    # Write command file
    cmd_file = commands_dir / "hello.md"
    cmd_file.write_text("""---
description: "Test hello command"
---

# Test Hello Command

$ARGUMENTS
""")

    return ext_dir


@pytest.fixture
def project_dir(temp_dir):
    """Create a mock spec-kit project directory."""
    proj_dir = temp_dir / "project"
    proj_dir.mkdir()

    # Create .specify directory
    specify_dir = proj_dir / ".specify"
    specify_dir.mkdir()

    return proj_dir


# ===== ExtensionManifest Tests =====

class TestExtensionManifest:
    """Test ExtensionManifest validation and parsing."""

    def test_valid_manifest(self, extension_dir):
        """Test loading a valid manifest."""
        manifest_path = extension_dir / "extension.yml"
        manifest = ExtensionManifest(manifest_path)

        assert manifest.id == "test-ext"
        assert manifest.name == "Test Extension"
        assert manifest.version == "1.0.0"
        assert manifest.description == "A test extension"
        assert len(manifest.commands) == 1
        assert manifest.commands[0]["name"] == "speckit.test.hello"

    def test_missing_required_field(self, temp_dir):
        """Test manifest missing required field."""
        import yaml

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump({"schema_version": "1.0"}, f)  # Missing 'extension'

        with pytest.raises(ValidationError, match="Missing required field"):
            ExtensionManifest(manifest_path)

    def test_invalid_extension_id(self, temp_dir, valid_manifest_data):
        """Test manifest with invalid extension ID format."""
        import yaml

        valid_manifest_data["extension"]["id"] = "Invalid_ID"  # Uppercase not allowed

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid extension ID"):
            ExtensionManifest(manifest_path)

    def test_invalid_version(self, temp_dir, valid_manifest_data):
        """Test manifest with invalid semantic version."""
        import yaml

        valid_manifest_data["extension"]["version"] = "invalid"

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid version"):
            ExtensionManifest(manifest_path)

    def test_invalid_command_name(self, temp_dir, valid_manifest_data):
        """Test manifest with invalid command name format."""
        import yaml

        valid_manifest_data["provides"]["commands"][0]["name"] = "invalid-name"

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid command name"):
            ExtensionManifest(manifest_path)

    def test_no_commands(self, temp_dir, valid_manifest_data):
        """Test manifest with no commands provided."""
        import yaml

        valid_manifest_data["provides"]["commands"] = []

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="must provide at least one command"):
            ExtensionManifest(manifest_path)

    def test_manifest_hash(self, extension_dir):
        """Test manifest hash calculation."""
        manifest_path = extension_dir / "extension.yml"
        manifest = ExtensionManifest(manifest_path)

        hash_value = manifest.get_hash()
        assert hash_value.startswith("sha256:")
        assert len(hash_value) > 10


# ===== ExtensionRegistry Tests =====

class TestExtensionRegistry:
    """Test ExtensionRegistry operations."""

    def test_empty_registry(self, temp_dir):
        """Test creating a new empty registry."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)

        assert registry.data["schema_version"] == "1.0"
        assert registry.data["extensions"] == {}
        assert len(registry.list()) == 0

    def test_add_extension(self, temp_dir):
        """Test adding an extension to registry."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)

        metadata = {
            "version": "1.0.0",
            "source": "local",
            "enabled": True,
        }
        registry.add("test-ext", metadata)

        assert registry.is_installed("test-ext")
        ext_data = registry.get("test-ext")
        assert ext_data["version"] == "1.0.0"
        assert "installed_at" in ext_data

    def test_remove_extension(self, temp_dir):
        """Test removing an extension from registry."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "1.0.0"})

        assert registry.is_installed("test-ext")

        registry.remove("test-ext")

        assert not registry.is_installed("test-ext")
        assert registry.get("test-ext") is None

    def test_registry_persistence(self, temp_dir):
        """Test that registry persists to disk."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        # Create registry and add extension
        registry1 = ExtensionRegistry(extensions_dir)
        registry1.add("test-ext", {"version": "1.0.0"})

        # Load new registry instance
        registry2 = ExtensionRegistry(extensions_dir)

        # Should still have the extension
        assert registry2.is_installed("test-ext")
        assert registry2.get("test-ext")["version"] == "1.0.0"

    def test_update_preserves_installed_at(self, temp_dir):
        """Test that update() preserves the original installed_at timestamp."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "1.0.0", "enabled": True})

        # Get original installed_at
        original_data = registry.get("test-ext")
        original_installed_at = original_data["installed_at"]

        # Update with new metadata
        registry.update("test-ext", {"version": "2.0.0", "enabled": False})

        # Verify installed_at is preserved
        updated_data = registry.get("test-ext")
        assert updated_data["installed_at"] == original_installed_at
        assert updated_data["version"] == "2.0.0"
        assert updated_data["enabled"] is False

    def test_update_merges_with_existing(self, temp_dir):
        """Test that update() merges new metadata with existing fields."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {
            "version": "1.0.0",
            "enabled": True,
            "registered_commands": {"claude": ["cmd1", "cmd2"]},
        })

        # Update with partial metadata (only enabled field)
        registry.update("test-ext", {"enabled": False})

        # Verify existing fields are preserved
        updated_data = registry.get("test-ext")
        assert updated_data["enabled"] is False
        assert updated_data["version"] == "1.0.0"  # Preserved
        assert updated_data["registered_commands"] == {"claude": ["cmd1", "cmd2"]}  # Preserved

    def test_update_raises_for_missing_extension(self, temp_dir):
        """Test that update() raises KeyError for non-installed extension."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)

        with pytest.raises(KeyError, match="not installed"):
            registry.update("nonexistent-ext", {"enabled": False})

    def test_restore_overwrites_completely(self, temp_dir):
        """Test that restore() overwrites the registry entry completely."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "2.0.0", "enabled": True})

        # Restore with complete backup data
        backup_data = {
            "version": "1.0.0",
            "enabled": False,
            "installed_at": "2024-01-01T00:00:00+00:00",
            "registered_commands": {"claude": ["old-cmd"]},
        }
        registry.restore("test-ext", backup_data)

        # Verify entry is exactly as restored
        restored_data = registry.get("test-ext")
        assert restored_data == backup_data

    def test_restore_can_recreate_removed_entry(self, temp_dir):
        """Test that restore() can recreate an entry after remove()."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "1.0.0"})

        # Save backup and remove
        backup = registry.get("test-ext").copy()
        registry.remove("test-ext")
        assert not registry.is_installed("test-ext")

        # Restore should recreate the entry
        registry.restore("test-ext", backup)
        assert registry.is_installed("test-ext")
        assert registry.get("test-ext")["version"] == "1.0.0"

    def test_get_returns_deep_copy(self, temp_dir):
        """Test that get() returns deep copies for nested structures."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        metadata = {
            "version": "1.0.0",
            "registered_commands": {"claude": ["cmd1"]},
        }
        registry.add("test-ext", metadata)

        fetched = registry.get("test-ext")
        fetched["registered_commands"]["claude"].append("cmd2")

        # Internal registry must remain unchanged.
        internal = registry.data["extensions"]["test-ext"]
        assert internal["registered_commands"] == {"claude": ["cmd1"]}

    def test_list_returns_deep_copy(self, temp_dir):
        """Test that list() returns deep copies for nested structures."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        metadata = {
            "version": "1.0.0",
            "registered_commands": {"claude": ["cmd1"]},
        }
        registry.add("test-ext", metadata)

        listed = registry.list()
        listed["test-ext"]["registered_commands"]["claude"].append("cmd2")

        # Internal registry must remain unchanged.
        internal = registry.data["extensions"]["test-ext"]
        assert internal["registered_commands"] == {"claude": ["cmd1"]}


# ===== ExtensionManager Tests =====

class TestExtensionManager:
    """Test ExtensionManager installation and removal."""

    def test_check_compatibility_valid(self, extension_dir, project_dir):
        """Test compatibility check with valid version."""
        manager = ExtensionManager(project_dir)
        manifest = ExtensionManifest(extension_dir / "extension.yml")

        # Should not raise
        result = manager.check_compatibility(manifest, "0.1.0")
        assert result is True

    def test_check_compatibility_invalid(self, extension_dir, project_dir):
        """Test compatibility check with invalid version."""
        manager = ExtensionManager(project_dir)
        manifest = ExtensionManifest(extension_dir / "extension.yml")

        # Requires >=0.1.0, but we have 0.0.1
        with pytest.raises(CompatibilityError, match="Extension requires spec-kit"):
            manager.check_compatibility(manifest, "0.0.1")

    def test_install_from_directory(self, extension_dir, project_dir):
        """Test installing extension from directory."""
        manager = ExtensionManager(project_dir)

        manifest = manager.install_from_directory(
            extension_dir,
            "0.1.0",
            register_commands=False  # Skip command registration for now
        )

        assert manifest.id == "test-ext"
        assert manager.registry.is_installed("test-ext")

        # Check extension directory was copied
        ext_dir = project_dir / ".specify" / "extensions" / "test-ext"
        assert ext_dir.exists()
        assert (ext_dir / "extension.yml").exists()
        assert (ext_dir / "commands" / "hello.md").exists()

    def test_install_duplicate(self, extension_dir, project_dir):
        """Test installing already installed extension."""
        manager = ExtensionManager(project_dir)

        # Install once
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Try to install again
        with pytest.raises(ExtensionError, match="already installed"):
            manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

    def test_remove_extension(self, extension_dir, project_dir):
        """Test removing an installed extension."""
        manager = ExtensionManager(project_dir)

        # Install extension
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        ext_dir = project_dir / ".specify" / "extensions" / "test-ext"
        assert ext_dir.exists()

        # Remove extension
        result = manager.remove("test-ext", keep_config=False)

        assert result is True
        assert not manager.registry.is_installed("test-ext")
        assert not ext_dir.exists()

    def test_remove_nonexistent(self, project_dir):
        """Test removing non-existent extension."""
        manager = ExtensionManager(project_dir)

        result = manager.remove("nonexistent")
        assert result is False

    def test_list_installed(self, extension_dir, project_dir):
        """Test listing installed extensions."""
        manager = ExtensionManager(project_dir)

        # Initially empty
        assert len(manager.list_installed()) == 0

        # Install extension
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Should have one extension
        installed = manager.list_installed()
        assert len(installed) == 1
        assert installed[0]["id"] == "test-ext"
        assert installed[0]["name"] == "Test Extension"
        assert installed[0]["version"] == "1.0.0"
        assert installed[0]["command_count"] == 1
        assert installed[0]["hook_count"] == 1

    def test_config_backup_on_remove(self, extension_dir, project_dir):
        """Test that config files are backed up on removal."""
        manager = ExtensionManager(project_dir)

        # Install extension
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Create a config file
        ext_dir = project_dir / ".specify" / "extensions" / "test-ext"
        config_file = ext_dir / "test-ext-config.yml"
        config_file.write_text("test: config")

        # Remove extension (without keep_config)
        manager.remove("test-ext", keep_config=False)

        # Check backup was created (now in subdirectory per extension)
        backup_dir = project_dir / ".specify" / "extensions" / ".backup" / "test-ext"
        backup_file = backup_dir / "test-ext-config.yml"
        assert backup_file.exists()
        assert backup_file.read_text() == "test: config"


# ===== CommandRegistrar Tests =====

class TestCommandRegistrar:
    """Test CommandRegistrar command registration."""

    def test_kiro_cli_agent_config_present(self):
        """Kiro CLI should be mapped to .kiro/prompts and legacy q removed."""
        assert "kiro-cli" in CommandRegistrar.AGENT_CONFIGS
        assert CommandRegistrar.AGENT_CONFIGS["kiro-cli"]["dir"] == ".kiro/prompts"
        assert "q" not in CommandRegistrar.AGENT_CONFIGS

    def test_codex_agent_config_present(self):
        """Codex should be mapped to .codex/prompts."""
        assert "codex" in CommandRegistrar.AGENT_CONFIGS
        assert CommandRegistrar.AGENT_CONFIGS["codex"]["dir"] == ".codex/prompts"

    def test_parse_frontmatter_valid(self):
        """Test parsing valid YAML frontmatter."""
        content = """---
description: "Test command"
tools:
  - tool1
  - tool2
---

# Command body
$ARGUMENTS
"""
        registrar = CommandRegistrar()
        frontmatter, body = registrar.parse_frontmatter(content)

        assert frontmatter["description"] == "Test command"
        assert frontmatter["tools"] == ["tool1", "tool2"]
        assert "Command body" in body
        assert "$ARGUMENTS" in body

    def test_parse_frontmatter_no_frontmatter(self):
        """Test parsing content without frontmatter."""
        content = "# Just a command\n$ARGUMENTS"

        registrar = CommandRegistrar()
        frontmatter, body = registrar.parse_frontmatter(content)

        assert frontmatter == {}
        assert body == content

    def test_render_frontmatter(self):
        """Test rendering frontmatter to YAML."""
        frontmatter = {
            "description": "Test command",
            "tools": ["tool1", "tool2"]
        }

        registrar = CommandRegistrar()
        output = registrar.render_frontmatter(frontmatter)

        assert output.startswith("---\n")
        assert output.endswith("---\n")
        assert "description: Test command" in output

    def test_register_commands_for_claude(self, extension_dir, project_dir):
        """Test registering commands for Claude agent."""
        # Create .claude directory
        claude_dir = project_dir / ".claude" / "commands"
        claude_dir.mkdir(parents=True)

        ExtensionManager(project_dir)  # Initialize manager (side effects only)
        manifest = ExtensionManifest(extension_dir / "extension.yml")

        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_claude(
            manifest,
            extension_dir,
            project_dir
        )

        assert len(registered) == 1
        assert "speckit.test.hello" in registered

        # Check command file was created
        cmd_file = claude_dir / "speckit.test.hello.md"
        assert cmd_file.exists()

        content = cmd_file.read_text()
        assert "description: Test hello command" in content
        assert "<!-- Extension: test-ext -->" in content
        assert "<!-- Config: .specify/extensions/test-ext/ -->" in content

    def test_command_with_aliases(self, project_dir, temp_dir):
        """Test registering a command with aliases."""
        import yaml

        # Create extension with command alias
        ext_dir = temp_dir / "ext-alias"
        ext_dir.mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-alias",
                "name": "Extension with Alias",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {
                "speckit_version": ">=0.1.0",
            },
            "provides": {
                "commands": [
                    {
                        "name": "speckit.alias.cmd",
                        "file": "commands/cmd.md",
                        "aliases": ["speckit.shortcut"],
                    }
                ]
            },
        }

        with open(ext_dir / "extension.yml", 'w') as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands").mkdir()
        (ext_dir / "commands" / "cmd.md").write_text("---\ndescription: Test\n---\n\nTest")

        claude_dir = project_dir / ".claude" / "commands"
        claude_dir.mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_claude(manifest, ext_dir, project_dir)

        assert len(registered) == 2
        assert "speckit.alias.cmd" in registered
        assert "speckit.shortcut" in registered
        assert (claude_dir / "speckit.alias.cmd.md").exists()
        assert (claude_dir / "speckit.shortcut.md").exists()

    def test_register_commands_for_copilot(self, extension_dir, project_dir):
        """Test registering commands for Copilot agent with .agent.md extension."""
        # Create .github/agents directory (Copilot project)
        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)

        manifest = ExtensionManifest(extension_dir / "extension.yml")

        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_agent(
            "copilot", manifest, extension_dir, project_dir
        )

        assert len(registered) == 1
        assert "speckit.test.hello" in registered

        # Verify command file uses .agent.md extension
        cmd_file = agents_dir / "speckit.test.hello.agent.md"
        assert cmd_file.exists()

        # Verify NO plain .md file was created
        plain_md_file = agents_dir / "speckit.test.hello.md"
        assert not plain_md_file.exists()

        content = cmd_file.read_text()
        assert "description: Test hello command" in content
        assert "<!-- Extension: test-ext -->" in content

    def test_copilot_companion_prompt_created(self, extension_dir, project_dir):
        """Test that companion .prompt.md files are created in .github/prompts/."""
        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)

        manifest = ExtensionManifest(extension_dir / "extension.yml")

        registrar = CommandRegistrar()
        registrar.register_commands_for_agent(
            "copilot", manifest, extension_dir, project_dir
        )

        # Verify companion .prompt.md file exists
        prompt_file = project_dir / ".github" / "prompts" / "speckit.test.hello.prompt.md"
        assert prompt_file.exists()

        # Verify content has correct agent frontmatter
        content = prompt_file.read_text()
        assert content == "---\nagent: speckit.test.hello\n---\n"

    def test_copilot_aliases_get_companion_prompts(self, project_dir, temp_dir):
        """Test that aliases also get companion .prompt.md files for Copilot."""
        import yaml

        ext_dir = temp_dir / "ext-alias-copilot"
        ext_dir.mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-alias-copilot",
                "name": "Extension with Alias",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.alias-copilot.cmd",
                        "file": "commands/cmd.md",
                        "aliases": ["speckit.shortcut-copilot"],
                    }
                ]
            },
        }

        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands").mkdir()
        (ext_dir / "commands" / "cmd.md").write_text(
            "---\ndescription: Test\n---\n\nTest"
        )

        # Set up Copilot project
        (project_dir / ".github" / "agents").mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_agent(
            "copilot", manifest, ext_dir, project_dir
        )

        assert len(registered) == 2

        # Both primary and alias get companion .prompt.md
        prompts_dir = project_dir / ".github" / "prompts"
        assert (prompts_dir / "speckit.alias-copilot.cmd.prompt.md").exists()
        assert (prompts_dir / "speckit.shortcut-copilot.prompt.md").exists()

    def test_non_copilot_agent_no_companion_file(self, extension_dir, project_dir):
        """Test that non-copilot agents do NOT create .prompt.md files."""
        claude_dir = project_dir / ".claude" / "commands"
        claude_dir.mkdir(parents=True)

        manifest = ExtensionManifest(extension_dir / "extension.yml")

        registrar = CommandRegistrar()
        registrar.register_commands_for_agent(
            "claude", manifest, extension_dir, project_dir
        )

        # No .github/prompts directory should exist
        prompts_dir = project_dir / ".github" / "prompts"
        assert not prompts_dir.exists()


# ===== Utility Function Tests =====

class TestVersionSatisfies:
    """Test version_satisfies utility function."""

    def test_version_satisfies_simple(self):
        """Test simple version comparison."""
        assert version_satisfies("1.0.0", ">=1.0.0")
        assert version_satisfies("1.0.1", ">=1.0.0")
        assert not version_satisfies("0.9.9", ">=1.0.0")

    def test_version_satisfies_range(self):
        """Test version range."""
        assert version_satisfies("1.5.0", ">=1.0.0,<2.0.0")
        assert not version_satisfies("2.0.0", ">=1.0.0,<2.0.0")
        assert not version_satisfies("0.9.0", ">=1.0.0,<2.0.0")

    def test_version_satisfies_complex(self):
        """Test complex version specifier."""
        assert version_satisfies("1.0.5", ">=1.0.0,!=1.0.3")
        assert not version_satisfies("1.0.3", ">=1.0.0,!=1.0.3")

    def test_version_satisfies_invalid(self):
        """Test invalid version strings."""
        assert not version_satisfies("invalid", ">=1.0.0")
        assert not version_satisfies("1.0.0", "invalid specifier")


# ===== Integration Tests =====

class TestIntegration:
    """Integration tests for complete workflows."""

    def test_full_install_and_remove_workflow(self, extension_dir, project_dir):
        """Test complete installation and removal workflow."""
        # Create Claude directory
        (project_dir / ".claude" / "commands").mkdir(parents=True)

        manager = ExtensionManager(project_dir)

        # Install
        manager.install_from_directory(
            extension_dir,
            "0.1.0",
            register_commands=True
        )

        # Verify installation
        assert manager.registry.is_installed("test-ext")
        installed = manager.list_installed()
        assert len(installed) == 1
        assert installed[0]["id"] == "test-ext"

        # Verify command registered
        cmd_file = project_dir / ".claude" / "commands" / "speckit.test.hello.md"
        assert cmd_file.exists()

        # Verify registry has registered commands (now a dict keyed by agent)
        metadata = manager.registry.get("test-ext")
        registered_commands = metadata["registered_commands"]
        # Check that the command is registered for at least one agent
        assert any(
            "speckit.test.hello" in cmds
            for cmds in registered_commands.values()
        )

        # Remove
        result = manager.remove("test-ext")
        assert result is True

        # Verify removal
        assert not manager.registry.is_installed("test-ext")
        assert not cmd_file.exists()
        assert len(manager.list_installed()) == 0

    def test_copilot_cleanup_removes_prompt_files(self, extension_dir, project_dir):
        """Test that removing a Copilot extension also removes .prompt.md files."""
        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)

        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=True)

        # Verify copilot was detected and registered
        metadata = manager.registry.get("test-ext")
        assert "copilot" in metadata["registered_commands"]

        # Verify files exist before cleanup
        agent_file = agents_dir / "speckit.test.hello.agent.md"
        prompt_file = project_dir / ".github" / "prompts" / "speckit.test.hello.prompt.md"
        assert agent_file.exists()
        assert prompt_file.exists()

        # Use the extension manager to remove — exercises the copilot prompt cleanup code
        result = manager.remove("test-ext")
        assert result is True

        assert not agent_file.exists()
        assert not prompt_file.exists()

    def test_multiple_extensions(self, temp_dir, project_dir):
        """Test installing multiple extensions."""
        import yaml

        # Create two extensions
        for i in range(1, 3):
            ext_dir = temp_dir / f"ext{i}"
            ext_dir.mkdir()

            manifest_data = {
                "schema_version": "1.0",
                "extension": {
                    "id": f"ext{i}",
                    "name": f"Extension {i}",
                    "version": "1.0.0",
                    "description": f"Extension {i}",
                },
                "requires": {"speckit_version": ">=0.1.0"},
                "provides": {
                    "commands": [
                        {
                            "name": f"speckit.ext{i}.cmd",
                            "file": "commands/cmd.md",
                        }
                    ]
                },
            }

            with open(ext_dir / "extension.yml", 'w') as f:
                yaml.dump(manifest_data, f)

            (ext_dir / "commands").mkdir()
            (ext_dir / "commands" / "cmd.md").write_text("---\ndescription: Test\n---\nTest")

        manager = ExtensionManager(project_dir)

        # Install both
        manager.install_from_directory(temp_dir / "ext1", "0.1.0", register_commands=False)
        manager.install_from_directory(temp_dir / "ext2", "0.1.0", register_commands=False)

        # Verify both installed
        installed = manager.list_installed()
        assert len(installed) == 2
        assert {ext["id"] for ext in installed} == {"ext1", "ext2"}

        # Remove first
        manager.remove("ext1")

        # Verify only second remains
        installed = manager.list_installed()
        assert len(installed) == 1
        assert installed[0]["id"] == "ext2"


# ===== Extension Catalog Tests =====


class TestExtensionCatalog:
    """Test extension catalog functionality."""

    def test_catalog_initialization(self, temp_dir):
        """Test catalog initialization."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        assert catalog.project_root == project_dir
        assert catalog.cache_dir == project_dir / ".specify" / "extensions" / ".cache"

    def test_cache_directory_creation(self, temp_dir):
        """Test catalog cache directory is created when fetching."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog data
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "test-ext": {
                    "name": "Test Extension",
                    "id": "test-ext",
                    "version": "1.0.0",
                    "description": "Test",
                }
            },
        }

        # Manually save to cache to test cache reading
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com/catalog.json",
                }
            )
        )

        # Should use cache
        result = catalog.fetch_catalog()
        assert result == catalog_data

    def test_cache_expiration(self, temp_dir):
        """Test that expired cache is not used."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        # Create expired cache
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog_data = {"schema_version": "1.0", "extensions": {}}
        catalog.cache_file.write_text(json.dumps(catalog_data))

        # Set cache time to 2 hours ago (expired)
        expired_time = datetime.now(timezone.utc).timestamp() - 7200
        expired_datetime = datetime.fromtimestamp(expired_time, tz=timezone.utc)
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": expired_datetime.isoformat(),
                    "catalog_url": "http://test.com/catalog.json",
                }
            )
        )

        # Cache should be invalid
        assert not catalog.is_cache_valid()

    def test_search_all_extensions(self, temp_dir):
        """Test searching all extensions without filters."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira integration",
                    "author": "Stats Perform",
                    "tags": ["issue-tracking", "jira"],
                    "verified": True,
                },
                "linear": {
                    "name": "Linear Integration",
                    "id": "linear",
                    "version": "0.9.0",
                    "description": "Linear integration",
                    "author": "Community",
                    "tags": ["issue-tracking"],
                    "verified": False,
                },
            },
        }

        # Save to cache
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Search without filters
        results = catalog.search()
        assert len(results) == 2

    def test_search_by_query(self, temp_dir):
        """Test searching by query text."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira issue tracking",
                    "tags": ["jira"],
                },
                "linear": {
                    "name": "Linear Integration",
                    "id": "linear",
                    "version": "1.0.0",
                    "description": "Linear project management",
                    "tags": ["linear"],
                },
            },
        }

        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Search for "jira"
        results = catalog.search(query="jira")
        assert len(results) == 1
        assert results[0]["id"] == "jira"

    def test_search_by_tag(self, temp_dir):
        """Test searching by tag."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira",
                    "tags": ["issue-tracking", "jira"],
                },
                "linear": {
                    "name": "Linear",
                    "id": "linear",
                    "version": "1.0.0",
                    "description": "Linear",
                    "tags": ["issue-tracking", "linear"],
                },
                "github": {
                    "name": "GitHub",
                    "id": "github",
                    "version": "1.0.0",
                    "description": "GitHub",
                    "tags": ["vcs", "github"],
                },
            },
        }

        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Search by tag "issue-tracking"
        results = catalog.search(tag="issue-tracking")
        assert len(results) == 2
        assert {r["id"] for r in results} == {"jira", "linear"}

    def test_search_verified_only(self, temp_dir):
        """Test searching verified extensions only."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira",
                    "verified": True,
                },
                "linear": {
                    "name": "Linear",
                    "id": "linear",
                    "version": "1.0.0",
                    "description": "Linear",
                    "verified": False,
                },
            },
        }

        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Search verified only
        results = catalog.search(verified_only=True)
        assert len(results) == 1
        assert results[0]["id"] == "jira"

    def test_get_extension_info(self, temp_dir):
        """Test getting specific extension info."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira integration",
                    "author": "Stats Perform",
                },
            },
        }

        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Get extension info
        info = catalog.get_extension_info("jira")
        assert info is not None
        assert info["id"] == "jira"
        assert info["name"] == "Jira Integration"

        # Non-existent extension
        info = catalog.get_extension_info("nonexistent")
        assert info is None

    def test_clear_cache(self, temp_dir):
        """Test clearing catalog cache."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        # Create cache
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text("{}")
        catalog.cache_metadata_file.write_text("{}")

        assert catalog.cache_file.exists()
        assert catalog.cache_metadata_file.exists()

        # Clear cache
        catalog.clear_cache()

        assert not catalog.cache_file.exists()
        assert not catalog.cache_metadata_file.exists()


# ===== CatalogEntry Tests =====

class TestCatalogEntry:
    """Test CatalogEntry dataclass."""

    def test_catalog_entry_creation(self):
        """Test creating a CatalogEntry."""
        entry = CatalogEntry(
            url="https://example.com/catalog.json",
            name="test",
            priority=1,
            install_allowed=True,
        )
        assert entry.url == "https://example.com/catalog.json"
        assert entry.name == "test"
        assert entry.priority == 1
        assert entry.install_allowed is True


# ===== Catalog Stack Tests =====

class TestCatalogStack:
    """Test multi-catalog stack support."""

    def _make_project(self, temp_dir: Path) -> Path:
        """Create a minimal spec-kit project directory."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        return project_dir

    def _write_catalog_config(self, project_dir: Path, catalogs: list) -> None:
        """Write extension-catalogs.yml to project .specify dir."""
        import yaml as yaml_module

        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump({"catalogs": catalogs}, f)

    def _write_valid_cache(
        self, catalog: ExtensionCatalog, extensions: dict, url: str = "http://test.com"
    ) -> None:
        """Populate the primary cache file with mock extension data."""
        catalog_data = {"schema_version": "1.0", "extensions": extensions}
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": url,
                }
            )
        )

    # --- get_active_catalogs ---

    def test_default_stack(self, temp_dir):
        """Default stack includes default and community catalogs."""
        project_dir = self._make_project(temp_dir)
        catalog = ExtensionCatalog(project_dir)

        entries = catalog.get_active_catalogs()

        assert len(entries) == 2
        assert entries[0].url == ExtensionCatalog.DEFAULT_CATALOG_URL
        assert entries[0].name == "default"
        assert entries[0].priority == 1
        assert entries[0].install_allowed is True
        assert entries[1].url == ExtensionCatalog.COMMUNITY_CATALOG_URL
        assert entries[1].name == "community"
        assert entries[1].priority == 2
        assert entries[1].install_allowed is False

    def test_env_var_overrides_default_stack(self, temp_dir, monkeypatch):
        """SPECKIT_CATALOG_URL replaces the entire default stack."""
        project_dir = self._make_project(temp_dir)
        custom_url = "https://example.com/catalog.json"
        monkeypatch.setenv("SPECKIT_CATALOG_URL", custom_url)

        catalog = ExtensionCatalog(project_dir)
        entries = catalog.get_active_catalogs()

        assert len(entries) == 1
        assert entries[0].url == custom_url
        assert entries[0].install_allowed is True

    def test_env_var_invalid_url_raises(self, temp_dir, monkeypatch):
        """SPECKIT_CATALOG_URL with http:// (non-localhost) raises ValidationError."""
        project_dir = self._make_project(temp_dir)
        monkeypatch.setenv("SPECKIT_CATALOG_URL", "http://example.com/catalog.json")

        catalog = ExtensionCatalog(project_dir)
        with pytest.raises(ValidationError, match="HTTPS"):
            catalog.get_active_catalogs()

    def test_project_config_overrides_defaults(self, temp_dir):
        """Project-level extension-catalogs.yml overrides default stack."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "custom",
                    "url": "https://example.com/catalog.json",
                    "priority": 1,
                    "install_allowed": True,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        entries = catalog.get_active_catalogs()

        assert len(entries) == 1
        assert entries[0].url == "https://example.com/catalog.json"
        assert entries[0].name == "custom"

    def test_project_config_sorted_by_priority(self, temp_dir):
        """Catalog entries are sorted by priority (ascending)."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "secondary",
                    "url": "https://example.com/secondary.json",
                    "priority": 5,
                    "install_allowed": False,
                },
                {
                    "name": "primary",
                    "url": "https://example.com/primary.json",
                    "priority": 1,
                    "install_allowed": True,
                },
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        entries = catalog.get_active_catalogs()

        assert len(entries) == 2
        assert entries[0].name == "primary"
        assert entries[1].name == "secondary"

    def test_project_config_invalid_url_raises(self, temp_dir):
        """Project config with HTTP (non-localhost) URL raises ValidationError."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "bad",
                    "url": "http://example.com/catalog.json",
                    "priority": 1,
                    "install_allowed": True,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        with pytest.raises(ValidationError, match="HTTPS"):
            catalog.get_active_catalogs()

    def test_empty_project_config_raises_error(self, temp_dir):
        """Empty catalogs list in config raises ValidationError (fail-closed for security)."""
        import yaml as yaml_module

        project_dir = self._make_project(temp_dir)
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump({"catalogs": []}, f)

        catalog = ExtensionCatalog(project_dir)

        # Fail-closed: empty config should raise, not fall back to defaults
        with pytest.raises(ValidationError) as exc_info:
            catalog.get_active_catalogs()
        assert "contains no 'catalogs' entries" in str(exc_info.value)

    def test_catalog_entries_without_urls_raises_error(self, temp_dir):
        """Catalog entries without URLs raise ValidationError (fail-closed for security)."""
        import yaml as yaml_module

        project_dir = self._make_project(temp_dir)
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump({
                "catalogs": [
                    {"name": "no-url-catalog", "priority": 1},
                    {"name": "another-no-url", "description": "Also missing URL"},
                ]
            }, f)

        catalog = ExtensionCatalog(project_dir)

        # Fail-closed: entries without URLs should raise, not fall back to defaults
        with pytest.raises(ValidationError) as exc_info:
            catalog.get_active_catalogs()
        assert "none have valid URLs" in str(exc_info.value)

    # --- _load_catalog_config ---

    def test_load_catalog_config_missing_file(self, temp_dir):
        """Returns None when config file doesn't exist."""
        project_dir = self._make_project(temp_dir)
        catalog = ExtensionCatalog(project_dir)

        result = catalog._load_catalog_config(project_dir / ".specify" / "nonexistent.yml")
        assert result is None

    def test_load_catalog_config_localhost_allowed(self, temp_dir):
        """Localhost HTTP URLs are allowed in config."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "local",
                    "url": "http://localhost:8000/catalog.json",
                    "priority": 1,
                    "install_allowed": True,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        entries = catalog.get_active_catalogs()

        assert len(entries) == 1
        assert entries[0].url == "http://localhost:8000/catalog.json"

    # --- Merge conflict resolution ---

    def test_merge_conflict_higher_priority_wins(self, temp_dir):
        """When same extension id is in two catalogs, higher priority wins."""
        project_dir = self._make_project(temp_dir)

        # Write project config with two catalogs
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "primary",
                    "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                    "priority": 1,
                    "install_allowed": True,
                },
                {
                    "name": "secondary",
                    "url": ExtensionCatalog.COMMUNITY_CATALOG_URL,
                    "priority": 2,
                    "install_allowed": False,
                },
            ],
        )

        catalog = ExtensionCatalog(project_dir)

        # Write primary cache with jira v2.0.0
        primary_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "2.0.0",
                    "description": "Primary Jira",
                }
            },
        }
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(primary_data))
        catalog.cache_metadata_file.write_text(
            json.dumps({"cached_at": datetime.now(timezone.utc).isoformat(), "catalog_url": "http://test.com"})
        )

        # Write secondary cache (URL-hash-based) with jira v1.0.0 (should lose)
        import hashlib

        url_hash = hashlib.sha256(ExtensionCatalog.COMMUNITY_CATALOG_URL.encode()).hexdigest()[:16]
        secondary_cache = catalog.cache_dir / f"catalog-{url_hash}.json"
        secondary_meta = catalog.cache_dir / f"catalog-{url_hash}-metadata.json"
        secondary_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration Community",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Community Jira",
                },
                "linear": {
                    "name": "Linear",
                    "id": "linear",
                    "version": "0.9.0",
                    "description": "Linear from secondary",
                },
            },
        }
        secondary_cache.write_text(json.dumps(secondary_data))
        secondary_meta.write_text(
            json.dumps({"cached_at": datetime.now(timezone.utc).isoformat(), "catalog_url": ExtensionCatalog.COMMUNITY_CATALOG_URL})
        )

        results = catalog.search()
        jira_results = [r for r in results if r["id"] == "jira"]
        assert len(jira_results) == 1
        # Primary catalog wins
        assert jira_results[0]["version"] == "2.0.0"
        assert jira_results[0]["_catalog_name"] == "primary"
        assert jira_results[0]["_install_allowed"] is True

        # linear comes from secondary
        linear_results = [r for r in results if r["id"] == "linear"]
        assert len(linear_results) == 1
        assert linear_results[0]["_catalog_name"] == "secondary"
        assert linear_results[0]["_install_allowed"] is False

    def test_install_allowed_false_from_get_extension_info(self, temp_dir):
        """get_extension_info includes _install_allowed from source catalog."""
        project_dir = self._make_project(temp_dir)

        # Single catalog that is install_allowed=False
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "discovery",
                    "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                    "priority": 1,
                    "install_allowed": False,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        self._write_valid_cache(
            catalog,
            {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira integration",
                }
            },
        )

        info = catalog.get_extension_info("jira")
        assert info is not None
        assert info["_install_allowed"] is False
        assert info["_catalog_name"] == "discovery"

    def test_search_results_include_catalog_metadata(self, temp_dir):
        """Search results include _catalog_name and _install_allowed."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "org",
                    "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                    "priority": 1,
                    "install_allowed": True,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        self._write_valid_cache(
            catalog,
            {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira integration",
                }
            },
        )

        results = catalog.search()
        assert len(results) == 1
        assert results[0]["_catalog_name"] == "org"
        assert results[0]["_install_allowed"] is True


class TestExtensionIgnore:
    """Test .extensionignore support during extension installation."""

    def _make_extension(self, temp_dir, valid_manifest_data, extra_files=None, ignore_content=None):
        """Helper to create an extension directory with optional extra files and .extensionignore."""
        import yaml

        ext_dir = temp_dir / "ignored-ext"
        ext_dir.mkdir()

        # Write manifest
        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(valid_manifest_data, f)

        # Create commands directory with a command file
        commands_dir = ext_dir / "commands"
        commands_dir.mkdir()
        (commands_dir / "hello.md").write_text(
            "---\ndescription: \"Test hello command\"\n---\n\n# Hello\n\n$ARGUMENTS\n"
        )

        # Create any extra files/dirs
        if extra_files:
            for rel_path, content in extra_files.items():
                p = ext_dir / rel_path
                p.parent.mkdir(parents=True, exist_ok=True)
                if content is None:
                    # Create directory
                    p.mkdir(parents=True, exist_ok=True)
                else:
                    p.write_text(content)

        # Write .extensionignore
        if ignore_content is not None:
            (ext_dir / ".extensionignore").write_text(ignore_content)

        return ext_dir

    def test_no_extensionignore(self, temp_dir, valid_manifest_data):
        """Without .extensionignore, all files are copied."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello", "tests/test_foo.py": "pass"},
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "README.md").exists()
        assert (dest / "tests" / "test_foo.py").exists()

    def test_extensionignore_excludes_files(self, temp_dir, valid_manifest_data):
        """Files matching .extensionignore patterns are excluded."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "README.md": "# Hello",
                "tests/test_foo.py": "pass",
                "tests/test_bar.py": "pass",
                ".github/workflows/ci.yml": "on: push",
            },
            ignore_content="tests/\n.github/\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # Included
        assert (dest / "README.md").exists()
        assert (dest / "extension.yml").exists()
        assert (dest / "commands" / "hello.md").exists()
        # Excluded
        assert not (dest / "tests").exists()
        assert not (dest / ".github").exists()

    def test_extensionignore_glob_patterns(self, temp_dir, valid_manifest_data):
        """Glob patterns like *.pyc are respected."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "README.md": "# Hello",
                "helpers.pyc": b"\x00".decode("latin-1"),
                "commands/cache.pyc": b"\x00".decode("latin-1"),
            },
            ignore_content="*.pyc\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "README.md").exists()
        assert not (dest / "helpers.pyc").exists()
        assert not (dest / "commands" / "cache.pyc").exists()

    def test_extensionignore_comments_and_blanks(self, temp_dir, valid_manifest_data):
        """Comments and blank lines in .extensionignore are ignored."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello", "notes.txt": "some notes"},
            ignore_content="# This is a comment\n\nnotes.txt\n\n# Another comment\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "README.md").exists()
        assert not (dest / "notes.txt").exists()

    def test_extensionignore_itself_excluded(self, temp_dir, valid_manifest_data):
        """.extensionignore is never copied to the destination."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            ignore_content="# nothing special here\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "extension.yml").exists()
        assert not (dest / ".extensionignore").exists()

    def test_extensionignore_relative_path_match(self, temp_dir, valid_manifest_data):
        """Patterns matching relative paths work correctly."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/guide.md": "# Guide",
                "docs/internal/draft.md": "draft",
                "README.md": "# Hello",
            },
            ignore_content="docs/internal/draft.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "docs" / "guide.md").exists()
        assert not (dest / "docs" / "internal" / "draft.md").exists()

    def test_extensionignore_dotdot_pattern_is_noop(self, temp_dir, valid_manifest_data):
        """Patterns with '..' should not escape the extension root."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello"},
            ignore_content="../sibling/\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # Everything should still be copied — the '..' pattern matches nothing inside
        assert (dest / "README.md").exists()
        assert (dest / "extension.yml").exists()
        assert (dest / "commands" / "hello.md").exists()

    def test_extensionignore_absolute_path_pattern_is_noop(self, temp_dir, valid_manifest_data):
        """Absolute path patterns should not match anything."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello", "passwd": "sensitive"},
            ignore_content="/etc/passwd\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # Nothing matches — /etc/passwd is anchored to root and there's no 'etc' dir
        assert (dest / "README.md").exists()
        assert (dest / "passwd").exists()

    def test_extensionignore_empty_file(self, temp_dir, valid_manifest_data):
        """An empty .extensionignore should exclude only itself."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello", "notes.txt": "notes"},
            ignore_content="",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "README.md").exists()
        assert (dest / "notes.txt").exists()
        assert (dest / "extension.yml").exists()
        # .extensionignore itself is still excluded
        assert not (dest / ".extensionignore").exists()

    def test_extensionignore_windows_backslash_patterns(self, temp_dir, valid_manifest_data):
        """Backslash patterns (Windows-style) are normalised to forward slashes."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/internal/draft.md": "draft",
                "docs/guide.md": "# Guide",
            },
            ignore_content="docs\\internal\\draft.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "docs" / "guide.md").exists()
        assert not (dest / "docs" / "internal" / "draft.md").exists()

    def test_extensionignore_star_does_not_cross_directories(self, temp_dir, valid_manifest_data):
        """'*' should NOT match across directory boundaries (gitignore semantics)."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/api.draft.md": "draft",
                "docs/sub/api.draft.md": "nested draft",
            },
            ignore_content="docs/*.draft.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # docs/*.draft.md should only match directly inside docs/, NOT subdirs
        assert not (dest / "docs" / "api.draft.md").exists()
        assert (dest / "docs" / "sub" / "api.draft.md").exists()

    def test_extensionignore_doublestar_crosses_directories(self, temp_dir, valid_manifest_data):
        """'**' should match across directory boundaries."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/api.draft.md": "draft",
                "docs/sub/api.draft.md": "nested draft",
                "docs/guide.md": "guide",
            },
            ignore_content="docs/**/*.draft.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert not (dest / "docs" / "api.draft.md").exists()
        assert not (dest / "docs" / "sub" / "api.draft.md").exists()
        assert (dest / "docs" / "guide.md").exists()

    def test_extensionignore_negation_pattern(self, temp_dir, valid_manifest_data):
        """'!' negation re-includes a previously excluded file."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/guide.md": "# Guide",
                "docs/internal.md": "internal",
                "docs/api.md": "api",
            },
            ignore_content="docs/*.md\n!docs/api.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # docs/*.md excludes all .md in docs, but !docs/api.md re-includes it
        assert not (dest / "docs" / "guide.md").exists()
        assert not (dest / "docs" / "internal.md").exists()
        assert (dest / "docs" / "api.md").exists()


class TestExtensionAddCLI:
    """CLI integration tests for extension add command."""

    def test_add_by_display_name_uses_resolved_id_for_download(self, tmp_path):
        """extension add by display name should use resolved ID for download_extension()."""
        from typer.testing import CliRunner
        from unittest.mock import patch, MagicMock
        from specify_cli import app

        runner = CliRunner()

        # Create project structure
        project_dir = tmp_path / "test-project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        (project_dir / ".specify" / "extensions").mkdir(parents=True)

        # Mock catalog that returns extension by display name
        mock_catalog = MagicMock()
        mock_catalog.get_extension_info.return_value = None  # ID lookup fails
        mock_catalog.search.return_value = [
            {
                "id": "acme-jira-integration",
                "name": "Jira Integration",
                "version": "1.0.0",
                "description": "Jira integration extension",
                "_install_allowed": True,
            }
        ]

        # Track what ID was passed to download_extension
        download_called_with = []
        def mock_download(extension_id):
            download_called_with.append(extension_id)
            # Return a path that will fail install (we just want to verify the ID)
            raise ExtensionError("Mock download - checking ID was resolved")

        mock_catalog.download_extension.side_effect = mock_download

        with patch("specify_cli.extensions.ExtensionCatalog", return_value=mock_catalog), \
             patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(
                app,
                ["extension", "add", "Jira Integration"],
                catch_exceptions=True,
            )

        assert result.exit_code != 0, (
            f"Expected non-zero exit code since mock download raises, got {result.exit_code}"
        )

        # Verify download_extension was called with the resolved ID, not the display name
        assert len(download_called_with) == 1
        assert download_called_with[0] == "acme-jira-integration", (
            f"Expected download_extension to be called with resolved ID 'acme-jira-integration', "
            f"but was called with '{download_called_with[0]}'"
        )


class TestExtensionUpdateCLI:
    """CLI integration tests for extension update command."""

    @staticmethod
    def _create_extension_source(base_dir: Path, version: str, include_config: bool = False) -> Path:
        """Create a minimal extension source directory for install tests."""
        import yaml

        ext_dir = base_dir / f"test-ext-{version}"
        ext_dir.mkdir(parents=True, exist_ok=True)

        manifest = {
            "schema_version": "1.0",
            "extension": {
                "id": "test-ext",
                "name": "Test Extension",
                "version": version,
                "description": "A test extension",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.test.hello",
                        "file": "commands/hello.md",
                        "description": "Test command",
                    }
                ]
            },
            "hooks": {
                "after_tasks": {
                    "command": "speckit.test.hello",
                    "optional": True,
                }
            },
        }

        (ext_dir / "extension.yml").write_text(yaml.dump(manifest, sort_keys=False))
        commands_dir = ext_dir / "commands"
        commands_dir.mkdir(exist_ok=True)
        (commands_dir / "hello.md").write_text("---\ndescription: Test\n---\n\n$ARGUMENTS\n")
        if include_config:
            (ext_dir / "linear-config.yml").write_text("custom: true\nvalue: original\n")
        return ext_dir

    @staticmethod
    def _create_catalog_zip(zip_path: Path, version: str):
        """Create a minimal ZIP that passes extension_update ID validation."""
        import zipfile
        import yaml

        manifest = {
            "schema_version": "1.0",
            "extension": {
                "id": "test-ext",
                "name": "Test Extension",
                "version": version,
                "description": "A test extension",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {"commands": [{"name": "speckit.test.hello", "file": "commands/hello.md"}]},
        }

        with zipfile.ZipFile(zip_path, "w") as zf:
            zf.writestr("extension.yml", yaml.dump(manifest, sort_keys=False))

    def test_update_success_preserves_installed_at(self, tmp_path):
        """Successful update should keep original installed_at and apply new version."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()
        project_dir = tmp_path / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        (project_dir / ".claude" / "commands").mkdir(parents=True)

        manager = ExtensionManager(project_dir)
        v1_dir = self._create_extension_source(tmp_path, "1.0.0", include_config=True)
        manager.install_from_directory(v1_dir, "0.1.0")
        original_installed_at = manager.registry.get("test-ext")["installed_at"]
        original_config_content = (
            project_dir / ".specify" / "extensions" / "test-ext" / "linear-config.yml"
        ).read_text()

        zip_path = tmp_path / "test-ext-update.zip"
        self._create_catalog_zip(zip_path, "2.0.0")
        v2_dir = self._create_extension_source(tmp_path, "2.0.0")

        def fake_install_from_zip(self_obj, _zip_path, speckit_version):
            return self_obj.install_from_directory(v2_dir, speckit_version)

        with patch.object(Path, "cwd", return_value=project_dir), \
             patch.object(ExtensionCatalog, "get_extension_info", return_value={
                 "id": "test-ext",
                 "name": "Test Extension",
                 "version": "2.0.0",
                 "_install_allowed": True,
             }), \
             patch.object(ExtensionCatalog, "download_extension", return_value=zip_path), \
             patch.object(ExtensionManager, "install_from_zip", fake_install_from_zip):
            result = runner.invoke(app, ["extension", "update", "test-ext"], input="y\n", catch_exceptions=True)

        assert result.exit_code == 0, result.output

        updated = ExtensionManager(project_dir).registry.get("test-ext")
        assert updated["version"] == "2.0.0"
        assert updated["installed_at"] == original_installed_at
        restored_config_content = (
            project_dir / ".specify" / "extensions" / "test-ext" / "linear-config.yml"
        ).read_text()
        assert restored_config_content == original_config_content

    def test_update_failure_rolls_back_registry_hooks_and_commands(self, tmp_path):
        """Failed update should restore original registry, hooks, and command files."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app
        import yaml

        runner = CliRunner()
        project_dir = tmp_path / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        (project_dir / ".claude" / "commands").mkdir(parents=True)

        manager = ExtensionManager(project_dir)
        v1_dir = self._create_extension_source(tmp_path, "1.0.0")
        manager.install_from_directory(v1_dir, "0.1.0")

        backup_registry_entry = manager.registry.get("test-ext")
        hooks_before = yaml.safe_load((project_dir / ".specify" / "extensions.yml").read_text())

        registered_commands = backup_registry_entry.get("registered_commands", {})
        command_files = []
        registrar = CommandRegistrar()
        for agent_name, cmd_names in registered_commands.items():
            if agent_name not in registrar.AGENT_CONFIGS:
                continue
            agent_cfg = registrar.AGENT_CONFIGS[agent_name]
            commands_dir = project_dir / agent_cfg["dir"]
            for cmd_name in cmd_names:
                cmd_path = commands_dir / f"{cmd_name}{agent_cfg['extension']}"
                command_files.append(cmd_path)

        assert command_files, "Expected at least one registered command file"
        for cmd_file in command_files:
            assert cmd_file.exists(), f"Expected command file to exist before update: {cmd_file}"

        zip_path = tmp_path / "test-ext-update.zip"
        self._create_catalog_zip(zip_path, "2.0.0")

        with patch.object(Path, "cwd", return_value=project_dir), \
             patch.object(ExtensionCatalog, "get_extension_info", return_value={
                 "id": "test-ext",
                 "name": "Test Extension",
                 "version": "2.0.0",
                 "_install_allowed": True,
             }), \
             patch.object(ExtensionCatalog, "download_extension", return_value=zip_path), \
             patch.object(ExtensionManager, "install_from_zip", side_effect=RuntimeError("install failed")):
            result = runner.invoke(app, ["extension", "update", "test-ext"], input="y\n", catch_exceptions=True)

        assert result.exit_code == 1, result.output

        restored_entry = ExtensionManager(project_dir).registry.get("test-ext")
        assert restored_entry == backup_registry_entry

        hooks_after = yaml.safe_load((project_dir / ".specify" / "extensions.yml").read_text())
        assert hooks_after == hooks_before

        for cmd_file in command_files:
            assert cmd_file.exists(), f"Expected command file to be restored after rollback: {cmd_file}"