// ==UserScript==
// @name			Fuck Chaoxing
// @namespace		xuyiming.open@outlook.com
// @description		解除超星自动暂停播放的限制并添加自动播放下一集的功能
// @author			依然独特
// @version			1.0.4
// @grant			none
// @run-at			document-start
// @require			https://greasyfork.org/scripts/18715-hooks/code/Hooks.js?version=126794
// @include			*://*.chaoxing.com/knowledge/cards*
// @include			*://*.chaoxing.com/ananas/modules/video/index.html*
// @include			*://*.chaoxing.com/ananas/modules/work/index.html
// @include			*://*.chaoxing.com/ananas/modules/work/index.html*
// @match			*://*.chaoxing.com/knowledge/cards*
// @match			*://*.chaoxing.com/ananas/modules/video/index.html*
// @match			*://*.chaoxing.com/ananas/modules/work/index.html
// @match			*://*.chaoxing.com/ananas/modules/work/index.html*
// @license			BSD 2-Clause
// @homepageURL		https://gist.github.com/xymopen/eb65046644ff5cb7c0668e5d4f9607d1
// @downloadURL none
// ==/UserScript==

( function() {
	"use strict";

	function hookJQuery( onPlayerInit, contextWindow ) {
		contextWindow = contextWindow || window;

		// CXPlayer extends jQuery for its own APIs
		// so hook jQuery to modify these APIs.
		Hooks.set( contextWindow, "jQuery", function( target, propertyName, ignored, jQuery ) {
			Hooks.set( jQuery.fn, "cxplayer", function( target, propertyName, oldValue, newValue ) {
				return Hooks.apply( newValue, function( target, thisArg, argv ) {
					var config = argv[ 0 ], $player;

					config.datas.isAutoPlayNext = true;
					config.datas.isDefaultPlay = true;

					$player = Hooks.Reply.apply( arguments );

					if ( config.events &&
						config.events.onAnswerRight &&
						!config.events.onAnswerRight.toString()
							.replace( /(function .*?\(.*?\))/g, "" ).trim()		// remove function signifigure
							.replace( /^\{|\}$/g, "" )
							.replace( /\/\/.*(\r|\n|(\r\n))/g,"" )				// remove single line comment
							.replace( /\/\*.*\*\//mg,"" )						// remove multiple line comment
							.match( /^\s*$/ )
					) {
						contextWindow.alert( "onAnswerRight() is not empty. It's unsafe to block the resource URL." );
					}

					$player.bind( "onPause", function() {
						$player.playMovie();
					} );

					onPlayerInit( $player, config );

					return $player;
				} );
			} );

			Hooks.set( jQuery.fn, "pauseMovie", function( target, methodName, oldValue, newValue ) {
				return Hooks.apply( newValue, function ( target, thisArg, argv ) {
					/* empty */
				} );
			} );

			return Hooks.Reply.set( arguments );
		} );
	};

	function next( contextDocument ) {
		var selections, nextSelectionIndex;

		contextDocument = contextDocument || document;

		selections = contextDocument.querySelectorAll( "#mainid .tabtags span" );
		nextSelectionIndex = findCurIndex( selections ) + 1;

		function findCurIndex( nodeList ) {
			return Array.from( nodeList ).findIndex( function( chapter ) {
				return chapter.classList.contains( "currents" );
			} );
		};

		if ( nextSelectionIndex < selections.length ) {
			selections[ nextSelectionIndex ].click();
		} else {
			( function clickNextChapter() {
				var chapters = contextDocument.querySelectorAll(
						"#coursetree .ncells h1," +
						"#coursetree .ncells h2," +
						"#coursetree .ncells h3," +
						"#coursetree .ncells h4," +
						"#coursetree .ncells h5," +
						"#coursetree .ncells h6"
					),
					nextChapterIndex = findCurIndex( chapters ) + 1,
					nextChapter = chapters[ nextChapterIndex ];

				if ( nextChapterIndex < chapters.length ) {
					// Wait some time for the next chapter to unlock
					if ( nextChapter.querySelector( ".lock" ) ) {
						setTimeout( clickNextChapter, 1e3 );
					} else {
						nextChapter.click();
					}
				}
			} )();
		}
	};

	function tryNext( contextDocument ) {
		// Check if we have finished current selection
		if ( window.parent.document.querySelector( ".ans-job-finished" ) ) {
			// Automatically switch to next chapter
			next( window.top.document );
		}
	};

	if ( ( /\/ananas\/modules\/video\/index.html/ ).test( window.location.pathname ) ) {
		hookJQuery( function( $player, config ) {
			$player.bind( "onInitComplete", tryNext );

			// Automatically switch to next selection
			$player.bind( "onEnd", function( event, index, config ) {
				// Only execute once
				var executed = false;

				// Wait for the player to log your trace by triggering logFunc event
				window.jQuery( document ).ajaxComplete( function() {
					if ( !executed ) {
						executed = true;
						tryNext();
					}
				} );
			} );
		} );
	} else if ( ( /\/ananas\/modules\/work\/index.html/ ).test( window.location.pathname ) ) {
		document.addEventListener( "DOMContentLoaded", function() {
			document.querySelector( "#frame_content" ).addEventListener( "load", tryNext, false );
		}, false );
	} else if ( ( /\/knowledge\/cards/ ).test( window.location.pathname ) ) {
		// parent frame of /ananas/modules/video/index.html or /ananas/modules/work/index.html
		// there are some pages where there is no such content frame
		document.addEventListener( "DOMContentLoaded", function() {
			if ( !document.querySelector( "iframe" ) ) {
				next( window.top.document );
			}
		}, false );
	}
} )();