$ErrorActionPreference = "Stop"

Write-Host ""
Write-Host "=== YouTube Personal - Memoire Export / Import V1 ===" -ForegroundColor Cyan
Write-Host "Projet : $PWD"
Write-Host ""

if (-not (Test-Path ".\pubspec.yaml")) {
    throw "pubspec.yaml introuvable. Lance ce script depuis la racine du projet Flutter."
}

$settingsPath = ".\lib\screens\settings_page.dart"
if (-not (Test-Path $settingsPath)) {
    throw "lib/screens/settings_page.dart introuvable."
}

$backupPath = "$settingsPath.before_memory_v1"
if (-not (Test-Path $backupPath)) {
    Copy-Item $settingsPath $backupPath
    Write-Host "[OK] Sauvegarde settings_page : $backupPath" -ForegroundColor Green
} else {
    Write-Host "[INFO] Sauvegarde settings_page deja presente." -ForegroundColor DarkGray
}

Write-Host "[1/4] Ajout de file_picker..." -ForegroundColor Yellow
flutter pub add "file_picker:^11.0.3"
if ($LASTEXITCODE -ne 0) {
    throw "flutter pub add file_picker a echoue."
}

Write-Host "[2/4] Integration dans Reglages..." -ForegroundColor Yellow
$content = Get-Content $settingsPath -Raw

$importLine = "import '../widgets/memory_transfer_settings.dart';"
if ($content -notmatch [regex]::Escape($importLine)) {
    $anchorImport = "import '../services/preferred_language_service.dart';"
    if ($content.Contains($anchorImport)) {
        $content = $content.Replace(
            $anchorImport,
            "$anchorImport`r`n$importLine"
        )
    } else {
        $firstFlutterImport = "import 'package:flutter/material.dart';"
        if (-not $content.Contains($firstFlutterImport)) {
            throw "Impossible de trouver un point d'insertion pour l'import. Le fichier n'a pas ete modifie."
        }
        $content = $content.Replace(
            $firstFlutterImport,
            "$firstFlutterImport`r`n`r`n$importLine"
        )
    }
    Write-Host "[OK] Import MemoryTransferSettings ajoute." -ForegroundColor Green
} else {
    Write-Host "[OK] Import deja present." -ForegroundColor Green
}

if ($content -notmatch "const MemoryTransferSettings\(\)") {
    $marker = @"
          SizedBox(height: 14),
          _SettingsSection(
            title: 'Navigation',
"@

    $replacement = @"
          SizedBox(height: 14),
          const MemoryTransferSettings(),
          SizedBox(height: 14),
          _SettingsSection(
            title: 'Navigation',
"@

    if (-not $content.Contains($marker)) {
        # Variante CRLF normalisee par Get-Content -Raw / environnements differents.
        $regex = "(?ms)(\s*SizedBox\(height:\s*14\),\s*)(_SettingsSection\(\s*title:\s*'Navigation',)"
        if ($content -notmatch $regex) {
            throw "Section Navigation introuvable. Restauration du fichier d'origine."
        }
        $content = [regex]::Replace(
            $content,
            $regex,
            "`r`n          SizedBox(height: 14),`r`n          const MemoryTransferSettings(),`r`n          SizedBox(height: 14),`r`n          `$2",
            1
        )
    } else {
        $content = $content.Replace($marker, $replacement)
    }
    Write-Host "[OK] Bloc Memoire ajoute dans Reglages." -ForegroundColor Green
} else {
    Write-Host "[OK] Bloc Memoire deja present." -ForegroundColor Green
}

Set-Content -Path $settingsPath -Value $content -Encoding UTF8

Write-Host "[3/4] Formatage Dart..." -ForegroundColor Yellow
dart format ".\lib\services\memory_backup_service.dart" ".\lib\widgets\memory_transfer_settings.dart" $settingsPath
if ($LASTEXITCODE -ne 0) {
    throw "dart format a echoue."
}

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

Write-Host ""
Write-Host "[OK] Memoire Export / Import V1 installee." -ForegroundColor Green
Write-Host ""
Write-Host "Test Windows : flutter run -d windows"
Write-Host "Test Android : flutter run -d <ID_TELEPHONE>"
Write-Host ""