/* 使用策略模式、消除if else语句
 * 若等级规则增加、给scoreStrategies数组添加对象即可  所有和等级相关的都会随之更改
 * 食用方式：
 *      const { level, equity} = getLevel(score)
 *      level:等级 equity:权益
 */

export const scoreStrategies = [
  { minScore: 5000, level: "4" },
  { minScore: 2000, level: "3" },
  { minScore: 500, level: "2" },
  { minScore: 100, level: "1" },
  { minScore: 0, level: "0" },
];

export const gradeEquity = function (level) {
  return `${level * 1 === 0 ? "无门槛" : "V" + level}`;
};

export function getLevel(score) {
  for (let i = 0; i < scoreStrategies.length; i++) {
    if (score >= scoreStrategies[i].minScore) {
      return {
        level: scoreStrategies[i].level,
        equity: gradeEquity(`${scoreStrategies[i].level}`),
      };
    }
  }

  console.error(`score=${score},无法确定等级`);
  return "无法确定等级";
  /*
  strategyV1: function (score) {
    return score >= 0 && score <= 600 ? "V1" : null;
  },
  strategyV2: function (score) {
    return score >= 0 && score <= 600 ? "V1" : null;
  },
  strategyV3: function (score) {
    return score >= 0 && score <= 600 ? "V1" : null;
  },
  strategyV4: function (score) {
    return score >= 0 && score <= 600 ? "V1" : null;
  },
};
*/
  //   const levelMap = {};
  //   for (let strategy in scoreStrategies) {
  //     const level = scoreStrategies(strategy)(score);
  //     if (level) {
  //       return level;
  //     }
  //   }
  //   console.error(`score=${score},无法确定等级`);
  //   return "无法确定等级";
}