<#
.SYNOPSIS
    Publishes the alpha distribution feed into the repo's /bin folder.

.DESCRIPTION
    Builds self-contained client and launcher payloads, zips them, and writes
    bin/manifest.json pointing at this repository's PUBLIC Gitea raw URLs.
    Commit and push /bin afterwards and the launcher's "Check for updates"
    finds the new build — no release server, no tokens, no CDN.

    Payload contents (what the launcher expects to find at each zip root):
      client-<rid>.zip    AcDream.App[.exe] + acdream-headless[.exe]
      launcher-<rid>.zip  acdream-launcher[.exe] + acdream-bake[.exe]
                          (the launcher csproj co-deploys the bake CLI)

    The launcher's own published version is stamped to the manifest version so
    a freshly published launcher does NOT report itself as out of date.

.PARAMETER Version
    SemVer 2.0 release version. Defaults to a monotonic UTC build stamp,
    e.g. 0.1.0-build.202608181552. Must sort ABOVE the previous published
    version or the launcher will not offer it as an update.

.PARAMETER IncludeLinux
    Also publish linux-x64 payloads. Off by default: Linux graphical is parked
    at Slice L1, and each RID roughly doubles build time and feed size.

.EXAMPLE
    pwsh -NoProfile -File tools/publish-bin.ps1
    git add bin
    git commit -m "release: alpha build"
    git push origin main
#>
[CmdletBinding()]
param(
    [string]$Version,
    [string]$BaseUrl,
    [switch]$IncludeLinux,
    [string]$MinimumLauncherVersion = '0.0.1'
)

Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'

if ($PSVersionTable.PSVersion.Major -lt 7) {
    throw 'publish-bin requires PowerShell 7 or newer.'
}

$RepoRoot = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '..'))
if (-not (Test-Path (Join-Path $RepoRoot 'AcDream.slnx'))) {
    throw "Could not locate AcDream.slnx above '$PSScriptRoot'."
}

if ([string]::IsNullOrWhiteSpace($Version)) {
    $Version = '0.1.0-build.{0}' -f ([DateTime]::UtcNow.ToString('yyyyMMddHHmm'))
}

$semver = '^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?$'
foreach ($candidate in @($Version, $MinimumLauncherVersion)) {
    if ($candidate -notmatch $semver) {
        throw "Version '$candidate' is not SemVer 2.0 (build metadata '+' is not allowed here)."
    }
}

# Where the manifest says the payloads live. The CI pipeline passes the Gitea
# RELEASE asset base for the tag it is publishing, so payloads live outside git
# entirely; the default keeps the older dist-branch layout working for a manual
# local publish. The manifest itself always stays at the stable dist raw URL
# that ReleaseManifestClient.ProductionManifestUri points at.
$RawBase = if ([string]::IsNullOrWhiteSpace($BaseUrl)) {
    'https://git.snakedesert.se/erik/acdream/raw/branch/dist/bin'
} else {
    $BaseUrl.TrimEnd('/')
}

$BinRoot = Join-Path $RepoRoot 'bin'
$Staging = Join-Path $BinRoot 'payload'
$Rids = @('win-x64')
if ($IncludeLinux) { $Rids += 'linux-x64' }

Write-Host "acdream alpha feed" -ForegroundColor Cyan
Write-Host "  version : $Version"
Write-Host "  rids    : $($Rids -join ', ')"
Write-Host "  output  : $BinRoot"
Write-Host ''

if (Test-Path $Staging) { Remove-Item -LiteralPath $Staging -Recurse -Force }
$null = New-Item -ItemType Directory -Path $Staging -Force

function Invoke-Publish {
    param(
        [Parameter(Mandatory)][string]$Project,
        [Parameter(Mandatory)][string]$Rid,
        [Parameter(Mandatory)][string]$OutputDirectory,
        [switch]$SingleFile
    )

    $arguments = @(
        'publish', (Join-Path $RepoRoot $Project),
        '-c', 'Release',
        '-r', $Rid,
        '--self-contained', 'true',
        # InformationalVersion ONLY — never -p:Version. The launcher reads
        # AssemblyInformationalVersion (App.GetLauncherVersion), while Version
        # also rewrites project-reference versions inside the committed
        # packages.<rid>.lock.json files, so stamping it churned every lock
        # file with a throwaway build stamp (observed 2026-08-18).
        "-p:InformationalVersion=$Version",
        # No SourceLink '+<sha>' suffix: LauncherVersion parses this as SemVer.
        '-p:IncludeSourceRevisionInInformationalVersion=false',
        '-o', $OutputDirectory,
        '--nologo'
    )
    if ($SingleFile) { $arguments += '-p:PublishSingleFile=true' }

    & dotnet @arguments | Out-Null
    if ($LASTEXITCODE) { throw "publish failed: $Project ($Rid)" }
}

function Remove-DebugSymbols {
    param([Parameter(Mandatory)][string]$Directory)

    # Players never load these, and the native ones are enormous: a stock
    # Avalonia publish ships libSkiaSharp.pdb (80 MB) and
    # libHarfBuzzSharp.pdb (20 MB), which alone were 100 MB of a 278 MB
    # launcher payload (measured 2026-08-18). MSBuild's DebugType switches
    # only govern OUR managed symbols, not the native .pdb files that arrive
    # as package runtime assets, so drop them from the payload directly.
    $symbols = @(Get-ChildItem -LiteralPath $Directory -Recurse -File -Filter *.pdb)
    if ($symbols.Count -eq 0) { return }
    $freed = ($symbols | Measure-Object -Property Length -Sum).Sum
    $symbols | Remove-Item -Force
    '    stripped {0} debug symbol file(s), {1:N1} MB' -f $symbols.Count, ($freed / 1MB) |
        Write-Host -ForegroundColor DarkGray
}

function New-PayloadZip {
    param(
        [Parameter(Mandatory)][string]$SourceDirectory,
        [Parameter(Mandatory)][string]$ZipPath,
        [Parameter(Mandatory)][string[]]$RequiredFiles
    )

    Remove-DebugSymbols $SourceDirectory

    foreach ($required in $RequiredFiles) {
        if (-not (Test-Path -LiteralPath (Join-Path $SourceDirectory $required))) {
            throw "Payload '$SourceDirectory' is missing required file '$required'."
        }
    }

    if (Test-Path -LiteralPath $ZipPath) { Remove-Item -LiteralPath $ZipPath -Force }
    # includeBaseDirectory:$false -> entries sit at the zip ROOT, which is where
    # LauncherExecutableSet resolves the hosts after extraction.
    [IO.Compression.ZipFile]::CreateFromDirectory(
        $SourceDirectory,
        $ZipPath,
        [IO.Compression.CompressionLevel]::Optimal,
        $false)
}

function Get-Artifact {
    param(
        [Parameter(Mandatory)][string]$ZipPath,
        [Parameter(Mandatory)][string]$Url
    )

    $item = Get-Item -LiteralPath $ZipPath
    return [ordered]@{
        url    = $Url
        sha256 = (Get-FileHash -LiteralPath $ZipPath -Algorithm SHA256).Hash.ToLowerInvariant()
        size   = $item.Length
    }
}

Add-Type -AssemblyName System.IO.Compression.FileSystem -ErrorAction SilentlyContinue

$clients = [ordered]@{}
$launchers = [ordered]@{}

foreach ($rid in $Rids) {
    $suffix = if ($rid -like 'win-*') { '.exe' } else { '' }
    $clientDirectory = Join-Path $Staging "client-$rid"
    $launcherDirectory = Join-Path $Staging "launcher-$rid"

    Write-Host "[$rid] publishing client (App + Headless)..." -ForegroundColor Yellow
    Invoke-Publish 'src/AcDream.App/AcDream.App.csproj' $rid $clientDirectory
    Invoke-Publish 'src/AcDream.Headless/AcDream.Headless.csproj' $rid $clientDirectory

    # PublishSingleFile/SelfContained come from the launcher csproj itself, and
    # its PublishCoDeployedBakeTool target adds acdream-bake as a SECOND
    # self-contained single file in the same directory. Two independent .NET
    # runtimes is deliberate (see that csproj's comments: a framework-dependent
    # bake would scatter AcDream.Content assemblies into the launcher's output),
    # so this payload is ~103 MB and CANNOT be pushed to GitHub, whose hard
    # per-file limit is 100 MB. The alpha feed is Gitea-only by design.
    Write-Host "[$rid] publishing launcher (+ co-deployed bake)..." -ForegroundColor Yellow
    Invoke-Publish 'src/AcDream.Launcher/AcDream.Launcher.csproj' $rid $launcherDirectory

    $clientZip = Join-Path $BinRoot "client-$rid.zip"
    $launcherZip = Join-Path $BinRoot "launcher-$rid.zip"

    Write-Host "[$rid] packing..." -ForegroundColor Yellow
    New-PayloadZip $clientDirectory $clientZip @("AcDream.App$suffix", "acdream-headless$suffix")
    New-PayloadZip $launcherDirectory $launcherZip @("acdream-launcher$suffix", "acdream-bake$suffix")

    $clients[$rid] = Get-Artifact $clientZip "$RawBase/client-$rid.zip"
    $launchers[$rid] = Get-Artifact $launcherZip "$RawBase/launcher-$rid.zip"
}

$manifest = [ordered]@{
    schemaVersion          = 1
    version                = $Version
    minimumLauncherVersion = $MinimumLauncherVersion
    clients                = $clients
    launchers              = $launchers
}

$manifestPath = Join-Path $BinRoot 'manifest.json'
$json = $manifest | ConvertTo-Json -Depth 6
[IO.File]::WriteAllText($manifestPath, $json + "`n", [Text.UTF8Encoding]::new($false))

Remove-Item -LiteralPath $Staging -Recurse -Force

Write-Host ''
Write-Host 'Feed written:' -ForegroundColor Green
$total = 0L
foreach ($file in (Get-ChildItem -LiteralPath $BinRoot -File | Sort-Object Name)) {
    $total += $file.Length
    '  {0,-26} {1,10:N1} MB' -f $file.Name, ($file.Length / 1MB) | Write-Host
}
'  {0,-26} {1,10:N1} MB' -f 'TOTAL', ($total / 1MB) | Write-Host
# A RID-specific restore rewrites packages.<rid>.lock.json for the projects it
# touches, so a feed build can leave the working tree dirty even though nothing
# about the source changed. Report it rather than silently reverting: the files
# are the developer's, and a real dependency change must not be swallowed here.
$dirtyLocks = @(
    @(& git -C $RepoRoot status --porcelain -- '*packages.*.lock.json' 2>$null) |
        Where-Object { $_ }
)
if ($dirtyLocks.Count -gt 0) {
    Write-Host ''
    Write-Host 'Note: the RID restore modified these lock files:' -ForegroundColor Yellow
    $dirtyLocks | ForEach-Object { "  $($_.Trim())" | Write-Host }
    Write-Host '  If you did not change dependencies, discard them:' -ForegroundColor DarkGray
    Write-Host "  git checkout -- '*packages.*.lock.json'" -ForegroundColor DarkGray
}

Write-Host ''
Write-Host 'Next — publish the feed to Gitea:' -ForegroundColor Cyan
Write-Host "  pwsh -NoProfile -File tools/publish-dist.ps1"
Write-Host ''
Write-Host '  (bin/ is gitignored on purpose: publish-dist puts it on the' -ForegroundColor DarkGray
Write-Host '   Gitea-only dist branch, never on main / GitHub.)' -ForegroundColor DarkGray