param([switch]$Test, [switch]$Integration, [switch]$Ocr, [switch]$Stage)
$ErrorActionPreference = 'Stop'
$root = $PSScriptRoot
$compiler = Join-Path $root '.tools\w64devkit\bin\g++.exe'
if (!(Test-Path $compiler)) {
    $compiler = (Get-Command g++ -ErrorAction Stop).Source
}
$env:PATH = (Split-Path $compiler) + ';' + $env:PATH
$outDir = Join-Path $root 'build'
New-Item -ItemType Directory -Force $outDir | Out-Null
$executablePath = if ($Stage) { Join-Path $outDir 'staged\KSwitcher.exe' } else { Join-Path $outDir 'KSwitcher.exe' }
New-Item -ItemType Directory -Force (Split-Path $executablePath) | Out-Null
Push-Location $root
try {
    $common = @('-std=c++20','-Os','-DNDEBUG','-DUNICODE','-D_UNICODE','-DWIN32_LEAN_AND_MEAN','-DNOMINMAX','-D_WIN32_WINNT=0x0A00','-Wall','-Wextra','-Wno-missing-field-initializers','-Isrc','-Ivendor','-ffunction-sections','-fdata-sections')
    $libs = @('-luser32','-lshell32','-ladvapi32','-lcrypt32','-limm32','-lcomctl32','-lgdi32','-lole32','-loleaut32','-ltaskschd','-lcomdlg32','-luuid','-lwindowscodecs','-lruntimeobject','-luiautomationcore')
    foreach ($name in @('core','platform','autostart','autocorrect','storage','ocr','richtext','update','app','ui','main')) {
        & $compiler @common -c "src/$name.cpp" -o "build/$name.o"
        if ($LASTEXITCODE) { throw "Compilation failed: $name" }
    }
    & windres --codepage=65001 resources/app.rc -O coff -o build/app-res.o
    if ($LASTEXITCODE) { throw 'Resource compilation failed' }
    New-Item -ItemType Directory -Force build/release | Out-Null
    & $compiler -mwindows -municode -static -s '-Wl,--gc-sections' build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/app.o build/ui.o build/main.o build/app-res.o @libs -o $executablePath
    if ($LASTEXITCODE) { throw 'Link failed' }
    Copy-Item -LiteralPath $executablePath -Destination build/release/KSwitcher.exe -Force
    if ($Test) {
        & $compiler @common tests/tests.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o @libs -static -s -o build/KSwitcherTests.exe
        if ($LASTEXITCODE) { throw 'Test build failed' }
        & .\build\KSwitcherTests.exe
        if ($LASTEXITCODE) { throw 'Tests failed' }
        & $compiler @common tests/input.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/app.o build/ui.o build/app-res.o @libs -static -s -o build/KSwitcherInputTests.exe
        if ($LASTEXITCODE) { throw 'Input test build failed' }
        & .\build\KSwitcherInputTests.exe
        if ($LASTEXITCODE) { throw 'Input tests failed' }
        & "$env:SystemRoot\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File tests/update.ps1 -Executable $executablePath
        if ($LASTEXITCODE) { throw 'Updater tests failed' }
    }
    if ($Integration) {
        & $compiler @common tests/integration.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/app.o build/ui.o build/app-res.o @libs -static -s -o build/KSwitcherIntegration.exe
        if ($LASTEXITCODE) { throw 'Integration test build failed' }
        & .\build\KSwitcherIntegration.exe
        if ($LASTEXITCODE) { throw 'Integration tests failed' }
    }
    if ($Ocr) {
        & $compiler @common tests/ocr.cpp build/core.o build/platform.o build/ocr.o @libs -static -s -o build/KSwitcherOcrTests.exe
        if ($LASTEXITCODE) { throw 'OCR test build failed' }
        & .\build\KSwitcherOcrTests.exe
        if ($LASTEXITCODE) { throw 'OCR tests failed' }
    }
    foreach ($folder in @('build/dictionaries','build/release/dictionaries','build/staged/dictionaries')) {
        New-Item -ItemType Directory -Force $folder | Out-Null
        Copy-Item -Path dictionaries/* -Destination $folder -Force
    }
    Get-Item build/release/KSwitcher.exe | Select-Object FullName,Length
} finally { Pop-Location }