main

src/app.module.ts

@@ -118,7 +118,7 @@ import {
       useFactory: (configService: ConfigService) => ({
         fallbackLanguage: configService.get('i18n.fallbackLanguage', 'en'),
         loaderOptions: {
-          path: path.join(__dirname, '..', 'i18n'),
+          path: path.join(__dirname, 'i18n'),
           watch: configService.get('app.isDevelopment', true),
         },
       }),

src/modules/gemini/gemini.service.ts

@@ -242,6 +242,11 @@ IMPORTANT: Only output valid JSON, no markdown code blocks or other text.`;
 
   /**
    * Gemini Image Generation API ile görsel üret.
+   * 3 katmanlı fallback mimarisi:
+   *   1) gemini-2.5-flash-image (Nano Banana — hızlı, stabil)
+   *   2) gemini-3.1-flash-image-preview (Nano Banana 2 — en yeni)
+   *   3) Imagen 4 Fast (generateImages API)
+   *
    * Raspberry Pi 5 bellek koruması için buffer olarak döner.
    *
    * @param prompt - İngilizce görsel açıklaması
@@ -256,63 +261,66 @@ IMPORTANT: Only output valid JSON, no markdown code blocks or other text.`;
       throw new Error('Gemini AI is not available. Check your configuration.');
     }
 
-    const imageModel = this.configService.get<string>(
-      'gemini.imageModel',
-      'gemini-2.0-flash-preview-image-generation',
-    );
+    // Güncel model sıralaması (Nisan 2026):
+    // - gemini-2.5-flash-image: Nano Banana — stabil, hızlı
+    // - gemini-3.1-flash-image-preview: Nano Banana 2 — en yeni, yüksek kalite
+    const primaryModel = 'gemini-2.5-flash-image';
+    const fallbackModel = 'gemini-3.1-flash-image-preview';
 
     try {
       this.logger.debug(`🎨 Görsel üretiliyor: "${prompt.substring(0, 80)}..." [${aspectRatio}]`);
 
-      const enhancedPrompt = `Generate a high-quality image for this description: ${prompt}. Style: photorealistic, cinematic lighting, detailed. Aspect ratio: ${aspectRatio}.`;
+      const enhancedPrompt = `Generate a high-quality image for this description: ${prompt}. Style: photorealistic, cinematic lighting, detailed. Aspect ratio: ${aspectRatio}. IMPORTANT: Generate only the image, no text response needed.`;
 
-      // 1) First try the stable Imagen-4 Fast API
+      // ── Katman 1: gemini-2.5-flash-image (Nano Banana) ──
       try {
+        this.logger.debug(`🔄 Katman 1: ${primaryModel} deneniyor...`);
+        const result = await this.tryGenerateContentImage(primaryModel, enhancedPrompt);
+        if (result) {
+          this.logger.log(`✅ Görsel üretildi (${primaryModel}): ${(result.buffer.length / 1024).toFixed(1)} KB`);
+          return result;
+        }
+      } catch (err1: any) {
+        this.logger.warn(`⚠️ ${primaryModel} başarısız: ${err1.message?.substring(0, 120)}`);
+      }
+
+      // ── Katman 2: gemini-3.1-flash-image-preview (Nano Banana 2) ──
+      try {
+        this.logger.debug(`🔄 Katman 2: ${fallbackModel} deneniyor...`);
+        const result = await this.tryGenerateContentImage(fallbackModel, enhancedPrompt);
+        if (result) {
+          this.logger.log(`✅ Görsel üretildi (${fallbackModel}): ${(result.buffer.length / 1024).toFixed(1)} KB`);
+          return result;
+        }
+      } catch (err2: any) {
+        this.logger.warn(`⚠️ ${fallbackModel} başarısız: ${err2.message?.substring(0, 120)}`);
+      }
+
+      // ── Katman 3: Imagen 4 Fast (generateImages API) ──
+      try {
+        this.logger.debug(`🔄 Katman 3: Imagen 4 Fast deneniyor...`);
         const response = await this.client!.models.generateImages({
           model: 'imagen-4.0-fast-generate-001',
           prompt: enhancedPrompt,
           config: {
-              numberOfImages: 1,
-              aspectRatio: aspectRatio,
-              outputMimeType: 'image/jpeg',
-              personGeneration: 'ALLOW_ALL' as any
-          }
+            numberOfImages: 1,
+            aspectRatio: aspectRatio,
+            outputMimeType: 'image/jpeg',
+            personGeneration: 'ALLOW_ALL' as any,
+          },
         });
-        
+
         if (response.generatedImages?.[0]?.image?.imageBytes) {
           const buffer = Buffer.from(response.generatedImages[0].image.imageBytes, 'base64');
           const mimeType = 'image/jpeg';
-          this.logger.log(`✅ Görsel üretildi (Imagen): ${(buffer.length / 1024).toFixed(1)} KB [${mimeType}]`);
+          this.logger.log(`✅ Görsel üretildi (Imagen 4): ${(buffer.length / 1024).toFixed(1)} KB`);
           return { buffer, mimeType };
         }
-      } catch (imagenError: any) {
-        this.logger.warn(`Imagen API error, falling back to generateContent... ${imagenError.message}`);
+      } catch (err3: any) {
+        this.logger.warn(`⚠️ Imagen 4 başarısız: ${err3.message?.substring(0, 120)}`);
       }
 
-      // 2) Fallback to Gemini Flash image modalities (experimental feature)
-      const response = await this.client!.models.generateContent({
-        model: imageModel,
-        contents: enhancedPrompt,
-        config: {
-          responseModalities: ['IMAGE', 'TEXT'],
-        },
-      });
-
-      // Gemini image generation modeli, inlineData olarak görsel döner
-      const candidate = response.candidates?.[0];
-      const imagePart = candidate?.content?.parts?.find(
-        (p: any) => p.inlineData?.mimeType?.startsWith('image/'),
-      );
-
-      if (imagePart?.inlineData?.data) {
-        const buffer = Buffer.from(imagePart.inlineData.data, 'base64');
-        const mimeType = imagePart.inlineData.mimeType || 'image/png';
-
-        this.logger.log(`✅ Görsel üretildi (Flash): ${(buffer.length / 1024).toFixed(1)} KB [${mimeType}]`);
-        return { buffer, mimeType };
-      }
-
-      this.logger.warn('Gemini görsel üretemedi — response içinde image part bulunamadı');
+      this.logger.error('❌ Tüm görsel üretim katmanları başarısız oldu');
       return null;
     } catch (error) {
       this.logger.error(`Gemini görsel üretim hatası: ${error instanceof Error ? error.message : error}`);
@@ -320,6 +328,36 @@ IMPORTANT: Only output valid JSON, no markdown code blocks or other text.`;
     }
   }
 
+  /**
+   * generateContent API ile görsel üretim denemesi.
+   * responseModalities: ['IMAGE', 'TEXT'] kullanarak inlineData içinden resim çıkarır.
+   */
+  private async tryGenerateContentImage(
+    model: string,
+    prompt: string,
+  ): Promise<{ buffer: Buffer; mimeType: string } | null> {
+    const response = await this.client!.models.generateContent({
+      model,
+      contents: prompt,
+      config: {
+        responseModalities: ['IMAGE', 'TEXT'],
+      },
+    });
+
+    const candidate = response.candidates?.[0];
+    const imagePart = candidate?.content?.parts?.find(
+      (p: any) => p.inlineData?.mimeType?.startsWith('image/'),
+    );
+
+    if (imagePart?.inlineData?.data) {
+      const buffer = Buffer.from(imagePart.inlineData.data, 'base64');
+      const mimeType = imagePart.inlineData.mimeType || 'image/png';
+      return { buffer, mimeType };
+    }
+
+    return null;
+  }
+
   /**
    * Sahne bazlı görsel üret — visualPrompt ve video stili kullanarak.
    *

src/modules/users/users.controller.ts

@@ -8,7 +8,7 @@ import {
   ApiResponse,
   createSuccessResponse,
 } from '../../common/types/api-response.type';
-import { User } from '@prisma/client/wasm';
+import { User } from '@prisma/client';
 
 import { plainToInstance } from 'class-transformer';
 import { UserResponseDto } from './dto/user.dto';

src/modules/users/users.service.ts

@@ -3,7 +3,7 @@ import * as bcrypt from 'bcrypt';
 import { PrismaService } from '../../database/prisma.service';
 import { BaseService } from '../../common/base';
 import { CreateUserDto, UpdateUserDto } from './dto/user.dto';
-import { User } from '@prisma/client/wasm';
+import { User } from '@prisma/client';
 
 @Injectable()
 export class UsersService extends BaseService<