<template name="dever-seat">
	<view class="w-100 grace-body">
		<view class="bg-f1">
			<movable-area :style="'height:'+(seatRow*40+350)+'rpx;width: 100vw;tops:'+(rpxNum*132)+'px'" class="pt-f left-0">
				<movable-view :style="'width: 100vw;height:'+(seatRow*40+350)+'rpx;'" :inertia="true" :scale="true" :scale-min="0.95"
				 :scale-max="2" direction="all" @change="onMove" @scale="onScale">
					 <picker @change="openHall" :value="hall_index" :range="hall_data" v-if="hall_state">
						<view class="Stage dp-f jc-c ai-c fz-22 color-333" style="margin-top:10rpx">
							{{hall_data[hall_index]}}
						</view>
					 </picker>
					<view style="height: 30rpx;margin-top: 30rpx;margin-bottom: 30rpx;" class="m-0-a mt-48 dp-f jc-c ai-c fz-22 color-999 br-5">{{item.name}}</view>
					<view v-for="(item,index) in seatArray" :key="index" class="dp-f jc-c mt-20" :style="'width:'+boxWidth+'px;height:'+seatSize+'px'">
						<view v-for="(seat,col) in item" :key="col" class="dp-ib" :style="'width:'+seatSize+'px;height:'+seatSize+'px'"
						 @click="handleChooseSeat(index,col)">
							<image v-if="seat.type===0" class="w-100 h-100" src="@/static/seat/unselected.png" mode="aspectFit"></image>
							<image v-else-if="seat.type===1" class="w-100 h-100" src="@/static/seat/selected.png" mode="aspectFit" style="width:40rpx;height:40rpx;"></image>
							<image v-else-if="seat.type===2" class="w-100 h-100" :id="seat.TipsId" src="@/static/seat/bought.png" mode="aspectFit" style="width:40rpx;height:40rpx;" :src="seat.User.avatar" @click="showTips(seat.TipsId, seat.Id, seat.Tips, seat.SeatCode, seat.User)"></image>
						</view>
					</view>
					<view class="pt-f bg-line br-15 over-h" :style="'left: '+(10-moveX/scale)+'px;top:112rpx;width:30rpx;'">
						<view class="w-100 dp-f ai-c jc-c fz-22 color-fff" :style="'height:'+seatSize+'px;margin-top:20rpx;'" v-for="(m,mindex) in mArr"
						 :key="mindex">{{m}}</view>
						<view :style="'height: 20rpx;'"></view>
					</view>

				</movable-view>
			</movable-area>
			<view class="pt-f bottom-bar left-0 dp-f fd-cr z1000">
				<view class="bg-white p-all-32" style="width: 750rpx;">
					<view class="dp-f ai-c jc-c fz-28 color-333 mb-20" v-if="SelectNum===0">
						推荐选座
						<view style="width: 106rpx;height: 60rpx;" class="b-1 br-5 dp-f ai-c jc-c fz-28 ml-20" v-for="(n,numindex) in 4"
						 :key="n" @click="smartChoose(numindex+1)">
							{{numindex+1}}人
						</view>
					</view>
					<view class="dp-f ai-c fw-w fz-28 color-333 mb-20" v-if="SelectNum>0">
						<text>已选</text>
						<view class="p-all-10 b-1 br-5 dp-f ai-c jc-c fz-28 ml-20" v-for="(optItem,optindex) in optArr" :key="optindex">
							{{optItem.RowNum+'排'+optItem.ColumnNum+'座'}}
						</view>
					</view>
					<view style="width: 566rpx;height: 90rpx;" class="dp-f jc-c ai-c br-10 fz-34 color-fff" :class="SelectNum>0?'bg-red-1':'bg-unbtn'"
					 @click="buySeat">
						<text>{{SelectNum>0?('￥ '+aPrice+' 确认座位'):'选择座位后才能观看'}}</text>
					</view>
				</view>
			</view>
		</view>
		<view v-if="show">
			<dever-publish :title="title" :is_upload="false" @hideModal="hideTips" @getRefresh="getRefresh" :type="seat_table" :type_id="seat_table_id" :api="api" :playtime="playtime"></dever-publish>
		</view>
	</view>
</template>
<script>
	import deverPublish from '@/lib/dever/components/publish.vue';
	export default {
		props: {
			type : {
				type : String,
				value : null
			},
			type_id : {
				type : String,
				value : null
			},
			item : {
				type    : Object,
				value	: null
			},
			index : 0
		},
		components:{
			deverPublish
		},
		data() {
			return {
				cycle : false,
				scaleMin:1,//h5端为解决1无法缩小问题，设为0.95
				boxWidth: 400, //屏幕宽度px
				space: ' ', //空格
				seatArray: [], //影院座位的二维数组,-1为非座位，0为未购座位，1为已选座位(绿色),2为已购座位(红色),一维行，二维列
				seatRow: 0, //影院座位行数
				seatCol: 0, //影院座位列数
				seatSize: 0, //座位尺寸
				SelectNum: 0, //选择座位数
				moveX: 0, //水平移动偏移量
				scale: 1, //放大倍数
				minRow: 0, //从第几行开始排座位
				minCol: 0, //从第几列开始排座位
				showTis: true, //显示选座提示
				seatList: [], //接口获取的原始位置
				mArr: [], //排数提示
				optArr: [], //选中的座位数组。
				isWXAPP:false,
				price : 1,
				fetch : {
					user : {},
					hall : 1,
					disabled : true,
				},
				show : false,
				api : 'app/community/?l=api.addTips',
				title : '发布聊天泡泡',
				seat_table : '',
				seat_table_id : 0,
				tipsData : {},
				page : 1,
				play : false,
				playtime : 0,
				tipsTimeData : {},
				hall_state : false,
				hall_data : [],
				hall_index : 0,
				//手动停止播放
				setStop : false,
				
			};
		},
		computed: {
			aPrice() {
				if (this.fetch.disabled) {
					return (this.SelectNum - 1) * this.price
				} else {
					return (this.SelectNum) * this.price
				}
			},
			rpxNum() {
				return this.boxWidth / 750
			},
			pxNum() {
				return 750 / this.boxWidth
			},
		},
		mounted() {
			if (this.item.title) {
				this.title = this.item.title;
			}

			this.price = parseFloat(this.item.seat_price);
			this.setHall();
			//获取宽度
			uni.getSystemInfo({
				success: function(e) {
					this.boxWidth = e.screenWidth
					//#ifdef H5
					this.scaleMin = 0.95
					//#endif
				}
			})
			this.page = 1;
			this.initData(this.hall)
		},
		methods: {
			setHall : function() {
				var default_hall = this.Dever.data('hall_' + this.item.id);
				if (!default_hall) {
					default_hall = 1;
				} else {
					default_hall = parseInt(default_hall);
				}
				
				var hall = parseInt(this.item.hall_num);
				this.hall_index = default_hall - 1;
				this.hall = default_hall;
				var hall_state = false;
				for (var i=0; i<hall ; i++) {
					this.hall_data[i] = (i+1) + '号厅';
					if (this.hall_index == i) {
						hall_state = true;
					}
				}
				if (!hall_state) {
					this.hall_index = 0;
					this.hall = 1;
				}
				this.hall_state = true;
			},
			openHall : function(e) {
				this.hall_index = e.detail.value;
				this.hall = parseInt(this.hall_index+1);
				this.Dever.data('hall_' + this.item.id, this.hall);
				this.page = 1;
				this.initData(this.hall);
			},
			showTips : function(tipsid, id, tips, code, user) {
				if (!this.play && this.playtime == 0) {
					this.Dever.alert('播放时才能发送消息');
					return;
				}
				this.seat_table = tips;
				this.seat_table_id = id;
				this.show = true;
				
				if (this.play) {
					this.setStop = true;
					this.$emit('stop');
				}
			},
			hideTips : function() {
				this.show = false;
				if (this.setStop == true) {
					this.$emit('start');
					this.setStop = false;
				}
			},
			setDisabled : function() {
				this.$emit('setDisabled', this.fetch.disabled);
			},
			tips : function(id, content) {
				var id = '#tips_' + this.type_id + '_' + id;
				if (this.tipsData[id]) {
					this.Dever.layer.close(this.tipsData[id]);
				}
				this.tipsData[id] = this.Dever.layer.tips(content, id, {
				  tips: [1, '#0FA6D8'],
				  tipsMore: true
				});
			},
			getRefresh : function(cate_id, type, type_id, content) {
				this.tips(type_id, content);
				if (!this.tipsTimeData[this.playtime]) {
					this.tipsTimeData[this.playtime] = [];
				}
				this.tipsTimeData[this.playtime].push({type_id:type_id,content:content});
				this.hideTips();
			},
			
			initData: function(hall) {
				var self = this;
				this.cycle && (clearInterval(this.cycle));
				this.Dever.get(this, 'app/user/?l=api.seat', {code:this.Dever.config.code,noloading:1, content_id : this.type_id, hall : hall}, function(t) {
					self.setDisabled();
					let arr = t.seat
					//数据说明：SeatCode座位编号，RowNum-行号，ColumnNum-纵号，YCoord-Y坐标，XCoord-X坐标，Status-状态
					let row = 0
					let col = 0
					let minCol = parseInt(arr[0].XCoord)
					let minRow = parseInt(arr[0].YCoord)
					for (let i of arr) {
						minRow = parseInt(i.YCoord) < minRow ? parseInt(i.YCoord) : minRow
						minCol = parseInt(i.XCoord) < minCol ? parseInt(i.XCoord) : minCol
						row = parseInt(i.YCoord) > row ? parseInt(i.YCoord) : row
						col = parseInt(i.XCoord) > col ? parseInt(i.XCoord) : col
						self.seat_table = i.Tips
					}
					self.seatList = arr
					self.seatRow = row - minRow + 1
					self.seatCol = col - minCol + 3
					self.minRow = minRow
					self.minCol = minCol - 1
					self.initSeatArray()
					self.tipsTimeData = {};
					self.getData();
				});
				
			},
			start : function() {
				this.play = true;
			},
			stop : function() {
				this.play = false;
				this.Dever.layer.closeAll();
			},
			time : function(time) {
				this.playtime = time;
				//console.info(time);
				if (this.tipsTimeData[time]) {
					this.handle(this.tipsTimeData[time]);
				}
			},
			// 获取聊天历史数据
			getData : function() {
				var self = this;
				this.Dever.get(this, 'app/community/?l=api.tips', {code:this.Dever.config.code,noloading:1, type:this.seat_table, pg:this.page}, function(t) {
					var arr = Object.keys(t.info);
					if (arr.length > 0) {
						self.save(t.info);
					}
				});
			},
			save : function(data) {
				this.tipsTimeData = Object.assign(this.tipsTimeData, data);
				this.page++;
				this.getData();
			},
			//执行聊天泡泡
			handle : function(items) {
				if (!this.play) {
					return;
				}
				this.cycle && (clearInterval(this.cycle));
				var i = 0;
				var len = items.length;
				this.tips(items[i]['type_id'], items[i]['content']);
				i++;
				this.cycle = setInterval(() => {
					var time = 5;
					// #ifndef H5
					time = Math.ceil(Math.floor(Math.random() * (this.maxTime - this.minTime + 1) + this.minTime));
					// #endif
					if (!this.play) {
						clearInterval(this.cycle);
					} else if (i < len) {
						this.tips(items[i]['type_id'], items[i]['content']);
						i++;
					} else {
						clearInterval(this.cycle);
					}
				}, 1000)
			},
			//初始座位数组
			initSeatArray: function() {
				let seatArray = Array(this.seatRow).fill(0).map(() => Array(this.seatCol).fill({
					type: -1,
					SeatCode: '',
					RowNum: '',
					ColumnNum: ''
				}));
				this.seatArray = seatArray
				this.seatSize = this.boxWidth > 0 ?
					parseInt(parseInt(this.boxWidth, 10) / (this.seatCol + 1), 10) :
					parseInt(parseInt(414, 10) / (this.seatCol + 1), 10)
				this.initNonSeatPlace();
			},
			//初始化是座位的地方
			initNonSeatPlace: function() {
				let seat = this.seatList.slice()
				let arr = this.seatArray.slice()
				for (let num in seat) {
					let status = 2 //-1为非座位，0为未购座位，1为已选座位(绿色),2为已购座位(红色)
					if (seat[num].Status === 0) {
						status = 0
					} else if (seat[num].Status === -1) {
						status = -1
					}
					arr[parseInt(seat[num].YCoord) - this.minRow][parseInt(seat[num].XCoord) - this.minCol] = {
						type: status,
						SeatCode: seat[num].SeatCode,
						RowNum: seat[num].RowNum,
						ColumnNum: seat[num].ColumnNum,
						User: seat[num].User,
						Id : seat[num].Id,
						Tips : seat[num].Tips,
						TipsId : 'tips_' + this.type_id + '_' + seat[num].Id
					}
				}
				this.seatArray = arr.slice()
				let mArr = []
				for (let i in arr) {
					let m = ''
					for (let n of arr[i]) {
						if (n.SeatCode) {
							m = n.RowNum
						}
					}
					if (m) {
						mArr.push(m)
					} else {
						mArr.push('')
					}
				}
				this.mArr = mArr
			},
			//放大缩小事件
			onScale: function(e) {
				this.showTis = false
				// this.moveX=-e.detail.x
				let w = this.boxWidth * 0.5
				let s = 1 - e.detail.scale
				this.moveX = w * s
				this.scale = e.detail.scale
				if (s > 0 || s === 0) {
					this.showTis = true
				}
			},
			//移动事件
			onMove: function(e) {
				this.showTis = false
				this.moveX = e.detail.x
			},
			//重置座位
			resetSeat: function() {
				this.SelectNum = 0
				this.optArr = []
				//将所有已选座位的值变为0
				let oldArray = this.seatArray.slice();
				for (let i = 0; i < this.seatRow; i++) {
					for (let j = 0; j < this.seatCol; j++) {
						if (oldArray[i][j].type === 1) {
							oldArray[i][j].type = 0
						}
					}
				}
				this.seatArray = oldArray;
			},
			//选定且购买座位
			buySeat: function() {
				if (this.SelectNum === 0) {
					return
				}
				let oldArray = [];
				for (let i = 0; i < this.seatRow; i++) {
					for (let j = 0; j < this.seatCol; j++) {
						if (this.seatArray[i][j].type === 1) {
							oldArray.push(this.seatArray[i][j].SeatCode)
						}
					}
				}
				
				this.buy(oldArray);
			},
			
			buy : function(seat) {
				seat = seat.join(',');
				var self = this;
				this.Dever.confirm('确定购买座位吗？第一个座位免费哦~', function() {
					var data = {};
					data.code = self.Dever.config.code;
					data.seat = seat;
					data.content_id = self.item.content_id;
					data.type_id = self.type_id;
					data.type = self.type;
					data.index = self.index;
					var location = 'dream/view?code={code}&name=' + self.Dever.config.name;
					data.location = location;
					data.refer = self.Dever.host + '/' + location;
					self.Dever.post('app/user/?l=pay.seat', data, function(t) {
						self.Dever.pay(t, t.location, '支付失败');
					});
					
					/*
					self.Dever.post('app/user/?l=api.seatSave', {code:self.Dever.config.code, seat:seat, content_id : self.type_id}, function(t) {
						self.Dever.alert('选座成功，您可以点击头像发布内容~');
						self.resetSeat();
						self.initData(self.hall);
					});
					*/
				})
				
			},
			//处理座位选择逻辑
			handleChooseSeat: function(row, col) {
				let seatValue = this.seatArray[row][col].type;
				let newArray = this.seatArray;
				//如果是已购座位，直接返回
				if (seatValue === 2 || seatValue === -1) return
				//如果是已选座位点击后变未选
				if (seatValue === 1) {
					newArray[row][col].type = 0
					this.SelectNum--
					this.getOptArr(newArray[row][col], 0)
				} else if (seatValue === 0) {
					if (this.SelectNum >= 4) {
						this.Dever.alert('一次最多只能购买4个座位');
						return;
					}
					newArray[row][col].type = 1
					this.SelectNum++
					this.getOptArr(newArray[row][col], 1)
				}
				//必须整体更新二维数组，Vue无法检测到数组某一项更新,必须slice复制一个数组才行
				this.seatArray = newArray.slice();
			
			},
			//处理已选座位数组
			getOptArr: function(item, type) {
				let optArr = this.optArr
				if (type === 1) {
					optArr.push(item)
				} else if (type === 0) {
					let arr = []
					optArr.forEach(v => {
						if (v.SeatCode !== item.SeatCode) {
							arr.push(v)
						}
					})
					optArr = arr
				}
				this.optArr = optArr.slice()
			},
			//推荐选座,参数是推荐座位数目，
			smartChoose: function(num) {
				//console.log('num===', num)
				// 先重置
				this.resetSeat()
				//找到影院座位水平垂直中间位置的后一排
				let rowStart = parseInt((this.seatRow - 1) / 2, 10) + 1;
				//先从中间排往后排搜索
				let backResult = this.searchSeatByDirection(rowStart, this.seatRow - 1, num);
				if (backResult.length > 0) {
					this.chooseSeat(backResult);
					this.SelectNum += num
					return
				}
				//再从中间排往前排搜索
				let forwardResult = this.searchSeatByDirection(rowStart - 1, 0, num);
				if (forwardResult.length > 0) {
					this.chooseSeat(forwardResult);
					this.SelectNum += num
					return
				}
				//提示用户无合法位置可选
				alert('无合法位置可选!')
			
			},
			
			//搜索函数,参数:fromRow起始行，toRow终止行,num推荐座位数
			searchSeatByDirection: function(fromRow, toRow, num) {
				/*
				 * 推荐座位规则
				 * (1)初始状态从座位行数的一半处的后一排的中间开始向左右分别搜索，取离中间最近的，如果满足条件，
				 *    记录下该结果离座位中轴线的距离，后排搜索完成后取距离最小的那个结果座位最终结果，优先向后排进行搜索，
				 *    后排都没有才往前排搜，前排逻辑同上
				 *
				 * (2)只考虑并排且连续的座位，不能不在一排或者一排中间有分隔
				 *
				 * */

				/*
				 * 保存当前方向搜索结果的数组,元素是对象,result是结果数组，offset代表与中轴线的偏移距离
				 * {
				 *   result:Array([x,y])
				 *   offset:Number
				 * }
				 *
				 */
				let currentDirectionSearchResult = [];

				let largeRow = fromRow > toRow ? fromRow : toRow,
					smallRow = fromRow > toRow ? toRow : fromRow;

				for (let i = smallRow; i <= largeRow; i++) {
					//每一排的搜索,找出该排里中轴线最近的一组座位
					let tempRowResult = [],
						minDistanceToMidLine = Infinity;
					for (let j = 0; j <= this.seatCol - num; j++) {
						//如果有合法位置
						if (this.checkRowSeatContinusAndEmpty(i, j, j + num - 1)) {
							//计算该组位置距离中轴线的距离:该组位置的中间位置到中轴线的距离
							let resultMidPos = parseInt((j + num / 2), 10);
							let distance = Math.abs(parseInt(this.seatCol / 2) - resultMidPos);
							//如果距离较短则更新
							if (distance < minDistanceToMidLine) {
								minDistanceToMidLine = distance;
								//该行的最终结果
								tempRowResult = this.generateRowResult(i, j, j + num - 1)
							}
						}
					}
					//保存该行的最终结果
					currentDirectionSearchResult.push({
						result: tempRowResult,
						offset: minDistanceToMidLine
					})
				}

				//处理后排的搜索结果:找到距离中轴线最短的一个
				//注意这里的逻辑需要区分前后排，对于后排是从前往后，前排则是从后往前找
				let isBackDir = fromRow < toRow;
				let finalReuslt = [],
					minDistanceToMid = Infinity;
				if (isBackDir) {
					//后排情况,从前往后
					currentDirectionSearchResult.forEach((item) => {
						if (item.offset < minDistanceToMid) {
							finalReuslt = item.result;
							minDistanceToMid = item.offset;
						}
					});
				} else {
					//前排情况，从后往前找
					currentDirectionSearchResult.reverse().forEach((item) => {
						if (item.offset < minDistanceToMid) {
							finalReuslt = item.result;
							minDistanceToMid = item.offset;
						}
					})
				}

				//直接返回结果
				return finalReuslt
			},

			/*辅助函数，判断每一行座位从i列到j列是否全部空余且连续
			 *
			 */
			checkRowSeatContinusAndEmpty: function(rowNum, startPos, endPos) {
				let isValid = true;
				for (let i = startPos; i <= endPos; i++) {
					if (this.seatArray[rowNum][i].type !== 0) {
						isValid = false;
						break;
					}
				}
				return isValid
			},
			//辅助函数：返回每一行的某个合理位置的座位数组
			generateRowResult: function(row, startPos, endPos) {
				let result = [];
				for (let i = startPos; i <= endPos; i++) {
					result.push([row, i])
				}
				return result
			},
			//辅助函数:智能推荐的选座操作
			chooseSeat: function(result) {
				let opt = this.optArr
				let oldArray = this.seatArray.slice();
				for (let i = 0; i < result.length; i++) {
					//选定座位
					oldArray[result[i][0]][result[i][1]].type = 1
					this.optArr.push(oldArray[result[i][0]][result[i][1]])
				}
				this.seatArray = oldArray;
			},
		}
	}
</script>

<style lang="scss" scoped>
	.main {
		position: relative;
	}
	.p-all-10{
		padding: 10rpx;
	}
	.ml-10 {
		margin-left: 10rpx;
	}

	.m-0-10 {
		margin: 0 10rpx;
	}

	.bg-unbtn {
		background-color: #f9abb3;
	}

	.bg-red-1 {
		background-color: #F45664;
	}

	.br-10 {
		border-radius: 10rpx;
	}

	.ml-20 {
		margin-left: 20rpx;
	}

	.mb-20 {
		margin-bottom: 20rpx;
	}

	.p-all-32 {
		padding: 32rpx;
	}

	.fd-cr {
		flex-direction: column-reverse;
		/* 主轴方向从下到上,默认从左到右 */
	}

	.bottom-bar {
		bottom: var(--window-bottom);
	}

	.color-fff {
		color: #fff
	}

	.br-15 {
		border-radius: 15rpx;
	}

	.over-h {
		overflow: hidden;
	}

	.dp-ib {
		display: inline-block;
	}

	.mt-20 {
		margin-top: 20rpx;
	}

	.pa-v-2 {
		/* 定位垂直对齐 */
		left: 50%;
		transform: translateX(-50%)
	}

	.b-d-1 {
		border: 1px dashed #e5e5e5;
	}

	.w-100 {
		width: 100%;
	}

	.h-100 {
		height: 100%;
	}

	.bg-f1 {
		background-color: #f1f1f1;
	}

	.h-100vh {
		height: 100vh;
	}

	.pt-f {
		position: fixed;
	}

	.left-0 {
		left: 0;
	}

	.p-0-32 {
		padding: 0 32rpx;
	}

	.pt-20 {
		padding-top: 20rpx;
	}

	.bg-white {
		background-color: #fff;
	}

	.z1000 {
		z-index: 1000;
	}

	.fz-34 {
		font-size: 34rpx;
	}

	.fw-b {
		font-weight: bold;
	}

	.mt-10 {
		margin-top: 10rpx;
	}

	.fz-28 {
		font-size: 28rpx;
	}

	.color-666 {
		color: #666666
	}

	.dp-f {
		display: flex;
	}

	.jc-c {
		justify-content: center;
	}

	.ai-c {
		align-items: center;
	}

	.fz-22 {
		font-size: 22rpx;
	}

	.color-333 {
		color: #333333
	}

	.m-0-a {
		margin: 0 auto;
	}

	.mt-48 {
		margin-top: 48rpx;
	}

	.fz-20 {
		font-size: 20rpx;
	}

	.color-999 {
		color: #999999
	}

	.b-1 {
		border: 1px solid #CCCCCC;
	}

	.br-5 {
		border-radius: 5rpx;
	}

	.Stage {
		background-color: #dddddd;
		width: 380rpx;
		height: 34rpx;
		transform: perspective(34rpx) rotateX(-10deg);
		margin: 0 auto;
	}

	.bg-line {
		background-color: rgba(0, 0, 0, 0.3);
	}

	.sel-seat {
		background: url('@/static/seat/selected.png') center center no-repeat;
		background-size: 100% 100%;
	}
	
	.unsel-seat {
		background: url('@/static/seat/unselected.png') center center no-repeat;
		background-size: 100% 100%;
	}
	
	.bought-seat {
		background: url('@/static/seat/bought.png') center center no-repeat;
		background-size: 100% 100%;
	}
</style>
