<template>
	<l-picker 
		v-model="innerValue"
		:cancelBtn="cancelBtn" 
		:cancelStyle="cancelStyle" 
		:confirmBtn="confirmBtn"
		:confirmStyle="confirmStyle" 
		:title="title" 
		:titleStyle="titleStyle" 
		:loading="loading"
		:loadingColor="loadingColor" 
		:loadingMaskColor="loadingMaskColor" 
		:loadingSize="loadingSize"
		:itemHeight="itemHeight" 
		:itemColor="itemColor" 
		:itemFontSize="itemFontSize" 
		:itemActiveColor="itemActiveColor"
		:indicatorStyle="indicatorStyle" 
		:bgColor="bgColor" 
		:groupHeight="groupHeight" 
		:radius="radius"
		:resetIndex="resetIndex" 
		:columns="innerColumns" 
		@cancel="onCancel" 
		@confirm="onConfirm" 
		@pick="onPick">
	</l-picker>
</template>

<script lang="uts" setup>
	import { PickerValue, PickerColumn, PickerColumnItem, PickerPickEvent, PickerConfirmEvent } from '../l-picker/type';
	import { CascadeProps } from './type';
	import { parseKeys, formatCascadeColumns } from './utils';
	
	const emit = defineEmits(['change', 'cancel', 'pick', 'confirm', 'update:modelValue', 'update:value'])
	const props = withDefaults(defineProps<CascadeProps>(), {
		columns: [] as PickerColumnItem[],
		loading: false,
		resetIndex: false,
		loadingSize: '64rpx'
	})
	const keys = parseKeys(props.keys)
	const innerValue = ref<PickerValue[]>(props.value ?? props.modelValue ?? props.defaultValue ?? []);
	// const innerValue = computed({
	// 	set(value : PickerValue[]) {
	// 		curValueArray.value = value;
	// 		emit('update:modelValue', value)
	// 	},
	// 	get() : PickerValue[] {
	// 		return props.value ?? props.modelValue ?? curValueArray.value
	// 	}
	// } as WritableComputedOptions<PickerValue[]>)


	const innerColumns = computed(() : PickerColumn[] => {
		return formatCascadeColumns(props.columns, keys, innerValue)
	})

	const onPick = ({ values, column, index } : PickerPickEvent) => {
		innerValue.value = [...values]
	}
	
	const onConfirm = (options : PickerConfirmEvent) => {
		emit('confirm', options)
	}
	const onCancel = () => {
		emit('cancel')
	}
	
	watchEffect(()=>{
		emit('update:modelValue', innerValue.value)
	})
	
	
</script>

<style>

</style>