traque/traque-app/hook/usePickImage.jsx

import { useState, } from 'react';
import { Alert } from 'react-native';
import { launchImageLibraryAsync, requestMediaLibraryPermissionsAsync } from 'expo-image-picker';

export function usePickImage() {
    const [image, setImage] = useState(null);

    const pickImage = async () => {
        try {
            const permissionResult = await requestMediaLibraryPermissionsAsync();
          
            if (permissionResult.granted === false) {
                Alert.alert("Permission refusée", "Activez l'accès au stockage ou à la gallerie dans les paramètres.");
                return;
            }

            let result = await launchImageLibraryAsync({
                mediaTypes: ['images'],
                allowsMultipleSelection: false,
                allowsEditing: true,
                aspect: [4, 3],
                quality: 1,
            });

            if (!result.canceled && result) {
                setImage(result.assets[0]);
            }
            else {
                console.log('Image picker cancelled.');
            }
        }
        catch (error) {
            console.error('Error picking image;', error);
            Alert.alert('Erreur', "Une erreur est survenue lors de la sélection d'une image.");
        }
    }

    function sendImage(location) {
        if (image) {
            let data = new FormData();
            data.append('file', {
                uri: image.uri,
                name: 'photo.jpg',
                type: 'image/jpeg',
            });

            fetch(location , {
                method: 'POST',
                body: data,
                headers: {
                    'Content-Type': 'multipart/form-data',
                },
            });
        }
    }

    return {image, pickImage, sendImage};
}