import { __awaiter } from "tslib";
import { NoopObject, addTrailingSlash, queryString, removeHeadingSlash, } from "@dage/utils";
import { createHeader } from "./Header";
import { stringReplace, variableReplace } from "./replace";
import { detectContentType, headersToObject, methodsHasBody, serializeBody, serializeResponseBody, } from "./utils";
import { ResponseError } from "./error";
const DEFAULT_INTERCEPTOR = (_, next) => {
    return next();
};
export function createService() {
    let adapter;
    let initialized = false;
    /**
     * 是否初始化完成
     * @returns
     */
    function isInitialized() {
        return initialized;
    }
    /**
     * 获取 Base URL
     */
    function getBaseURL() {
        if (!initialized) {
            throw new Error("未初始化");
        }
        return adapter.baseURL;
    }
    /**
     * 解析响应
     */
    function parseResponse(response) {
        var _a, _b;
        if (response == null) {
            throw {
                message: "未能识别响应",
                code: -1,
            };
        }
        if (response.code !== 0) {
            throw new ResponseError(Object.assign(Object.assign({}, response), { errorMessage: (_a = response.errorMessage) !== null && _a !== void 0 ? _a : "请求失败", errorCode: (_b = response.errorCode) !== null && _b !== void 0 ? _b : -1 }));
        }
        return response;
    }
    /**
     * 初始化
     * @param options
     */
    function initial(options) {
        if (initialized && process.env.NODE_ENV === "development") {
            console.error("[@dage/service] 已经初始化过了, 不需要重复初始化");
        }
        adapter = options;
        adapter.baseURL = addTrailingSlash(options.baseURL);
        initialized = true;
    }
    function normalizeRequest(url, body, config = NoopObject) {
        var _a, _b, _c;
        return __awaiter(this, void 0, void 0, function* () {
            if (!initialized) {
                throw new Error("请先调用 initial 初始化");
            }
            const method = (_a = config.method) !== null && _a !== void 0 ? _a : "POST";
            const searchParams = {};
            const reqBody = body !== null && body !== void 0 ? body : NoopObject;
            // 路由参数替换
            url = stringReplace(url, reqBody);
            // 查询字符串处理
            const appendSearchParams = (obj, params = searchParams) => {
                Object.assign(params, obj);
            };
            if (config.searchParams) {
                appendSearchParams(config.searchParams);
            }
            // 报头处理
            const headers = createHeader();
            if (config.headers) {
                Object.keys(config.headers).forEach((key) => {
                    headers[key] = config.headers[key];
                });
            }
            if (methodsHasBody(method) && !headers["Content-Type"]) {
                const contentType = detectContentType(reqBody);
                if (contentType) {
                    headers["Content-type"] = contentType;
                }
            }
            const requestPayload = {
                name: url,
                method,
                body: reqBody,
                searchParams,
                headers,
                meta: (_b = config.meta) !== null && _b !== void 0 ? _b : NoopObject,
            };
            // 变量替换
            if (adapter.globalVariables) {
                variableReplace(requestPayload.body, adapter.globalVariables);
                variableReplace(requestPayload.searchParams, adapter.globalVariables);
                variableReplace(requestPayload.headers, adapter.globalVariables);
            }
            const interceptor = (_c = adapter.interceptor) !== null && _c !== void 0 ? _c : DEFAULT_INTERCEPTOR;
            // next 方法被拦截器调用的次数，如果调用次数过多，说明程序存在bug，不排除有无限循环的可能
            let nextCallTime = 0;
            const response = yield interceptor(requestPayload, () => __awaiter(this, void 0, void 0, function* () {
                nextCallTime++;
                // 最多 3 次
                if (nextCallTime > 3) {
                    throw new Error("拦截器调用 next 次数过多, 请检查代码，可能存在无限循环");
                }
                if (requestPayload.body && requestPayload.method === "GET") {
                    appendSearchParams(requestPayload.body, requestPayload.searchParams);
                }
                // 构建 href
                let href = url.startsWith("http")
                    ? url
                    : adapter.baseURL + removeHeadingSlash(url);
                if (Object.keys(requestPayload.searchParams).length) {
                    const temp = queryString.parseUrl(href);
                    href = queryString.stringifyUrl({
                        url: temp.url,
                        query: Object.assign(Object.assign({}, temp.query), requestPayload.searchParams),
                        fragmentIdentifier: temp.fragmentIdentifier,
                    });
                }
                /**
                 * 主体处理
                 */
                const finalBody = requestPayload.body && methodsHasBody(requestPayload.method)
                    ? serializeBody(requestPayload.headers, requestPayload.body)
                    : undefined;
                const res = yield adapter.fetch(href, {
                    method: requestPayload.method,
                    headers: requestPayload.headers,
                    body: finalBody,
                    mode: "cors",
                });
                if (!res.ok) {
                    console.error(res);
                    throw new Error(`[@dage/service]请求 ${url} 失败: ${res.status}`);
                }
                const resData = yield serializeResponseBody(res, config);
                // @ts-expect-error
                const clone = Object.assign(Object.assign({}, resData), { 
                    // 原始请求信息
                    __raw__: {
                        statusCode: res.status,
                        data: resData,
                        header: headersToObject(res.headers),
                    } });
                return clone;
            }));
            // 解析协议
            return parseResponse(response);
        });
    }
    /**
     * 请求方法，默认使用 POST 方法
     */
    function request(url, body, config) {
        return __awaiter(this, void 0, void 0, function* () {
            return (yield normalizeRequest(url, body, config)).data;
        });
    }
    const requestByPost = request;
    function requestByGet(url, body, config) {
        return __awaiter(this, void 0, void 0, function* () {
            return (yield normalizeRequest(url, body, Object.assign({ method: "GET" }, config)))
                .data;
        });
    }
    /**
     * 列表接口请求, 默认为 POST 请求
     */
    function requestPagination(name, body, config) {
        return __awaiter(this, void 0, void 0, function* () {
            return (yield normalizeRequest(name, body, Object.assign({ method: "POST" }, config)));
        });
    }
    return {
        getBaseURL,
        parseResponse,
        initial,
        isInitialized,
        request,
        requestByPost,
        requestByGet,
        requestPagination,
    };
}
const DEFAULT_SERVICE = createService();
/**
 * 获取 Base URL
 * @returns
 */
export const getBaseURL = DEFAULT_SERVICE.getBaseURL;
/**
 * 解析响应
 * @param response
 * @returns
 */
export const parseResponse = DEFAULT_SERVICE.parseResponse;
/**
 * 是否初始化完成
 * @returns
 */
export const isInitialized = DEFAULT_SERVICE.isInitialized;
/**
 * 初始化
 * @param options
 */
export const initial = DEFAULT_SERVICE.initial;
export const request = DEFAULT_SERVICE.request;
export const requestByPost = DEFAULT_SERVICE.requestByPost;
export const requestByGet = DEFAULT_SERVICE.requestByGet;
export const requestPagination = DEFAULT_SERVICE.requestPagination;