67 lines
2.4 KiB
TypeScript
67 lines
2.4 KiB
TypeScript
const API_BASE = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3001/api/v1';
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let apiAvailable: boolean | null = null;
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let probePromise: Promise<boolean> | null = null;
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async function checkApi(): Promise<boolean> {
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if (apiAvailable !== null) return apiAvailable;
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if (probePromise) return probePromise;
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probePromise = (async () => {
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try {
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// 探测一个不依赖数据库的端点（/config/ai 总是返回 200，只要 NestJS 起来了）
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const res = await fetch(`${API_BASE}/config/ai`, { method: 'GET', signal: AbortSignal.timeout(1500) });
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apiAvailable = res.ok;
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} catch {
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apiAvailable = false;
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}
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return apiAvailable;
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})();
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return probePromise;
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}
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async function request<T>(path: string, options?: RequestInit): Promise<T> {
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const available = await checkApi();
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if (!available) throw new Error('API 不可用');
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const res = await fetch(`${API_BASE}${path}`, {
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headers: { 'Content-Type': 'application/json', ...options?.headers },
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...options,
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}).catch(() => null);
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if (!res) throw new Error('API 不可用');
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if (!res.ok) {
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const error = await res.json().catch(() => ({}));
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throw new Error(error.message || `请求失败: ${res.status}`);
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}
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return res.json();
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}
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export const api = {
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get: <T>(path: string) => request<T>(path),
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post: <T>(path: string, data: unknown) =>
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request<T>(path, { method: 'POST', body: JSON.stringify(data) }),
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put: <T>(path: string, data: unknown) =>
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request<T>(path, { method: 'PUT', body: JSON.stringify(data) }),
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patch: <T>(path: string, data: unknown) =>
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request<T>(path, { method: 'PATCH', body: JSON.stringify(data) }),
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delete: <T>(path: string) => request<T>(path, { method: 'DELETE' }),
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postRaw: async <T>(path: string, data: unknown, timeoutMs = 120000): Promise<T> => {
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// 调用 AI 类长耗时接口时使用，跳过 checkApi 短路（确保走真实请求）
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const controller = new AbortController();
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const tid = setTimeout(() => controller.abort(), timeoutMs);
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try {
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const res = await fetch(`${API_BASE}${path}`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify(data),
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signal: controller.signal,
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});
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if (!res.ok) {
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const err = await res.json().catch(() => ({}));
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throw new Error(err.message || `请求失败: ${res.status}`);
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}
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return res.json();
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} finally {
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clearTimeout(tid);
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}
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},
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};
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