spec-kit/extensions/git/scripts/powershell/git-common.ps1

#!/usr/bin/env pwsh
# Git-specific common functions for the git extension.
# Extracted from scripts/powershell/common.ps1 — contains only git-specific
# branch validation and detection logic.

function Test-HasGit {
    try {
        git rev-parse --show-toplevel 2>$null | Out-Null
        return ($LASTEXITCODE -eq 0)
    } catch {
        return $false
    }
}

function Test-FeatureBranch {
    param(
        [string]$Branch,
        [bool]$HasGit = $true
    )
    
    # For non-git repos, we can't enforce branch naming but still provide output
    if (-not $HasGit) {
        Write-Warning "[specify] Warning: Git repository not detected; skipped branch validation"
        return $true
    }
    
    if ($Branch -notmatch '^[0-9]{3}-' -and $Branch -notmatch '^\d{8}-\d{6}-') {
        Write-Output "ERROR: Not on a feature branch. Current branch: $Branch"
        Write-Output "Feature branches should be named like: 001-feature-name or 20260319-143022-feature-name"
        return $false
    }
    return $true
}