# Transmute CLI installer for Windows
# Usage: irm https://raw.githubusercontent.com/noauf/Transmute/main/install.ps1 | iex

$ErrorActionPreference = "Stop"

$REPO = "noauf/Transmute"
$BINARY = "transmute"

Write-Host ""
Write-Host "  Transmute CLI installer"
Write-Host "  ======================"
Write-Host ""

# Detect architecture
$ARCH = if ([System.Environment]::Is64BitOperatingSystem) {
    if ($env:PROCESSOR_ARCHITECTURE -eq "ARM64") { "arm64" } else { "x86_64" }
} else {
    Write-Host "  Error: 32-bit Windows is not supported" -ForegroundColor Red
    exit 1
}

Write-Host "  OS:   windows"
Write-Host "  Arch: $ARCH"
Write-Host ""

$ASSET = "$BINARY-windows-$ARCH.zip"

# Get latest release tag
Write-Host "  Fetching latest release..."
try {
    $release = Invoke-RestMethod -Uri "https://api.github.com/repos/$REPO/releases/latest" -Headers @{ "User-Agent" = "transmute-installer" }
    $TAG = $release.tag_name
} catch {
    Write-Host "  Error: could not fetch latest release: $_" -ForegroundColor Red
    exit 1
}

if (-not $TAG) {
    Write-Host "  Error: could not determine latest release" -ForegroundColor Red
    exit 1
}

Write-Host "  Latest version: $TAG"

$DOWNLOAD_URL = "https://github.com/$REPO/releases/download/$TAG/$ASSET"

# Create temp directory
$TMP_DIR = Join-Path $env:TEMP "transmute-install-$(Get-Random)"
New-Item -ItemType Directory -Path $TMP_DIR | Out-Null

try {
    $ZIP_PATH = Join-Path $TMP_DIR $ASSET

    Write-Host "  Downloading $ASSET..."
    Invoke-WebRequest -Uri $DOWNLOAD_URL -OutFile $ZIP_PATH -UseBasicParsing

    Write-Host "  Extracting..."
    Expand-Archive -Path $ZIP_PATH -DestinationPath $TMP_DIR -Force

    $EXE_NAME = "$BINARY.exe"
    $EXE_SOURCE = Join-Path $TMP_DIR "$BINARY-windows-$ARCH.exe"
    if (-not (Test-Path $EXE_SOURCE)) {
        $EXE_SOURCE = Join-Path $TMP_DIR $EXE_NAME
    }

    if (-not (Test-Path $EXE_SOURCE)) {
        Write-Host "  Error: could not find $EXE_NAME in archive" -ForegroundColor Red
        exit 1
    }

    # Determine install directory
    $INSTALL_DIR = "$env:LOCALAPPDATA\transmute\bin"
    New-Item -ItemType Directory -Path $INSTALL_DIR -Force | Out-Null

    $INSTALL_PATH = Join-Path $INSTALL_DIR $EXE_NAME
    Copy-Item -Path $EXE_SOURCE -Destination $INSTALL_PATH -Force

    Write-Host ""
    Write-Host "  Installed transmute $TAG to $INSTALL_PATH"
    Write-Host ""

    # Add to PATH if not already there
    $USER_PATH = [System.Environment]::GetEnvironmentVariable("PATH", "User")
    if ($USER_PATH -notlike "*$INSTALL_DIR*") {
        [System.Environment]::SetEnvironmentVariable("PATH", "$USER_PATH;$INSTALL_DIR", "User")
        Write-Host "  Added $INSTALL_DIR to your PATH."
        Write-Host "  Restart your terminal for the PATH change to take effect."
        Write-Host ""
    }

    Write-Host "  Get started:"
    Write-Host "    transmute *.png          Convert all PNGs"
    Write-Host "    transmute ./photos/      Convert all files in a directory"
    Write-Host "    transmute --help         Show all options"
    Write-Host ""

} finally {
    Remove-Item -Recurse -Force $TMP_DIR -ErrorAction SilentlyContinue
}