[CmdletBinding()]
param(
    [string]$Configuration = "Release",
    [string]$Runtime = "win-x64",
    [string]$Version = "1.0.0",
    [string]$AppName = "Avalonia-PC",
    [string]$Publisher = "QiCheng",
    [bool]$SelfContained = $true,
    [switch]$SingleFile,
    [switch]$InstallInnoSetupIfMissing,
    [switch]$SkipInstaller
)

$ErrorActionPreference = "Stop"

$repoRoot = Split-Path -Parent $PSScriptRoot
$projectPath = Join-Path $repoRoot "Avalonia-PC\Avalonia-PC.csproj"
$installerScript = Join-Path $PSScriptRoot "installer\Avalonia-PC.iss"
$buildStamp = Get-Date -Format "yyyyMMddHHmmss"
$publishDir = Join-Path $repoRoot "package-output\publish\Avalonia-PC\$Runtime-$buildStamp"
$installerDir = Join-Path $repoRoot "package-output\installer"
$appExeName = "Avalonia-PC.exe"
$toolsDir = Join-Path $PSScriptRoot "tools"
$innoSetupDir = Join-Path $toolsDir "InnoSetup6"
$innoSetupInstaller = Join-Path $toolsDir "downloads\innosetup-6.7.2.exe"
$innoSetupDownloadUrl = "https://github.com/jrsoftware/issrc/releases/download/is-6_7_2/innosetup-6.7.2.exe"
$chineseSimplifiedLanguageFile = Join-Path $innoSetupDir "Languages\ChineseSimplified.isl"
$chineseSimplifiedLanguageUrl = "https://raw.githubusercontent.com/kira-96/Inno-Setup-Chinese-Simplified-Translation/main/ChineseSimplified.isl"

function Find-InnoSetupCompiler {
    $localCompiler = Join-Path $innoSetupDir "ISCC.exe"
    if (Test-Path $localCompiler) {
        return $localCompiler
    }

    $command = Get-Command "iscc" -ErrorAction SilentlyContinue
    if ($command) {
        return $command.Source
    }

    $candidates = @(
        "${env:ProgramFiles(x86)}\Inno Setup 6\ISCC.exe",
        "$env:ProgramFiles\Inno Setup 6\ISCC.exe",
        "$env:LOCALAPPDATA\Programs\Inno Setup 6\ISCC.exe"
    )

    foreach ($candidate in $candidates) {
        if ($candidate -and (Test-Path $candidate)) {
            return $candidate
        }
    }

    return $null
}

function Install-LocalInnoSetup {
    New-Item -ItemType Directory -Force -Path (Split-Path -Parent $innoSetupInstaller), $innoSetupDir | Out-Null

    if (-not (Test-Path $innoSetupInstaller)) {
        Write-Host "Downloading Inno Setup 6 to: $innoSetupInstaller"
        Invoke-WebRequest -Uri $innoSetupDownloadUrl -OutFile $innoSetupInstaller
    }

    Write-Host "Installing local Inno Setup 6 to: $innoSetupDir"
    & $innoSetupInstaller /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /CURRENTUSER /DIR="$innoSetupDir"
    if ($LASTEXITCODE -ne 0) {
        throw "Inno Setup local install failed with exit code $LASTEXITCODE"
    }
}

function Ensure-ChineseSimplifiedLanguageFile {
    if (Test-Path $chineseSimplifiedLanguageFile) {
        return
    }

    $languageDir = Split-Path -Parent $chineseSimplifiedLanguageFile
    New-Item -ItemType Directory -Force -Path $languageDir | Out-Null

    Write-Host "Downloading Inno Setup Chinese language file to: $chineseSimplifiedLanguageFile"
    Invoke-WebRequest -Uri $chineseSimplifiedLanguageUrl -OutFile $chineseSimplifiedLanguageFile
}

if (-not (Test-Path $projectPath)) {
    throw "Project file not found: $projectPath"
}

if (-not (Test-Path $installerScript)) {
    throw "Installer script not found: $installerScript"
}

New-Item -ItemType Directory -Force -Path $publishDir, $installerDir | Out-Null

Write-Host "Publishing $AppName ($Configuration, $Runtime)..."

$publishArgs = @(
    "publish",
    $projectPath,
    "-c", $Configuration,
    "-r", $Runtime,
    "--self-contained", $SelfContained.ToString().ToLowerInvariant(),
    "-o", $publishDir,
    "/p:Version=$Version",
    "/p:PublishSingleFile=$($SingleFile.IsPresent.ToString().ToLowerInvariant())",
    "/p:IncludeNativeLibrariesForSelfExtract=true",
    "/p:PublishTrimmed=false",
    "/p:DebugType=None",
    "/p:DebugSymbols=false"
)

dotnet @publishArgs
if ($LASTEXITCODE -ne 0) {
    throw "dotnet publish failed with exit code $LASTEXITCODE"
}

Get-ChildItem -Path $publishDir -Filter "*.pdb" -Recurse -File | Remove-Item -Force

$publishedExe = Join-Path $publishDir $appExeName
if (-not (Test-Path $publishedExe)) {
    throw "Publish completed, but executable was not found: $publishedExe"
}

Write-Host "Publish output: $publishDir"

$localInnoCompiler = Join-Path $innoSetupDir "ISCC.exe"

if ($SkipInstaller) {
    Write-Host "SkipInstaller was specified. Installer package was not created."
    exit 0
}

if ($InstallInnoSetupIfMissing -and -not (Test-Path $localInnoCompiler)) {
    Install-LocalInnoSetup
}

$iscc = Find-InnoSetupCompiler
if (-not $iscc) {
    if ($InstallInnoSetupIfMissing) {
        Install-LocalInnoSetup
        $iscc = Find-InnoSetupCompiler
    }

    if (-not $iscc) {
        Write-Warning "Inno Setup compiler (ISCC.exe) was not found. Rerun package-scripts\package-pc.bat and let it download Inno Setup into package-scripts\tools."
        Write-Host "The publish output is ready at: $publishDir"
        exit 2
    }
}

Write-Host "Building installer with Inno Setup..."
Write-Host "Using Inno Setup compiler: $iscc"
Ensure-ChineseSimplifiedLanguageFile

$isccArgs = @(
    "/DAppName=$AppName",
    "/DAppVersion=$Version",
    "/DAppPublisher=$Publisher",
    "/DAppExeName=$appExeName",
    "/DSourceDir=$publishDir",
    "/DOutputDir=$installerDir",
    "/DRepoRoot=$repoRoot",
    "/DChineseLanguageFile=$chineseSimplifiedLanguageFile",
    $installerScript
)

& $iscc @isccArgs
if ($LASTEXITCODE -ne 0) {
    throw "Inno Setup failed with exit code $LASTEXITCODE"
}

$setupFile = Join-Path $installerDir "$AppName-Setup-$Version-$Runtime.exe"
Write-Host "Installer created: $setupFile"