package main

import (
	"net/url"

	"github.com/iawia002/annie/config"
	"github.com/iawia002/annie/downloader"
	"github.com/iawia002/annie/extractors/bcy"
	"github.com/iawia002/annie/extractors/bilibili"
	"github.com/iawia002/annie/extractors/douyin"
	"github.com/iawia002/annie/extractors/douyu"
	"github.com/iawia002/annie/extractors/facebook"
	"github.com/iawia002/annie/extractors/geekbang"
	"github.com/iawia002/annie/extractors/instagram"
	"github.com/iawia002/annie/extractors/iqiyi"
	"github.com/iawia002/annie/extractors/mgtv"
	"github.com/iawia002/annie/extractors/miaopai"
	"github.com/iawia002/annie/extractors/netease"
	"github.com/iawia002/annie/extractors/pixivision"
	"github.com/iawia002/annie/extractors/pornhub"
	"github.com/iawia002/annie/extractors/qq"
	"github.com/iawia002/annie/extractors/tangdou"
	"github.com/iawia002/annie/extractors/tiktok"
	"github.com/iawia002/annie/extractors/tumblr"
	"github.com/iawia002/annie/extractors/twitter"
	"github.com/iawia002/annie/extractors/udn"
	"github.com/iawia002/annie/extractors/universal"
	"github.com/iawia002/annie/extractors/vimeo"
	"github.com/iawia002/annie/extractors/weibo"
	"github.com/iawia002/annie/extractors/xvideos"
	"github.com/iawia002/annie/extractors/yinyuetai"
	"github.com/iawia002/annie/extractors/youku"
	"github.com/iawia002/annie/extractors/youtube"
	"github.com/iawia002/annie/utils"
)

// The following code is slightly modified from
//
//   https://github.com/iawia002/annie/blob/master/main.go

func download(videoURL string) bool {
	var (
		domain string
		err    error
		data   []downloader.Data
	)
	bilibiliShortLink := utils.MatchOneOf(videoURL, `^(av|ep)\d+`)
	if bilibiliShortLink != nil && len(bilibiliShortLink) > 1 {
		bilibiliURL := map[string]string{
			"av": "https://www.bilibili.com/video/",
			"ep": "https://www.bilibili.com/bangumi/play/",
		}
		domain = "bilibili"
		videoURL = bilibiliURL[bilibiliShortLink[1]] + videoURL
	} else {
		u, err := url.ParseRequestURI(videoURL)
		if err != nil {
			printError(videoURL, err)
			return false
		}
		domain = utils.Domain(u.Host)
	}
	switch domain {
	case "douyin", "iesdouyin":
		data, err = douyin.Extract(videoURL)
	case "bilibili":
		data, err = bilibili.Extract(videoURL)
	case "bcy":
		data, err = bcy.Extract(videoURL)
	case "pixivision":
		data, err = pixivision.Extract(videoURL)
	case "youku":
		data, err = youku.Extract(videoURL)
	case "youtube", "youtu": // youtu.be
		data, err = youtube.Extract(videoURL)
	case "iqiyi":
		data, err = iqiyi.Extract(videoURL)
	case "mgtv":
		data, err = mgtv.Extract(videoURL)
	case "tangdou":
		data, err = tangdou.Extract(videoURL)
	case "tumblr":
		data, err = tumblr.Extract(videoURL)
	case "vimeo":
		data, err = vimeo.Extract(videoURL)
	case "facebook":
		data, err = facebook.Extract(videoURL)
	case "douyu":
		data, err = douyu.Extract(videoURL)
	case "miaopai":
		data, err = miaopai.Extract(videoURL)
	case "163":
		data, err = netease.Extract(videoURL)
	case "weibo":
		data, err = weibo.Extract(videoURL)
	case "instagram":
		data, err = instagram.Extract(videoURL)
	case "twitter":
		data, err = twitter.Extract(videoURL)
	case "qq":
		data, err = qq.Extract(videoURL)
	case "yinyuetai":
		data, err = yinyuetai.Extract(videoURL)
	case "geekbang":
		data, err = geekbang.Extract(videoURL)
	case "pornhub":
		data, err = pornhub.Extract(videoURL)
	case "xvideos":
		data, err = xvideos.Extract(videoURL)
	case "udn":
		data, err = udn.Extract(videoURL)
	case "tiktok":
		data, err = tiktok.Extract(videoURL)
	default:
		data, err = universal.Extract(videoURL)
	}
	if err != nil {
		// if this error occurs, it means that an error occurred before actually starting to extract data
		// (there is an error in the preparation step), and the data list is empty.
		printError(videoURL, err)
		return false
	}
	var isErr bool
	for _, item := range data {
		if item.Err != nil {
			// if this error occurs, the preparation step is normal, but the data extraction is wrong.
			// the data is an empty struct.
			printError(item.URL, item.Err)
			isErr = true
			continue
		}
		err = downloader.Download(item, videoURL, config.ChunkSizeMB)
		if err != nil {
			printError(item.URL, err)
			isErr = true
		}
	}
	return !isErr
}