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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 | 2x 2x 1x 1x 5x 5x 8x 8x 8x 8x 4x 1x 1x 1x 1x 1x 2x 2x 2x 2x 2x 1x 3x 1x 2x | import axios, { AxiosInstance, AxiosRequestConfig, AxiosResponse, AxiosError } from 'axios';
interface APIClientConfig {
baseURL: string;
timeout?: number;
retries?: number;
}
export class APIClient {
private axiosInstance: AxiosInstance;
private retries: number;
constructor(config: APIClientConfig) {
this.axiosInstance = axios.create({
baseURL: config.baseURL,
timeout: config.timeout || 5000,
});
this.retries = config.retries || 3;
}
public async requestWithRetry<T>(
method: 'GET' | 'POST' | 'PUT' | 'DELETE',
url: string,
data?: unknown,
config?: AxiosRequestConfig
): Promise<AxiosResponse<T>> {
let attempts = 0;
while (attempts < this.retries) {
try {
attempts++;
switch (method) {
case 'GET':
return await this.axiosInstance.get<T>(url, config);
case 'POST':
return await this.axiosInstance.post<T>(url, data, config);
case 'PUT':
return await this.axiosInstance.put<T>(url, data, config);
case 'DELETE':
return await this.axiosInstance.delete<T>(url, config);
default:
throw new Error(`Unsupported HTTP method: ${method}`);
}
} catch (error) {
if (attempts >= this.retries) {
this.handleError(error as AxiosError); // Throw the error after max retries
}
}
}
throw new Error('Request failed after max retries.'); // Fallback, though retries handle this
}
async fetchPaginated<T>(
url: string,
config?: AxiosRequestConfig,
paginationKey: string = 'next',
resultsKey: string = 'data'
): Promise<T[]> {
const results: T[] = [];
let nextPage: string | null = url;
while (nextPage) {
const response = await this.requestWithRetry<T>(`GET`, nextPage, undefined, config);
const responseData = response.data as Record<string, unknown>;
// Collect results
if (Array.isArray(responseData[resultsKey])) {
results.push(...(responseData[resultsKey] as T[]));
}
// Determine the next page
nextPage = (responseData[paginationKey] as string) || null;
}
return results;
}
private handleError(error: AxiosError): never {
if (error.response) {
throw error;
} else {
throw new Error(`Error: ${error.message}`);
}
}
}
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