105 lines
3.7 KiB
JavaScript
105 lines
3.7 KiB
JavaScript
/**
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* 前端请求封装。
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* - 游客会话走 cookie（credentials: include），会话失效由服务端重建
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* - 浏览器无法改写 User-Agent；X-Real-IP 由服务端反代上游时注入
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* - 直连上游时若需自定义头，请走本站 Go 代理接口
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*/
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(function (global) {
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var DEFAULT_TIMEOUT_MS = 30000;
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function buildQuery(params) {
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if (!params) return "";
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var pairs = [];
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Object.keys(params).forEach(function (key) {
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var value = params[key];
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if (value == null) return;
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pairs.push(encodeURIComponent(key) + "=" + encodeURIComponent(String(value)));
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});
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return pairs.length ? "?" + pairs.join("&") : "";
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}
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/**
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* @param {string} url
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* @param {{
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* method?: string,
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* data?: any,
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* params?: Record<string, any>,
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* headers?: Record<string, string>,
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* timeout?: number,
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* }} [options]
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*/
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function request(url, options) {
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options = options || {};
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var method = String(options.method || "GET").toUpperCase();
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var headers = Object.assign(
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{ Accept: "application/json" },
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options.headers || {}
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);
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var finalUrl = url + buildQuery(options.params);
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var body;
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var controller = typeof AbortController !== "undefined" ? new AbortController() : null;
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var timer;
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if (options.data != null && method !== "GET" && method !== "HEAD") {
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if (typeof FormData !== "undefined" && options.data instanceof FormData) {
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body = options.data;
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} else {
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headers["Content-Type"] = headers["Content-Type"] || "application/json";
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body =
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headers["Content-Type"].indexOf("application/json") >= 0
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? JSON.stringify(options.data)
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: options.data;
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}
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}
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var fetchOpts = {
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method: method,
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headers: headers,
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credentials: "include",
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signal: controller ? controller.signal : undefined,
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};
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if (body != null) fetchOpts.body = body;
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var timeoutMs =
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typeof options.timeout === "number" ? options.timeout : DEFAULT_TIMEOUT_MS;
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if (controller && timeoutMs > 0) {
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timer = setTimeout(function () {
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controller.abort();
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}, timeoutMs);
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}
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return fetch(finalUrl, fetchOpts)
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.then(function (res) {
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var contentType = res.headers.get("content-type") || "";
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var parse = contentType.indexOf("application/json") >= 0
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? res.json()
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: res.text();
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return parse.then(function (data) {
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if (!res.ok) {
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var err = new Error(
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(data && data.msg) || (data && data.message) || res.statusText || "request failed"
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);
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err.status = res.status;
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err.code = data && data.code;
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err.data = data;
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throw err;
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}
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return data;
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});
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})
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.finally(function () {
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if (timer) clearTimeout(timer);
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});
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}
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global.HttpRequest = {
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request: request,
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get: function (url, options) {
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return request(url, Object.assign({}, options, { method: "GET" }));
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},
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post: function (url, data, options) {
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return request(url, Object.assign({}, options, { method: "POST", data: data }));
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},
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};
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})(typeof window !== "undefined" ? window : this);
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