<template>
	<view>
		<view class="q-switch-box" :style="{
        backgroundColor: modelValue ? activeBgColor : inActiveBgColor,
        width: width,
        height: height,
        borderRadius: `calc(${height} / 2)`,
      }" @click.stop="changeSwitch"
	  :class="{disabled:disabled}"
	  >
			<view v-show="!modelValue" class="before" :style="{
          left: `calc(${margin} * 2)`,
        }">
				<slot name="left">{{ inShowText }}</slot>
			</view>
			<!-- 圆圈 -->
			<view class="circle-inner" :style="{
          margin: margin,
          width: circleRadius,
          height: circleRadius,
          backgroundColor: '#ffffff',
          ...switchAnimation,
        }"></view>
			<view v-show="modelValue" class="after" :style="{
          right: `calc(${margin} * 2)`,
        }">
				<slot name="right">{{ showText }}</slot>
			</view>
		</view>
	</view>
</template>
<!-- 自定义Switch:自定义左右内容 -->
<script setup>
	import {
		computed,
		ref
	} from 'vue'
	const props = defineProps({
		disabled:{
			type:Boolean,
			default:false
		},
		height: {
			type: String,
			default: '40rpx',
		},
		width: {
			type: String,
			default: '78rpx',
		},
		margin: {
			type: String,
			default: '4rpx',
		},
		fontSize: {
			type: String,
			default: '32rpx',
		},
		// 激活背景色
		activeBgColor: {
			type: String,
			default: '#318AFE',
		},
		// 未激活背景色
		inActiveBgColor: {
			type: String,
			default: '#ECECEC',
		},
		// 激活文本
		showText: {
			type: String,
			default: '',
		},
		// 未激活文本
		inShowText: {
			type: String,
			default: '',
		},
		// v-modal
		modelValue: {
			type: [Boolean,Number],
			default: false,
		},
	})
	const emits = defineEmits(['update:modelValue', 'change'])
	// 修改switch值
	function changeSwitch() {
		if(props.disabled){
			return
		}
		let currentVal=props.modelValue
		let type=typeof currentVal 
		if(type==='number'){
			currentVal=currentVal===0?1:0
		}
		if(type==='boolean'){
			currentVal=!currentVal
		}
		emits('update:modelValue', currentVal)
		emits('change', currentVal)
	}
	// 圆圈半径
	let circleRadius = computed(() => {
		return `calc(((${props.height} / 2) - ${props.margin})* 2)`
	})
	// 动画效果
	let switchAnimation = computed(() => {
		let obj = {
			transition: `transform 0.3s`,
			transform: 'translateX(0)',
		}
		//激活
		if (props.modelValue) {
			let innerRadius = `((${props.height} / 2) - ${props.margin})` //圆圈半径
			let moveValue =
				`calc(${props.width} - ${props.margin} * 2 - (${innerRadius} * 2))` //偏移距离 总宽度 - 圆圈左右边距 - 圆圈宽度
			// console.log('move-value', moveValue)
			obj.transform = `translateX(${moveValue})`
		} else {
			// 未激活
			obj.transform = 'translateX(0)'
		}
		return obj
	})
</script>

<style lang="scss" scoped>
	.q-switch-box {
		display: flex;
		background-color: #eaeaea;
		position: relative;
		height: 100%;
		&.disabled{
			opacity: .5;
		}
		.circle-inner {
			border-radius: 50%;
		}

		.before {
			position: absolute;
			color: #bbbbbb;
			font-size: 28rpx;
			display: flex;
			height: 100%;
			align-items: center;
		}

		.after {
			position: absolute;
			font-size: 28rpx;
			color: #ffffff;
			display: flex;
			height: 100%;
			align-items: center;
		}
	}
</style>