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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | import type { ApiResult } from './types';
const API_BASE = '/api';
export class ApiError extends Error {
code: string;
status?: number;
constructor(code: string, message: string, status?: number) {
super(message);
this.name = 'ApiError';
this.code = code;
this.status = status;
}
}
// 保存 token 并通知扩展同步认证状态
function saveAuth(token: string) {
localStorage.setItem('authToken', token);
window.dispatchEvent(new CustomEvent('userLoggedIn', { detail: { token } }));
}
async function apiFetch<T>(endpoint: string, options?: RequestInit): Promise<ApiResult<T>> {
const token = localStorage.getItem('authToken');
const headers: Record<string, string> = {
'Content-Type': 'application/json',
...(token ? { Authorization: `Bearer ${token}` } : {}),
...(options?.headers as Record<string, string> || {}),
};
const res = await fetch(`${API_BASE}${endpoint}`, {
...options,
headers,
});
if (!res.ok) {
if (res.status === 401) {
localStorage.removeItem('authToken');
localStorage.removeItem('userInfo');
if (window.location.pathname !== '/login') {
window.location.href = '/login';
}
throw new ApiError('401', '认证已过期', res.status);
}
const body = await res.json().catch(() => null);
throw new ApiError(body?.code || String(res.status), body?.message || '请求失败', res.status);
}
const data: ApiResult<T> = await res.json();
if (!data.success) {
throw new ApiError(data.code || 'ERROR', data.message || '请求失败');
}
// Handle token refresh from response
if (data.token) {
saveAuth(data.token);
}
return data;
}
export const api = {
get: <T>(endpoint: string) => apiFetch<T>(endpoint, { method: 'GET' }),
post: <T>(endpoint: string, body?: unknown) =>
apiFetch<T>(endpoint, { method: 'POST', body: JSON.stringify(body) }),
put: <T>(endpoint: string, body?: unknown) =>
apiFetch<T>(endpoint, { method: 'PUT', body: JSON.stringify(body) }),
delete: <T>(endpoint: string) => apiFetch<T>(endpoint, { method: 'DELETE' }),
upload: async <T>(endpoint: string, formData: FormData) => {
const token = localStorage.getItem('authToken');
const headers: Record<string, string> = token ? { Authorization: `Bearer ${token}` } : {};
const res = await fetch(`${API_BASE}${endpoint}`, {
method: 'POST',
headers,
body: formData,
});
if (!res.ok) {
const body = await res.json().catch(() => null);
throw new ApiError(body?.code || String(res.status), body?.message || '上传失败', res.status);
}
const data: ApiResult<T> = await res.json();
if (!data.success) {
throw new ApiError(data.code || 'ERROR', data.message || '上传失败');
}
if (data.token) saveAuth(data.token);
return data;
},
};
// SSE streaming helper for POST-based streaming
export async function streamFetch(
endpoint: string,
body: unknown,
onChunk: (data: string) => void,
onDone: () => void,
onError: (error: string) => void,
): Promise<void> {
const token = localStorage.getItem('authToken');
const res = await fetch(`${API_BASE}${endpoint}`, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
...(token ? { Authorization: `Bearer ${token}` } : {}),
},
body: JSON.stringify(body),
});
if (!res.ok) {
onError(`HTTP ${res.status}`);
return;
}
const reader = res.body?.getReader();
if (!reader) {
onError('Stream not available');
return;
}
const decoder = new TextDecoder();
let buffer = '';
try {
while (true) {
const { done, value } = await reader.read();
if (done) break;
buffer += decoder.decode(value, { stream: true });
const lines = buffer.split('\n');
buffer = lines.pop() || '';
for (const line of lines) {
if (!line.startsWith('data:')) continue;
// 只去掉 'data: ' 前缀，保留内部空白（如段落分隔符 \n\n）
const data = line.length > 6 && line[5] === ' ' ? line.slice(6) : line.slice(5);
if (data === '[DONE]') {
onDone();
return;
}
if (data.startsWith('ERROR:')) {
onError(data.slice(6));
return;
}
onChunk(data);
}
}
} catch (e) {
onError(e instanceof Error ? e.message : 'Stream error');
}
}
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