<#
.SYNOPSIS
    生成 integrity.sha256 文件
.DESCRIPTION
    计算 hooks 和关键配置文件的 SHA256 哈希,
    写入 integrity.sha256 供 install.ps1 校验.
    每次 prepare-repo.ps1 推送前应运行此脚本.
.USAGE
    .\generate-integrity.ps1
#>

$ClaudeDir = Join-Path $env:USERPROFILE ".claude"
$OutputFile = Join-Path $ClaudeDir "integrity.sha256"

if (-not (Test-Path $ClaudeDir)) {
    Write-Host "[ERROR] .claude 目录不存在" -ForegroundColor Red
    exit 1
}

Write-Host "  生成 integrity.sha256..." -ForegroundColor Cyan

# 需要校验的关键文件模式
$patterns = @(
    "hooks/*.js",
    "hooks/lib/*.js",
    "scripts/paths.config.js",
    "CLAUDE.md",
    "settings.template.json",
    "settings.local.template.json"
)

$hashes = @()
foreach ($pattern in $patterns) {
    $fullPattern = Join-Path $ClaudeDir $pattern
    foreach ($file in (Get-Item $fullPattern -ErrorAction SilentlyContinue)) {
        $hash = (Get-FileHash $file.FullName -Algorithm SHA256).Hash.ToLower()
        $relPath = $file.FullName.Substring($ClaudeDir.Length + 1).Replace('\', '/')
        $hashes += "$hash  $relPath"
    }
}

# 去重并排序
$hashes = $hashes | Sort-Object -Unique

$hashes | Set-Content $OutputFile -Encoding UTF8
$count = $hashes.Count

Write-Host "  [OK] 已生成 $count 个文件哈希" -ForegroundColor Green
Write-Host "  路径: $OutputFile" -ForegroundColor Gray
Write-Host ""
Write-Host "  注意: 请在 git commit 前运行此脚本" -ForegroundColor Yellow