package main

import (
	"context"
	"embed"
	"flag"
	"fmt"
	"log"
	"os"
	"time"

	"github.com/wailsapp/wails/v2"
	"github.com/wailsapp/wails/v2/pkg/options"
	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
	"github.com/wailsapp/wails/v2/pkg/options/mac"
)

//go:embed all:frontend/dist
var assets embed.FS

//go:embed static/vectors/Former.svg
var formerLogoSVG []byte

func main() {
	// CLI flags
	flagHeight := flag.Float64("height", DefaultStencilHeight, "Stencil height in mm")
	flagWallHeight := flag.Float64("wall-height", DefaultWallHeight, "Wall height in mm")
	flagWallThickness := flag.Float64("wall-thickness", DefaultWallThickness, "Wall thickness in mm")
	flagDPI := flag.Float64("dpi", DefaultDPI, "DPI for rendering")
	flagKeepPNG := flag.Bool("keep-png", false, "Save intermediate PNG file")

	flag.Parse()

	// If files are passed as arguments, run in CLI mode
	if flag.NArg() > 0 {
		cfg := Config{
			StencilHeight: *flagHeight,
			WallHeight:    *flagWallHeight,
			WallThickness: *flagWallThickness,
			DPI:           *flagDPI,
			KeepPNG:       *flagKeepPNG,
		}
		runCLI(cfg, flag.Args())
		return
	}

	// Ensure working directories exist
	cwd, _ := os.Getwd()
	debugLog("CWD: %s", cwd)
	debugLog("Ensuring ~/former dirs (includes temp)...")
	ensureFormerDirs()
	debugLog("Startup complete, launching GUI")

	runGUI()
}

func runCLI(cfg Config, args []string) {
	if len(args) < 1 {
		fmt.Println("Usage: former [options] <gerber_file> [outline_file]")
		fmt.Println("       former  (no args = launch GUI)")
		flag.PrintDefaults()
		os.Exit(1)
	}
	gerberPath := args[0]
	var outlinePath string
	if len(args) > 1 {
		outlinePath = args[1]
	}
	_, _, _, err := processPCB(gerberPath, outlinePath, cfg, []string{"stl"})
	if err != nil {
		log.Fatalf("Error: %v", err)
	}
	fmt.Println("Success! Happy printing.")
}

func runGUI() {
	imageServer := NewImageServer()
	app := NewApp(imageServer)

	err := wails.Run(&options.App{
		Title:     "Former",
		Width:     960,
		Height:    720,
		MinWidth:  640,
		MinHeight: 480,
		AssetServer: &assetserver.Options{
			Assets:  assets,
			Handler: imageServer,
		},
		OnStartup: app.startup,
		OnBeforeClose: func(ctx context.Context) (prevent bool) {
			// Force-exit after brief grace period to prevent ghost PIDs on macOS
			go func() {
				time.Sleep(500 * time.Millisecond)
				os.Exit(0)
			}()
			return false
		},
		Bind: []interface{}{
			app,
		},
		Mac: &mac.Options{
			TitleBar: mac.TitleBarHiddenInset(),
			About: &mac.AboutInfo{
				Title:   "Former",
				Message: "PCB Stencil & Enclosure Generator",
			},
			WebviewIsTransparent: true,
			WindowIsTranslucent:  false,
		},
	})

	if err != nil {
		log.Fatal(err)
	}
}