# Builds everything the installer needs, into dist\:
#
#   dist\rsx-bridge.jar         the agent (-javaagent), Java 8
#   dist\rsx-api.jar            API a mod compiles against
#   dist\rsx-launcher-patch.jar launcher patcher with ASM inside
#   dist\mod-template\          ready-to-edit mod project
#
# Only a JDK is required: ASM is vendored under third_party\asm so the build
# works offline and the patcher jar is self-contained.

$ErrorActionPreference = 'Stop'
$Repo = Split-Path -Parent $PSScriptRoot
if (-not $Repo) { $Repo = $PSCommandPath | Split-Path -Parent | Split-Path -Parent }
$Dist = Join-Path $Repo 'dist'
$Out = Join-Path $Repo 'build'
$Asm = @(Get-ChildItem (Join-Path $Repo 'third_party\asm') -Filter '*.jar' |
    ForEach-Object { $_.FullName })

function Say($text) { Write-Host "  $text" }

if (-not (Get-Command javac -ErrorAction SilentlyContinue)) {
    Write-Host '  Нужен JDK (javac) в PATH.' -ForegroundColor Red
    exit 1
}
if ($Asm.Count -lt 2) {
    Write-Host '  Не найдены jar-ки ASM в third_party\asm.' -ForegroundColor Red
    exit 1
}

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

# ---------------------------------------------------------------- agent
$agentSrc = Join-Path $Repo 'bridge\src\main\java'
$agentOut = Join-Path $Out 'agent'
Remove-Item $agentOut -Recurse -Force -ErrorAction SilentlyContinue
New-Item -ItemType Directory -Force -Path $agentOut | Out-Null
$agentFiles = Get-ChildItem $agentSrc -Recurse -Filter '*.java' | ForEach-Object { $_.FullName }
& javac -encoding UTF-8 --release 8 -nowarn -d $agentOut $agentFiles
if ($LASTEXITCODE -ne 0) { Write-Host '  Агент не собрался.' -ForegroundColor Red; exit 1 }
Say "агент скомпилирован ($($agentFiles.Count) файлов)"

$manifest = Join-Path $Out 'agent-manifest.txt'
@"
Manifest-Version: 1.0
Premain-Class: rsx.RsxAgent
Can-Redefine-Classes: false
Can-Retransform-Classes: true

"@ | Set-Content -LiteralPath $manifest -Encoding ASCII

Push-Location $agentOut
& jar cfm (Join-Path $Dist 'rsx-bridge.jar') $manifest -C $agentOut .
Pop-Location
Say "rsx-bridge.jar ($((Get-Item (Join-Path $Dist 'rsx-bridge.jar')).Length) байт)"

# ---------------------------------------------------------------- api
$apiOut = Join-Path $Out 'api'
Remove-Item $apiOut -Recurse -Force -ErrorAction SilentlyContinue
New-Item -ItemType Directory -Force -Path $apiOut | Out-Null
$apiFiles = Get-ChildItem (Join-Path $Repo 'bridge\src\main\java\net') -Recurse -Filter '*.java' |
    ForEach-Object { $_.FullName }
# the API delegates to the agent internals, so they have to be on the
# classpath; only net/ classes end up in the published jar
& javac -encoding UTF-8 --release 8 -nowarn -cp $agentOut -d $apiOut $apiFiles
if ($LASTEXITCODE -ne 0) { Write-Host '  API не собрался.' -ForegroundColor Red; exit 1 }
Push-Location $apiOut
& jar cf (Join-Path $Dist 'rsx-api.jar') .
Pop-Location
Say "rsx-api.jar ($((Get-Item (Join-Path $Dist 'rsx-api.jar')).Length) байт)"

# ---------------------------------------------------------------- patcher
$patchOut = Join-Path $Out 'patcher'
Remove-Item $patchOut -Recurse -Force -ErrorAction SilentlyContinue
New-Item -ItemType Directory -Force -Path $patchOut | Out-Null
$patchSrc = Join-Path $Repo 'launcher-patch\src'
# Choice needs JavaFX, which only the launcher ships; it is compiled separately
# below with those jars on the classpath
$patchFiles = Get-ChildItem $patchSrc -Recurse -Filter '*.java' |
    Where-Object { $_.Name -ne 'Choice.java' } |
    ForEach-Object { $_.FullName }
& javac -encoding UTF-8 --release 8 -nowarn -cp ($Asm -join ';') -d $patchOut $patchFiles
if ($LASTEXITCODE -ne 0) { Write-Host '  Патчер не собрался.' -ForegroundColor Red; exit 1 }

# Choice talks to JavaFX, so the launcher's own runtime provides those classes
$javafx = Join-Path $env:APPDATA 'kjstudio\launcher\runtime\javafx\lib'
if (Test-Path $javafx) {
    $fx = @(Get-ChildItem $javafx -Filter '*.jar' | ForEach-Object { $_.FullName })
    & javac -encoding UTF-8 --release 8 -nowarn -cp ($fx -join ';') -d $patchOut `
        (Join-Path $patchSrc 'rsx\Choice.java')
    if ($LASTEXITCODE -ne 0) {
        Write-Host '  Choice не собрался: нужны JavaFX-jar-ки лаунчера.' -ForegroundColor Red
        exit 1
    }
} else {
    Say 'ВНИМАНИЕ: JavaFX лаунчера не найден, Choice собран вслепую'
}

# shade ASM so the jar runs on any machine
$shade = $patchOut
foreach ($jar in $Asm) {
    Push-Location $shade
    & jar xf $jar
    Pop-Location
}
Remove-Item (Join-Path $shade 'META-INF\MANIFEST.MF') -Force -ErrorAction SilentlyContinue
Remove-Item (Join-Path $shade 'META-INF\versions') -Recurse -Force -ErrorAction SilentlyContinue

$patchManifest = Join-Path $Out 'patcher-manifest.txt'
@"
Manifest-Version: 1.0
Main-Class: LauncherPatch

"@ | Set-Content -LiteralPath $patchManifest -Encoding ASCII
Push-Location $shade
& jar cfm (Join-Path $Dist 'rsx-launcher-patch.jar') $patchManifest -C $shade .
Pop-Location
Say "rsx-launcher-patch.jar ($((Get-Item (Join-Path $Dist 'rsx-launcher-patch.jar')).Length) байт)"

# ---------------------------------------------------------------- mod template
$tpl = Join-Path $Dist 'mod-template'
Remove-Item $tpl -Recurse -Force -ErrorAction SilentlyContinue
New-Item -ItemType Directory -Force -Path "$tpl\libs", "$tpl\src\main\java\com\example" | Out-Null
Copy-Item (Join-Path $Repo 'mod-template\build.gradle') $tpl -Force
Copy-Item (Join-Path $Repo 'mod-template\settings.gradle') $tpl -Force
Copy-Item (Join-Path $Repo 'mod-template\src\main\java\com\example\ExampleMod.java') `
    "$tpl\src\main\java\com\example\" -Force
Copy-Item (Join-Path $Dist 'rsx-api.jar') "$tpl\libs\" -Force
@'
@echo off
rem Builds this mod and drops the jar into the client's mods folder.
cd /d "%~dp0"
call gradle jar
if errorlevel 1 exit /b 1
echo.
echo Скопируй build\libs\example-mod.jar в working_dir\mods
'@ | Set-Content -LiteralPath (Join-Path $tpl 'build.cmd') -Encoding ASCII
Say 'mod-template готов'

Write-Host ''
Write-Host '  Готово:' -ForegroundColor Green
Get-ChildItem $Dist -File | ForEach-Object { Write-Host "    $($_.Name)" }