package main

import (
	"intimate"
	"log"
	"time"

	"github.com/tebeka/selenium"
)

// // sstore  源存储实例, 为存储源数据的实现. 表格具体参考sql/intimate_source.sql
// var sstore *intimate.StoreSource = intimate.NewStoreSource(string(intimate.STTwitch))

// // estore 解析存储连接实例
// var estore *intimate.StoreExtractor = intimate.NewStoreExtractor()

// 获取类型的所有频道链接

// Execute 执行任务
func Execute() {

	ps := intimate.NewPerfectShutdown()
	var adriver *intimate.AutoCloseDriver

	for !ps.IsClose() {

		var err error
		adriver = intimate.GetChromeDriver()
		wd := adriver.Webdriver

		weburl := "https://www.twitch.tv/directory?sort=VIEWER_COUNT"
		err = wd.Get(weburl)
		if err != nil {
			panic(err)
		}

		cardCondition := func(wd selenium.WebDriver) (bool, error) {
			elements, err := wd.FindElements(selenium.ByXPATH, "//span/a[contains(@data-a-target,'card-') and @href]")
			if err != nil {
				return false, err
			}
			return len(elements) > 0, nil
		}
		wd.WaitWithTimeout(cardCondition, time.Second*15)
		time.Sleep(time.Second)

		e, err := wd.FindElement(selenium.ByXPATH, "//button[@data-a-target='browse-sort-menu']")
		if err != nil {
			panic(err)
		}
		e.Click()

		var lasthreflen = 0
		var hrefs map[string]bool = make(map[string]bool)
		var delayerror = 5
		for i := 0; i <= 200; i++ {
			cards, err := wd.FindElements(selenium.ByXPATH, "//span/a[contains(@data-a-target,'card-') and @href]")
			if err != nil {
				log.Println(err)
				break
			}

			if len(hrefs) == lasthreflen {
				delayerror--
				if delayerror <= 0 {
					break
				}
			} else {
				delayerror = 7
			}
			lasthreflen = len(hrefs)

			for ii := 0; ii < 10; ii++ {
				for _, card := range cards {
					href, err := card.GetAttribute("href")
					if err != nil {
						log.Println(href, err)
						continue
					} else {
						hrefs[href] = true
					}
				}
				break
			}

			if ps.IsClose() {
				break
			}

			if len(cards) > 10 {
				log.Println(len(cards))
				wd.ExecuteScript(`items = document.evaluate("//div[@data-target='directory-page__card-container']/../self::div[@data-target and @style]", document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null); 
		for (var i = 0; i < items.snapshotLength - 10; i++) { item = items.snapshotItem(i); item.remove() ;};`, nil)
			}
			time.Sleep(time.Millisecond * 200)
			wd.KeyDown(selenium.EndKey)
			time.Sleep(time.Millisecond * 200)
			wd.KeyUp(selenium.EndKey)
			time.Sleep(time.Millisecond * 2500)
		}

		for href := range hrefs {

			sl := &intimate.StreamerList{}
			sl.Url = href
			sl.UrlHash = intimate.GetUrlHash(sl.Url)
			sl.Platform = string(intimate.Ptwitch)
			sl.UpdateTime = intimate.GetUpdateTimeNow()
			err := intimate.TStreamerList.Insert(sl)
			if err != nil {
				log.Println(err)
			}
		}

		log.Println("hrefs len:", len(hrefs))
		adriver.Close()
		ps.Wait(time.Minute * 5)
	}

}