$ErrorActionPreference = "Stop"
Set-Location -LiteralPath $PSScriptRoot

Write-Host "[1/4] Installing build dependencies..."
python -m pip install -r requirements-build.txt
if ($LASTEXITCODE -ne 0) { throw "Dependency installation failed." }

Write-Host "[2/4] Generating application icon..."
python tools\generate_icon.py
if ($LASTEXITCODE -ne 0) { throw "Icon generation failed." }

Write-Host "[3/4] Running tests..."
python -m unittest discover -s tests -v
if ($LASTEXITCODE -ne 0) { throw "Tests failed." }

Write-Host "[4/4] Building single-file executable..."
python -m PyInstaller --noconfirm --clean ProcessDock.spec
if ($LASTEXITCODE -ne 0) { throw "PyInstaller build failed." }

$exe = Join-Path $PSScriptRoot "dist\ProcessDock.exe"
if (-not (Test-Path -LiteralPath $exe)) { throw "Build completed without an executable." }
$file = Get-Item -LiteralPath $exe
$hash = Get-FileHash -LiteralPath $exe -Algorithm SHA256

Write-Host ""
Write-Host "Build succeeded: $($file.FullName)"
Write-Host "Size: $([math]::Round($file.Length / 1MB, 1)) MB"
Write-Host "SHA256: $($hash.Hash)"