main

src/modules/gemini/gemini.service.ts

@@ -279,11 +279,19 @@ IMPORTANT: Only output valid JSON, no markdown code blocks or other text.`;
         try {
           this.logger.log(`🔄 Katman 1 (deneme ${attempt}/2): ${primaryModel}`);
           const result = await this.tryGenerateContentImage(primaryModel, enhancedPrompt);
-          if (result) {
+          if (result && result.buffer.length > 0) {
             this.logger.log(`✅ Görsel üretildi (${primaryModel}): ${(result.buffer.length / 1024).toFixed(1)} KB`);
-            return result;
+            return { buffer: result.buffer, mimeType: result.mimeType };
           }
-          this.logger.warn(`⚠️ ${primaryModel} deneme ${attempt}: görsel döndürmedi (null response)`);
+          
+          const reason = result?.errorReason || 'null response';
+          this.logger.warn(`⚠️ ${primaryModel} deneme ${attempt}: görsel döndürmedi (${reason})`);
+          
+          if (['IMAGE_OTHER', 'SAFETY', 'PROHIBITED_CONTENT'].includes(reason)) {
+            this.logger.warn(`🚫 Güvenlik/Politika filtresi tetiklendi (${reason}). Denemeler iptal ediliyor.`);
+            break; // Fail fast for safety blocks
+          }
+          
           if (attempt < 2) await this.sleep(2000);
         } catch (err1: any) {
           this.logger.warn(`⚠️ ${primaryModel} deneme ${attempt} hata: ${err1.message?.substring(0, 200)}`);
@@ -295,11 +303,15 @@ IMPORTANT: Only output valid JSON, no markdown code blocks or other text.`;
       try {
         this.logger.log(`🔄 Katman 2: ${fallbackModel}`);
         const result = await this.tryGenerateContentImage(fallbackModel, enhancedPrompt);
-        if (result) {
+        if (result && result.buffer.length > 0) {
           this.logger.log(`✅ Görsel üretildi (${fallbackModel}): ${(result.buffer.length / 1024).toFixed(1)} KB`);
-          return result;
+          return { buffer: result.buffer, mimeType: result.mimeType };
+        }
+        this.logger.warn(`⚠️ ${fallbackModel}: görsel döndürmedi (${result?.errorReason || 'null response'})`);
+        
+        if (['IMAGE_OTHER', 'SAFETY', 'PROHIBITED_CONTENT'].includes(result?.errorReason || '')) {
+           this.logger.warn(`🚫 Katman 2 Güvenlik/Politika filtresi tetiklendi. Katman 3'e geçiliyor.`);
         }
-        this.logger.warn(`⚠️ ${fallbackModel}: görsel döndürmedi (null response)`);
       } catch (err2: any) {
         this.logger.warn(`⚠️ ${fallbackModel} hata: ${err2.message?.substring(0, 200)}`);
       }
@@ -323,7 +335,7 @@ IMPORTANT: Only output valid JSON, no markdown code blocks or other text.`;
           this.logger.log(`✅ Görsel üretildi (Imagen 4): ${(buffer.length / 1024).toFixed(1)} KB`);
           return { buffer, mimeType };
         }
-        this.logger.warn('⚠️ Imagen 4: görsel döndürmedi');
+        this.logger.warn(`⚠️ Imagen 4: görsel döndürmedi. Üretilen görsel sayısı: ${response.generatedImages?.length || 0}`);
       } catch (err3: any) {
         this.logger.warn(`⚠️ Imagen 4 hata: ${err3.message?.substring(0, 200)}`);
       }
@@ -343,7 +355,7 @@ IMPORTANT: Only output valid JSON, no markdown code blocks or other text.`;
   private async tryGenerateContentImage(
     model: string,
     prompt: string,
-  ): Promise<{ buffer: Buffer; mimeType: string } | null> {
+  ): Promise<{ buffer: Buffer; mimeType: string; errorReason?: string } | null> {
     const response = await this.client!.models.generateContent({
       model,
       contents: prompt,
@@ -358,7 +370,7 @@ IMPORTANT: Only output valid JSON, no markdown code blocks or other text.`;
     if (!candidate?.content?.parts || candidate.content.parts.length === 0) {
       const finishReason = candidate?.finishReason || 'UNKNOWN';
       this.logger.warn(`⚠️ ${model}: boş yanıt (finishReason: ${finishReason})`);
-      return null;
+      return { buffer: Buffer.from([]), mimeType: '', errorReason: finishReason };
     }
 
     const imagePart = candidate.content.parts.find(
@@ -375,9 +387,10 @@ IMPORTANT: Only output valid JSON, no markdown code blocks or other text.`;
     const textParts = candidate.content.parts.filter((p: any) => p.text);
     if (textParts.length > 0) {
       this.logger.warn(`⚠️ ${model}: sadece text döndü, görsel yok. Text: "${textParts[0].text?.substring(0, 100)}"`);
+      return { buffer: Buffer.from([]), mimeType: '', errorReason: 'TEXT_ONLY' };
     }
 
-    return null;
+    return { buffer: Buffer.from([]), mimeType: '', errorReason: 'NO_IMAGE_DATA' };
   }
 
   /** Basit uyku fonksiyonu — retry aralarında kullanılır */