Fix photos + API hooks + cleaning

mobile/traque-app/hook/useImageApi.jsx

@@ -0,0 +1,45 @@
+// Rect
+import { useCallback, useMemo } from "react";
+// Contexts
+import { useTeamConnexion } from "../context/teamConnexionContext";
+import { useTeamContext } from '../context/teamContext';
+// Util
+import { SERVER_URL } from "../util/constants";
+
+export const useImageApi = () => {
+    const { teamId } = useTeamConnexion();
+    const { teamInfos } = useTeamContext();
+    const { enemyName } = teamInfos;
+
+    const uploadTeamImage = useCallback(async (imageUri) => {
+        if (!imageUri || !teamId) return;
+
+        const data = new FormData();
+        data.append('file', {
+            uri: imageUri,
+            name: 'photo.jpg',
+            type: 'image/jpeg',
+        });
+
+        try {
+            const response = await fetch(`${SERVER_URL}/upload?team=${teamId}`, {
+                method: 'POST',
+                body: data,
+            });
+            
+            if (!response.ok) throw new Error("Échec de l'upload");
+            return await response.blob();
+        } catch (error) {
+            console.error("Erreur uploadImage :", error);
+            throw error;
+        }
+    }, [teamId]);
+
+    const enemyImage = useMemo(() => {
+        if (!teamId || !enemyName) return require('../assets/images/missing_image.jpg');
+        
+        return {uri: `${SERVER_URL}/photo/enemy?team=${teamId}`};
+    }, [teamId, enemyName]);
+
+    return { enemyImage, uploadTeamImage };
+};