// ==UserScript==
// @name         動畫瘋工具箱
// @namespace    https://blog.maple3142.net/
// @version      0.4
// @description  取得動畫的 m3u8 網址，下載彈幕為 json，去除擋廣告的警告訊息
// @author       maple3142
// @match        https://ani.gamer.com.tw/animeVideo.php?sn=*
// @require      https://cdn.jsdelivr.net/npm/m3u8-parser@4.2.0/dist/m3u8-parser.min.js
// @grant        none
// @downloadURL none
// ==/UserScript==

; (function ($) {
	'use strict'
	//in order to get videojs instance
	requirejs.config({
		baseUrl: '//i2.bahamut.com.tw',
		waitSeconds: 0,
		paths: {
			order: 'js/order'
		},
		shim: {
			viblast: {},
			vastvpaid: {
				deps: ['videojs']
			}
		}
	})
	requirejs(['order!videojs'], videojs => hookSetter(videojs.players, 'ani_video', function onAniVideo(vid) {
		window.ani_video = vid //EXPOSE
		hookSetter(vid.K, 'src', onPlaylistUrl)
	}))
	function hookSetter(obj, prop, cb) {
		Object.defineProperty(obj, prop, {
			set: cb
		})
	}
	function render(pls) {
		const html = pls
			.map(
				pl =>
					`<div><label for="${pl.res.height}p">${pl.res.height}P: </label><input id="${
					pl.res.height
					}p" value="${pl.url}" style="width: 500px;"></div>`
			)
			.join('')
		$('.anime_name').append(`<div id="anigamer_m3u8_warpper">${html}</div>`)
	}
	function cvtM3U8_to_playlist(baseurl) {
		return m3u8 => {
			const parser = new m3u8Parser.Parser()
			parser.push(m3u8)
			parser.end()
			const pls = parser.manifest.playlists.map(pl => ({
				url: 'https:' + baseurl + pl.uri,
				res: pl.attributes.RESOLUTION
			}))
			return pls
		}
	}
	function onPlaylistUrl(playlisturl) {
		if (playlisturl.indexOf('gamer_ad') !== -1) {
			//is ad
			return
		}
		const baseurl = playlisturl.replace(/index\.m3u8.*/, '')
		fetch(playlisturl)
			.then(r => r.text())
			.then(cvtM3U8_to_playlist(baseurl))
			.then(pls => window.M3U8_PLAYLIST = pls) //EXPOSE
			.then(render)
	}

	function triggerDownload(url, fname) {
		const a = document.createElement('a')
		a.href = url
		a.download = fname
		document.body.appendChild(a)
		a.click()
		a.remove()
	}
	function saveTextAsFile(text, fname) {
		const blob = new Blob([text])
		const url = URL.createObjectURL(blob)
		triggerDownload(url, fname)
		URL.revokeObjectURL(url)
	}
	//extra: add a button to download danmu as json file
	hookSetter(animefun, 'danmu', danmu => {
		const text = JSON.stringify(danmu)
		const title = $('.anime_name h1').text()
		$('.anime_name').append($('<a href="javascript:void(0)">把彈幕存成檔案</a>').on('click', () => {
			saveTextAsFile(text, `${title}_彈幕.json`)
		}))
	})



	//extra: block anti adblock alert
	const orig_alert = alert
	alert = function (t) {
		if (t.includes('由於擋廣告插件會影響播放器運作')) return
		orig_alert(t)
	}
})(jQuery)