// Copyright 2024 WIT.COM Inc Licensed GPL 3.0

package main

import (
	"embed"
	"os"
	"path/filepath"
	"strings"
	"errors"

	"go.wit.com/dev/alexflint/arg"
	"go.wit.com/log"
	pb "go.wit.com/lib/protobuf/virtbuf"
)

var Version string

//go:embed resources/*
var resources embed.FS

var urlbase string = "http://localhost:8080"

func main() {
	var pp *arg.Parser
	pp = arg.MustParse(&argv)

	if pp == nil {
		pp.WriteHelp(os.Stdout)
		os.Exit(0)
	}
	if argv.Dump != nil {
		if argv.Dump.Droplets {
			dumpDroplets()
			os.Exit(0)
		}
		log.Info("dump something here")
		os.Exit(0)
	}
	if argv.Create != nil {
		dir := filepath.Dir(argv.Create.Filename)
		filename := filepath.Base(argv.Create.Filename)
		if err := createFilename(dir, filename); err != nil {
			log.Info("create failed", err)
			os.Exit(-1)
		}
		log.Info("create worked")
		os.Exit(0)
	}
	if argv.Start != nil {
		log.Info("start the vm's here:", argv.Start)
		os.Exit(0)
	}
}

func dumpDroplets() error {
	log.DaemonMode(true)
	log.Info("dump droplets here ==", argv.Dump.Droplets)
	url := urlbase + "/dumpdroplets"
	body, err := httpPost(url, nil)
	if err != nil {
		log.Info("httpPost() failed:", err)
		return err
	}

	test := strings.TrimSpace(string(body))
	// log.Info("virtigo returned body:", test)
	for _, line := range strings.Split(test, "\n") {
		log.Info("GOT:", line)
	}
	return nil
}

func createFilename(dir string, filename string) error {
	log.Info("dir ==", dir)
	log.Info("filename ==", filename)

	filetype := filepath.Ext(filename)
	if filetype != ".qcow2" {
		log.Info("file type", filetype, "not supported")
		return errors.New("only supporting qcow2 images for now")
	}
	hostname := strings.TrimSuffix(filename, filetype)
	log.Info("hostname ==", hostname)

	var newDroplet *pb.Droplet
	newDroplet = new(pb.Droplet)
	newDroplet.Hostname = hostname
	newDisk := new(pb.Disk)
	newDisk.Filename = filename
	newDisk.Filepath = dir
	newDroplet.Disks = append(newDroplet.Disks, newDisk)

	bytes, err := newDroplet.MarshalJSON()
	if err != nil {
		log.Info("virtbuf.MarshalJson() failed:", err)
		return err
	}

	url := urlbase + "/create"
	body, err := httpPost(url, bytes)
	if err != nil {
		log.Info("httpPost() failed:", err)
		return err
	}

	test := strings.TrimSpace(string(body))
	// log.Info("virtigo returned body:", test)
	for _, line := range strings.Split(test, "\n") {
		log.Info("GOT:", line)
	}
	return nil
}