param()
$ErrorActionPreference = 'Stop'
$root = (Resolve-Path (Join-Path $PSScriptRoot '..\..')).Path
Push-Location $root
try {
    $game = Join-Path $root 'build\graphics\poker.exe'
    $sourcePath = Join-Path $root 'build\AssemblerCasinoLauncher.cs'
    $source = [IO.File]::ReadAllText($sourcePath, [Text.Encoding]::UTF8)
    $hash = (Get-FileHash -LiteralPath $game -Algorithm SHA256).Hash
    $pattern = 'ExpectedPokerSha256 = "[A-Fa-f0-9]{64}"'
    if ([regex]::Matches($source, $pattern).Count -ne 1) {
        throw 'Launcher integrity constant is missing or ambiguous'
    }
    # Mechanical synchronization of the release hash, not a change to integrity policy.
    $source = [regex]::Replace($source, $pattern, ('ExpectedPokerSha256 = "' + $hash + '"'))
    $stage = Join-Path $root 'build\startup'
    New-Item -ItemType Directory -Path $stage -Force | Out-Null
    $stageSource = Join-Path $stage 'AssemblerCasinoLauncher.cs'
    [IO.File]::WriteAllText($stageSource, $source, [Text.UTF8Encoding]::new($false))
    $csc = Join-Path $env:WINDIR 'Microsoft.NET\Framework\v4.0.30319\csc.exe'
    if (!(Test-Path -LiteralPath $csc)) { throw '.NET Framework C# compiler is required to update the existing launcher' }
    & $csc /nologo /target:winexe /platform:x86 /reference:System.Windows.Forms.dll /win32icon:assets\icons\casino.ico "/out:$stage\Assembler Casino.exe" $stageSource
    if ($LASTEXITCODE -ne 0) { throw 'Launcher compilation failed; game was not published' }
    Copy-Item -LiteralPath $game -Destination (Join-Path $root 'poker.exe')
    Copy-Item -LiteralPath $game -Destination (Join-Path $root 'bin\poker.exe')
    Copy-Item -LiteralPath (Join-Path $stage 'Assembler Casino.exe') -Destination (Join-Path $root 'dist\Assembler Casino.exe')
    [IO.File]::WriteAllText($sourcePath, $source, [Text.UTF8Encoding]::new($false))
    foreach ($file in @('poker.exe', 'bin\poker.exe', 'build\graphics\poker.exe')) {
        if ((Get-FileHash -LiteralPath $file -Algorithm SHA256).Hash -ne $hash) {
            throw "Published binary mismatch: $file"
        }
    }
    Write-Output "Published the same graphical build to root/bin and updated the launcher: $hash"
} finally { Pop-Location }