param(
    [Parameter(Mandatory=$false)]
    [string]$Token
)

# Token aus Umgebungsvariable laden falls nicht als Parameter übergeben
if (-not $Token) {
    $Token = $env:GITEA_TOKEN
    if (-not $Token) {
        Write-Host "Fehler: Kein Token angegeben und GITEA_TOKEN Umgebungsvariable nicht gesetzt!" -ForegroundColor Red
        Write-Host "Verwendung: .\create_release.ps1 -Token 'your_token' oder setze GITEA_TOKEN Umgebungsvariable" -ForegroundColor Yellow
        Write-Host "Das Script führt automatisch einen Build durch und lädt alle Artefakte hoch." -ForegroundColor Cyan
        exit 1
    }
    Write-Host "Token aus Umgebungsvariable GITEA_TOKEN geladen" -ForegroundColor Green
}

Write-Host "=== lib-privatebin Release Creator ===" -ForegroundColor Cyan

# Aktuelle Version ermitteln
$lastTag = git describe --tags --abbrev=0 2>$null
if (-not $lastTag) {
    $lastTag = "v0.1.0"
}

Write-Host "Letzter Tag: $lastTag" -ForegroundColor Green

# Version parsen
if ($lastTag -match "^v(\d+)\.(\d+)\.(\d+)(.*)$") {
    $major = [int]$matches[1]
    $minor = [int]$matches[2]
    $patch = [int]$matches[3]
    $suffix = $matches[4]
    
    $newPatch = $patch + 1
    $newVersion = "v$major.$minor.$newPatch$suffix"
    
    Write-Host "Neue Version: $newVersion" -ForegroundColor Green
} else {
    Write-Host "Fehler: Ungültiges Versionsformat: $lastTag" -ForegroundColor Red
    exit 1
}

# Build durchführen
Write-Host "Führe Build durch..." -ForegroundColor Yellow
if (Test-Path "scripts\build_windows.bat") {
    Write-Host "Verwende scripts\build_windows.bat..." -ForegroundColor Yellow
    cmd /c scripts\build_windows.bat
} else {
    Write-Host "Fehler: scripts\build_windows.bat nicht gefunden!" -ForegroundColor Red
    exit 1
}
if ($LASTEXITCODE -ne 0) {
    Write-Host "Build fehlgeschlagen!" -ForegroundColor Red
    exit 1
}
Write-Host "Build erfolgreich abgeschlossen!" -ForegroundColor Green

# Tests ausführen (Unit + optional Integration via PRIVATEBIN_IT)
Write-Host "Führe Tests aus..." -ForegroundColor Yellow
if (Test-Path "build\CTestTestfile.cmake") {
    pushd build | Out-Null
    try {
        # PRIVATEBIN_IT/PRIVATEBIN_SERVER werden ggf. aus der Umgebung übernommen
        ctest -C Release --output-on-failure
        if ($LASTEXITCODE -ne 0) {
            Write-Host "Tests fehlgeschlagen!" -ForegroundColor Red
            exit 1
        }
    } finally {
        popd | Out-Null
    }
    Write-Host "Tests erfolgreich." -ForegroundColor Green
} else {
    Write-Host "Warnung: Keine Tests gefunden (build/CTestTestfile.cmake fehlt)." -ForegroundColor Yellow
}

# Optional: clang-cl Coverage bauen und HTML-Report als Artefakt paketieren
Write-Host "Erzeuge optionalen Coverage-Report (clang-cl + LLVM), falls Tools vorhanden sind..." -ForegroundColor Yellow
try {
    $llvmCov = "C:\\Program Files\\LLVM\\bin\\llvm-cov.exe"
    $llvmProf = "C:\\Program Files\\LLVM\\bin\\llvm-profdata.exe"
    $llvmCovExists = Test-Path $llvmCov
    $llvmProfExists = Test-Path $llvmProf
    if ($llvmCovExists -and $llvmProfExists) {
        $toolchain = Join-Path $env:USERPROFILE 'vcpkg\scripts\buildsystems\vcpkg.cmake'
        $haveToolchain = Test-Path $toolchain
        $cmakeArgs = @(
            '-S','.',
            '-B','build-clang',
            '-G','Visual Studio 17 2022',
            '-A','x64',
            '-T','ClangCL',
            '-DENABLE_LLVM_COVERAGE=ON',
            ("-DLLVM_PROFDATA={0}" -f $llvmProf),
            ("-DLLVM_COV={0}" -f $llvmCov)
        )
        if ($haveToolchain) {
            $cmakeArgs += ("-DCMAKE_TOOLCHAIN_FILE={0}" -f $toolchain)
            $cmakeArgs += '-DVCPKG_TARGET_TRIPLET=x64-windows'
        }
        & cmake @cmakeArgs | Out-Null
        if ($LASTEXITCODE -ne 0) { throw "CMake-Konfiguration für Coverage fehlgeschlagen" }

        & cmake --build build-clang --config Release --target coverage_llvm
        if ($LASTEXITCODE -ne 0) { throw "Coverage-Build fehlgeschlagen" }

        $htmlDir = "build-clang/coverage/html"
        if (Test-Path $htmlDir) {
            if (-not (Test-Path 'dist')) { New-Item -ItemType Directory -Path 'dist' | Out-Null }
            $zipPath = "dist/coverage_html.zip"
            if (Test-Path $zipPath) { Remove-Item -Force $zipPath }
            Compress-Archive -Path "$htmlDir\*" -DestinationPath $zipPath
            Write-Host "Coverage-HTML nach $zipPath gepackt." -ForegroundColor Green
        } else {
            Write-Host "Hinweis: Kein Coverage-HTML-Verzeichnis gefunden (Tests evtl. ohne Ausführungspfad)." -ForegroundColor Yellow
        }
    } else {
        Write-Host "LLVM-Tools nicht gefunden; überspringe Coverage (erwartet: $llvmCov / $llvmProf)." -ForegroundColor Yellow
    }
} catch {
    Write-Host "Warnung: Coverage-Erzeugung fehlgeschlagen: $($_.Exception.Message)" -ForegroundColor Yellow
}

<#
 Commit & Push, Tag & Push
#>
# Änderungen committen
$status = git status --porcelain
if ($status) {
    git add -A
    git commit -m "Release $newVersion prepare for release"
    if ($LASTEXITCODE -ne 0) { Write-Host "Commit fehlgeschlagen." -ForegroundColor Red; exit 1 }
}

# Remote/Repo-Infos ermitteln
$remoteUrl = git remote get-url origin 2>$null
if (-not $remoteUrl) {
    Write-Host "Fehler: Kein Git-Remote 'origin' gefunden." -ForegroundColor Red
    exit 1
}

# Host, Owner, Repo aus URL extrahieren (https oder ssh)
$gitHost = $null; $owner = $null; $repoName = $null
if ($remoteUrl -match '^(https?://)([^/]+)/(.+?)(?:\.git)?$') {
    $gitHost = $matches[2]
    $path = $matches[3]
} elseif ($remoteUrl -match '^[^@]+@([^:]+):(.+?)(?:\.git)?$') {
    $gitHost = $matches[1]
    $path = $matches[2]
}
if ($path) {
    $parts = $path.Split('/')
    if ($parts.Length -ge 2) {
        $owner = $parts[$parts.Length-2]
        $repoName = $parts[$parts.Length-1]
    }
}
if (-not $gitHost -or -not $owner -or -not $repoName) {
    Write-Host "Fehler: Konnte Host/Owner/Repo aus Remote-URL nicht ermitteln: $remoteUrl" -ForegroundColor Red
    exit 1
}

# Tag erstellen und pushen
git tag -a $newVersion -m "Release $newVersion"
if ($LASTEXITCODE -ne 0) { Write-Host "Tag-Erstellung fehlgeschlagen." -ForegroundColor Red; exit 1 }
git push origin $newVersion
if ($LASTEXITCODE -ne 0) {
    Write-Host "Tag-Push fehlgeschlagen. Stelle sicher, dass Du Push-Rechte besitzt." -ForegroundColor Red
    exit 1
}

# Vor Upload: Artefakte einsammeln (dist)
if (Test-Path "scripts\collect_binaries.ps1") {
    Write-Host "Sammle Build-Artefakte (scripts/collect_binaries.ps1)..." -ForegroundColor Yellow
    powershell -NoProfile -ExecutionPolicy Bypass -File scripts\collect_binaries.ps1
}

# Release erstellen
$releaseBody = "## What is New in $newVersion`n`n- AUTOMATED: Release created by script`n- VERSION: Bumped from $lastTag to $newVersion`n- BUILD: Automatic build with build_windows.bat`n`n## Build Artifacts`n`nBuild-Artefakte werden automatisch hochgeladen und hier angezeigt.`n`nTypische Artefakte:`n- privatebinapi.dll - Windows Dynamic Link Library`n- privatebinapi.lib - Windows Import Library`n- example.exe - Combined example program`n- privatebinapi.h - C++ header file"

$releaseData = @{
    tag_name = $newVersion
    name = "$newVersion - Automated Release"
    body = $releaseBody
    draft = $false
    prerelease = $false
} | ConvertTo-Json -Depth 10

$headers = @{
    "Authorization" = "token $Token"
    "Content-Type" = "application/json"
}

$releaseUri = "https://$gitHost/api/v1/repos/$owner/$repoName/releases"
try {
    $release = Invoke-RestMethod -Uri $releaseUri -Method Post -Headers $headers -Body $releaseData -ErrorAction Stop
} catch {
    Write-Host "Fehler beim Erstellen des Releases: $($_.Exception.Message)" -ForegroundColor Red
    exit 1
}

Write-Host "Release erstellt: $($release.id)" -ForegroundColor Green
Write-Host "URL: $($release.html_url)" -ForegroundColor Green

# Build-Artefakte zum Release hinzufügen
Write-Host "Füge Build-Artefakte hinzu..." -ForegroundColor Yellow

# Artefakte aus dem dist-Ordner finden
$distPath = "dist"
if (Test-Path $distPath) {
    $artifacts = Get-ChildItem -Path $distPath -Recurse -File | Where-Object { 
        $_.Extension -match "\.(dll|lib|exe|h|zip)$" 
    }
    
    if ($artifacts) {
        Write-Host "Gefundene Artefakte:" -ForegroundColor Green
        foreach ($artifact in $artifacts) {
            Write-Host "  - $($artifact.Name)" -ForegroundColor White
        }
        
        # Artefakte hochladen
        foreach ($artifact in $artifacts) {
            Write-Host "Lade hoch: $($artifact.Name)..." -ForegroundColor Yellow
            
            $uploadUri = "https://gitea.medisoftware.org/api/v1/repos/Markus/lib-privatebin/releases/$($release.id)/assets"
            
            $boundary = [System.Guid]::NewGuid().ToString()
            $LF = "`r`n"
            $bodyLines = @(
                "--$boundary",
                "Content-Disposition: form-data; name=`"attachment`"; filename=`"$($artifact.Name)`"",
                "Content-Type: application/octet-stream",
                "",
                [System.IO.File]::ReadAllBytes($artifact.FullName),
                "--$boundary--"
            )
            
            $body = $bodyLines -join $LF
            
            $uploadHeaders = @{
                "Authorization" = "token $Token"
                "Content-Type" = "multipart/form-data; boundary=$boundary"
            }
            
            try {
                $uploadResponse = Invoke-RestMethod -Uri $uploadUri -Method Post -Headers $uploadHeaders -Body $body
                Write-Host "  ✓ $($artifact.Name) erfolgreich hochgeladen" -ForegroundColor Green
            } catch {
                Write-Host "  ✗ Fehler beim Hochladen von $($artifact.Name): $($_.Exception.Message)" -ForegroundColor Red
            }
        }
    } else {
        Write-Host "Keine Build-Artefakte im dist-Ordner gefunden!" -ForegroundColor Yellow
    }
} else {
    Write-Host "dist-Ordner nicht gefunden!" -ForegroundColor Yellow
}

Write-Host "Release-Erstellung abgeschlossen!" -ForegroundColor Green