eep_page/src/views/book/courseware/preview/components/common/PreviewMixin.js

import SerialNumberPosition from './SerialNumberPosition.vue';
import PinyinText from '@/components/PinyinText.vue';
import AnswerAnalysis from '@/views/book/courseware/preview/common/AnswerAnalysis.vue';
import PreviewOperation from '@/views/book/courseware/preview/common/PreviewOperation.vue';

import { isEnable } from '@/views/book/courseware/data/common';
import { ContentGetCoursewareComponentContent } from '@/api/book';
import { sanitizeHTML } from '@/utils/common';

const mixin = {
  data() {
    return {
      sanitizeHTML,
      typeList: ['interaction'],
      answer: { answer_list: [], is_right: false }, // 用户答案
      isJudgingRightWrong: false, // 是否判断对错
      isShowRightAnswer: false, // 是否显示正确答案
      disabled: false, // 是否禁用
      isShowParse: false, // 是否显示解析
      isEnable,
      loader: false,
      visibleAnswerAnalysis: false, // 是否显示答案解析弹窗
      answerAnalysisState: null, // 答案解析弹窗前的状态快照
    };
  },
  inject: ['getLang', 'getChinese', 'convertText', 'getTitleList', 'getPermissionControl'],
  props: {
    id: {
      type: String,
      default: '',
    },
    content: {
      type: String,
      default: '',
    },
    coursewareId: {
      type: String,
      default: '',
    },
    type: {
      type: String,
      default: '',
    },
    isMobile: {
      type: Boolean,
      default: false,
    },
  },
  computed: {
    showLang() {
      return this.getLang() !== 'ZH';
    },
    permissionControl() {
      return this.getPermissionControl();
    },
  },
  watch: {
    content: {
      handler(newVal) {
        if (this.type === 'edit') return;
        if (!newVal) return;
        this.data = JSON.parse(newVal);
      },
      immediate: true,
    },
  },
  components: {
    SerialNumberPosition,
    PinyinText,
    AnswerAnalysis,
    PreviewOperation,
  },
  created() {
    // 这里分为 预览 和 编辑调整位置、视频互动组件 三种情况
    // 预览时，content 直接传入
    // 编辑调整位置时，content 需要通过接口获取
    if (this.type === 'edit') {
      this.getCoursewareComponentContent();
    }
  },
  methods: {
    getCoursewareComponentContent() {
      ContentGetCoursewareComponentContent({ courseware_id: this.coursewareId, component_id: this.id }).then(
        ({ content }) => {
          if (content) {
            let oldData = JSON.parse(content);
            if (oldData.type === 'audio') {
              let p = oldData.property || {};
              if (!p.file_name_display_mode) p.file_name_display_mode = 'true';
              if (p.view_method === 'independent' && !p.style_mode) {
                p.style_mode = 'middle';
              }
              if (!p.style_mode) p.style_mode = 'big';
              if (p.view_method === 'icon') {
                p.file_name_display_mode = 'false';
                p.view_method = 'independent';
                p.style_mode = 'small';
              }
            }
            this.data = oldData;
          }
          this.loader = true;
        },
      );
    },

    /**
     * 获取用户答案
     * @returns {array} 用户答案
     */
    getAnswer() {
      return this.answer;
    },
    /**
     * 显示答案
     * @param {boolean} isJudgingRightWrong 是否判断对错
     * @param {boolean} isShowRightAnswer 是否显示正确答案
     * @param {object} userAnswer 用户答案
     * @param {boolean} disabled 是否禁用
     */
    showAnswer(isJudgingRightWrong, isShowRightAnswer, userAnswer, disabled) {
      // if (this.loader === false) {
      //   return setTimeout(() => this.showAnswer(isJudgingRightWrong, isShowRightAnswer, userAnswer, disabled), 100);
      // }

      this.isJudgingRightWrong = isJudgingRightWrong;
      this.isShowRightAnswer = isShowRightAnswer;
      this.disabled = disabled;
      if (userAnswer) this.answer = userAnswer;
    },
    /**
     * 得到序号外部样式
     */
    getAreaStyle() {
      if (!isEnable(this.data.property.sn_display_mode)) {
        return {
          grid: `"main" / 1fr`,
        };
      }
      const position = this.data.property.sn_position;
      let grid = '';

      if (position.includes('right')) {
        grid = `"main position" / 1fr auto`;
      } else if (position.includes('left')) {
        grid = `"position main" / auto 1fr`;
      } else if (position.includes('top')) {
        grid = `"position" auto "main" 1fr`;
      } else if (position.includes('bottom')) {
        grid = `"main" 1fr "position" auto`;
      }

      return {
        grid,
      };
    },
    /**
     * 得到背景图、背景色及边框样式
     */
    getComponentStyle() {
      let backgroundData = {};
      if (Object.hasOwn(this.data.property, 'background_image_url')) {
        // 保护性读取位置/大小值，避免 undefined 导致字符串 "undefined%"
        const { background_position: pos } = this.data.property;
        const widthPct = typeof pos.width === 'undefined' ? '' : pos.width;
        const heightPct = typeof pos.height === 'undefined' ? '' : pos.height;
        const leftPct = typeof pos.left === 'undefined' ? '' : pos.left;
        const topPct = typeof pos.top === 'undefined' ? '' : pos.top;

        backgroundData.backgroundImage = `url(${this.data.property.background_image_url})`;
        let bcSize = '';
        if (pos.image_mode === 'fill') {
          bcSize = '100% 100%';
        } else if (pos.image_mode === 'repeat') {
          bcSize = 'auto';
        } else {
          bcSize = `${widthPct}% ${heightPct}%`;
        }
        backgroundData.backgroundSize = bcSize;
        backgroundData.backgroundPosition = pos.image_mode === 'fill' ? '0% 0%' : `${leftPct}% ${topPct}%`;
        backgroundData.backgroundRepeat = pos.image_mode === 'repeat' ? 'repeat' : 'no-repeat';
      }

      let borderData = {};
      if (Object.hasOwn(this.data.property, 'is_border')) {
        const isBorder = isEnable(this.data.property.is_border);
        borderData.borderWidth = isBorder ? (this.data.property.border_style === 'double' ? '3px' : '1px') : '0px';
        borderData.borderStyle = isBorder ? this.data.property.border_style : 'none';
        borderData.borderColor = isBorder ? this.data.property.border_color : 'transparent';
      }

      return {
        backgroundColor: this.data.property?.background_color,
        ...backgroundData,
        ...borderData,
      };
    },
    showAnswerAnalysis() {
      if (!this.answerAnalysisState) {
        this.answerAnalysisState = {
          disabled: this.disabled,
          isJudgingRightWrong: this.isJudgingRightWrong,
        };
      }
      this.visibleAnswerAnalysis = true;
      this.disabled = true;
      this.isJudgingRightWrong = this.permissionControl.can_judge_correct;
      this.isShowRightAnswer = this.permissionControl.can_show_answer;
    },
    closeAnswerAnalysis() {
      if (this.answerAnalysisState) {
        this.disabled = this.answerAnalysisState.disabled;
        this.isJudgingRightWrong = this.answerAnalysisState.isJudgingRightWrong;
        this.isShowRightAnswer = false;
        this.answerAnalysisState = null;
      } else {
        this.disabled = false;
        this.isJudgingRightWrong = false;
        this.isShowRightAnswer = false;
      }
    },
  },
};

export default mixin;