# Launches the compiled fork as an ordinary client: no agent, no injection.
#
#   run-game.ps1 [-Run <dir>] [-Java <exe>] [-ExtraArgs <string[]>]
#
# Stage first if run\classpath.txt is missing:
#   python tools\stage_run.py <run> ..\..\game-fork\build\classes <meta>

   param(
     [string]$Run = 'G:\RustNotMC\run',
     [string]$Java = '',
     [string[]]$ExtraArgs = @(),
     [string]$Token = '',
     [int]$Width = 1280,
     [int]$Height = 720
   )

$ErrorActionPreference = 'Stop'
$root = 'G:\RustNotMC'

if (-not (Test-Path (Join-Path $Run 'classpath.txt'))) {
  throw "no classpath.txt in $Run - run stage_run.py first"
}

if (-not $Java) {
  $Java = Get-ChildItem "$env:APPDATA\AstralRinthApp\meta\java_versions" `
    -Directory | Where-Object { $_.Name -like 'zulu17*' } | ForEach-Object {
      Get-ChildItem $_.FullName -Recurse -Filter 'java.exe' -ErrorAction SilentlyContinue |
        Select-Object -First 1 } | Select-Object -First 1 -ExpandProperty FullName
}
if (-not $Java) { throw 'no Java 17 found' }

# The launcher's asset store is index-based: indexes/1.12.json pointing at
# objects/<aa>/<sha1>. A 1.12.2 client wants <assetsDir>/minecraft/<path> and
# will not look in either of those. Pointing --assetsDir at the store root
# leaves the game running and looking correct, because language and textures
# come from the jar, while every sound is silently missing.
$store = "$env:APPDATA\AstralRinthApp\meta\assets"
$assets = Join-Path $Run 'assets'
& python (Join-Path $root 'rsx-client\tools\materialize_assets.py') $store $assets --index 1.12
if ($LASTEXITCODE -ne 0) { throw 'asset materialisation failed' }

$cp = (Get-Content (Join-Path $Run 'classpath.txt') -Raw).Trim()
$natives = Join-Path $Run 'natives'

# built as strings first: mixing '+' into an array literal folds the whole
# list into one element, because the comma binds tighter than the concatenation
$javaArgs = @()
$javaArgs += "-Djava.library.path=$natives"
$javaArgs += "-Dorg.lwjgl.librarypath=$natives"
$javaArgs += '-Dfile.encoding=UTF-8'
$javaArgs += '-cp'
$javaArgs += $cp
$javaArgs += 'net.minecraft.client.main.Main'
# singleplayer-only session: the client never validates this against Mojang
$javaArgs += '--username';   $javaArgs += 'Player'
$javaArgs += '--version';    $javaArgs += '1.12.2'
$javaArgs += '--gameDir';    $javaArgs += $Run
$javaArgs += '--assetsDir';  $javaArgs += $assets
$javaArgs += '--uuid';       $javaArgs += '00000000000000000000000000000000'
   $javaArgs += '--accessToken'; $javaArgs += $(if ($Token) { $Token } else { '0' })
$javaArgs += '--userType';   $javaArgs += 'legacy'
$javaArgs += '--versionType'; $javaArgs += 'release'
$javaArgs += '--width';      $javaArgs += "$Width"
$javaArgs += '--height';     $javaArgs += "$Height"
$javaArgs += $ExtraArgs

Write-Host "java   : $Java"
Write-Host "game   : $Run"
Write-Host "assets : $assets"
Write-Host "args   : $($javaArgs.Count)"
& $Java @javaArgs
exit $LASTEXITCODE