package main

import (
	"concord.hectabit.org/Hectabit/burgerbackup/lib/client"
	"github.com/spf13/viper"
	"log"
	"os"
	"strconv"
	"time"
)

func main() {
	var configPath = "./config.ini"
	if len(os.Args) > 1 {
		if os.Args[1] == "-h" || os.Args[1] == "--help" {
			log.Println("[INFO] Usage: burgerbackup-client </path/to/config/file>")
			os.Exit(0)
		} else {
			configPath = os.Args[1]
		}
	}

	if _, err := os.Stat(configPath); err == nil {
		log.Println("[INFO] Config loaded at", time.Now().Unix())
	} else if os.IsNotExist(err) {
		originalConfigPath := configPath
		configPath = "/etc/burgerbackup/client.ini"
		if _, err := os.Stat(configPath); err == nil {
			log.Println("[INFO] Config loaded at", time.Now().Unix())
			log.Println("[WARN] The config file was not found at", originalConfigPath, "so the default config path of", configPath, "was used.")
		} else if os.IsNotExist(err) {
			log.Fatalln("[FATAL]", originalConfigPath, "does not exist")
		} else {
			log.Fatalln("[FATAL] File is in quantum uncertainty:", err)
		}
	} else {
		log.Fatalln("[FATAL] File is in quantum uncertainty:", err)
	}

	viper.SetConfigName(configPath)
	viper.AddConfigPath("./")
	viper.AutomaticEnv()

	err := viper.ReadInConfig()
	if err != nil {
		log.Fatalln("[FATAL] Error in config file at", strconv.FormatInt(time.Now().Unix(), 10)+":", err)
	}

	backupKey := viper.GetString("BACKUP_KEY")
	cryptoKey := viper.GetString("CRYPTO_KEY")
	backupInterval := viper.GetInt("BACKUP_INTERVAL")
	fileLocation := viper.GetString("FILE_LOCATION")
	remoteURL := viper.GetString("REMOTE_URL")

	for {
		err, errCode := client.PerformBackup(fileLocation, backupKey, cryptoKey, remoteURL)
		if err != nil {
			if errCode == 0 {
				log.Println("[CRITICAL] Unknown in performBackup() file read:", err)
			} else if errCode == 1 {
				log.Println("[CRITICAL] Unknown in performBackup() content encryption:", err)
			} else if errCode == 2 {
				log.Println("[CRITICAL] Unknown in SendFileToServer() request creation:", err)
			} else if errCode == 3 {
				log.Println("[CRITICAL] Unknown in SendFileToServer() hash creation:", err)
			} else if errCode == 4 {
				log.Println("[CRITICAL] Unknown in SendFileToServer() request execution:", err)
			} else if errCode == 5 {
				log.Println("[CRITICAL] Unknown in SendFileToServer() response read:", err)
			} else if errCode == 6 {
				log.Println("[CRITICAL] Unknown in SendFileToServer() response marshalling:", err)
			} else if errCode == 7 {
				log.Println("[CRITICAL] Server sent message in SendFileToServer():", err)
			} else {
				log.Println("[CRITICAL] Unknown error in main():", err)
			}
		}
		time.Sleep(time.Duration(backupInterval) * 1000000000)
	}
}