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core/prompts.py

@@ -251,33 +251,36 @@ def get_flashcard_explanation_prompt(question: str, language: str = "Japanese")
     # Language-specific instructions for explanations
     if language == "Japanese":
         language_instruction = """
-LANGUAGE: JAPANESE
-- Provide the explanation in Japanese language
-- Use appropriate Japanese terminology and expressions
-- Ensure the explanation is natural and clear in Japanese
-- Use polite form (です/ます) for formal educational content"""
+        LANGUAGE: JAPANESE
+        - Provide the explanation in Japanese language
+        - Use appropriate Japanese terminology and expressions
+        - Ensure the explanation is natural and clear in Japanese
+        - Use polite form (です/ます) for formal educational content"""
     else:  # English
         language_instruction = """
-LANGUAGE: ENGLISH
-- Provide the explanation in English language
-- Use clear, professional English terminology
-- Ensure the explanation is grammatically correct and natural
-- Use appropriate academic language for educational content"""
+        LANGUAGE: ENGLISH
+        - Provide the explanation in English language
+        - Use clear, professional English terminology
+        - Ensure the explanation is grammatically correct and natural
+        - Use appropriate academic language for educational content"""
 
     # Create comprehensive explanation prompt with PDF context
     return f"""You are an expert tutor. Based on the uploaded PDF document, provide a detailed explanation for the following question:
 
-{language_instruction}
+    {language_instruction}
+
+    Question: {question}
 
-Question: {question}
+    OUTPUT FORMAT:
+    - Provide the explanation as a SINGLE continuous paragraph.
+    - Do NOT use any newlines (\\n), bullet points, or numbered lists.
+    - Do NOT use any markdown formatting like bold (**), italics (*), or headers (#).
+    - The output must be simple, plain text only.
 
-Please provide:
-1. A clear, comprehensive explanation that helps the student understand the concept
-2. Context from the PDF document that supports the answer
-3. Additional relevant information that enhances understanding
-4. Examples or analogies if helpful
+    REQUIREMENTS:
+    Include a clear, comprehensive explanation that helps the student understand the concept, using context from the PDF document, additional relevant information, and examples or analogies.
 
-Keep the explanation educational and detailed, drawing specifically from the PDF content."""
+    Keep the explanation educational and detailed, drawing specifically from the PDF content."""
 
 
 def get_mindmap_system_prompt() -> str:

services/flashcard_service.py

@@ -186,7 +186,8 @@ class FlashcardService:
                     response = await asyncio.to_thread(
                         self.openai_client.chat.completions.create,
                         model="gpt-4o-mini",
-                        messages=messages
+                        messages=messages,
+                        temperature=0.3
                     )
                     
                     # Clean up OpenAI file (non-blocking)
@@ -195,7 +196,11 @@ class FlashcardService:
                         uploaded_file.id
                     )
                     
-                    return response.choices[0].message.content
+                    content = response.choices[0].message.content or ""
+                    # Clean up: remove newlines, markdown bolding, and extra spaces
+                    content = content.replace("\n", " ").replace("**", "").replace("__", "")
+                    content = " ".join(content.split())
+                    return content
                 finally:
                     # Remove temp file (non-blocking)
                     if os.path.exists(tmp_path):
@@ -210,9 +215,14 @@ class FlashcardService:
                 response = await asyncio.to_thread(
                     self.openai_client.chat.completions.create,
                     model="gpt-4o-mini",
-                    messages=messages
+                    messages=messages,
+                    temperature=0.3
                 )
-                return response.choices[0].message.content
+                content = response.choices[0].message.content or ""
+                # Clean up: remove newlines, markdown bolding, and extra spaces
+                content = content.replace("\n", " ").replace("**", "").replace("__", "")
+                content = " ".join(content.split())
+                return content
 
         except Exception as e:
             logger.error(f"Explanation generation failed: {str(e)}")