import { useEffect, useState } from 'react';

import {
  isGeneratedLegacyPath,
  resolveAssetReadUrl,
} from '../services/assetReadUrlService';

type UseResolvedAssetReadUrlOptions = {
  enabled?: boolean;
  expireSeconds?: number;
};

export function useResolvedAssetReadUrl(
  source: string | null | undefined,
  options: UseResolvedAssetReadUrlOptions = {},
) {
  const enabled = options.enabled !== false;
  const normalizedSource = source?.trim() ?? '';
  const shouldResolve =
    enabled && Boolean(normalizedSource) && isGeneratedLegacyPath(normalizedSource);
  const [resolvedUrl, setResolvedUrl] = useState(
    shouldResolve ? '' : normalizedSource,
  );

  useEffect(() => {
    if (!normalizedSource) {
      setResolvedUrl('');
      return;
    }

    if (!shouldResolve) {
      setResolvedUrl(normalizedSource);
      return;
    }

    let cancelled = false;
    // 生成资源通常是 OSS 私有对象；签名 URL 未就绪前不能把裸 generated 路径交给 img 触发无鉴权 GET。
    setResolvedUrl('');

    void resolveAssetReadUrl(normalizedSource, {
      expireSeconds: options.expireSeconds,
    })
      .then((nextUrl) => {
        if (!cancelled) {
          setResolvedUrl(nextUrl);
        }
      })
      .catch(() => {
        if (!cancelled) {
          // 签名失败时保持空 src，避免继续请求无签名的私有对象兼容路径。
          setResolvedUrl('');
        }
      });

    return () => {
      cancelled = true;
    };
  }, [normalizedSource, options.expireSeconds, shouldResolve]);

  return {
    resolvedUrl,
    isResolving: shouldResolve && !resolvedUrl,
    shouldResolve,
  };
}