问给定API端点列表及其优先级，返回具有高优先级的API响应

EN

APIs = [
  { url: "api.weather.com/pin/213131", priority: 0 },
  { url: "api.weather.com/state/california", priority: 2 },
  { url: "api.weather.com/city/sanfrancisco", priority: 1 },
  { url: "api.weather.com/country/usa", priority: 3 },
];

function resolvePromiseWithPriority(APIS, timeout) {
  let PROMISES = APIS.sort((a, b) => a.priority - b.priority).map((api) => {
    return () =>
      new Promise((resolve, reject) => {
        fetch(api.url)
          .then((data) => resolve(data))
          .catch((err) => reject(err));
      });
  });

  let priorities = [...APIS.map((item) => item.priority)];
  let maxPriority = Math.min(...priorities);
  let minPriority = Math.max(...priorities);

  let results = [];
  let startTime = Date.now();

  return new Promise((resolve, reject) => {
    PROMISES.forEach((promise, priority) => {
      promise()
        .then((data) => {
          results[priority] = data;
          let gap = (Date.now() - startTime) / 1000;

          if (gap > timeout) {
            // resolve the current high priority promise, if no promises resolved before the timeout, resolve the first one resolved.
            // If all promises are rejected, reject this promise.

            if (!results[minPriority] instanceof Error)
              resolve(resolve[minPriority]);

            for (let item of results) {
              if (!item instanceof Error) resolve(item);
              reject("No promises resolved !!");
            }
          } else {
            if (priority === maxPriority) {
              // if the high priority promise gets it's data, resolve immediately.
              resolve(results[priority]);
            }

            if (priority < minPriority) {
              minPriority = priority;
            }
          }
        })
        .catch((err) => {
          results[priority] = err;
        });
    });
  });
}