import { digitToChinese } from '@/utils/transform';

// 题型选项
export const questionTypeOption = [
  {
    value: 'base',
    label: '基础题型',
    children: [
      { label: '选择题', value: 'select' },
      { label: '判断题', value: 'judge' },
      { label: '填空题', value: 'fill' },
      { label: '排序题', value: 'sort', disabled: true },
      { label: '连线题', value: 'matching' },
      { label: '选择声调', value: 'choose_tone' },
    ],
  },
  {
    value: 'spoken',
    label: '口语题',
    children: [
      { label: '朗读题', value: 'read_aloud' },
      { label: '听说训练', value: 'repeat' },
      { label: '看图说话', value: 'talk_picture' },
      { label: '对话练习', value: 'dialogue' },
    ],
  },
  {
    value: 'read',
    label: '阅读题',
  },
  {
    value: 'write',
    label: '写作题',
  },
  {
    value: 'chinese',
    label: '汉字题',
  },
];

// 练习名称
export const exerciseNames = questionTypeOption
  .map(({ label, value, children }) => {
    if (children) return children;
    return { label, value };
  })
  .flat()
  .reduce((obj, { label, value }) => {
    obj[value] = label;
    return obj;
  }, {});

// 题型类型列表
export const exerciseTypeList = questionTypeOption
  .map(({ value, children }) => {
    if (children) {
      return children.map(({ value: children_value }) => {
        return { [children_value]: [value, children_value] };
      });
    }
    return { [value]: [value] };
  })
  .flat()
  .reduce((obj, item) => {
    return { ...obj, ...item };
  }, {});

// 选项类型
export const optionTypeList = [
  { value: 'letter', label: '字母' },
  { value: 'number', label: '数字' },
  { value: 'chinese', label: '中文数字' },
];

// 计算选项方法
export const computeOptionMethods = {
  [optionTypeList[0].value]: (i) => String.fromCharCode(97 + i),
  [optionTypeList[1].value]: (i) => i + 1,
  [optionTypeList[2].value]: (i) => digitToChinese(i + 1),
};

/**
 * 改变选项类型
 * @param {object} data 数据
 */
export function changeOptionType(data) {
  let index = optionTypeList.findIndex(({ value }) => value === data.option_number_show_mode);
  data.option_number_show_mode = optionTypeList[index + 1]?.value || optionTypeList[0].value;
}

/**
 * 计算选项题号
 * @param {Number} i 序号
 * @param {String} option_number_show_mode 选项类型
 * @returns String 题号
 */
export function computedQuestionNumber(i, option_number_show_mode) {
  const computationMethod = computeOptionMethods[option_number_show_mode];
  if (computationMethod) {
    return computationMethod(i);
  }
  return '';
}

// 题干类型
export const stemTypeList = [
  { value: 'text', label: '纯文本' },
  { value: 'rich', label: '富文本' },
];

// 分值类型
export const scoreTypeList = [
  { value: 'aggregate', label: '总分' },
  { value: 'subdivision', label: '细分' },
];

// 选择类型
export const selectTypeList = [
  { value: 'single', label: '单选' },
  { value: 'multiple', label: '多选' },
];

// 开关选项
export const switchOption = [
  { value: 'true', label: '开启' },
  { value: 'false', label: '关闭' },
];

// 题号类型
export const questionNumberTypeList = [
  { value: 'recalculate', label: '重新计算' },
  { value: 'follow', label: '跟随上题' },
];

export const svgNS = 'http://www.w3.org/2000/svg'; // SVG命名空间