<template>
	<view>
		<live-pusher id="livePusher" ref="livePusher" class="livePusher" mode="FHD" beauty="0" whiteness="0"
			device-position="back" :auto-focus="true" :muted="true" :enable-camera="true" :enable-mic="true"
			:zoom="true" :style="[{height: cameraHeight ,width:'750rpx'}]">

		</live-pusher>
		<cover-image v-if="coverImage" class="cover-image" :style="[{height:cameraHeight+'px',width:'750rpx'}]"
			:src="coverImage" />
		<view class="camera-options" :style="[{height:optionsHeight+'px'}]">
			<view class="camera-options-left camera-item">
				<image class="camera-item-image" src="/static/images/back.png" mode="scaleToFill"
					@click="handleInstruct('back')"></image>
			</view>
			<view class="camera-options-center camera-item">
				<image class="camera-item-image" src="/static/images/shutter.png" mode="scaleToFill"
					@click="handleInstruct('shutter')"></image>
			</view>
			<!-- <view class="camera-options-ritht camera-item" @click="handleInstruct('reversal')">
				<image class="camera-item-image" src="/static/images/reversal.png" mode="scaleToFill"></image>
			</view> -->
			<view class="camera-options-ritht camera-item">
				<image class="camera-item-image" src="/static/images/album.png" mode="scaleToFill"
					@click="handleInstruct('album')"></image>
			</view>
		</view>
	</view>

</template>

<script>
	// 这个组件仅限APP使用！！！
	import config from '../config.js'
	export default {
		props: {
			coverImageType: { //遮罩层的类型 （必须在config里面的定义的）
				type: String,
				default: 'portrait'
			}
		},
		data() {
			return {
				livePusher: null,
				ready: true,
				cameraHeight: '', //相机画面宽度
				optionsHeight: '', //操作台高度

				coverImage: null,
			}
		},
		mounted() {
			this.cameraHeight = uni.getSystemInfoSync().screenHeight * 0.82
			this.optionsHeight = uni.getSystemInfoSync().screenHeight * 0.18
			this.init()
			try {
				this.coverImage = config[this.coverImageType]
			} catch (e) {
				uni.showToast({
					title: '传入的coverImageType不存在',
					icon: 'none'
				})
			}
		},
		methods: {
			init() {
				this.livePusher = uni.createLivePusherContext('livePusher', this);
				setTimeout(() => {
					this.startPreview()
				}, 1000)
			},
			startPreview() {
				this.livePusher.startPreview({
					success: () => {
						console.log('相机初始化成功');
						switch (plus.os.name) {
							case 'Android':
								break;
							case 'iOS':
								this.livePusher.switchCamera()
								break
						}
					},
					fail: (err) => {
						console.log(err)
					}
				});
			},
			handleInstruct(instruct) {
				switch (instruct) {
					// 返回
					case 'back':
						this.$emit('back')
						break;
						// 快门
					case 'shutter':
						if (this.ready) {
							this.ready = false
							this.livePusher.snapshot({
								success: (res) => {
									console.log(res)
									this.ready = true
									this.$emit('getImage', res.message.tempImagePath)
								}
							})
						}
						break;
						// 反转
					case 'reversal':
						this.livePusher.switchCamera();
						break;
						// 相册
					case 'album':
						uni.chooseImage({
							count: 1, //默认9
							sizeType: ['original', 'compressed'], //可以指定是原图还是压缩图，默认二者都有
							sourceType: ['album'], //从相册选择
							success: (res) => {
								this.$emit('getImage', res.tempFilePaths[0])
							}
						})
						break;
				}
			}
		}
	}
</script>

<style scoped>
	.camera-background {
		width: 100%;
		height: 100%;
		background-color: rgba(0, 0, 0, 0.3);
	}

	.cover-image {
		position: fixed;
		top: 0;
		left: 0;
		z-index: 99;
	}

	.camera-options {
		flex-direction: row;
		align-items: center;
	}

	.camera-item {
		flex: 1;
		flex-direction: row;
		justify-content: center;
		align-items: center;
		height: 100%;
	}

	.camera-item .camera-item-image {
		width: 80rpx;
		height: 80rpx;
	}

	.camera-options-center .camera-item-image {
		width: 120rpx;
		height: 120rpx;
	}
</style>
