import PropTypes from '../_util/vue-types'
import classNames from 'classnames'
import VcCheckbox from '../vc-checkbox'
import { getOptionProps, getAttrs } from '../_util/props-util'
function noop () {}

export default {
  inheritAttrs: false,
  name: 'ACheckbox',
  props: {
    prefixCls: {
      default: 'ant-checkbox',
      type: String,
    },
    defaultChecked: PropTypes.bool,
    checked: PropTypes.bool,
    disabled: PropTypes.bool,
    isGroup: Boolean,
    value: PropTypes.any,
    name: String,
    id: String,
    indeterminate: Boolean,
    type: PropTypes.string.def('checkbox'),
    autoFocus: Boolean,
  },
  model: {
    prop: 'checked',
  },
  inject: {
    checkboxGroupContext: { default: null },
  },
  methods: {
    handleChange (event) {
      const targetChecked = event.target.checked
      this.$emit('input', targetChecked)
      this.$emit('change', event)
    },
    focus () {
      this.$refs.vcCheckbox.focus()
    },
    blur () {
      this.$refs.vcCheckbox.blur()
    },
  },

  render () {
    const { checkboxGroupContext: checkboxGroup, $listeners, $slots } = this
    const props = getOptionProps(this)
    const children = $slots.default
    const { mouseenter = noop, mouseleave = noop, ...restListeners } = $listeners
    const {
      prefixCls,
      indeterminate,
      ...restProps
    } = props
    const checkboxProps = { props: { ...restProps, prefixCls }, on: restListeners, attrs: getAttrs(this) }
    if (checkboxGroup) {
      checkboxProps.on.change = (...args) => {
        this.$emit('change', ...args)
        checkboxGroup.toggleOption({ label: children, value: props.value })
      }
      checkboxProps.props.checked = checkboxGroup.sValue.indexOf(props.value) !== -1
      checkboxProps.props.disabled = props.disabled || checkboxGroup.disabled
    } else {
      checkboxProps.on.change = this.handleChange
    }
    const classString = classNames({
      [`${prefixCls}-wrapper`]: true,
      [`${prefixCls}-wrapper-checked`]: checkboxProps.props.checked,
      [`${prefixCls}-wrapper-disabled`]: checkboxProps.props.disabled,
    })
    const checkboxClass = classNames({
      [`${prefixCls}-indeterminate`]: indeterminate,
    })
    return (
      <label
        class={classString}
        onMouseenter={mouseenter}
        onMouseleave={mouseleave}
      >
        <VcCheckbox
          {...checkboxProps}
          class={checkboxClass}
          ref='vcCheckbox'
        />
        {children !== undefined && <span>{children}</span>}
      </label>
    )
  },
}