package main

import (
	"flag"
	"fmt"
	"log"

	"./pixiv"
)

type cmdlineT struct {
	followings    bool
	favs          bool
	illusts       bool
	userID        string
	setCookies    string
	setProxy      string
	workDirectory string
	userAgent     string
	printID       bool
	printURL      bool
	test          bool
	logErrorsFile string
	threads       int
	setXAttrTags  bool
	setTagsFile   string
}

var (
	cmdline cmdlineT
	cookies string
	pix     pixiv.Pixiv
)

func main() {
	flags()
	pix = pixiv.New(cmdline.setCookies, cmdline.logErrorsFile, cmdline.threads, cmdline.setXAttrTags)
	defer pix.Close()
	if len(cmdline.setProxy) > 0 {
		pix.SetProxy(cmdline.setProxy)
	}
	if len(cmdline.workDirectory) > 0 {
		pix.WorkDirectory = cmdline.workDirectory
	}

	if cmdline.illusts {
		err := fetchIllusts(cmdline.userID)
		if err != nil {
			log.Fatal(err.Error())
		}
	}

	if cmdline.favs {
		err := fetchBookmarks(cmdline.userID)
		if err != nil {
			log.Fatal(err.Error())
		}
	}

	if cmdline.followings {
		err := fetchFollows(cmdline.userID)
		if err != nil {
			log.Fatal(err.Error())
		}
	}

}

func fetchFollows(userID string) (err error) {
	users, err := pix.GetFollows(userID)
	if err != nil {
		return
	}
	for _, user := range users {
		fmt.Printf("%s %s %s %s\n", user.UserID, "followed_user", "defered", user.UserName)
	}
	return
}

func fetchBookmarks(userID string) (err error) {
	illusts, err := pix.GetBookmarks(userID)
	if err != nil {
		return
	}
	for _, illust := range illusts {
		if cmdline.printID {
			fmt.Printf("%s %s %s %s %s\n", illust.ID, "illust", "defered", illust.Title, illust.Alt)
			continue
		}
		if !illust.Complited() {
			err := pix.ComplateIllust(&illust)
			if err != nil {
				return err
			}
		}
		if cmdline.printURL {
			for _, page := range illust.Pages {
				fmt.Println(page.URLs.Original)
			}
			continue
		}
		if !(cmdline.printURL && cmdline.printID) {
			if !(cmdline.printURL && cmdline.printID) {
				for _, illust := range illusts {
					pix.DownloadChannel <- illust
				}
			}
		}

	}
	return
}

func fetchIllusts(userID string) (err error) {
	illusts, err := pix.GetUserIllustsID(userID)
	if err != nil {
		return
	}
	if cmdline.printID {
		for _, illust := range illusts {
			fmt.Println(illust.ID)
		}
		return
	}
	if cmdline.printURL {
		for _, illust := range illusts {
			id := illust.ID
			illust, err := pix.GetIllust(id)
			if err != nil {
				return err
			}
			for _, page := range illust.Pages {
				fmt.Println(page.URLs.Original)
			}
		}
		return
	}
	if !(cmdline.printURL && cmdline.printID) {
		for _, illust := range illusts {
			pix.DownloadChannel <- illust
		}
	}
	return
}

func flags() {
	flag.BoolVar(&cmdline.illusts, "illusts", false, "download illusts")
	flag.BoolVar(&cmdline.followings, "followings", false, "fetch user followings")
	flag.BoolVar(&cmdline.favs, "favs", false, "fetch user favorites")
	flag.StringVar(&cmdline.userID, "user-id", "", "set userID to extract followings, favs or illustrations from")
	flag.StringVar(&cmdline.setCookies, "set-cookies", "", "set cookies for request. PHPSESSID is REQUIRED if you want to see R-18 works. SHOULD be something like PHPSESSID=12345678_MEPujYEEwOfXKYdB9TXeMIxaq7pQPYXA")
	flag.StringVar(&cmdline.setProxy, "set-proxy", "", "set proxy for request")
	flag.StringVar(&cmdline.workDirectory, "workdir", "", "set directory to save images in")
	flag.StringVar(&cmdline.userAgent, "user-agent", "Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0", "set user agent")
	flag.BoolVar(&cmdline.printID, "print-id", false, "only print IDs, not download")
	flag.BoolVar(&cmdline.printURL, "print-url", false, "only print URLs, not download")
	flag.BoolVar(&cmdline.test, "test", false, "test")
	flag.StringVar(&cmdline.logErrorsFile, "log-errors", "", "file to strore failed items")
	flag.IntVar(&cmdline.threads, "threads", 1, "threads number")
	flag.StringVar(&cmdline.setTagsFile, "set-xattr-file", "", "[WIP] fetch illustration's tags and write them to xattrs of the specified file. Filename SHOULD be in following formats: <illust_id>_p<page_number>.<file_ext>, illust_<illust_id>_*")
	flag.BoolVar(&cmdline.setXAttrTags, "set-xattr", false, "also write tags to xattrs")
	flag.Parse()
}