/**
 * Request 0.0.7
 * @Class uni-app request网络请求库
 * @Author lu-ch
 * @Date 2019-07-11
 * @Email webwork.s@qq.com
 * http://ext.dcloud.net.cn/plugin?id=392
 * **/


import { APIHOST } from '@/config'

// 基础配置
const constant = {
	hostUrl: APIHOST,
	source: 'mobile'
}

class Request {
	config = {
		baseUrl: constant.hostUrl,
		header: {
			'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8'
		},
		data: {},
		method: 'GET',
		dataType: 'json',  /* 如设为json，会对返回的数据做一次 JSON.parse */
		responseType: 'text',
		success() { },
		fail() { },
		complete() { }
	}

	static posUrl(url) { /* 判断url是否为绝对路径 */
		return /(http|https):\/\/([\w.]+\/?)\S*/.test(url)
	}

	interceptor = {
		request: (f) => {
			if (f && typeof f === 'function') {
				this.requestBeforeFun = f
			}
		},
		response: (f) => {
			if (f && typeof f === 'function') {
				this.requestComFun = f
			}
		}
	}

	requestBeforeFun(config, cancel) {
		let token = ''
		try {
			const st = uni.getStorageSync('token')
			if (st) {
				token = st
			}
		} catch (e) {
			console.error(e, '获取token异常')
		}
		config.header = {
			...config.header
		}
		// 将token 放入header
		if (token) {
			config.header['token'] = token
		}
		config.header['appVersion'] = 2
		// const token = uni.getStorageSync('token')
		// config.data = JSON.stringify(config.data);
		config.headers = {
			'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8'
		}
		// if (token) { // 判断是否存在token，如果存在的话，则每个http header都加上token
		// 	// axios.defaults.headers.common['token'] = token;
		// 	config.headers.token = token
		// }
		// config.headers.HkdsRequestFrom = window.location.href
		// config.header.userRegion = Base64.encode(uni.getStorageSync('userRegion')) || null
		// config.header['x-client-hash'] = uni.getStorageSync('client_hash') || null
		// const userRegion = Base64.encode(uni.getStorageSync('userRegion')) || null
		// if (userRegion) {
		// 	config.header.userRegion = userRegion
		// }
		const account = uni.getStorageSync('account') || null
		if (account) {
			config.header['account'] = account
		}
		// const source = uni.getStorageSync('source') || null
		// if (source) {
		// 	config.header['source'] = source
		// }
		if (constant.source == 'mobile') {
			const shopId = uni.getStorageSync('shopId') || 0
			if (shopId) {
				config.header['shopId'] = shopId
			}
		}
		if (config.config.loading) {
			uni.showLoading({
				title: '',
				mask: true
			})
		}
		return config
	}

	requestComFun(response) {
		if (response.config.config.loading) {
			uni.hideLoading()
		}
		return response
	}

	setConfig(f) {
		this.config = f(this.config)
	}

	request(options = {}, config) {
		options.baseUrl = options.baseUrl || this.config.baseUrl
		options.dataType = options.dataType || this.config.dataType
		options.url = Request.posUrl(options.url) ? options.url : (options.baseUrl + options.url)
		options.data = options.data || this.config.data
		options.header = options.header || this.config.header
		options.method = options.method || this.config.method
		
		return new Promise((resolve, reject) => {
			let next = true
			let _config = null
			
			options.complete = (response) => {
				const statusCode = response.statusCode
				response.config = _config
				response.config.config = config
				response = this.requestComFun(response)
				
				// 全局忽略错误，在单个请求里面自行处理
				if (config && config.hideError) {
					resolve(response.data)
					return
				}
				
				if (statusCode === 200) {
					if (response.data.code === 1) {
						resolve(response.data)
					} else {
						if (response.data.code == 0) {
							if (!config.hideError) {
								uni.showToast({ title: response.data.msg, icon: 'none', mask: false, duration: 2000 })
							}
							reject(response.data)
						} else if (response.data.code && response.data.code == -1) {
							// 特殊处理
						} else if (response.data.code == 2) {
							uni.removeStorageSync('token')
							uni.removeStorageSync('shopUser')
							uni.removeStorageSync('account')
						} else {
							if (!config.hideError) {
								uni.showToast({ title: response.data.msg, icon: 'none', mask: false })
							}
							reject(response.data)
						}
					}
				} else {
					if (!config.hideError) {
						uni.showToast({
							title: response.data.message || '请求失败',
							icon: 'none'
						})
					}
					reject(response)
				}
			}
			
			const cancel = (t = 'handle cancel') => {
				const err = {
					errMsg: t,
					config: afC
				}
				reject(err)
				next = false
			}
			
			const afC = { ...this.config, ...options, config: config }
			_config = { ...afC, ...this.requestBeforeFun(afC, cancel) }
			if (!next) return
			uni.request(_config)
		})
	}

	get(url, data = {}, options = {}, config = {}) {
		return this.request({
			url,
			data,
			method: 'GET',
			...options
		}, config)
	}

	post(url, data = {}, options = {}, config = {}) {
		return this.request({
			url,
			data,
			method: 'POST',
			...options
		}, config)
	}
}

const https = new Request()

export default https