feat: scaffold headless frontend integration per design doc
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/**
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* Wagtail API v2 请求客户端。
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* 详见 documents/设计方案分析与完善版.md §2.7 Headless API 设计规范。
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*/
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const API_BASE_URL = process.env.NEXT_PUBLIC_API_URL ?? "http://localhost:8000";
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export class ApiError extends Error {
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constructor(
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message: string,
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public status: number,
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) {
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super(message);
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this.name = "ApiError";
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}
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}
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interface FetchOptions {
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/** ISR 重新验证秒数,默认 60s。传 0 表示不缓存(用于预览)。 */
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revalidate?: number;
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/** 关联的缓存标签,供 revalidateTag 精准失效使用。 */
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tags?: string[];
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}
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export async function fetchAPI<T>(
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path: string,
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{ revalidate = 60, tags }: FetchOptions = {},
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): Promise<T> {
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const res = await fetch(`${API_BASE_URL}${path}`, {
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next: { revalidate, tags },
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});
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if (!res.ok) {
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throw new ApiError(`API request failed: ${path}`, res.status);
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}
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return res.json() as Promise<T>;
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}
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