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* API 服务核心工具函数
* 统一的数据转换、错误处理等
*/
import { logger } from '@/src/utils/logger';
import type { ApiErrorDetail, ApiResponse, PaginatedResponse } from './types';
/**
* snake_case 转 camelCase
*/
export const snakeToCamel = (str: string): string => {
return str.replace(/_([a-z])/g, (_, letter) => letter.toUpperCase());
};
/**
* camelCase 转 snake_case
*/
export const camelToSnake = (str: string): string => {
return str.replace(/[A-Z]/g, (letter) => `_${letter.toLowerCase()}`);
};
/**
* 递归转换对象的所有 key 为 camelCase
*/
export function toCamelCase<T>(obj: unknown): T {
if (Array.isArray(obj)) {
return obj.map((item) => toCamelCase(item)) as unknown as T;
}
if (obj !== null && typeof obj === 'object' && !(obj instanceof Date)) {
const result: Record<string, unknown> = {};
for (const key of Object.keys(obj)) {
const camelKey = snakeToCamel(key);
result[camelKey] = toCamelCase((obj as Record<string, unknown>)[key]);
}
return result as T;
}
return obj as T;
}
/**
* 递归转换对象的所有 key 为 snake_case
*/
export function toSnakeCase<T>(obj: unknown): T {
if (Array.isArray(obj)) {
return obj.map((item) => toSnakeCase(item)) as unknown as T;
}
if (obj !== null && typeof obj === 'object' && !(obj instanceof Date)) {
const result: Record<string, unknown> = {};
for (const key of Object.keys(obj)) {
const snakeKey = camelToSnake(key);
result[snakeKey] = toSnakeCase((obj as Record<string, unknown>)[key]);
}
return result as T;
}
return obj as T;
}
/**
* 包装成功响应
*/
export const wrapSuccess = <T>(data: T): ApiResponse<T> => ({
data,
error: null,
success: true,
});
/**
* 包装错误响应
*/
export const wrapError = <T>(error: ApiErrorDetail): ApiResponse<T> => ({
data: null,
error,
success: false,
});
/**
* 从错误对象创建 ApiErrorDetail
*/
export const createErrorDetail = (error: unknown): ApiErrorDetail => {
if (error instanceof Error) {
return {
message: error.message,
code: (error as Error & { code?: string }).code,
details: error,
};
}
if (typeof error === 'string') {
return { message: error };
}
Eif (error && typeof error === 'object') {
const err = error as Record<string, unknown>;
return {
message: (err.message as string) || (err.detail as string) || '操作失败',
code: err.code as string,
details: err,
};
}
return { message: '未知错误' };
};
/**
* 统一的响应包装函数
*/
export const wrapResponse = <T>(data: T | null, error: unknown): ApiResponse<T> => {
if (error) {
return wrapError(createErrorDetail(error));
}
return wrapSuccess(data as T);
};
/**
* 转换后端分页响应为统一格式
*/
export function normalizePaginatedResponse<T>(
response: Record<string, unknown>,
page: number = 1,
pageSize: number = 20
): PaginatedResponse<T> {
const results =
(response.results as unknown[]) ||
(response.items as unknown[]) ||
(response.data as unknown[]) ||
[];
const count = (response.count as number) || (response.total as number) || results.length;
return {
results: Array.isArray(results) ? results.map((item) => toCamelCase<T>(item)) : [],
count,
page,
pageSize,
totalPages: Math.ceil(count / pageSize),
next: (response.next as string) || null,
previous: (response.previous as string) || null,
};
}
/**
* 从响应中提取数据（处理嵌套结构）
*/
export function extractData<T>(response: unknown, key?: string): T {
if (response && typeof response === 'object') {
const resp = response as Record<string, unknown>;
if (key && key in resp) {
return toCamelCase<T>(resp[key]);
}
// 尝试常见的嵌套 key
const commonKeys = ['data', 'result', 'item', 'record'];
for (const k of commonKeys) {
if (k in resp) {
return toCamelCase<T>(resp[k]);
}
}
}
return toCamelCase<T>(response);
}
/**
* 从响应中提取列表数据
*/
export function extractList<T>(response: unknown, key?: string): T[] {
if (response && typeof response === 'object') {
const resp = response as Record<string, unknown>;
if (key && key in resp) {
const list = resp[key];
if (Array.isArray(list)) {
return list.map((item) => toCamelCase<T>(item));
}
}
// 尝试常见的列表 key
const commonKeys = ['results', 'items', 'data', 'list', 'records'];
for (const k of commonKeys) {
if (k in resp) {
const list = resp[k];
if (Array.isArray(list)) {
return list.map((item) => toCamelCase<T>(item));
}
}
}
}
// 如果响应本身是数组
if (Array.isArray(response)) {
return response.map((item) => toCamelCase<T>(item));
}
return [];
}
/**
* 安全解析 Schema（带错误处理）
*/
export function safeParseSchema<T>(data: unknown, schema: { parse: (data: unknown) => T }): T {
try {
return schema.parse(data);
} catch (error) {
logger.error('Schema 验证失败', error as Error, { data });
throw new Error('服务器返回数据格式错误');
}
}
/**
* 开发环境日志
*/
export const devLog = (message: string, data?: unknown): void => {
logger.debug(`[API] ${message}`, data !== undefined ? { data } : undefined);
};
/**
* 开发环境错误日志
*/
export const devError = (message: string, error?: unknown): void => {
logger.error(`[API] ${message}`, error as Error);
};
/**
* 构建查询字符串
*/
export const buildQueryString = (params: Record<string, unknown>): string => {
const searchParams = new URLSearchParams();
Object.entries(params).forEach(([key, value]) => {
if (value !== undefined && value !== null && value !== '') {
if (Array.isArray(value)) {
searchParams.append(key, value.join(','));
} else {
searchParams.append(key, String(value));
}
}
});
const queryString = searchParams.toString();
return queryString ? `?${queryString}` : '';
};
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