import TimePickerPanel from '../vc-time-picker/Panel'
import classNames from 'classnames'
import LocaleReceiver from '../locale-provider/LocaleReceiver'
import { generateShowHourMinuteSecond } from '../time-picker'
import enUS from './locale/en_US'
import { getOptionProps, initDefaultProps } from '../_util/props-util'

function getColumns ({ showHour, showMinute, showSecond, use12Hours }) {
  let column = 0
  if (showHour) {
    column += 1
  }
  if (showMinute) {
    column += 1
  }
  if (showSecond) {
    column += 1
  }
  if (use12Hours) {
    column += 1
  }
  return column
}

export default function wrapPicker (Picker, props, defaultFormat) {
  return {
    name: Picker.name,
    props: initDefaultProps(props, {
      format: defaultFormat || 'YYYY-MM-DD',
      transitionName: 'slide-up',
      popupStyle: {},
      locale: {},
      prefixCls: 'ant-calendar',
      inputPrefixCls: 'ant-input',
    }),

    mounted () {
      const { autoFocus, disabled } = this
      if (autoFocus && !disabled) {
        this.$nextTick(() => {
          this.focus()
        })
      }
    },
    methods: {
      handleOpenChange (open) {
        this.$emit('openChange', open)
      },

      handleFocus (e) {
        this.$emit('focus', e)
      },

      handleBlur (e) {
        this.$emit('blur', e)
      },

      focus () {
        this.$refs.picker.focus()
      },

      blur () {
        this.$refs.picker.blur()
      },

      getDefaultLocale  () {
        const result = {
          ...enUS,
          ...this.locale,
        }
        result.lang = {
          ...result.lang,
          ...(this.locale || {}).lang,
        }
        return result
      },

      renderPicker (locale, localeCode) {
        const props = getOptionProps(this)
        const { prefixCls, inputPrefixCls, size, showTime, disabled } = props
        const pickerClass = classNames(`${prefixCls}-picker`, {
          [`${prefixCls}-picker-${size}`]: !!size,
        })
        const pickerInputClass = classNames(`${prefixCls}-picker-input`, inputPrefixCls, {
          [`${inputPrefixCls}-lg`]: size === 'large',
          [`${inputPrefixCls}-sm`]: size === 'small',
          [`${inputPrefixCls}-disabled`]: disabled,
        })

        const timeFormat = (showTime && showTime.format) || 'HH:mm:ss'
        const vcTimePickerProps = {
          ...generateShowHourMinuteSecond(timeFormat),
          format: timeFormat,
          use12Hours: (showTime && showTime.use12Hours),
        }
        const columns = getColumns(vcTimePickerProps)
        const timePickerCls = `${prefixCls}-time-picker-column-${columns}`
        const timePickerPanelProps = {
          props: {
            ...vcTimePickerProps,
            ...showTime,
            prefixCls: `${prefixCls}-time-picker`,
            placeholder: locale.timePickerLocale.placeholder,
            transitionName: 'slide-up',
          },
          class: timePickerCls,
        }
        const timePicker = showTime ? (
          <TimePickerPanel
            {...timePickerPanelProps}
          />
        ) : null
        const pickerProps = {
          props: {
            ...props,
            pickerClass,
            pickerInputClass,
            locale,
            localeCode,
            timePicker,
          },
          on: {
            ...this.$listeners,
            openChange: this.handleOpenChange,
            focus: this.handleFocus,
            blur: this.handleBlur,
          },
          ref: 'picker',
          scopedSlots: this.$scopedSlots || {},
        }
        return (
          <Picker
            {...pickerProps}
          >
            <template slot='renderExtraFooter'>
              {this.$slots.renderExtraFooter}
            </template>
          </Picker>
        )
      },
    },

    render () {
      return (
        <LocaleReceiver
          componentName='DatePicker'
          defaultLocale={this.getDefaultLocale}
          scopedSlots={
            { default: this.renderPicker }
          }
        />
      )
    },
  }
}