class request {

    static BASE_URL = 'https://llzlovesh.top/api/'
    static HEAD = {
        "Content-Type": "application/json",
        "defaultToken": 'eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpYXQiOjE2MTY5MDg3NjAsImV4cCI6MjQ4MDgyMjM2MCwidXNlcklkIjoxMjM0NTY3ODksInZpc2l0b3IiOiJ2aXNpdG9yNjA2MDExZDg4NTQwYyIsImlzQWRtaW4iOjAsImFkbWluSWQiOjB9.7XrRxA3WYMBlqJWIXEw-71AxOxQvCc4VVVN6rlqn3uc',
        "token":'',
    }
    static constructor() {

    }

    /**
     * 设置统一的异常处理
     */
    static setErrorHandler(handler) {
        this._errorHandler = handler
    }

    /**
     * GET类型的网络请求
     */
    static getRequest(url, data, header = this.HEAD ) {

        const token = wx.getStorageSync('token')
        if (token) {
            header.token = token
        }else {
            header.token = header.defaultToken
        }
        return this.requestAll(url, data, header, 'GET')
    }

    /**
     * DELETE类型的网络请求
     */
    static deleteRequest(url, data, header = this.HEAD ) {
        const token = wx.getStorageSync('token')
        if (token) {
            header.token = token
        }else {
            header.token = header.defaultToken
        }
        return this.requestAll(url, data, header, 'DELETE')
    }

    /**
     * PUT类型的网络请求
     */
    static putRequest(url, data, header = this.HEAD ) {
        const token = wx.getStorageSync('token')
        if (token) {
            header.token = token
        }else {
            header.token = header.defaultToken
        }
        return this.requestAll(url, data, header, 'PUT')
    }

    /**
     * POST类型的网络请求
     */
    static postRequest(url, data, header = this.HEAD) {
        const token = wx.getStorageSync('token')
        if (token) {
            header.token = token
        }else {
            header.token = header.defaultToken
        }
        return this.requestAll(url, data, header, 'POST')
    }

    static upload(url, name, path, ortherData, header = this.HEAD){
        const token = wx.getStorageSync('token')
        if (token) {
            header.token = token
        }else {
            header.token = header.defaultToken
        }
        return new Promise((resolve, reject) => {
            wx.uploadFile({
                url: url,
                header: header,
                filePath: path,
                name: name,
                formData: ortherData,
                success: (res => {
                    res.data = JSON.parse(res.data);
                    if (res.data.code === 1) {
                        //200: 服务端业务处理正常结束
                        resolve(res.data)
                    } else {
                        if (res.data.code === 0){
                            wx.showToast({
                                title: res.data.message,
                            })
                        }
                        if (res.data.code === 901) {
                            _self.HEAD.token = ''
                        }
                        //其它错误，提示用户错误信息
                        if (this._errorHandler != null) {
                            //如果有统一的异常处理，就先调用统一异常处理函数对异常进行处理
                            this._errorHandler(res)
                        }
                        reject(res)
                    }
                }),
                fail: (res => {
                    if (this._errorHandler != null) {
                        this._errorHandler(res)
                    }
                    wx.showToast({
                      title: '网络异常请,稍后再试~',
                    })
                    reject(res)
                })
            })
        })
    }

    /**
     * 网络请求
     */
    static requestAll(url, data, header, method) {
        const _self = this
        wx.showLoading()
        return new Promise((resolve, reject) => {
            wx.request({
                url: url,
                data: data,
                header: header,
                method: method,
                success: (res => {
                    wx.hideLoading()
                    if (res.data.code === 1) {
                        //200: 服务端业务处理正常结束
                        resolve(res.data)
                    } else {
                        if (res.data.code === 0){
                            wx.showToast({
                                title: res.data.message,
                            })
                        }
                        if (res.data.code === 901) {
                            _self.HEAD.token = ''
                        }
                        //其它错误，提示用户错误信息
                        if (this._errorHandler != null) {
                            //如果有统一的异常处理，就先调用统一异常处理函数对异常进行处理
                            this._errorHandler(res)
                        }
                        reject(res)
                    }
                }),
                fail: (res => {
                    if (this._errorHandler != null) {
                        this._errorHandler(res)
                    }
                    wx.showToast({
                      title: '网络异常请,稍后再试~',
                    })
                    reject(res)
                })
            })
        })
    }
}

export default request