const AnswerControlMixin = {
	props: {},
	data() {
		return {
			answer_comparison: {
				answer_list: []
			},
			// answer_control: {},
		};
	},
	methods: {
		/**
		 * 显示答案
		 * @param {Boolean} isJudgeAnswer 是否判断对错
		 * @param {Boolean} isViewRightAnswer 是否显示正确答案
		 * @param {Boolean} isReadOnly 是否只读
		 */
		showAnswer(isJudgeAnswer, isViewRightAnswer, isReadOnly, question_id, answer_comparison, is_objective) {
			this.answer_control[question_id] = {
				isJudgeAnswer: isJudgeAnswer,
				isViewRightAnswer: isViewRightAnswer,
				isReadOnly: isReadOnly,
				is_objective: is_objective
			};
			this.question_id = question_id;
			if (answer_comparison) this.answer_comparison = answer_comparison;
			this.$forceUpdate();
		},

		//初始化控制
		commonComputedAnswerControl(question_id) {
			var cur = this.answer_control[question_id];
			if (!cur) {
				this.answer_control[question_id] = {
					isJudgeAnswer: false, //是否判断答案
					isViewRightAnswer: false, //是否显示标准答案
					isReadOnly: false, //是否只读
					is_objective: true, //是否客观题
				};
				cur = this.answer_control[question_id];
			}
			return cur;
		},

		//初始化整个答题控制
		initAnswerControl() {
			for (const key in this.answer_control) {
				this.answer_control[key] = {
					isJudgeAnswer: false,
					isViewRightAnswer: false,
					isReadOnly: false,
					is_objective: true,
				};
			}
		},

		/**
		 * 题目序号以括号结尾，如果不是则加上 '.'
		 * @param {题目序号} question_number 
		 * @returns {题目序号} 
		 */
		questionNumberEndIsBracket(question_number) {
			return question_number ? (
				`${question_number}${/[()（）]/.test(question_number) ? '' :(/[一二三四五六七八九十]+/.test(question_number) ? '、' :'.')}`
				) : '';
		},

		/**
		 * 预览图片
		 * @param {图片地址} url
		 */
		preview(url) {
			uni.previewImage({
				current: url,
				urls: [url],
			});
		},
		/**
		 * 预览富文本里面的图片(连线题，朗读题等调用这个)
		 * @param {索引,定位富文本元素} i,j
		 */
		previewByRichTextImg(i, j, question_id) {
			var _richText = 'richText' + i + j + question_id;
			if ('sort' === i && 'sort' === j) {
				_richText = question_id; //排序题特殊处理（这里question_id实际为mark）
			};
			let html = '';
			if (i < 0 && j < 0) {
				html = this.$refs[_richText].$el.innerHTML;
			} else {
				html = this.$refs[_richText][0].$el.innerHTML;
			}
			const srcReg = /<img.*?src=["']?(.*?)["'\s]/g;
			const results = [...html.matchAll(srcReg)];
			if (!results) return;
			const srcList = results.map(result => result[1]);
			if (!srcList) return;
			if (srcList.length > 1) {
				uni.previewImage({
					current: 0,
					urls: srcList,
				});
			} else {
				this.preview(srcList[0]);
			}
		},

	},
};

export default AnswerControlMixin;