package main

import (
	"flag"
	"fmt"
	"git.burkey.co/eburk/epochcli/pkg/epoch"
	"log"
	"os"
	"os/exec"
	"strings"
)

func main() {
	outOfDate, err := needUpdate()
	if err != nil {
		log.Fatal(err)
	}

	if outOfDate {
		fmt.Println("There is a new version of epochcli, you must update before running")
		os.Exit(1)
	}

	var (
		helpFlag       bool
		updateOnlyFlag bool
		forceFlag      bool
		rerunConfig    bool
	)
	flag.BoolVar(&helpFlag, "h", false, "Print help")
	flag.BoolVar(&forceFlag, "f", false, "Forces epochcli to update files even if they match the current version")
	flag.BoolVar(&updateOnlyFlag, "u", false, "Ignore EnableLauncher setting in config and only runs an update. Does nothing if EnableLauncher is false")
	flag.BoolVar(&rerunConfig, "c", false, "Runs config configuration step. Overrides the config file")
	flag.Parse()

	if helpFlag {
		flag.CommandLine.SetOutput(os.Stdout)
		fmt.Println("Epochcli Help:")
		flag.PrintDefaults()
		os.Exit(0)
	}

	config, err := setupConfig(rerunConfig)
	if err != nil {
		log.Fatal(err)
	}

	if config.WowDir == defaultWowPath {
		log.Fatalf("WowDir in %s is still the default setting, exiting", cfgPath)
	}

	stats, err := epoch.DownloadUpdate(config.WowDir, forceFlag, config.RemoveUnknownPatches)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Printf("%d files updated\n\n", stats.Updated)
	if stats.Current > 0 {
		fmt.Printf("%d files are already up to date\n\n", stats.Current)
	}

	if configRun {
		fmt.Println("Configuration complete!")
		os.Exit(0)
	}

	if updateOnlyFlag {
		os.Exit(0)
	}

	if config.EnableLauncher {
		if config.LaunchCmd == defaultLaunchCmd {
			log.Fatalf("LaunchCmd in %s is still the default setting, exiting\n", cfgPath)
		}

		fmt.Println("Starting Epoch...")
		var cmd = strings.Split(config.LaunchCmd, " ")
		ex := exec.Command(cmd[0], cmd[1:]...)
		cmdStr := strings.Join(cmd, " ")
		if config.WinePrefix != "" {
			prefix := fmt.Sprintf("WINEPREFIX=%s", config.WinePrefix)
			newEnv := append(os.Environ(), prefix)
			ex.Env = newEnv
			cmdStr = prefix + " " + cmdStr
		}
		fmt.Println("Running command:", cmdStr)
		err = ex.Run()
		if err != nil {
			log.Fatal(err)
		}
	}
}