param(
  [Parameter(Position = 0)]
  [ValidateSet('assembleDebug', 'installDebug', 'assembleRelease')]
  [string]$Task = 'assembleDebug'
)

$ErrorActionPreference = 'Stop'
$projectRoot = Split-Path -Parent $PSScriptRoot
$documentsRoot = Split-Path -Parent $projectRoot
$wowRoot = Join-Path $documentsRoot 'wow335a'
$projectJdkRoot = Join-Path $projectRoot '.tools\temurin-21'
$legacyJdkRoot = Join-Path $wowRoot 'dungeon-export-work\tools\temurin-21'
$portableSdkRoot = Join-Path $wowRoot '.android-sdk'

$jdkHome = $null
$configuredJavaHome = [Environment]::GetEnvironmentVariable('JAVA_HOME')
if ($configuredJavaHome -and (Test-Path -LiteralPath (Join-Path $configuredJavaHome 'bin\java.exe'))) {
  $jdkHome = Get-Item -LiteralPath $configuredJavaHome
} else {
  $jdkHome = @($projectJdkRoot, $legacyJdkRoot) |
    ForEach-Object {
      Get-ChildItem -LiteralPath $_ -Directory -ErrorAction SilentlyContinue |
        Where-Object { Test-Path -LiteralPath (Join-Path $_.FullName 'bin\java.exe') }
    } |
    Sort-Object Name -Descending |
    Select-Object -First 1
}

if (-not $jdkHome) {
  throw "Java 21 was not found. Set JAVA_HOME or install the portable JDK under $projectJdkRoot"
}

$configuredSdkRoot = [Environment]::GetEnvironmentVariable('ANDROID_SDK_ROOT')
if (-not $configuredSdkRoot) { $configuredSdkRoot = [Environment]::GetEnvironmentVariable('ANDROID_HOME') }
$sdkRoot = if ($configuredSdkRoot -and (Test-Path -LiteralPath (Join-Path $configuredSdkRoot 'platforms\android-36\android.jar'))) {
  $configuredSdkRoot
} else {
  $portableSdkRoot
}
if (-not (Test-Path -LiteralPath (Join-Path $sdkRoot 'platforms\android-36\android.jar'))) {
  throw "Android SDK Platform 36 was not found. Set ANDROID_SDK_ROOT or install the portable SDK under $portableSdkRoot"
}

$env:JAVA_HOME = $jdkHome.FullName
$env:ANDROID_HOME = $sdkRoot
$env:ANDROID_SDK_ROOT = $sdkRoot
$gradleArguments = if ($Task -eq 'installDebug') {
  @('--no-daemon', 'installDebug')
} else {
  @('--no-daemon', 'clean', $Task)
}

Push-Location (Join-Path $projectRoot 'android')
try {
  & '.\gradlew.bat' @gradleArguments
  if ($LASTEXITCODE -ne 0) {
    throw "Gradle $Task failed with exit code $LASTEXITCODE"
  }
  $packageType = if ($Task -eq 'assembleRelease') { 'release' } else { 'debug' }
  $packageDirectory = Join-Path $projectRoot "android\app\build\outputs\apk\$packageType"
  $builtPackage = Get-ChildItem -LiteralPath $packageDirectory -Filter '*.apk' |
    Sort-Object LastWriteTime -Descending | Select-Object -First 1
  if (-not $builtPackage) { throw "No APK was produced in $packageDirectory" }
  & python (Join-Path $projectRoot 'scripts\content\verify-android-package.py') $builtPackage.FullName
  if ($LASTEXITCODE -ne 0) { throw "Packaged content verification failed." }
} finally {
  Pop-Location
}