package main

import (
	"fmt"
	"os"
	"os/exec"
	"path/filepath"
	"time"

	"github.com/theater/picomap/lib/client"
	"github.com/theater/picomap/lib/picoserial"
	"github.com/theater/picomap/lib/picotool"
)

func main() {
	wd, err := os.Getwd()
	if err != nil {
		fmt.Fprintf(os.Stderr, "error: %v\n", err)
		os.Exit(1)
	}
	buildDir := filepath.Join(wd, "build")

	if err := run(buildDir); err != nil {
		fmt.Fprintf(os.Stderr, "error: %v\n", err)
		os.Exit(1)
	}
}

func run(buildDir string) error {
	fmt.Println("Building...")
	cmd := exec.Command("make", "-C", buildDir)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	if err := cmd.Run(); err != nil {
		return fmt.Errorf("build failed: %w", err)
	}

	dev, err := picoserial.FindDevice()
	if err != nil {
		return err
	}
	if dev != "" {
		fmt.Printf("Sending PICOBOOT request to %s...\n", dev)
		t, err := picoserial.Open(dev)
		if err != nil {
			return err
		}
		c := client.New(t, 2*time.Second)
		err = c.PICOBOOT()
		c.Close()
		if err != nil {
			fmt.Fprintf(os.Stderr, "warning: PICOBOOT request failed: %v\n", err)
		} else {
			fmt.Println("Device confirmed reboot into PICOBOOT mode.")
		}
		time.Sleep(2 * time.Second)
	}

	uf2 := filepath.Join(buildDir, "picomap.uf2")
	fmt.Println("Loading firmware...")
	if err := picotool.Load(uf2); err != nil {
		return err
	}

	fmt.Println("Rebooting...")
	_ = picotool.Reboot()

	time.Sleep(3 * time.Second)

	dev, err = picoserial.FindDevice()
	if err != nil {
		return err
	}
	if dev != "" {
		t, err := picoserial.Open(dev)
		if err != nil {
			return err
		}
		c := client.New(t, 2*time.Second)
		info, err := c.Info()
		c.Close()
		if err != nil {
			fmt.Fprintf(os.Stderr, "warning: Info request failed: %v\n", err)
		} else {
			fmt.Printf("Board ID: %02X%02X%02X%02X%02X%02X%02X%02X\n",
				info.BoardID[0], info.BoardID[1], info.BoardID[2], info.BoardID[3],
				info.BoardID[4], info.BoardID[5], info.BoardID[6], info.BoardID[7])
			fmt.Printf("MAC: %02X:%02X:%02X:%02X:%02X:%02X\n",
				info.MAC[0], info.MAC[1], info.MAC[2],
				info.MAC[3], info.MAC[4], info.MAC[5])
		}
	}

	fmt.Println("Done.")
	return nil
}