$ErrorActionPreference = "Stop"

Write-Host ""
Write-Host "=== YouTube Personal - Memoire 18.10.7 / Memoire Gradle-D8 ===" -ForegroundColor Cyan
Write-Host "Projet : $PWD"
Write-Host ""

$root = (Get-Location).Path
$gradleProps = Join-Path $root "android\gradle.properties"
$rootGradle = Join-Path $root "android\build.gradle.kts"

foreach ($path in @($gradleProps, $rootGradle)) {
    if (-not (Test-Path $path)) {
        throw "Fichier introuvable : $path"
    }
}

# Verifie que le bridge 18.10.6 est bien present avant de continuer.
$gradleText = Get-Content $rootGradle -Raw
if ($gradleText -notmatch 'YOUTUBE_PERSONAL_AGP9_KOTLIN_BRIDGE_18_10_6') {
    throw "Le bridge Kotlin 18.10.6 est absent. Applique d'abord le correctif 18.10.6."
}
Write-Host "[OK] Bridge Kotlin 18.10.6 detecte." -ForegroundColor Green

$backup = "$gradleProps.before_memory_18_10_7"
if (-not (Test-Path $backup)) {
    Copy-Item $gradleProps $backup
    Write-Host "[OK] Sauvegarde : $backup" -ForegroundColor Green
}

# Choisit une heap prudente en fonction de la RAM physique disponible.
$totalGb = 0
try {
    $totalGb = [math]::Floor((Get-CimInstance Win32_ComputerSystem).TotalPhysicalMemory / 1GB)
} catch {
    $totalGb = 16
}

if ($totalGb -ge 24) {
    $heap = "8g"
    $meta = "1536m"
    $kotlinHeap = "2048m"
} elseif ($totalGb -ge 16) {
    $heap = "6g"
    $meta = "1024m"
    $kotlinHeap = "1536m"
} elseif ($totalGb -ge 12) {
    $heap = "4g"
    $meta = "768m"
    $kotlinHeap = "1024m"
} else {
    $heap = "3g"
    $meta = "512m"
    $kotlinHeap = "768m"
}

Write-Host "[INFO] RAM detectee : environ $totalGb Go" -ForegroundColor DarkGray
Write-Host "[INFO] Heap Gradle choisie : $heap" -ForegroundColor DarkGray

$props = Get-Content $gradleProps -Raw

function Set-GradleProperty {
    param([string]$Name, [string]$Value)
    $pattern = '(?m)^\s*' + [regex]::Escape($Name) + '\s*=.*$'
    $line = "$Name=$Value"
    if ($script:props -match $pattern) {
        $script:props = [regex]::Replace($script:props, $pattern, $line, 1)
    } else {
        if (-not $script:props.EndsWith("`n")) {
            $script:props += "`r`n"
        }
        $script:props += "$line`r`n"
    }
}

Write-Host "[1/5] Configuration memoire Gradle / Kotlin..." -ForegroundColor Yellow
Set-GradleProperty "org.gradle.jvmargs" "-Xmx$heap -XX:MaxMetaspaceSize=$meta -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8"
Set-GradleProperty "kotlin.daemon.jvmargs" "-Xmx$kotlinHeap -Dfile.encoding=UTF-8"
Set-GradleProperty "org.gradle.parallel" "false"
Set-GradleProperty "org.gradle.workers.max" "2"
Set-GradleProperty "org.gradle.daemon" "true"

# Conserve les deux proprietes requises par le bridge 18.10.6.
Set-GradleProperty "android.builtInKotlin" "false"
Set-GradleProperty "android.newDsl" "false"

Set-Content -Path $gradleProps -Value $props -Encoding UTF8
Write-Host "[OK] org.gradle.jvmargs configure sur -Xmx$heap" -ForegroundColor Green
Write-Host "[OK] org.gradle.workers.max=2" -ForegroundColor Green
Write-Host "[OK] org.gradle.parallel=false" -ForegroundColor Green

Write-Host "[2/5] Arret du programme et des anciens daemons Gradle..." -ForegroundColor Yellow
Get-Process youtube_personal -ErrorAction SilentlyContinue | Stop-Process -Force -ErrorAction SilentlyContinue
Push-Location (Join-Path $root "android")
try {
    & .\gradlew.bat --stop | Out-Host
} catch {
    Write-Host "[INFO] Aucun daemon Gradle actif." -ForegroundColor DarkGray
}
Pop-Location

Write-Host "[3/5] Nettoyage des sorties de build uniquement..." -ForegroundColor Yellow
$buildDir = Join-Path $root "build"
if (Test-Path $buildDir) {
    try {
        Remove-Item $buildDir -Recurse -Force -ErrorAction Stop
        Write-Host "[OK] build supprime." -ForegroundColor Green
    } catch {
        Write-Host "[ATTENTION] build partiellement verrouille; Gradle reconstruira ce qui est necessaire." -ForegroundColor Yellow
    }
}

Write-Host "[4/5] Resolution des dependances..." -ForegroundColor Yellow
flutter pub get
if ($LASTEXITCODE -ne 0) {
    throw "flutter pub get a echoue."
}

Write-Host "[5/5] Build Debug ARM64 de verification..." -ForegroundColor Yellow
Write-Host "      (ARM64 uniquement pour reduire fortement le pic memoire D8/CMake)" -ForegroundColor DarkGray
flutter build apk --debug --target-platform android-arm64
if ($LASTEXITCODE -ne 0) {
    Write-Host ""
    Write-Host "Le correctif memoire est applique mais le build a encore echoue." -ForegroundColor Red
    Write-Host "Copie la nouvelle erreur a partir de 'FAILURE:' ou 'Error:'." -ForegroundColor Yellow
    exit 1
}

$apk = Join-Path $root "build\app\outputs\flutter-apk\app-debug.apk"
Write-Host ""
Write-Host "[OK] Build Android Debug ARM64 reussi." -ForegroundColor Green
if (Test-Path $apk) {
    Write-Host "APK Debug : $apk" -ForegroundColor Cyan
}
Write-Host ""
Write-Host "Teste maintenant sur le smartphone :" -ForegroundColor Cyan
Write-Host "  flutter run -d f10778d8"
Write-Host ""
Write-Host "Puis APK Release ARM64 :" -ForegroundColor Cyan
Write-Host "  flutter build apk --release --target-platform android-arm64"
Write-Host ""