[CmdletBinding()]
param(
    [string]$OutputPath = ".\dist\MrTrust.exe"
)

$ErrorActionPreference = "Stop"

function Resolve-FullPath {
    param([Parameter(Mandatory)][string]$Path)

    $executionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($Path)
}

$root = Split-Path -Parent (Split-Path -Parent $MyInvocation.MyCommand.Path)
$sourcePath = Join-Path $root "src\MrTrustLauncher.cs"
$iconPath = Join-Path $root "assets\MrTrust.ico"
$resolvedOutputPath = Resolve-FullPath $OutputPath
$outputDirectory = Split-Path -Parent $resolvedOutputPath
$payloadFiles = @(
    @{ Path = "MrTrust.ps1"; ResourceName = "MrTrust.Payload.MrTrust.ps1" },
    @{ Path = "scripts\Build-MrTrustExe.ps1"; ResourceName = "MrTrust.Payload.scripts.Build-MrTrustExe.ps1" },
    @{ Path = "scripts\Install-MrTrust.ps1"; ResourceName = "MrTrust.Payload.scripts.Install-MrTrust.ps1" },
    @{ Path = "scripts\New-MrTrustCertificate.ps1"; ResourceName = "MrTrust.Payload.scripts.New-MrTrustCertificate.ps1" },
    @{ Path = "scripts\New-MrTrustIcon.ps1"; ResourceName = "MrTrust.Payload.scripts.New-MrTrustIcon.ps1" },
    @{ Path = "scripts\New-MrTrustRelease.ps1"; ResourceName = "MrTrust.Payload.scripts.New-MrTrustRelease.ps1" },
    @{ Path = "scripts\Sign-MrTrustProject.ps1"; ResourceName = "MrTrust.Payload.scripts.Sign-MrTrustProject.ps1" },
    @{ Path = "scripts\Start-MrTrustGui.ps1"; ResourceName = "MrTrust.Payload.scripts.Start-MrTrustGui.ps1" },
    @{ Path = "scripts\Uninstall-MrTrust.ps1"; ResourceName = "MrTrust.Payload.scripts.Uninstall-MrTrust.ps1" },
    @{ Path = "assets\MrTrust.ico"; ResourceName = "MrTrust.Payload.assets.MrTrust.ico" },
    @{ Path = "assets\certificates\MrSphay-LocalTrust-Root.cer"; ResourceName = "MrTrust.Payload.assets.certificates.MrSphay-LocalTrust-Root.cer" },
    @{ Path = "assets\certificates\MrSphay-CodeSigning.cer"; ResourceName = "MrTrust.Payload.assets.certificates.MrSphay-CodeSigning.cer" },
    @{ Path = "assets\certificates\thumbprints.txt"; ResourceName = "MrTrust.Payload.assets.certificates.thumbprints.txt" }
)

if (-not (Test-Path -LiteralPath $sourcePath)) {
    throw "Launcher source not found: $sourcePath"
}

if (-not (Test-Path -LiteralPath $iconPath)) {
    & (Join-Path $root "scripts\New-MrTrustIcon.ps1") -OutputPath $iconPath
}

foreach ($payloadFile in $payloadFiles) {
    $payloadPath = Join-Path $root $payloadFile.Path
    if (-not (Test-Path -LiteralPath $payloadPath)) {
        throw "Payload file not found: $payloadPath"
    }
}

New-Item -ItemType Directory -Force -Path $outputDirectory | Out-Null

$compilerCandidates = @(
    "$env:WINDIR\Microsoft.NET\Framework64\v4.0.30319\csc.exe",
    "$env:WINDIR\Microsoft.NET\Framework\v4.0.30319\csc.exe"
)

$compiler = $compilerCandidates | Where-Object { Test-Path -LiteralPath $_ } | Select-Object -First 1
if (-not $compiler) {
    throw "csc.exe was not found. Run this build on a Windows Gitea runner with .NET Framework installed."
}

$compilerArguments = @(
    "/nologo",
    "/target:winexe",
    "/optimize+",
    "/platform:anycpu",
    "/out:$resolvedOutputPath",
    "/win32icon:$iconPath",
    "/reference:System.Windows.Forms.dll",
    "/reference:System.Drawing.dll"
)

foreach ($payloadFile in $payloadFiles) {
    $payloadPath = Join-Path $root $payloadFile.Path
    $compilerArguments += "/resource:$payloadPath,$($payloadFile.ResourceName)"
}

$compilerArguments += $sourcePath

& $compiler @compilerArguments

if ($LASTEXITCODE -ne 0) {
    throw "csc.exe failed with exit code $LASTEXITCODE."
}

Write-Host "Created standalone EXE:"
Write-Host "  $resolvedOutputPath"