<template>
	<view class="tui-notice__bar" :class="{'tui-notice__fixed':isFixed}"
		:style="{backgroundColor:backgroundColor,paddingTop:padding[0] || 0,paddingRight:padding[1]||0,paddingBottom:padding[2] || padding[0]||0,paddingLeft:padding[3] || padding[1]||0,height:scrollable || single?height+'rpx':'auto',top:isFixed?0:'auto'}"
		@click="onClick">
		<view class="tui-notice__shrink" @tap.stop="leftClick" v-if="isLeft">
			<slot name="left"></slot>
		</view>
		<view class="tui-notice__wrap" :class="{'tui-notice__wrap-scroll':scrollable}"
			:style="{height:scrollable&& !isNvue?size+'rpx':'auto'}" ref="tui_notice_box">
			<view :id="elId_box"
				:class="{'tui-notice__content':scrollable,'tui-notice__content-single':!scrollable && single}">
				<text ref="animationEle" class="tui-notice__text" :id="elId"
					:style="{color:color,fontSize:size+'rpx',lineHeight:scrollable && !isNvue?size+'rpx':'normal',fontWeight:bold?'bold':'',width:wrapWidth+'px', 'animationDuration': animationDuration,'-webkit-animationDuration': animationDuration,animationPlayState: webviewHide?'paused':animationPlayState,'-webkit-animationPlayState':webviewHide?'paused':animationPlayState, animationDelay: animationDelay, '-webkit-animationDelay':animationDelay}"
					:class="{'tui-notice__single':!scrollable && single,'tui-notice__scrollable':scrollable}">{{content}}</text>
			</view>
		</view>
		<view class="tui-notice__shrink" @tap.stop="rightClick" v-if="isRight">
			<slot name="right"></slot>
		</view>
	</view>
</template>

<script>
	// #ifdef APP-NVUE
	const dom = weex.requireModule('dom');
	const animation = weex.requireModule('animation');
	// #endif
	export default {
		name: "tui-notice-bar",
		props: {
			//通告栏高度
			height: {
				type: [Number, String],
				default: 72
			},
			content: {
				type: String,
				default: ''
			},
			//字体大小 rpx
			size: {
				type: [Number, String],
				default: 28
			},
			color: {
				type: String,
				default: '#ff7900'
			},
			bold: {
				type: Boolean,
				default: false
			},
			backgroundColor: {
				type: String,
				default: '#fff8d5'
			},
			//scrollable为false时使用,['20rpx','30rpx','20rpx','30rpx']=>[上，右，下，左],为了兼容nvue
			padding: {
				type: Array,
				default () {
					return []
				}
			},
			//是否单行
			single: {
				type: Boolean,
				default: false
			},
			//是否滚动，添加后控制单行效果取消
			scrollable: {
				type: Boolean,
				default: false
			},
			//每秒滚动速度（距离） 默认 100px/s
			speed: {
				type: Number,
				default: 100
			},
			//backwards: 动画从头开始播；forwards：动画从结束点开始播
			activeMode: {
				type: String,
				default: 'backwards'
			},
			//是否需要左侧slot内容
			isLeft: {
				type: Boolean,
				default: false
			},
			//是否需要右侧slot内容
			isRight: {
				type: Boolean,
				default: false
			},
			//是否固定在顶部
			isFixed: {
				type: Boolean,
				default: false
			},
			//isFixed为true时top值
			top: {
				type: String
					// #ifdef H5
					,
				default: '44px'
					// #endif
					// #ifndef H5
					,
				default: '0'
				// #endif
			},
			//自定义参数
			params: {
				type: [Number, String],
				default: 0
			}
		},
		data() {
			const elId = `tui_${Math.ceil(Math.random() * 10e5).toString(36)}`
			const elId_box = `tui_${Math.ceil(Math.random() * 10e5).toString(36)}`
			let isNvue = false;
			// #ifdef APP-NVUE
			isNvue = true;
			// #endif
			return {
				elId: elId,
				elId_box: elId_box,
				noticeWidth: 0,
				boxWidth: 0,
				wrapWidth: '',
				webviewHide: false,
				// #ifdef APP-NVUE
				stopAnimation: false,
				// #endif
				isNvue: isNvue,
				animationDuration: 'none',
				animationPlayState: 'paused',
				animationDelay: '0s'
			};
		},
		mounted() {
			// #ifdef APP-PLUS
			let pages = getCurrentPages();
			let page = pages[pages.length - 1];
			let currentWebview = page.$getAppWebview();
			currentWebview.addEventListener('hide', () => {
				this.webviewHide = true
			})
			currentWebview.addEventListener('show', () => {
				this.webviewHide = false
			})
			// #endif
			this.$nextTick(() => {
				this.initAnimation()
			})
		},
		watch: {
			scrollable(val) {
				if (val) {
					this.$nextTick(() => {
						this.initAnimation()
					})
				}
			},
			content(val) {
				this.$nextTick(() => {
					this.initAnimation()
				})
			}
		},
		// #ifdef APP-NVUE
		beforeDestroy() {
			this.stopAnimation = true
		},
		// #endif
		methods: {
			initAnimation() {
				if (!this.content || this.content == '') return;
				if (this.scrollable) {
					// #ifndef APP-NVUE
					let query = [],
						boxWidth = 0,
						noticeWidth = 0;
					let noticeQuery = new Promise((resolve, reject) => {
						uni.createSelectorQuery()
							// #ifndef MP-ALIPAY
							.in(this)
							// #endif
							.select(`#${this.elId}`)
							.boundingClientRect()
							.exec(ret => {
								this.noticeWidth = ret[0].width
								resolve()
							})
					})
					if (this.activeMode === 'forwards') {
						let boxQuery = new Promise((resolve, reject) => {
							uni.createSelectorQuery()
								// #ifndef MP-ALIPAY
								.in(this)
								// #endif
								.select(`#${this.elId_box}`)
								.boundingClientRect()
								.exec(ret => {
									this.boxWidth = ret[0].width
									resolve()
								})
						})
						query.push(boxQuery)
					}
					query.push(noticeQuery)
					Promise.all(query).then(() => {
						this.animationDuration = `${this.noticeWidth / this.speed}s`
						if (this.activeMode === 'forwards') {
							this.animationDelay = `-${this.boxWidth / this.speed}s`
						}
						setTimeout(() => {
							this.animationPlayState = 'running'
						}, 1000)
					})
					// #endif
					// #ifdef APP-NVUE
					dom.getComponentRect(this.$refs['animationEle'], (res) => {
						let winWidth = uni.getSystemInfoSync().windowWidth
						this.noticeWidth = res.size.width
						animation.transition(this.$refs['animationEle'], {
							styles: {
								transform: `translateX(-${winWidth}px)`
							},
							duration: 0,
							timingFunction: 'linear',
							delay: 0
						}, () => {
							if (!this.stopAnimation) {
								animation.transition(this.$refs['animationEle'], {
									styles: {
										transform: `translateX(-${this.noticeWidth}px)`
									},
									timingFunction: 'linear',
									duration: (this.noticeWidth - winWidth) / this.speed * 1000,
									delay: 1000
								}, () => {
									if (!this.stopAnimation) {
										this.loopAnimation()
									}
								});
							}
						});
					})
					// #endif
				}
				// #ifdef APP-NVUE
				if (!this.scrollable && this.single) {
					dom.getComponentRect(this.$refs['tui_notice_box'], (res) => {
						this.wrapWidth = res.size.width
					})
				}
				// #endif
			},
			loopAnimation() {
				// #ifdef APP-NVUE
				animation.transition(this.$refs['animationEle'], {
					styles: {
						transform: `translateX(0)`
					},
					duration: 0
				}, () => {
					if (!this.stopAnimation) {
						animation.transition(this.$refs['animationEle'], {
							styles: {
								transform: `translateX(-${this.noticeWidth}px)`
							},
							duration: this.noticeWidth / this.speed * 1000,
							timingFunction: 'linear',
							delay: 0
						}, () => {
							if (!this.stopAnimation) {
								this.loopAnimation()
							}
						});
					}
				});
				// #endif
			},
			onClick() {
				this.$emit('click', {
					params: this.params
				})
			},
			leftClick() {
				this.$emit('leftClick', {
					params: this.params
				})
			},
			rightClick() {
				this.$emit('rightClick', {
					params: this.params
				})
			}
		}
	}
</script>

<style scoped>
	.tui-notice__bar {
		/* #ifndef APP-NVUE */
		display: flex;
		width: 100%;
		box-sizing: border-box;
		/* #endif */
		flex-direction: row;
		align-items: center;
	}

	.tui-notice__fixed {
		position: fixed;
		left: 0;
		z-index: 100;
	}

	.tui-notice__shrink {
		/* #ifndef APP-NVUE */
		flex-shrink: 0;
		display: flex;
		align-items: center;
		justify-content: center;
		/* #endif */

		/* #ifdef H5 */
		cursor: pointer;
		/* #endif */
	}

	.tui-notice__wrap {
		flex: 1;
		flex-direction: column;
		overflow: hidden;
	}

	.tui-notice__wrap-scroll {
		flex-direction: row;
	}

	/* #ifndef APP-NVUE */
	.tui-notice__wrap-scroll {
		position: relative;
	}

	/* #endif */

	.tui-notice__content {
		/* #ifdef APP-NVUE */
		flex: 0;
		/* #endif */
		/* #ifndef APP-NVUE */
		flex: 1;
		display: block;
		overflow: hidden;
		/* #endif */

	}

	.tui-notice__text {
		/* #ifndef APP-NVUE */
		word-break: break-all;
		/* #endif */
	}

	.tui-notice__content-single {
		/* #ifndef APP-NVUE */
		display: flex;
		flex: none;
		width: 100%;
		justify-content: center;
		/* #endif */
	}

	.tui-notice__single {
		/* #ifdef APP-NVUE */
		lines: 1;
		/* #endif */
		/* #ifndef APP-NVUE */
		display: block;
		width: 100%;
		white-space: nowrap;
		/* #endif */
		flex-direction: row;
		overflow: hidden;
		text-overflow: ellipsis;
	}

	.tui-notice__scrollable {
		/* #ifdef APP-NVUE */
		lines: 1;
		padding-left: 750rpx;
		/* #endif */
		/* #ifndef APP-NVUE */
		position: absolute;
		display: block;
		white-space: nowrap;
		padding-left: 101%;
		animation: notice 10s 0s linear infinite both;
		animation-play-state: paused;
		-webkit-backface-visibility: hidden;
		-webkit-perspective: 1000;
		/* #endif */
	}

	@keyframes notice {
		100% {
			transform: translate3d(-100%, 0, 0);
		}
	}
</style>
