package main

import (
	"flag"
	"fmt"
	"log"
	"os"
	"time"
)

var (
	appFlag         = flag.String("app", "", "run specific app")
	cfgFile         = flag.String("config", "config.json", "config file")
	schedFlag       = flag.String("schedule", "", "specific schedule")
	slowFlag        = flag.Bool("slow", false, "slow process")
	testFlag        = flag.Bool("test", false, "test run")
	debugFlag       = flag.Bool("debug", false, "debug")
	testMailFlag    = flag.Bool("test-mail", false, "test email setup")
	stopOnErrorFlag = flag.Bool("stop-on-error", false, "stop processing on error")
	cfg             Config
	email           *Email
)

func main() {
	flag.Parse()

	fmt.Printf("backup (%s)\n", version)

	email = new(Email)
	email.startTime = time.Now()
	email.items = make([]string, 0)

	err := cfg.Load()
	if err != nil {
		log.Printf("Cannot load config (%s)", err)
		os.Exit(1)
	}

	if *testMailFlag {
		SendMail(cfg.Email.SmtpHost, cfg.Email.FromEmail, "test backup email topic", "test backup email body", cfg.Email.ToEmail)
		os.Exit(0)
	}

	err = RunBackup(*appFlag, *stopOnErrorFlag)
	if err != nil {
		log.Printf("Cannot run schedule (%s)", err)
		os.Exit(1)
	}

	if len(email.items) > 0 {
		body := " - " + email.items[0]
		for _, v := range email.items[1:] {
			body = body + "\r\n" + " - " + v
		}
		SendMail(cfg.Email.SmtpHost, cfg.Email.FromEmail, "Autobackup report", body, cfg.Email.ToEmail)
		log.Printf("Sending summary email\r\n%v", email.items)
	}
}

//RunBackup run all backup targets where schedule is registered
func RunBackup(app string, stopOnError bool) error {
	if app == "" {
		if *debugFlag {
			log.Printf("RunBackup() : Start")
		}
		for _, a := range cfg.Apps {
			err := a.RunAppBackup()
			if err != nil {
				if *debugFlag {
					log.Printf("RunBackup() : Error running %s", a.Name)
				}
				if stopOnError {
					return err
				}
			}
		}
	} else {
		if *debugFlag {
			log.Printf("RunBackup() : Start %s", app)
		}
		for _, a := range cfg.Apps {
			if a.Name == app {
				err := a.RunAppBackup()
				if err != nil {
					if *debugFlag {
						log.Printf("RunBackup() : Error running %s", a.Name)
					}
					return err
				}
			}
		}
	}

	return nil
}