package main

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

	"git.0cd.xyz/michael/gomail/mail"
)

func main() {
	cfgFile, mailbox, list := ui()
	cfg := NewConfig(*cfgFile)
	ch := make(chan error)
	for _, account := range cfg.Account {
		go getmail(account, cfg.Path, *mailbox, *list, ch)
	}
	for c := 0; c < len(cfg.Account); c++ {
		if <-ch != nil {
			log.Println(<-ch)
		}
	}
}

func getmail(account Account, ph, mailbox string, list bool, ch chan error) {
	conn, err := mail.Login(mail.Conn{Addr: account.Addr, Username: account.Username, Password: account.Password})
	if err != nil {
		ch <- err
		return
	}
	defer conn.Client.Logout()
	if !list {
		path := ph + account.Username + "/" + time.Now().Format("2006-01-02-15:04:05")
		makePath(ph+account.Username, path)
		if err = conn.GetMessages(mailbox, path); err != nil {
			ch <- err
		}
		ch <- nil
		return
	}
	conn.ListMailboxes()
	ch <- nil
}

func ui() (cfgFile, mailbox *string, list *bool) {
	flag.Usage = func() {
		fmt.Printf("Usage of %s:\n", os.Args[0])
		flag.PrintDefaults()
	}
	home, err := os.UserHomeDir()
	if err != nil {
		log.Fatal(err)
	}
	cfgFile = flag.String("cfgFile", home+"/.config/gomail/config.yaml", "path to config file")
	mailbox = flag.String("mailbox", "inbox", "mailbox to scan messages")
	list = flag.Bool("list", false, "list all mailboxes")

	flag.Parse()
	return cfgFile, mailbox, list
}

func makePath(paths ...string) {
	for _, p := range paths {
		if _, err := os.Stat(p); os.IsNotExist(err) {
			os.Mkdir(p, 0775)
		}
	}
}