small-program/src/utils/request.ts

import Taro from "@tarojs/taro";
import qs from "qs";
import ModalUtil from "./modalUtil";


interface IRequestBaseResult<T> {
    code?: 0;
    data: T;
    msg: string;
}

interface IRequestOptions {
    tips?: string | true;
    success?: string | true;
    errorTips?: string | true;
    loading?: string | true;
    contentType?: "json" | "urlencoded" | "formData";
    data?: Record<string, any>,
    params?: Record<string, any>,
}

export interface AxiosRequestConfigFunc<B, P> extends Omit<IRequestOptions, "data" | "params"> {
    data?: B,
    params?: P
}

export default class RequestUtil<T> {
    promise: Promise<Taro.request.SuccessCallbackResult<IRequestBaseResult<T>>>;


    public constructor(url: string, method: "POST" | "GET" | "PUT" | "DELETE", options: IRequestOptions) {
        this.promise = this.runRequest(url, method, options);
    }

    public runRequest(url: string, method: "POST" | "GET" | "PUT" | "DELETE", options: IRequestOptions) {
        return new Promise<Taro.request.SuccessCallbackResult<IRequestBaseResult<T>>>((resolve, rej) => {
            if (options.params) {
                url += "?" + qs.stringify(options.params);
            }
            Taro.request({
                url,
                method,
                data: options.data,
                fail: () => {
                    options.loading && Taro.hideLoading();
                    rej();
                },
                success: (res) => {
                    // if (typeof res.data === "string") {
                    //     try {
                    //         res.data = JSON.parse(res.data);
                    //     } catch (error) {

                    //     }
                    // }
                    options.loading && Taro.hideLoading();
                    let _success = this.checkSuccessSync(res);

                    if (_success) {
                        ModalUtil.toast(typeof (options.success) === "string" ? options.success : res.data.msg);
                    }
                    else {
                        ModalUtil.toast(res.data.msg);
                    }
                    // else if (res.data.code !== 0 && (options.tips || options.errorTips)) {

                    // }
                    // else if (res.data.code === 10001) {
                    //     // ModalUtil.toast("登录失效");
                    //     // MemberHelper.clearMemberInfo();
                    //     // Taro.reLaunch({
                    //     //     url: "/pages/user/userLogin/index"
                    //     // })
                    // }
                    resolve(res);
                },
            })
        });

    }


    private checkSuccessSync(data: Taro.request.SuccessCallbackResult<IRequestBaseResult<T>>) {
        return data.statusCode >= 200 && data.statusCode < 300 && data.data.code === 0;
    }

    /**是否正确 */
    public async checkSuccess() {
        return this.promise.then(this.checkSuccessSync)
    }

    public async toData() {
        return this.promise
            .then((p) => {
                if (this.checkSuccessSync(p)) {
                    return p.data.data;
                }
                return null;
            })
    }


}