const GET = 'GET';
const POST = 'POST';
const PUT = 'PUT';
const FORM = 'FORM';
const DELETE = 'DELETE';
import config from '@/config/index.js'
const baseURL = config.BASE_URL;

const waitingList = [] //等待队列
const excutingList = [] //执行队列
let showLogoutModal = true //是否显示冻结弹窗

function request(method, url, data, type, lodingFlag) {
	if (lodingFlag) {
		uni.showLoading({
			mask: true,
		})
	}

	return new Promise(function(resolve, reject) {
		let token = uni.getStorageSync('token')
		token =
			'Bearer eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOjE4OTU1MjI1Nzk1MDcwODEyMTgsInR5cGUiOjEsImV4cCI6MTc0Nzk4MzIyMiwiY3JlYXRlZCI6MTc0NjY4NzIyMjAxMX0.pmUfTkxkbBirDMbnMR1IaLsbSiiwHc366_yyAetCzTOWYxTNgmQlmvw26_W62NHLOebB_ZAEgZsPvkJcaLOoPg'
		uni.setStorageSync('token', token)
		let header = {
			'content-type': type ? 'application/x-www-form-urlencoded;charset=UTF-8' : 'application/json',
			'Authorization': token,
			'lang': uni.getStorageSync('locale') === 'zh-Hans' ? 'zh_CN' : 'zh-tw',
		}
		const requestTask = uni.request({
			url: baseURL + url,
			method: method,
			data: data,
			header: header,
			success: (res) => {
				//判断状态码
				if (lodingFlag) {
					uni.hideLoading()
				}
				if (res.data.code == 200) {
					resolve(res.data);
					return
				}
				if (res.data.code == 502) {
					resolve(res.data);
					uni.showToast({
						title: res.data.msg,
						duration: 2000,
						icon: 'none',
						mask: true,
					})
					return
				}
				if (res.data.code == 500 && url.includes('/applet/user/check')) {
					resolve(res.data);

					return
				}
				if (res.data.code == 1 || res.data.code == 500) {
					uni.showToast({
						title: res.data.msg || res.data.data || '服务器错误',
						duration: 2000,
						icon: 'none',
						mask: true,
					})
					return
				}
				if (res.data.code == 401 || res.data.code == 510 || res.data.code == 504 || res.data
					.code == 505) {
					uni.removeStorageSync('token')
					if (res.data.code == 504) {
						uni.showToast({
							title: res.data.msg,
							duration: 2000,
							icon: 'none',
							mask: true,
						})
					} else if (res.data.code == 505) {
						handleLogout('当前登录账号在其他设备登录')
					} else {
						handleLogout('登录失效，请重新登录')
					}
					return
				}

				if (res.data.code == 501) {
					uni.showToast({
						title: res.data.msg,
						duration: 2000,
						icon: 'none',
						mask: true,
					})
					return
				}
				if (res.data.code == 506) {
					resolve(res.data);
					return
				}
				uni.showToast({
					title: res.data.msg || '服务器错误',
					duration: 2000,
					icon: 'none',
					mask: true,
				})

			},
			fail(err) {
				if (lodingFlag) {
					uni.hideLoading()
				}
				reject(err)
			},
			complete: () => {
				const excutingIndex = excutingList.findIndex(item => item === requestTask)
				excutingList.splice(excutingIndex, 1)
				const [apiFn] = waitingList
				if (excutingList.length === 0 && typeof apiFn === 'function') {
					apiFn()
					waitingList.splice(0, 1)
				}
			},
		})
		excutingList.push(requestTask)
	})
}

// 被冻结跳转到登录页并取消后续请求
function handleLogout(str) {
	let routeStr = getCurrentPages()[getCurrentPages().length - 1].route
	if (excutingList.length >= 1) {
		showLogoutModal = true
	}
	if (showLogoutModal) {
		showLogoutModal = false
		uni.showModal({
			title: '提示',
			content: str,
			showCancel: false,
			success: function(res) {
				if (res.confirm) {
					// if (routeStr == 'pages/login/index') {
					// 	uni.reLaunch({
					// 		url: '/pages/login/index'
					// 	})
					// 	return
					// }
					// uni.reLaunch({
					// 	url: '/pages/login/index'
					// })
				}
			}
		});
		clearAllRequest()
	}
}

// 清除请求队列
function clearAllRequest() {
	if (excutingList.length > 0) {
		for (var i = 0; i < excutingList.length; i++) {
			const item = excutingList[i]
			if (item && item.abort) {
				item.abort()
			}
		}
		excutingList.length = 0
		waitingList.length = 0
	}
}

export default {
	get: (url, data, type = false, lodingFlag = true) => request(GET, url, data, type, lodingFlag),
	post: (url, data, type = false, lodingFlag = true) => request(POST, url, data, type, lodingFlag),
	put: (url, data, type = false, lodingFlag = true) => request(PUT, url, data, type, lodingFlag),
	FORM: (url, data, type = false, lodingFlag = true) => request(FORM, url, data, type, lodingFlag),
	delete: (url, data, type = false, lodingFlag = true) => request(DELETE, url, data, type, lodingFlag),
}