<#
.SYNOPSIS
    Bollwerk App in einem Schritt deployen.
.DESCRIPTION
    Führt den vollständigen Release-Workflow aus:
      1. versionCode automatisch erhöhen (versionName optional setzen)
      2. APK bauen (./gradlew assembleDebug)
      3. APK per SCP auf VPS hochladen
      4. Server-Version per API aktualisieren (kein Container-Neustart)
      5. Version-Bump committen und pushen
.PARAMETER VersionName
    Neue versionName (z.B. "1.8"). Wenn weggelassen, bleibt die aktuelle.
.PARAMETER SkipBuild
    Gradle-Build überspringen (wenn APK bereits gebaut).
.PARAMETER SkipPush
    Git-Push überspringen (nur lokaler Commit).
.EXAMPLE
    .\deploy.ps1
    .\deploy.ps1 -VersionName "2.0"
    .\deploy.ps1 -SkipBuild
#>
param(
    [string] $VersionName,
    [switch] $SkipBuild,
    [switch] $SkipPush
)

$ErrorActionPreference = "Stop"
$VPS           = "root@195.246.231.210"
$RemoteDir     = "/opt/bollwerk"
$ServerUrl     = "https://bollwerk.online"
$BuildGradle   = "app/build.gradle.kts"
$ApkPath       = "app/build/outputs/apk/debug/app-debug.apk"

# --- Admin-Token ---
$AdminToken = $env:BOLLWERK_ADMIN_TOKEN
if (-not $AdminToken) {
    Write-Error @"
BOLLWERK_ADMIN_TOKEN nicht gesetzt.
Bitte einmalig in der Session setzen:
  `$env:BOLLWERK_ADMIN_TOKEN = 'tRIdxACDDjJDOXRd0WDnIN2f'
"@
    exit 1
}

# --- Version lesen ---
$content     = Get-Content $BuildGradle -Raw
$currentCode = [int]([regex]::Match($content, 'versionCode\s*=\s*(\d+)').Groups[1].Value)
$currentName = [regex]::Match($content, 'versionName\s*=\s*"([^"]+)"').Groups[1].Value
$newCode     = $currentCode + 1
$newName     = if ($VersionName) { $VersionName } else { $currentName }

Write-Host ""
Write-Host "╔══════════════════════════════════════╗" -ForegroundColor Cyan
Write-Host "║       Bollwerk Deploy                ║" -ForegroundColor Cyan
Write-Host "╚══════════════════════════════════════╝" -ForegroundColor Cyan
Write-Host "  Version: $currentName ($currentCode) → $newName ($newCode)" -ForegroundColor White
Write-Host ""

# --- build.gradle.kts patchen ---
$updated = $content -replace "versionCode\s*=\s*$currentCode", "versionCode = $newCode"
if ($VersionName) {
    $updated = $updated -replace 'versionName\s*=\s*"[^"]+"', "versionName = `"$newName`""
}
[System.IO.File]::WriteAllText((Resolve-Path $BuildGradle).Path, $updated)
Write-Host "[✓] build.gradle.kts aktualisiert" -ForegroundColor Green

# --- Build ---
if (-not $SkipBuild) {
    Write-Host ""
    Write-Host "[1/4] APK bauen..." -ForegroundColor Yellow
    & ./gradlew assembleDebug
    if ($LASTEXITCODE -ne 0) { Write-Error "Build fehlgeschlagen."; exit 1 }
    Write-Host "[✓] APK gebaut" -ForegroundColor Green
} else {
    Write-Host "[1/4] Build übersprungen (-SkipBuild)" -ForegroundColor DarkYellow
}

if (-not (Test-Path $ApkPath)) {
    Write-Error "APK nicht gefunden: $ApkPath"
    exit 1
}

# --- SSH-Agent prüfen ---
$null = ssh-add -l 2>&1
if ($LASTEXITCODE -ne 0) {
    Write-Error "SSH-Agent hat keinen Key. Bitte 'ssh-add' ausführen."
    exit 1
}

# --- APK hochladen ---
Write-Host ""
Write-Host "[2/4] APK hochladen → VPS..." -ForegroundColor Yellow
ssh $VPS "mkdir -p $RemoteDir/data" 2>&1 | Out-Null
scp $ApkPath "${VPS}:${RemoteDir}/data/app-latest.apk"
if ($LASTEXITCODE -ne 0) { Write-Error "APK-Upload fehlgeschlagen."; exit 1 }
Write-Host "[✓] APK hochgeladen" -ForegroundColor Green

# --- Server-Version setzen ---
Write-Host ""
Write-Host "[3/4] Server-Version aktualisieren..." -ForegroundColor Yellow
$body = @{ versionCode = $newCode; versionName = $newName } | ConvertTo-Json -Compress
try {
    $resp = Invoke-WebRequest -Uri "$ServerUrl/api/admin/version" `
        -Method POST `
        -Headers @{ "Authorization" = "Bearer $AdminToken"; "Content-Type" = "application/json" } `
        -Body $body `
        -UseBasicParsing
    Write-Host "[✓] Version gesetzt: $newName ($newCode)" -ForegroundColor Green
} catch {
    Write-Error "Version-Update fehlgeschlagen: $_"
    exit 1
}

# --- Git Commit + Push ---
Write-Host ""
Write-Host "[4/4] Committen..." -ForegroundColor Yellow
git add $BuildGradle
git commit -m "chore: release v$newName ($newCode)"
if (-not $SkipPush) {
    git push
    Write-Host "[✓] Gepusht" -ForegroundColor Green
}

# --- Fertig ---
Write-Host ""
Write-Host "╔══════════════════════════════════════╗" -ForegroundColor Green
Write-Host "║       Deploy abgeschlossen ✓         ║" -ForegroundColor Green
Write-Host "╚══════════════════════════════════════╝" -ForegroundColor Green
Write-Host "  App-Version : $newName ($newCode)"
Write-Host "  Homepage    : $ServerUrl/"
Write-Host "  APK-Download: $ServerUrl/static/app-latest.apk"
Write-Host ""