zhapp/pages/chat/chat.vue

<template>
	<view class="page">
		<!-- 空盒子用来防止消息过少时 拉起键盘会遮盖消息 -->
		<view :animation="anData" style="height:0;">

		</view>
		<!-- 消息体 -->
		<scroll-view scroll-with-animation scroll-y="true" @touchmove="hideKey" style="width: 750rpx;"
			:style="{'height':srcollHeight}" :scroll-top="go">
			<!-- 用来获取消息体高度 -->
			<view id="okk" scroll-with-animation>
				<!-- 消息 -->
				<view class="flex-column-start" v-for="(x,i) in msgList" :key="i">
					<!-- 用户消息 头像可选加入-->
					<view v-if="x.my" class="flex justify-end padding-right one-show  align-start  padding-top">
						<!-- 	<image v-if="!x.my" class="chat-img" src="../../static/..." mode="aspectFill" ></image> -->
						<view class="flex justify-end" style="width: 400rpx;">
							<view class="margin-left padding-chat bg-blue" style="border-radius: 6px;">
								<text style="word-break: break-all;">{{x.msg}}</text>
							</view>
						</view>
					</view>
					<!-- 机器人消息 -->
					<view v-if="!x.my" class=" margin-left margin-top one-show">
						<view class="dis j-c a-c mt-1 mb-3 ">
							<text class="initTime">{{x.initTime}}</text>
						</view>
						<view class="flex" style="max-width: 650rpx;">
							<view class=" chatBox  dis j-s a-c" style="">
								<image v-if="i==0" src="/static/image/customerService1.png" mode=""
									style="width: 47px;height: 50px;position: absolute;left: 0;bottom: 0;">
								</image>
								<text :style="{ marginLeft: i === 0 ? '40px' : '0px' }">{{x.msg}}</text>
							</view>
						</view>
					</view>
				</view>
				<!-- loading是显示 -->
				<view v-show="msgLoad" class="flex-row-start margin-left margin-top">
					<!-- <view class="chat-img flex-row-center">
						<image style="height: 75rpx;width: 75rpx;" src="../../static/image/robt.png" mode="aspectFit">
						</image>
					</view> -->
					<view class="flex" style="width: 500rpx;">
						<view class="margin-left padding-chat flex-column-start"
							style="border-radius: 35rpx;background-color: #f9f9f9;">
							<view class="cuIcon-loading turn-load" style="font-size: 35rpx;color: #0081ff;">

							</view>
						</view>
					</view>
				</view>
				<!-- 防止消息底部被遮 -->
				<view style="height: 100px;">

				</view>
			</view>
		</scroll-view>
		<!-- 底部导航栏 -->
		<view class="flex-column-center" style="position: fixed;bottom: -180px;" :animation="animationData">
			<view class="bottom-dh-char flex-row-around" style="font-size: 55rpx;">
				<!-- vue无法使用软键盘"发送" -->
				<input v-model="msg" class="dh-input" type="text" style="background-color: #f0f0f0;" @confirm="sendMsg"
					confirm-type="search" placeholder-class="my-neirong-sm" placeholder="请描述您的问题" />
				<view class="bg-blue "
					style="border-radius: 6px;font-size: 12px;padding: 5px 10px;box-sizing: border-box;"
					@click="sendMsg">
					发送
				</view>
			</view>
			<!-- 附加栏(自定义) -->
			<view class="box-normal flex-row-around flex-wrap">
				<view class="tb-text">
					<view class="cuIcon-form"></view>
					<text>问题反馈</text>
				</view>
				<view class="tb-text">
					<view class="cuIcon-form"></view>
					<text>人工客服</text>
				</view>

			</view>
		</view>




	</view>
</template>

<script>
	// rpx和px的比率
	var l
	// 可用窗口高度
	var wh
	// 顶部空盒子的高度
	var mgUpHeight
	export default {
		onLoad() {
			// 如果需要缓存消息缓存msgList即可
			// 监听键盘拉起
			// 因为无法控制键盘拉起的速度,所以这里尽量以慢速处理
			uni.onKeyboardHeightChange(res => {
				const query = uni.createSelectorQuery()
				query.select('#okk').boundingClientRect(data => {
					// 若消息体没有超过2倍的键盘则向下移动差值,防止遮住消息体
					var up = res.height * 2 - data.height - l * 110
					if (up > 0) {
						// 动态改变空盒子高度
						this.msgMove(up, 300)
						// 记录改变的值,若不收回键盘且发送了消息用来防止消息过多被遮盖
						mgUpHeight = up
					}
					// 收回
					if (res.height == 0) {
						this.msgMove(0, 0)
					}
				}).exec();
			})
			var query = uni.getSystemInfoSync()

			l = query.screenWidth / 750
			wh = query.windowHeight
			this.srcollHeight = query.windowHeight + "px"
		},
		data() {
			return {
				realTime: "",
				msgLoad: false,
				anData: {},
				animationData: {},
				showTow: false,
				// 消息体,定义机器人初次的消息(或者自定义出现时机)
				// my->谁发的消息 msg->消息文本 type->客服消息模板类型 questionList->快速获取问题答案的问题列表
				msgList: [{
					my: false,
					msg: "您好，掌柜智能客服助理为您服务！",
					initTime: this.getFormattedTime(),
				}],
				msg: "",
				go: 0,
				srcollHeight: 0
			}
		},
		methods: {
			getFormattedTime() {
				const date = new Date();
				const year = date.getFullYear();
				const month = (date.getMonth() + 1).toString().padStart(2, '0');
				const day = date.getDate().toString().padStart(2, '0');
				const hours = date.getHours().toString().padStart(2, '0');
				const minutes = date.getMinutes().toString().padStart(2, '0');

				return `${year}-${month}-${day} ${hours}:${minutes}`;
			},
			// 切换输入法时移动输入框(按照官方的上推页面的原理应该会自动适应不同的键盘高度-->官方bug)
			goPag(kh) {
				this.upTowmn(0, 250)
				if (this.keyHeight != 0) {
					if (kh - this.keyHeight > 0) {
						this.upTowmn(this.keyHeight - kh, 250)
					}

				}
			},
			// 移动顶部的空盒子
			msgMove(x, t) {
				var animation = uni.createAnimation({
					duration: t,
					timingFunction: 'linear',
				})

				this.animation = animation

				animation.height(x).step()

				this.anData = animation.export()
			},
			// 保持消息体可见
			msgGo() {
				const query = uni.createSelectorQuery()
				// 延时100ms保证是最新的高度
				setTimeout(() => {
					// 获取消息体高度
					query.select('#okk').boundingClientRect(data => {
						// 如果超过scorll高度就滚动scorll
						if (data.height - wh > 0) {
							this.go = data.height - wh

						}
						// 保证键盘第一次拉起时消息体能保持可见
						var moveY = wh - data.height
						// 超出页面则缩回空盒子
						if (moveY - mgUpHeight < 0) {
							// 小于0则视为0
							if (moveY < 0) {
								this.msgMove(0, 200)
							} else {
								// 否则缩回盒子对应的高度
								this.msgMove(moveY, 200)
							}
						}

					}).exec();
				}, 100)
			},
			// 回答问题的业务逻辑
			answer(id) {
				// 这里应该传入问题的id,模拟就用index代替了

			},
			sendMsg() {
				// 消息为空不做任何操作
				if (this.msg == "") {
					return 0;
				}
				// 显示消息 msg消息文本,my鉴别是谁发的消息(不能用俩个消息数组循环,否则消息不会穿插)
				this.msgList.push({
					"msg": this.msg,
					"my": true
				})

				// 保证消息可见
				this.msgGo()
				// 回答问题
				this.msgKf(this.msg)
				// 清除消息
				this.msg = ""
			},
			async msgKf(x) {
				// loading
				this.msgLoad = true
				// 这里连接服务器获取答案
				let res = await this.$http.post('/customer/ai/sendMessage', {
					message: this.msg
				});
				if (res.code == 200) {
					// 下面模拟请求
					setTimeout(() => {
						// 取消loading
						this.msgLoad = false
						const newMessage = {
							my: false,
							msg: '',
							initTime: res.data.date
						};
						this.msgList.push(newMessage);
						this.msgGo();
						// 使用typeWriter效果逐个字符显示
						this.typeWriter(res.data.message, newMessage);
					}, 400)
				}

			},
			// 不建议输入框聚焦时操作此动画
			ckAdd() {
				if (!this.showTow) {
					this.upTowmn(-180, 350)
				} else {
					this.upTowmn(0, 200)
				}
				this.showTow = !this.showTow
			},
			hideKey() {
				uni.hideKeyboard()
			},
			// 拉起/收回附加栏
			upTowmn(x, t) {

				var animation = uni.createAnimation({
					duration: t,
					timingFunction: 'ease',
				})

				this.animation = animation

				animation.translateY(x).step()

				this.animationData = animation.export()
			},
			typeWriter(text, messageObj) {
				let index = 0;
				const speed = 20;
				const addCharacter = () => {
					if (index < text.length) {
						messageObj.msg += text.charAt(index);
						index++;
						setTimeout(addCharacter, speed);
					} else {
						this.msgGo();
					}
				};
				addCharacter();
			},

		}
	}
</script>

<style lang="scss" scoped>
	@import "./css/icon.css";
	@import "./css/main.css";
	@import "./css/index-app.css";

	.chatBox {
		padding: 8px 14px;
		border-radius: 35rpx;
		background-color: #fff;
		box-shadow: 0px 2px 5px 0px #DAE3F4;
		border-radius: 6px;
		font-size: 12px;
		position: relative;

		text {
			color: #000;
			word-break: break-all;

		}
	}

	.initTime {
		background: rgba(207, 207, 207, 0.2);
		border-radius: 20px;
		width: auto;
		padding: 2px 8px;
		color: #000;
		font-size: 12px;
	}

	.page {
		background-color: #F8FAFE;
	}

	.bottom-dh-char {
		background: #FFFFFF;
		box-shadow: 0px -4px 10px 0px rgba(218, 227, 244, 0.2);
		border-radius: 0px 0px 0px 0px;
		width: 750rpx;
		height: 110rpx;
	}

	.center-box {
		width: 720rpx;
		padding-left: 25rpx;
	}

	.hui-box {
		width: 750rpx;
		height: 100%;

	}

	.dh-input {
		width: 80%;
		height: 33px;
		border-radius: 6px;
		padding-left: 15rpx;
		background-color: transparent !important;
		border: 1px solid #EBEBEB;
	}

	.box-normal {
		width: 750rpx;
		height: 180px;
		background-color: #FFFFFF;
	}

	.tb-text view {
		font-size: 65rpx;
	}

	.tb-text text {
		font-size: 25rpx;
		color: #737373;
	}

	.chat-img {
		border-radius: 50%;
		width: 100rpx;
		height: 100rpx;
		background-color: #f7f7f7;
	}

	.padding-chat {
		padding: 17rpx 20rpx;
	}

	.tb-nv {
		width: 50rpx;
		height: 50rpx;
	}
</style>