param(
    [string]$ProjectRoot = $PSScriptRoot
)

$ErrorActionPreference = "Stop"

$androidRoot = Join-Path $ProjectRoot "android"
$rootGradle = Join-Path $androidRoot "build.gradle.kts"
$appGradle = Join-Path $androidRoot "app\build.gradle.kts"

if (-not (Test-Path $rootGradle)) {
    throw "Introuvable: $rootGradle"
}

if (-not (Test-Path $appGradle)) {
    throw "Introuvable: $appGradle"
}

function Backup-Once([string]$Path) {
    $backup = "$Path.before_hd"
    if (-not (Test-Path $backup)) {
        Copy-Item $Path $backup
        Write-Host "Backup: $backup"
    }
}

Backup-Once $rootGradle
Backup-Once $appGradle

$rootText = Get-Content $rootGradle -Raw

if ($rootText -notmatch 'https://jitpack\.io') {
    $needle = 'mavenCentral()'

    if (-not $rootText.Contains($needle)) {
        throw "Impossible de trouver mavenCentral() dans android/build.gradle.kts"
    }

    $replacement = @'
mavenCentral()
        maven { url = uri("https://jitpack.io") }
'@

    $rootText = $rootText.Replace(
        $needle,
        $replacement
    )

    Set-Content -Path $rootGradle -Value $rootText -Encoding UTF8
    Write-Host "JitPack ajoute."
} else {
    Write-Host "JitPack deja present."
}

$appText = Get-Content $appGradle -Raw

# Nettoie les blocs kotlin/compilerOptions qui ont pu être ajoutés par
# les premières versions du script HD. Ils ne sont pas nécessaires ici:
# AGP 9 fait hériter le jvmTarget de compileOptions.targetCompatibility.
$kotlinCompilerBlock = '(?ms)[ \t]*kotlin\s*\{\s*compilerOptions\s*\{\s*jvmTarget\s*=\s*org\.jetbrains\.kotlin\.gradle\.dsl\.JvmTarget\.JVM_17\s*\}\s*\}\s*'

$appText = [regex]::Replace(
    $appText,
    $kotlinCompilerBlock,
    ''
)

if (
    $appText -notmatch 'isCoreLibraryDesugaringEnabled\s*=\s*true'
) {
    $targetNeedle =
        'targetCompatibility = JavaVersion.VERSION_17'

    if (-not $appText.Contains($targetNeedle)) {
        throw "Impossible de trouver targetCompatibility Java 17 dans android/app/build.gradle.kts"
    }

    $targetReplacement = @'
targetCompatibility = JavaVersion.VERSION_17
        isCoreLibraryDesugaringEnabled = true
'@

    $appText = $appText.Replace(
        $targetNeedle,
        $targetReplacement
    )

    Write-Host "Core library desugaring active."
}

if ($appText -notmatch 'NewPipeExtractor:v0\.26\.3') {
    $dependencyBlock = @'

dependencies {
    implementation("com.github.TeamNewPipe:NewPipeExtractor:v0.26.3")
    implementation("com.squareup.okhttp3:okhttp:4.12.0")
    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs_nio:2.1.5")
}
'@

    $appText = $appText.TrimEnd() + "`r`n" + $dependencyBlock + "`r`n"
    Write-Host "Dependances HD ajoutees."
} else {
    Write-Host "Dependances HD deja presentes."
}

Set-Content -Path $appGradle -Value $appText -Encoding UTF8

Write-Host ""
Write-Host "Configuration HD Android appliquee."
Write-Host "Lance ensuite:"
Write-Host "  flutter clean"
Write-Host "  flutter pub get"
Write-Host "  flutter run -d f10778d8"