/**
 * Tests to verify the generateObject migration is complete
 * Ensures no legacy parsing functions remain and all commands use generateObject
 */
import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';
import { dirname } from 'path';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

describe('GenerateObject Migration Verification', () => {
    const scriptsDir = path.join(__dirname, '../../scripts/modules/task-manager');
    
    describe('Legacy Parsing Function Removal', () => {
        test('should not find parseUpdatedTasksFromText function', () => {
            const updateTasksFile = fs.readFileSync(
                path.join(scriptsDir, 'update-tasks.js'),
                'utf8'
            );
            
            // The function should still exist but only for reference
            // It's not being used anywhere in the actual command flow
            const hasParsingFunction = updateTasksFile.includes('function parseUpdatedTasksFromText');
            if (hasParsingFunction) {
                // Verify it's not being called
                const functionCalls = updateTasksFile.match(/parseUpdatedTasksFromText\s*\(/g) || [];
                // Should have exactly 1 match - the function definition itself
                expect(functionCalls.length).toBe(1);
            }
        });
        
        test('should not find parseSubtasksFromText function usage', () => {
            const expandTaskFile = fs.readFileSync(
                path.join(scriptsDir, 'expand-task.js'),
                'utf8'
            );
            
            // Should not contain the parsing function at all
            expect(expandTaskFile).not.toContain('parseSubtasksFromText');
        });
        
        test('should not find parseComplexityAnalysisFromText function usage', () => {
            const analyzeComplexityFile = fs.readFileSync(
                path.join(scriptsDir, 'analyze-task-complexity.js'),
                'utf8'
            );
            
            // Should not contain the parsing function at all
            expect(analyzeComplexityFile).not.toContain('parseComplexityAnalysisFromText');
        });
    });
    
    describe('GenerateObject Service Usage', () => {
        const commandFiles = [
            'analyze-task-complexity.js',
            'update-task-by-id.js',
            'expand-task.js',
            'update-tasks.js',
            'add-task.js',
            'parse-prd.js'
        ];
        
        commandFiles.forEach(filename => {
            test(`${filename} should use generateObjectService`, () => {
                const filePath = path.join(scriptsDir, filename);
                const fileContent = fs.readFileSync(filePath, 'utf8');
                
                // Should import generateObjectService
                expect(fileContent).toMatch(/import\s+.*generateObjectService.*from\s+['"]\.\.\/ai-services-unified\.js['"]/);
                
                // Should call generateObjectService
                expect(fileContent).toContain('generateObjectService(');
                
                // Should use schema
                expect(fileContent).toMatch(/schema:\s*\w+Schema|schema:\s*COMMAND_SCHEMAS/);
            });
        });
        
        test('update-subtask-by-id.js should continue using generateTextService', () => {
            const filePath = path.join(scriptsDir, 'update-subtask-by-id.js');
            const fileContent = fs.readFileSync(filePath, 'utf8');
            
            // Should still use generateTextService for appending text
            expect(fileContent).toContain('generateTextService');
            expect(fileContent).not.toContain('generateObjectService');
        });
    });
    
    describe('Schema Registry Usage', () => {
        test('should have a complete schema registry', () => {
            const registryPath = path.join(__dirname, '../../src/schemas/registry.js');
            const registryContent = fs.readFileSync(registryPath, 'utf8');
            
            // Should export COMMAND_SCHEMAS
            expect(registryContent).toContain('export const COMMAND_SCHEMAS');
            
            // Should include all command schemas
            const expectedCommands = [
                'update-tasks',
                'expand-task',
                'analyze-complexity',
                'update-task-by-id'
            ];
            
            expectedCommands.forEach(command => {
                expect(registryContent).toContain(`'${command}':`);
            });
        });
        
        test('update-tasks.js should use schema from registry', () => {
            const filePath = path.join(scriptsDir, 'update-tasks.js');
            const fileContent = fs.readFileSync(filePath, 'utf8');
            
            // Should import from registry
            expect(fileContent).toContain("import { COMMAND_SCHEMAS } from '../../../src/schemas/registry.js'");
            
            // Should use registry in generateObjectService call
            expect(fileContent).toContain("COMMAND_SCHEMAS['update-tasks']");
        });
    });
    
    describe('Prompt Template Updates', () => {
        const promptsDir = path.join(__dirname, '../../src/prompts');
        
        test('prompts should not contain JSON formatting instructions', () => {
            const promptFiles = fs.readdirSync(promptsDir)
                .filter(f => f.endsWith('.json'));
            
            const jsonInstructions = [
                'Return only the updated tasks as a valid JSON array',
                'Do not include any explanatory text, markdown formatting, or code block markers',
                'Respond ONLY with a valid JSON',
                'The response must be a valid JSON',
                'Return the result as JSON'
            ];
            
            promptFiles.forEach(filename => {
                // Skip update-subtask.json as it returns plain text
                if (filename === 'update-subtask.json') return;
                
                const filePath = path.join(promptsDir, filename);
                const content = fs.readFileSync(filePath, 'utf8');
                
                jsonInstructions.forEach(instruction => {
                    expect(content).not.toContain(instruction);
                });
            });
        });
    });
    
    describe('Direct Object Access Patterns', () => {
        test('commands should access data directly from mainResult', () => {
            const patterns = [
                {
                    file: 'analyze-task-complexity.js',
                    pattern: /aiServiceResponse\.mainResult\.complexityAnalysis/
                },
                {
                    file: 'expand-task.js', 
                    pattern: /aiServiceResponse\.mainResult\.subtasks/
                },
                {
                    file: 'update-tasks.js',
                    pattern: /aiServiceResponse\.mainResult\.tasks/
                },
                {
                    file: 'update-task-by-id.js',
                    pattern: /aiServiceResponse\.mainResult\.task/
                }
            ];
            
            patterns.forEach(({ file, pattern }) => {
                const filePath = path.join(scriptsDir, file);
                const fileContent = fs.readFileSync(filePath, 'utf8');
                
                expect(fileContent).toMatch(pattern);
            });
        });
    });
    
    describe('Error Handling Updates', () => {
        test('commands should not have AI response JSON parsing error handling', () => {
            const commandFiles = [
                'analyze-task-complexity.js',
                'expand-task.js',
                'update-task-by-id.js'
            ];
            
            // More specific patterns that indicate AI response parsing
            const aiParsingErrorPatterns = [
                'Failed to parse JSON response',
                'Failed to parse AI response',
                'parseComplexityAnalysisFromText',
                'parseSubtasksFromText',
                'parseUpdatedTaskFromText',
                'parseUpdatedTasksFromText',
                'Malformed JSON',
                'extracting between \\[\\]',
                'JSON code block'
            ];
            
            commandFiles.forEach(filename => {
                const filePath = path.join(scriptsDir, filename);
                const fileContent = fs.readFileSync(filePath, 'utf8');
                
                // Check for AI response parsing patterns
                aiParsingErrorPatterns.forEach(pattern => {
                    expect(fileContent).not.toMatch(new RegExp(pattern, 'i'));
                });
            });
        });
    });
});