feat: инициализация API CodeGen
CLI утилита для генерации TypeScript API клиента из OpenAPI спецификации. - Поддержка локальных файлов и URL для спецификаций - Кастомизация имени выходного файла через флаг --name - Генерация типизированного клиента с SWR хуками - Минимальный вывод логов для лучшего UX
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250
src/templates/http-client.ejs
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250
src/templates/http-client.ejs
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<%
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const { apiConfig, generateResponses, config } = it;
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const baseUrl = apiConfig?.baseUrl || "";
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%>
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/**
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* Фетчер для SWR
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* Принимает URL и возвращает Promise с данными
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*/
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export const fetcher = <T = any>(url: string): Promise<T> => {
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return fetch(url, {
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headers: {
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"Content-Type": "application/json",
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},
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}).then(res => {
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if (!res.ok) {
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throw new Error(`HTTP Error ${res.status}`);
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}
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return res.json();
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});
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};
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export type QueryParamsType = Record<string | number, any>;
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export type ResponseFormat = keyof Omit<Body, "body" | "bodyUsed">;
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export interface FullRequestParams extends Omit<RequestInit, "body"> {
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/** set parameter to `true` for call `securityWorker` for this request */
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secure?: boolean;
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/** request path */
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path: string;
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/** content type of request body */
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type?: ContentType;
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/** query params */
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query?: QueryParamsType;
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/** format of response (i.e. response.json() -> format: "json") */
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format?: ResponseFormat;
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/** request body */
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body?: unknown;
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/** base url */
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baseUrl?: string;
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/** request cancellation token */
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cancelToken?: CancelToken;
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}
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export type RequestParams = Omit<FullRequestParams, "body" | "method" | "query" | "path">
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export interface ApiConfig<SecurityDataType = unknown> {
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baseUrl?: string;
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baseApiParams?: Omit<RequestParams, "baseUrl" | "cancelToken" | "signal">;
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securityWorker?: (securityData: SecurityDataType | null) => Promise<RequestParams | void> | RequestParams | void;
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customFetch?: typeof fetch;
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}
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export interface HttpResponse<D extends unknown, E extends unknown = unknown> extends Response {
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data: D;
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error: E;
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}
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type CancelToken = Symbol | string | number;
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export enum ContentType {
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Json = "application/json",
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JsonApi = "application/vnd.api+json",
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FormData = "multipart/form-data",
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UrlEncoded = "application/x-www-form-urlencoded",
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Text = "text/plain",
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}
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export class HttpClient<SecurityDataType = unknown> {
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public baseUrl: string = "<%~ baseUrl %>";
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private securityData: SecurityDataType | null = null;
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private securityWorker?: ApiConfig<SecurityDataType>["securityWorker"];
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private abortControllers = new Map<CancelToken, AbortController>();
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private customFetch = (...fetchParams: Parameters<typeof fetch>) => fetch(...fetchParams);
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private baseApiParams: RequestParams = {
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credentials: 'same-origin',
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headers: {},
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redirect: 'follow',
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referrerPolicy: 'no-referrer',
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}
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constructor(apiConfig: ApiConfig<SecurityDataType> = {}) {
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Object.assign(this, apiConfig);
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}
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public setSecurityData = (data: SecurityDataType | null) => {
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this.securityData = data;
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}
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protected encodeQueryParam(key: string, value: any) {
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const encodedKey = encodeURIComponent(key);
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return `${encodedKey}=${encodeURIComponent(typeof value === "number" ? value : `${value}`)}`;
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}
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protected addQueryParam(query: QueryParamsType, key: string) {
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return this.encodeQueryParam(key, query[key]);
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}
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protected addArrayQueryParam(query: QueryParamsType, key: string) {
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const value = query[key];
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return value.map((v: any) => this.encodeQueryParam(key, v)).join("&");
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}
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protected toQueryString(rawQuery?: QueryParamsType): string {
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const query = rawQuery || {};
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const keys = Object.keys(query).filter((key) => "undefined" !== typeof query[key]);
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return keys
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.map((key) =>
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Array.isArray(query[key])
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? this.addArrayQueryParam(query, key)
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: this.addQueryParam(query, key),
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)
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.join("&");
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}
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protected addQueryParams(rawQuery?: QueryParamsType): string {
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const queryString = this.toQueryString(rawQuery);
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return queryString ? `?${queryString}` : "";
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}
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private contentFormatters: Record<ContentType, (input: any) => any> = {
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[ContentType.Json]: (input:any) => input !== null && (typeof input === "object" || typeof input === "string") ? JSON.stringify(input) : input,
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[ContentType.JsonApi]: (input:any) => input !== null && (typeof input === "object" || typeof input === "string") ? JSON.stringify(input) : input,
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[ContentType.Text]: (input:any) => input !== null && typeof input !== "string" ? JSON.stringify(input) : input,
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[ContentType.FormData]: (input: any) => {
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if (input instanceof FormData) {
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return input;
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}
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return Object.keys(input || {}).reduce((formData, key) => {
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const property = input[key];
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formData.append(
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key,
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property instanceof Blob ?
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property :
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typeof property === "object" && property !== null ?
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JSON.stringify(property) :
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`${property}`
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);
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return formData;
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}, new FormData());
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},
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[ContentType.UrlEncoded]: (input: any) => this.toQueryString(input),
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}
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protected mergeRequestParams(params1: RequestParams, params2?: RequestParams): RequestParams {
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return {
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...this.baseApiParams,
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...params1,
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...(params2 || {}),
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headers: {
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...(this.baseApiParams.headers || {}),
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...(params1.headers || {}),
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...((params2 && params2.headers) || {}),
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},
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};
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}
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protected createAbortSignal = (cancelToken: CancelToken): AbortSignal | undefined => {
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if (this.abortControllers.has(cancelToken)) {
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const abortController = this.abortControllers.get(cancelToken);
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if (abortController) {
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return abortController.signal;
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}
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return void 0;
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}
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const abortController = new AbortController();
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this.abortControllers.set(cancelToken, abortController);
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return abortController.signal;
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}
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public abortRequest = (cancelToken: CancelToken) => {
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const abortController = this.abortControllers.get(cancelToken)
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if (abortController) {
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abortController.abort();
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this.abortControllers.delete(cancelToken);
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}
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}
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public request = async <T = any, E = any>({
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body,
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secure,
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path,
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type,
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query,
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format,
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baseUrl,
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cancelToken,
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...params
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<% if (config.unwrapResponseData) { %>
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}: FullRequestParams): Promise<T> => {
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<% } else { %>
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}: FullRequestParams): Promise<HttpResponse<T, E>> => {
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<% } %>
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const secureParams = ((typeof secure === 'boolean' ? secure : this.baseApiParams.secure) && this.securityWorker && await this.securityWorker(this.securityData)) || {};
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const requestParams = this.mergeRequestParams(params, secureParams);
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const queryString = query && this.toQueryString(query);
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const payloadFormatter = this.contentFormatters[type || ContentType.Json];
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const responseFormat = format || requestParams.format;
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return this.customFetch(
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`${baseUrl || this.baseUrl || ""}${path}${queryString ? `?${queryString}` : ""}`,
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{
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...requestParams,
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headers: {
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...(requestParams.headers || {}),
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...(type && type !== ContentType.FormData ? { "Content-Type": type } : {}),
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},
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signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
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body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
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}
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).then(async (response) => {
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const r = response as HttpResponse<T, E>;
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r.data = (null as unknown) as T;
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r.error = (null as unknown) as E;
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const responseToParse = responseFormat ? response.clone() : response;
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const data = !responseFormat ? r : await responseToParse[responseFormat]()
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.then((data) => {
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if (r.ok) {
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r.data = data;
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} else {
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r.error = data;
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}
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return r;
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})
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.catch((e) => {
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r.error = e;
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return r;
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});
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if (cancelToken) {
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this.abortControllers.delete(cancelToken);
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}
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<% if (!config.disableThrowOnError) { %>
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if (!response.ok) throw data;
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<% } %>
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<% if (config.unwrapResponseData) { %>
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return data.data;
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<% } else { %>
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return data;
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<% } %>
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});
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};
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}
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