<template>
	<view class="im_index">
		<view class="im_item" v-for="(item,index) in imList" :key="index"
			@click="jumpPage(item.supplier_user_id,item.shop_supplier_id,item.supplier.name)">
			<view class="im_item_left">
				<image :src="item.supplier.logo.file_path" mode=""></image>
			</view>
			<view class="im_item_right">
				<view class="im_item_right_item">
					<view class="title text-ellipsis">{{item.supplier.name}}</view>
					<view class="time">{{item.newMessage.create_time}}</view>
				</view>
				<view class="im_item_right_item">
					<view class="content" v-if="item.newMessage.type==0">{{item.newMessage.content}}</view>
					<view class="content" v-if="item.newMessage.type==1">[图片]</view>
					<view class="content" v-if="item.newMessage.type==2">[商品]</view>
					<view v-if="item.num>0" class="message">{{item.num}}</view>
				</view>
			</view>
		</view>
		<view class="hint" v-if="imList.length==0">
			您当前并没有与任何人聊天哦！
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				imList: [],
				user_id: '',
				official: '', //站内信数据
				logistic: '', //物流数据
				socketTask: null,
				// 确保websocket是打开状态
				is_open_socket: false,
				url: '',
				// 心跳定时器
				intervalId: null,
				/* 初次进入 */
				is_live: false,
				my_user_id: ''
			}
		},
		onShow() {
			this.get_im_list();
		},
		onLoad() {
			this.my_user_id = uni.getStorageSync('user_id');
		},
		beforeDestroy() {
			console.log('beforeDestroy');
			// 销毁监听
			this.closeSocket();
			this.is_live = true;
		},
		methods: {
			send: function(data) {
				let self = this;
				if (self.is_open_socket) {
					self.socketTask.send({
						data: data,
						success() {

						}
					});
				} else {
					console.log("处于离线状态");
					self.socketTask = null;
					self.is_open_socket = false;
					clearInterval(self.intervalId);
					self.socketInit();
				}
			},
			socketInit() {
				let self = this;
				if (self.is_open_socket) {
					return;
				}
				self.socketTask = null;
				self.socketTask = uni.connectSocket({
					url: self.url + '/socket?user_id=' + self.getUserId() + '&usertype=user' + '&to=0',
					success() {
						console.log('Socket连接成功！');
					}
				});
				// 消息的发送和接收必须在正常连接打开中,才能发送或接收【否则会失败】
				self.socketTask.onOpen((res) => {
					console.log("WebSocket连接正常打开中...！");
					self.is_open_socket = true;
					// 开始发送心跳
					self.startHeart();
					// 注：只有连接正常打开中 ，才能正常收到消息
					self.socketTask.onMessage(function(res) {
						console.log("收到服务器内容：");
						console.log(res);
						self.getNewcontent(res);
					});
				});
				// 这里仅是事件监听【如果socket关闭了会执行】
				self.socketTask.onClose(() => {
					console.log("已经被关闭了");
					//重连机制
					self.socketTask = null;
					self.is_open_socket = false;
					clearInterval(self.intervalId);
					!self.is_live && self.socketInit();
				});
			},
			getNewcontent(res) {
				let newdata = JSON.parse(res.data);
				//绑定用户
				if (newdata.type == 'init') {
					let self = this;
					self._post(
						'plus.chat.chat/bindClient', {
							client_id: newdata.client_id,
							supplier_user_id: 0,
						},
						function(res) {

						}
					);
				}
			},
			//获取聊天列表
			get_im_list() {
				let self = this;
				self._post('plus.chat.chat/index', {

				}, (res) => {
					console.log(res)
					self.imList = res.data.list;
					self.official = res.data.official;
					self.logistic = res.data.logistic;
					if(self.url==''){
						self.url = res.data.url;
						self.$nextTick(function() {
							self.socketInit();
						});
					}
				})
			},
			closeSocket: function() {
				let self = this;
				let data = JSON.stringify({
					type: 'close',
					app_id: self.getAppId(),
					supplier_user_id: 0,
					user_id: self.my_user_id,
					shop_supplier_id: 0,
					msg_type: 2,
				});
				self.send(data);
				self.socketTask.close({
					success(res) {
						console.log("关闭成功", res)
					},
					fail(err) {
						console.log("关闭失败", err)
					}
				});
				self.socketTask = null;
				self.is_open_socket = false;
				clearInterval(self.intervalId);
			},
			jumpPage(user_id, shop_supplier_id, nickName) {
				if (shop_supplier_id == uni.getStorageInfoSync('user_id')) {
					return false
				}
				this.gotoPage('/pages/plus/chat/chat?user_id=' + user_id + '&shop_supplier_id=' + shop_supplier_id +
					'&nickName=' + nickName);
			},
			gotoMessage(val) {
				this.gotoPage('/pages/im/message?type=' + val);
			},

		}
	}
</script>

<style>
	.im_index {
		width: 100%;
	}

	.im_item {
		width: 90%;
		height: 120rpx;
		margin: 0 auto;
		display: flex;
		align-items: center;
	}

	.im_item_left {
		box-sizing: border-box;
		display: flex;
		justify-content: center;
		align-items: center;
	}

	.im_item_left image {
		width: 80rpx;
		height: 80rpx;
		margin: 0 auto;
		margin-top: 5%;
		border-radius: 50%;
		background-color: rgba(0, 0, 0, 0.1);
	}

	.im_item_right {
		width: 555rpx;
		padding: 10rpx;
		border-bottom: 1px #dcdcdc solid;
		box-sizing: border-box;
		display: flex;
		flex-direction: column;
	}

	.message {
		width: 30rpx;
		height: 30rpx;
		border-radius: 50%;
		color: white;
		background-color: red;
		display: flex;
		justify-content: center;
		align-items: center;
		font-size: 15rpx;
	}

	.im_item_right_item {
		display: flex;
		align-items: center;
		justify-content: space-between;
		margin-bottom: 10rpx;
	}

	.title {
		font-size: 32rpx;
	}


	.guangfang {
		font-size: 16rpx;
		color: #F36A24;
		border: 1rpx #F36A24 solid;
		border-radius: 10rpx;
		padding: 5rpx 10rpx;
		box-sizing: border-box;
		position: relative;
		left: -65rpx;
	}

	.time {
		font-size: 26rpx;
		color: #999999;
		flex-shrink: 0;
	}

	.content {
		font-size: 26rpx;
		color: #999999;
		overflow: hidden;
		text-overflow: ellipsis;
		white-space: nowrap;
		overflow: hidden;
		word-break: break-all;
	}

	.hint {
		width: 750rpx;
		text-align: center;
		font-size: 32rpx;
		color: #585858;
		margin-top: 20rpx;
	}
</style>
