import * as React from 'react'
import { TextStyle, TouchableOpacity, View, ViewStyle } from 'react-native'
import { Text } from '../text/text'
import { color, spacing } from '../../theme'
import { CheckboxProps } from './checkbox.props'

const ROOT: ViewStyle = {
  flexDirection: 'row',
  paddingVertical: spacing[1],
  alignSelf: 'flex-start',
}

const DIMENSIONS = { width: 16, height: 16 }

const OUTLINE: ViewStyle = {
  ...DIMENSIONS,
  marginTop: 2, // finicky and will depend on font/line-height/baseline/weather
  justifyContent: 'center',
  alignItems: 'center',
  borderWidth: 1,
  borderColor: color.primaryDarker,
  borderRadius: 1,
}

const FILL: ViewStyle = {
  width: DIMENSIONS.width - 4,
  height: DIMENSIONS.height - 4,
  backgroundColor: color.primary,
}

const LABEL: TextStyle = { paddingLeft: spacing[2] }

export function Checkbox(props: CheckboxProps) {
  const numberOfLines = props.multiline ? 0 : 1

  const rootStyle = [ROOT, props.style]
  const outlineStyle = [OUTLINE, props.outlineStyle]
  const fillStyle = [FILL, props.fillStyle]

  const onPress = props.onToggle ? () => props.onToggle && props.onToggle(!props.value) : null

  return (
    <TouchableOpacity
      activeOpacity={1}
      disabled={!props.onToggle}
      onPress={onPress}
      style={rootStyle}
    >
      <View style={outlineStyle}>{props.value && <View style={fillStyle} />}</View>
      <Text text={props.text} tx={props.tx} numberOfLines={numberOfLines} style={LABEL} />
    </TouchableOpacity>
  )
}
