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import { Camera } from 'expo-camera';
import React, { useState, useEffect } from 'react';
import { Text, View, TouchableOpacity } from 'react-native';


const AboutView = () => {

  const [hasPermission, setHasPermission] = useState(null);
  const [type, setType] = useState(Camera.Constants.Type.back);

  useEffect(() => {
    (async () => {
      const { status } = await Camera.requestPermissionsAsync();
      setHasPermission(status === 'granted');
    })();
  }, []);

  if (hasPermission === null) {
    return <View />;
  }
  if (hasPermission === false) {
    return <Text>No access to camera</Text>;
  }

  const takePicture = async () => {
    if (cameraRef) {
      const photo = await cameraRef.current.takePictureAsync();
      console.log(photo);
    }
  };

  let cameraRef = null;

  return (
    <View style={{ flex: 1 }}>
      <Camera style={{ flex: 1 }} type={type} ref={(ref) => (cameraRef = ref)}>
        <View
          style={{
            flex: 1,
            backgroundColor: 'transparent',
            flexDirection: 'row',
          }}
        >
          <TouchableOpacity
            style={{
              flex: 0.1,
              alignSelf: 'flex-end',
              alignItems: 'center',
            }}
            onPress={() => {
              setType(
                type === Camera.Constants.Type.back
                  ? Camera.Constants.Type.front
                  : Camera.Constants.Type.back
              );
            }}
          >
            <Text style={{ fontSize: 18, marginBottom: 10, color: 'white' }}>
              Flip
            </Text>
          </TouchableOpacity>
          <TouchableOpacity
            style={{
              flex: 0.1,
              alignSelf: 'flex-end',
              alignItems: 'center',
            }}
            onPress={takePicture}
          >
            <Text style={{ fontSize: 18, marginBottom: 10, color: 'white' }}>
              Take Picture
            </Text>
          </TouchableOpacity>
        </View>
      </Camera>
    </View>
  );
};

const styles = {
  container: {
    //flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
  title: {
    fontSize: 24,
    fontWeight: 'bold',
  },
};

export default AboutView;
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