App.js

import { StatusBar } from 'expo-status-bar';
import { StyleSheet, View, Image } from 'react-native';
import ImageViewer from './components/ImageViewer';
import Button from './components/Button';
import * as ImagePicker from 'expo-image-picker';
import { useState } from 'react';
import CircleButton from './components/CircleButton';
import IconButton from './components/IconButtons';
import EmojiPicker from './components/EmojiPicker';


const PlaceholderImage = require('./assets/images/background-image.png')

export default function App() {
  const [isModalVisible, setIsModalVisible] = useState(false);
  const [showAppOptions, setShowAppOptions] = useState(false);

  const [selectedImage, setSelectedImage] = useState(null);

  

  const pickImageAsync = async () => {
    let result = await ImagePicker.launchImageLibraryAsync({
      allowsEditing: true,
      quality: 1,
    });

    if (!result.canceled){
      setSelectedImage(result.assets[0].uri);
      setShowAppOptions(true);
    } else{
      alert('You did not select any image.');
    }
  };

  const onReset = () => {
    setShowAppOptions(false);
  };
  const onAddSticker = () => {
    setIsModalVisible(true);
  };
  const onModalClose = () => {
    setIsModalVisible(false);
  };
  const onSaveImageAsync = async () => {
    //
  };

  return (
    <View style={styles.container}>
      <View style={styles.imageContainer}>
        <ImageViewer 
        placeholderImageSource={PlaceholderImage}
        selectedImage={selectedImage}
        />
      </View>
      {showAppOptions ? (
      <View style={styles.optionsContainer}>
        <View style={styles.optionsRow}>
          <IconButton icon="refresh" label="Reset"
          onPress={onReset}/>
          <CircleButton onPress={onAddSticker}/>
          <IconButton icon="save-alt" label="Save"
          onPress={onSaveImageAsync}/>
        </View>
      </View>
      ): (
        <View style={styles.footerContainer}>
        <Button 
        theme="primary" 
        label="Choose a photo" 
        onPress={pickImageAsync}/>
        <Button label="Use this photo" onPress={() => setShowAppOptions(true)}/>
      </View>
      )}
      <EmojiPicker isVisible={isModalVisible} onClose={onModalClose}>
        {/* A list of emoji component will go here */}
      </EmojiPicker>
      <StatusBar style="auto" />
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#25292e',
    alignItems: 'center',
  },
  imageContainer:{
    flex: 1,
    paddingTop: 58,
  },
  image: {
    width: 320,
    height: 440,
    borderRadius: 18,
  },
  footerContainer:{
    flex:1/3,
    alignItems: 'center',
  },
  optionsContainer: {
    position:'absolute',
    bottom:80,
  },
  optionsRow: {
    alignItems:'center',
    flexDirection:'row',
  },
});