import PropTypes from 'prop-types'
import React from 'react'
import {
  ActivityIndicator,
  Platform,
  StyleSheet,
  Text,
  TouchableOpacity,
  View,
  StyleProp,
  ViewStyle,
  TextStyle,
} from 'react-native'
import Color from './Color'
import { StylePropType } from './utils'

const styles = StyleSheet.create({
  container: {
    alignItems: 'center',
    marginTop: 5,
    marginBottom: 10,
  },
  wrapper: {
    alignItems: 'center',
    justifyContent: 'center',
    backgroundColor: Color.defaultColor,
    borderRadius: 15,
    height: 30,
    paddingLeft: 10,
    paddingRight: 10,
  },
  text: {
    backgroundColor: Color.backgroundTransparent,
    color: Color.white,
    fontSize: 12,
  },
  activityIndicator: {
    marginTop: Platform.select({
      ios: -14,
      android: -16,
      default: -15,
    }),
  },
})

export interface LoadEarlierProps {
  isLoadingEarlier?: boolean
  label?: string
  containerStyle?: StyleProp<ViewStyle>
  wrapperStyle?: StyleProp<ViewStyle>
  textStyle?: StyleProp<TextStyle>
  activityIndicatorStyle?: StyleProp<ViewStyle>
  activityIndicatorColor?: string
  activityIndicatorSize?: number | 'small' | 'large'
  onLoadEarlier?(): void
}

export function LoadEarlier ({
  isLoadingEarlier = false,
  onLoadEarlier = () => {},
  label = 'Load earlier messages',
  containerStyle,
  wrapperStyle,
  textStyle,
  activityIndicatorColor = 'white',
  activityIndicatorSize = 'small',
  activityIndicatorStyle,
}: LoadEarlierProps): React.ReactElement {
  return (
    <TouchableOpacity
      style={[styles.container, containerStyle]}
      onPress={onLoadEarlier}
      disabled={isLoadingEarlier}
      accessibilityRole='button'
    >
      <View style={[styles.wrapper, wrapperStyle]}>
        {isLoadingEarlier
          ? (
            <View>
              <Text style={[styles.text, textStyle, { opacity: 0 }]}>
                {label}
              </Text>
              <ActivityIndicator
                color={activityIndicatorColor!}
                size={activityIndicatorSize!}
                style={[styles.activityIndicator, activityIndicatorStyle]}
              />
            </View>
          )
          : (
            <Text style={[styles.text, textStyle]}>{label}</Text>
          )}
      </View>
    </TouchableOpacity>
  )
}

LoadEarlier.propTypes = {
  onLoadEarlier: PropTypes.func,
  isLoadingEarlier: PropTypes.bool,
  label: PropTypes.string,
  containerStyle: StylePropType,
  wrapperStyle: StylePropType,
  textStyle: StylePropType,
  activityIndicatorStyle: StylePropType,
  activityIndicatorColor: PropTypes.string,
  activityIndicatorSize: PropTypes.string,
}