Ajout traque-app

traque-app/hook/usePickImage.jsx

@@ -0,0 +1,58 @@
+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};
+}