# Refresh the MACHINE-LOCAL mirror of the Curabis BCQuality knowledge base.
#
# v2 - GIT-BASED (privat repo): al konsumtion sker via en kanal-klon i
#   %USERPROFILE%\.claude\QualityHub   (pinned til stable-branchen)
# Autentificering haandteres af Git Credential Manager - ingen raw-URLs,
# ingen GitHub API, ingen CDN-cache. Foerste koersel udloeser evt. et
# GCM-login i browseren; det ER onboarding-autentificeringen.
#
# Mirrors three layers into %USERPROFILE%\.claude\bcquality-knowledge:
#   custom/    - Curabis org-specific rules   (ALWAYS read in full each session)
#   community/ - BC community patterns         (loaded on relevance via INDEX.md)
#   microsoft/ - platform guardrails           (loaded on relevance via INDEX.md)
# ...plus INDEX.md (domain + keywords per fil) og opdaterer versionsmarkoeren.
#
# Mirroren committes ALDRIG til et projekt-repo - se BCQuality-reglen
# bcquality-knowledge-must-mirror-to-machine-not-repo. Koer periodisk:
#   powershell -ExecutionPolicy Bypass -File "$env:USERPROFILE\.claude\sync-bcquality-knowledge.ps1"

$ErrorActionPreference = 'Stop'

$repoUrl = 'https://github.com/Curabis/QualityHub.git'
$clone   = Join-Path $env:USERPROFILE '.claude\QualityHub'
$dest    = Join-Path $env:USERPROFILE '.claude\bcquality-knowledge'
$marker  = Join-Path $env:USERPROFILE '.claude\.bcquality-version'
$staging = "$dest.tmp"

# --- 1. Kanal-klon: opret eller opdater (pinned til stable) ---
if (-not (Test-Path (Join-Path $clone '.git'))) {
    Write-Host "Kanal-klon mangler - kloner stable fra $repoUrl ..."
    git clone --branch stable --single-branch $repoUrl $clone
    if ($LASTEXITCODE -ne 0) { throw "git clone fejlede - er du autentificeret (GCM), og har du adgang til repoet?" }
} else {
    git -C $clone fetch origin stable --quiet
    if ($LASTEXITCODE -ne 0) { throw "git fetch fejlede - tjek netvaerk/adgang." }
    git -C $clone checkout -B stable origin/stable --quiet
}
$sha = (git -C $clone rev-parse HEAD).Trim()
Write-Host "Kanal-klon paa stable @ $($sha.Substring(0,7))"

# --- 2. Byg mirror fra klonens filer (ingen netvaerk herfra) ---
$layerMap = [ordered]@{
    'custom\knowledge'    = 'custom'
    'community\knowledge' = 'community'
    'microsoft\knowledge' = 'microsoft'
}

function Get-Frontmatter {
    param([string]$Path)
    $lines = Get-Content -Path $Path
    $fm = @{}
    if ($lines.Count -eq 0 -or $lines[0].Trim() -ne '---') { return $fm }
    for ($i = 1; $i -lt $lines.Count; $i++) {
        if ($lines[$i].Trim() -eq '---') { break }
        if ($lines[$i] -match '^\s*([\w-]+):\s*(.*)$') {
            $fm[$matches[1]] = $matches[2].Trim()
        }
    }
    return $fm
}

if (Test-Path $staging) { Remove-Item -Recurse -Force $staging }
New-Item -ItemType Directory -Force $staging | Out-Null

$files = @()
foreach ($prefix in $layerMap.Keys) {
    $srcDir = Join-Path $clone $prefix
    if (-not (Test-Path $srcDir)) { continue }
    $layer = $layerMap[$prefix]
    Get-ChildItem $srcDir -Recurse -Filter *.md | ForEach-Object {
        $relative = $_.FullName.Substring($srcDir.Length + 1)
        $localPath = Join-Path $staging (Join-Path $layer $relative)
        New-Item -ItemType Directory -Force (Split-Path $localPath) | Out-Null
        Copy-Item $_.FullName $localPath
        $files += [pscustomobject]@{ Layer = $layer; Relative = $relative; LocalPath = $localPath }
    }
}
if ($files.Count -eq 0) { throw 'Ingen knowledge-filer fundet i kanal-klonen - afbryder.' }

# --- 3. INDEX.md (relevans-indeks for alle lag) ---
$idx = [System.Collections.Generic.List[string]]::new()
$idx.Add('# BCQuality Knowledge Index')
$idx.Add('')
$idx.Add('<!-- Generated by sync-bcquality-knowledge.ps1 - do not edit by hand. -->')
$idx.Add('')
$idx.Add('Layers: `custom` is ALWAYS read in full each session. For `community` and')
$idx.Add('`microsoft`, scan this index and read only the files whose domain/keywords')
$idx.Add('match the task at hand.')
$idx.Add('')
foreach ($layer in @('custom', 'community', 'microsoft')) {
    $layerFiles = $files | Where-Object { $_.Layer -eq $layer } | Sort-Object Relative
    if (-not $layerFiles) { continue }
    $note = if ($layer -eq 'custom') { ' (always-on)' } else { ' (load on relevance)' }
    $idx.Add("## $layer$note")
    $idx.Add('')
    foreach ($f in $layerFiles) {
        $fm = Get-Frontmatter $f.LocalPath
        $domain = if ($fm.ContainsKey('domain')) { $fm['domain'] } else { '' }
        $keywords = if ($fm.ContainsKey('keywords')) { $fm['keywords'].Trim('[', ']') } else { '' }
        $rel = ($f.Relative -replace '\.md$', '') -replace '\\', '/'
        $idx.Add("- ``$layer/$rel`` - domain: $domain; keywords: $keywords")
    }
    $idx.Add('')
}
Set-Content -Path (Join-Path $staging 'INDEX.md') -Value $idx -Encoding utf8

# --- 4. Swap + markoer ---
if (Test-Path $dest) { Remove-Item -Recurse -Force $dest }
Rename-Item -Path $staging -NewName (Split-Path $dest -Leaf)
Set-Content -Path $marker -Value $sha -Encoding ascii

Write-Host ''
Write-Host "Done. $($files.Count) filer, 3 lag, stable @ $($sha.Substring(0,7))."
Write-Host "Machine-local mirror updated: $dest"