Implement persona generation system with platform-specific adaptations

Co-authored-by: ajay.calsoft <ajay.calsoft@gmail.com>

backend/api/persona_routes.py

@@ -0,0 +1,167 @@
+"""
+FastAPI routes for persona management.
+Integrates persona generation and management into the main API.
+"""
+
+from fastapi import APIRouter, HTTPException, Query
+from typing import Dict, Any, Optional
+
+from api.persona import (
+    generate_persona,
+    get_user_personas,
+    get_persona_details,
+    get_platform_persona,
+    update_persona,
+    delete_persona,
+    validate_persona_generation_readiness,
+    generate_persona_preview,
+    get_supported_platforms,
+    PersonaGenerationRequest
+)
+
+from services.persona_replication_engine import PersonaReplicationEngine
+
+# Create router
+router = APIRouter(prefix="/api/personas", tags=["personas"])
+
+@router.post("/generate")
+async def generate_persona_endpoint(
+    request: PersonaGenerationRequest,
+    user_id: int = Query(1, description="User ID")
+):
+    """Generate a new writing persona from onboarding data."""
+    return await generate_persona(user_id, request)
+
+@router.get("/user/{user_id}")
+async def get_user_personas_endpoint(user_id: int):
+    """Get all personas for a user."""
+    return await get_user_personas(user_id)
+
+@router.get("/{persona_id}")
+async def get_persona_details_endpoint(
+    persona_id: int,
+    user_id: int = Query(..., description="User ID")
+):
+    """Get detailed information about a specific persona."""
+    return await get_persona_details(user_id, persona_id)
+
+@router.get("/platform/{platform}")
+async def get_platform_persona_endpoint(
+    platform: str,
+    user_id: int = Query(1, description="User ID")
+):
+    """Get persona adaptation for a specific platform."""
+    return await get_platform_persona(user_id, platform)
+
+@router.put("/{persona_id}")
+async def update_persona_endpoint(
+    persona_id: int,
+    update_data: Dict[str, Any],
+    user_id: int = Query(..., description="User ID")
+):
+    """Update an existing persona."""
+    return await update_persona(user_id, persona_id, update_data)
+
+@router.delete("/{persona_id}")
+async def delete_persona_endpoint(
+    persona_id: int,
+    user_id: int = Query(..., description="User ID")
+):
+    """Delete a persona."""
+    return await delete_persona(user_id, persona_id)
+
+@router.get("/check/readiness")
+async def check_persona_readiness_endpoint(
+    user_id: int = Query(1, description="User ID")
+):
+    """Check if user has sufficient data for persona generation."""
+    return await validate_persona_generation_readiness(user_id)
+
+@router.get("/preview/generate")
+async def generate_preview_endpoint(
+    user_id: int = Query(1, description="User ID")
+):
+    """Generate a preview of the writing persona without saving."""
+    return await generate_persona_preview(user_id)
+
+@router.get("/platforms/supported")
+async def get_supported_platforms_endpoint():
+    """Get list of supported platforms for persona generation."""
+    return await get_supported_platforms()
+
+@router.post("/generate-content")
+async def generate_content_with_persona_endpoint(
+    request: Dict[str, Any]
+):
+    """Generate content using persona replication engine."""
+    try:
+        user_id = request.get("user_id", 1)
+        platform = request.get("platform")
+        content_request = request.get("content_request")
+        content_type = request.get("content_type", "post")
+        
+        if not platform or not content_request:
+            raise HTTPException(status_code=400, detail="Platform and content_request are required")
+        
+        engine = PersonaReplicationEngine()
+        result = engine.generate_content_with_persona(
+            user_id=user_id,
+            platform=platform,
+            content_request=content_request,
+            content_type=content_type
+        )
+        
+        return result
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Content generation failed: {str(e)}")
+
+@router.get("/export/{platform}")
+async def export_persona_prompt_endpoint(
+    platform: str,
+    user_id: int = Query(1, description="User ID")
+):
+    """Export hardened persona prompt for external use."""
+    try:
+        engine = PersonaReplicationEngine()
+        export_package = engine.export_persona_for_external_use(user_id, platform)
+        
+        if "error" in export_package:
+            raise HTTPException(status_code=400, detail=export_package["error"])
+        
+        return export_package
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Export failed: {str(e)}")
+
+@router.post("/validate-content")
+async def validate_content_endpoint(
+    request: Dict[str, Any]
+):
+    """Validate content against persona constraints."""
+    try:
+        user_id = request.get("user_id", 1)
+        platform = request.get("platform")
+        content = request.get("content")
+        
+        if not platform or not content:
+            raise HTTPException(status_code=400, detail="Platform and content are required")
+        
+        engine = PersonaReplicationEngine()
+        persona_data = engine.persona_service.get_persona_for_platform(user_id, platform)
+        
+        if not persona_data:
+            raise HTTPException(status_code=404, detail="No persona found for platform")
+        
+        validation_result = engine._validate_content_fidelity(content, persona_data, platform)
+        
+        return {
+            "validation_result": validation_result,
+            "persona_id": persona_data["core_persona"]["id"],
+            "platform": platform
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Validation failed: {str(e)}")