fix list and improve cloud functions

functions/helpers/firebase.js

@@ -0,0 +1,14 @@
+const admin = require("firebase-admin");
+
+async function deleteFolder(path) {
+  try {
+    console.log(`Deleting folder: ${path}`);
+    const bucket = admin.storage().bucket();
+    await bucket.deleteFiles({ prefix: path, force: true });
+    console.log(`Folder ${path} deleted successfully`);
+  } catch (e) {
+    console.log(e);
+  }
+}
+
+exports.deleteFolder = deleteFolder;

functions/helpers/gemini.js

@@ -164,7 +164,7 @@ ${policy}
   return output;
 };
 
-exports.generateImageV2 = async (prompt, size = 1024) => {
+exports.generateImageV2 = async (prompt, size = 1024, path = "") => {
   if (typeof prompt !== "string" || prompt.trim().length < 1) {
     throw new Error("Vous devez spécifier un prompt (string) non vide.");
   }
@@ -280,14 +280,7 @@ exports.generateImageV2 = async (prompt, size = 1024) => {
 
     const buffer = Buffer.from(b64, "base64");
     const bucket = admin.storage().bucket();
-    const ext =
-      mimeType === "image/jpeg"
-        ? "jpg"
-        : mimeType === "image/webp"
-          ? "webp"
-          : "png";
     const token = require("crypto").randomUUID();
-    const path = `generated/images/${Date.now()}-${token}.${ext}`;
 
     console.log(
       "💾 [generateImageV2] Sauvegarde de l'image dans Firebase Storage",
@@ -327,6 +320,7 @@ exports.CombineCoverAndPicture = async (
   backgroundImage,
   foregroundImage,
   options = {},
+  path = "",
 ) => {
   const size = Number(options.size || 1024);
   console.log("🧩 [CombineCoverAndPicture] Start", { size });
@@ -441,14 +435,7 @@ Tu reçois 2 images: la première est l'arrière-plan, la seconde est une photo
 
   const buffer = Buffer.from(b64, "base64");
   const bucket = admin.storage().bucket();
-  const ext =
-    mimeType === "image/jpeg"
-      ? "jpg"
-      : mimeType === "image/webp"
-        ? "webp"
-        : "png";
   const token = require("crypto").randomUUID();
-  const path = `generated/combined/${Date.now()}-${token}.${ext}`;
 
   await bucket.file(path).save(buffer, {
     resumable: false,