Update app.py

app.py

@@ -1,20 +1,15 @@
 import os
-import re
 import json
 import time
-import asyncio
 from datetime import datetime
 from typing import List, Dict, Any, Optional, Union
-from pydantic import BaseModel, Field, EmailStr, field_validator
+from pydantic import BaseModel, Field, EmailStr, validator
 from fastapi import FastAPI, HTTPException, Query, Depends, Request
 from fastapi.responses import JSONResponse, Response
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.openapi.utils import get_openapi
 import httpx
 from dotenv import load_dotenv
-import pandas as pd
-import psycopg2
-from sqlalchemy import create_engine, inspect, text
 
 # LangChain and OpenAI imports
 try:
@@ -25,30 +20,21 @@ except ImportError:
     LANGCHAIN_AVAILABLE = False
     print("Warning: LangChain not available. Install with: pip install langchain langchain-openai")
 
-load_dotenv()
+load_dotenv(override=True)
 
 # Configuration
 SMARTLEAD_API_KEY = os.getenv("SMARTLEAD_API_KEY", "your-api-key-here")
 SMARTLEAD_BASE_URL = "https://server.smartlead.ai/api/v1"
-DB_PARAMS = {
-    'dbname': os.getenv("DB_NAME"),
-    'user': os.getenv("DB_USER"),
-    'password': os.getenv("DB_PASSWORD"),
-    'host': os.getenv("DB_HOST"),
-    'port': os.getenv("DB_PORT")
-}
-DATABASE_URL = f"postgresql://{DB_PARAMS['user']}:{DB_PARAMS['password']}@{DB_PARAMS['host']}:{DB_PARAMS['port']}/{DB_PARAMS['dbname']}"
 
 # Initialize FastAPI app
 app = FastAPI(
     title="Smartlead API - Complete Integration",
-    version="2.1.0",
+    version="2.0.0",
     description="Comprehensive FastAPI wrapper for Smartlead email automation platform",
     docs_url="/docs",
     redoc_url="/redoc"
 )
 
-
 # Add CORS middleware
 app.add_middleware(
     CORSMiddleware,
@@ -96,17 +82,16 @@ class LeadInput(BaseModel):
     linkedin_profile: Optional[str] = Field(None, description="Lead's LinkedIn profile URL")
     company_url: Optional[str] = Field(None, description="Company website URL")
     
-    @field_validator('custom_fields')
-    @classmethod
+    @validator('custom_fields')
     def validate_custom_fields(cls, v):
         if v is not None and len(v) > 20:
             raise ValueError('Custom fields cannot exceed 20 fields')
         return v
     
-    @field_validator('phone_number')
-    @classmethod
+    @validator('phone_number')
     def validate_phone_number(cls, v):
         if v is not None:
+            # Convert to string if it's an integer
             return str(v)
         return v
 
@@ -148,20 +133,8 @@ class CampaignSequence(BaseModel):
 class SaveSequencesRequest(BaseModel):
     sequences: List[CampaignSequence] = Field(..., description="List of campaign sequences")
 
-class Job(BaseModel):
-    id: str
-    company_name: Optional[str] = None
-    job_title: Optional[str] = None
-    job_location: Optional[str] = None
-    company_blurb: Optional[str] = None
-    company_culture: Optional[str] = None
-    description: Optional[str] = None
-    company_size: Optional[str] = None
-    requirements: Optional[str] = None
-    salary: Optional[str] = None
-
 class GenerateSequencesRequest(BaseModel):
-    job_id: str = Field(..., description="Job ID to fetch from database and generate sequences for")
+    job_description: str = Field(..., description="Job description to generate sequences for")
 
 class Campaign(BaseModel):
     id: int
@@ -170,8 +143,8 @@ class Campaign(BaseModel):
     updated_at: datetime
     status: str
     name: str
-    track_settings: Union[str, List[Any]]
-    scheduler_cron_value: Optional[Union[str, Dict[str, Any]]] = None
+    track_settings: Union[str, List[Any]] # FIX: Accept string or list
+    scheduler_cron_value: Optional[Union[str, Dict[str, Any]]] = None # FIX: Accept string or dict
     min_time_btwn_emails: int
     max_leads_per_day: int
     stop_lead_settings: str
@@ -179,7 +152,7 @@ class Campaign(BaseModel):
     client_id: Optional[int] = None
     enable_ai_esp_matching: bool
     send_as_plain_text: bool
-    follow_up_percentage: Optional[Union[str, int]] = None
+    follow_up_percentage: Optional[Union[str, int]] = None # FIX: Accept string or int
 
 class CampaignListResponse(BaseModel):
     campaigns: List[Campaign]
@@ -201,10 +174,10 @@ class WarmupDetails(BaseModel):
     status: str
     total_sent_count: int
     total_spam_count: int
-    warmup_reputation: str
+    warmup_reputation: Union[str, int]
     warmup_key_id: Optional[str] = None
     warmup_created_at: Optional[datetime] = None
-    reply_rate: int
+    reply_rate: Optional[int] = None
     blocked_reason: Optional[str] = None
 
 class EmailAccount(BaseModel):
@@ -240,6 +213,13 @@ class EmailAccount(BaseModel):
     campaign_count: Optional[int] = None
     warmup_details: Optional[WarmupDetails] = None
 
+class WarmupSettingsRequest(BaseModel):
+    warmup_enabled: bool
+    total_warmup_per_day: Optional[int] = None
+    daily_rampup: Optional[int] = None
+    reply_rate_percentage: Optional[int] = None
+    warmup_key_id: Optional[str] = Field(None, description="String value if passed will update the custom warmup-key identifier")
+
 class LeadCategoryUpdateRequest(BaseModel):
     category_id: int = Field(..., description="Category ID to assign to the lead")
     pause_lead: bool = Field(False, description="Whether to pause the lead after category update")
@@ -282,115 +262,10 @@ class MessageHistoryRequest(BaseModel):
     bcc: Optional[str] = Field(None, description="BCC recipients")
     add_signature: bool = Field(True, description="Whether to add signature")
 
-class AddLeadsAndSequencesRequest(BaseModel):
-    lead_list: List[LeadInput] = Field(..., max_items=100, description="List of leads to add (maximum 100 leads)")
-    settings: Optional[LeadSettings] = Field(None, description="Settings for lead processing")
-    job_id: str = Field(..., description="Job ID to fetch from database and generate sequences for")
-
 # ============================================================================
 # HELPER FUNCTIONS
 # ============================================================================
 
-def get_database_connection():
-    """Get database connection"""
-    try:
-        conn_string = f"postgresql://{DB_PARAMS['user']}:{DB_PARAMS['password']}@{DB_PARAMS['host']}:{DB_PARAMS['port']}/{DB_PARAMS['dbname']}"
-        return create_engine(conn_string)
-    except Exception as e:
-        raise HTTPException(status_code=500, detail=f"Database connection failed: {str(e)}")
-
-def fetch_job_by_id(job_id: str) -> Job:
-    """Fetch job details from database by ID using pandas DataFrame"""
-    try:
-        conn = get_database_connection()
-        df = pd.read_sql_table("jobs", con=conn)
-        
-        # Filter the DataFrame to find the job with the specified ID
-        job_row = df[df['job_id'] == job_id]
-        
-        if job_row.empty:
-            raise HTTPException(status_code=404, detail=f"Job with ID {job_id} not found")
-        
-        # Get the first (and should be only) row
-        
-        return Job(
-            id=str(job_row.iloc[0]['job_id']),
-            company_name=str(job_row.iloc[0]['company_name']) if pd.notna(job_row.iloc[0]['company_name']) else None,
-            job_title=str(job_row.iloc[0]['job_title']) if pd.notna(job_row.iloc[0]['job_title']) else None,
-            job_location=str(job_row.iloc[0]['job_location']) if pd.notna(job_row.iloc[0]['job_location']) else None,
-            company_blurb=str(job_row.iloc[0]['company_blurb']) if pd.notna(job_row.iloc[0]['company_blurb']) else None,
-            company_culture=str(job_row.iloc[0]['company_culture']) if pd.notna(job_row.iloc[0]['company_culture']) else None,
-            description=str(job_row.iloc[0]['description']) if pd.notna(job_row.iloc[0]['description']) else None,
-            company_size=str(job_row.iloc[0]['company_size']) if pd.notna(job_row.iloc[0]['company_size']) else None,
-            requirements=str(job_row.iloc[0]['requirements']) if pd.notna(job_row.iloc[0]['requirements']) else None,
-            salary=str(job_row.iloc[0]['salary']) if pd.notna(job_row.iloc[0]['salary']) else None
-        )
-        
-    except HTTPException:
-        raise
-    except Exception as e:
-        raise HTTPException(status_code=500, detail=f"Error fetching job: {str(e)}")
-
-def list_available_jobs(limit: int = 10) -> List[Dict[str, Any]]:
-    """List available jobs from database using pandas DataFrame"""
-    try:
-        conn = get_database_connection()
-        df = pd.read_sql_table("jobs", con=conn)
-        
-        # Select only the required columns and limit the results
-        selected_columns = ['job_id', 'company_name', 'job_title', 'job_location', 'company_size', 'salary']
-        df_subset = df[selected_columns].head(limit)
-        
-        # Convert DataFrame to list of dictionaries
-        jobs_list = []
-        for _, row in df_subset.iterrows():
-            jobs_list.append({
-                "id": str(row['job_id']),  # Ensure ID is returned as string
-                "company_name": str(row['company_name']) if pd.notna(row['company_name']) else None,
-                "job_title": str(row['job_title']) if pd.notna(row['job_title']) else None,
-                "job_location": str(row['job_location']) if pd.notna(row['job_location']) else None,
-                "company_size": str(row['company_size']) if pd.notna(row['company_size']) else None,
-                "salary": str(row['salary']) if pd.notna(row['salary']) else None
-            })
-        
-        return jobs_list
-        
-    except Exception as e:
-        raise HTTPException(status_code=500, detail=f"Error fetching jobs: {str(e)}")
-
-def build_job_description(job: Job) -> str:
-    """Build a comprehensive job description from job details"""
-    parts = []
-    
-    if job.company_name:
-        parts.append(f"Company: {job.company_name}")
-    
-    if job.job_title:
-        parts.append(f"Position: {job.job_title}")
-    
-    if job.job_location:
-        parts.append(f"Location: {job.job_location}")
-    
-    if job.company_size:
-        parts.append(f"Company Size: {job.company_size}")
-    
-    if job.salary:
-        parts.append(f"Salary: {job.salary}")
-    
-    if job.company_blurb:
-        parts.append(f"About the Company: {job.company_blurb}")
-    
-    if job.company_culture:
-        parts.append(f"Company Culture: {job.company_culture}")
-    
-    if job.description:
-        parts.append(f"Job Description: {job.description}")
-    
-    if job.requirements:
-        parts.append(f"Requirements: {job.requirements}")
-    
-    return "\n\n".join(parts)
-
 def _get_smartlead_url(endpoint: str) -> str:
     return f"{SMARTLEAD_BASE_URL}/{endpoint.lstrip('/')}"
 
@@ -404,10 +279,11 @@ async def call_smartlead_api(method: str, endpoint: str, data: Any = None, param
     
     try:
         async with httpx.AsyncClient(timeout=30.0) as client:
-            if method.upper() in ("GET", "DELETE"):
-                resp = await client.request(method, url, params=params)
-            else:
-                resp = await client.request(method, url, params=params, json=data)
+            request_kwargs = {"params": params}
+            if data is not None:
+                request_kwargs["json"] = data
+            
+            resp = await client.request(method, url, **request_kwargs)
         
         if resp.status_code >= 400:
             try:
@@ -505,40 +381,62 @@ async def get_campaign_leads(campaign_id: int, offset: int = 0, limit: int = 100
     params = {"offset": offset, "limit": limit}
     return await call_smartlead_api("GET", f"campaigns/{campaign_id}/leads", params=params)
 
-# *** MODIFIED: add_leads_to_campaign now uses asyncio.gather for performance ***
 @app.post("/campaigns/{campaign_id}/leads", response_model=Dict[str, Any], tags=["Leads"])
 async def add_leads_to_campaign(campaign_id: int, request: AddLeadsRequest):
     """Add leads to a campaign by ID with personalized welcome and closing messages"""
+    request_data = request.dict()
     
-    async def process_lead(lead: Dict[str, Any]) -> Dict[str, Any]:
-        """Inner function to process a single lead."""
+    # Process each lead to generate personalized messages and clean up data
+    for lead in request_data.get("lead_list", []):
         lead_cleaned = {k: v for k, v in lead.items() if v is not None and v != ""}
         
+        # Generate personalized welcome and closing messages using LLM
         try:
             personalized_messages = await generate_welcome_closing_messages(lead_cleaned)
+            
+            # Initialize custom_fields if it doesn't exist
             if "custom_fields" not in lead_cleaned:
                 lead_cleaned["custom_fields"] = {}
-            lead_cleaned["custom_fields"]["Welcome_Message"] = personalized_messages.get("welcome_message", "")
-            lead_cleaned["custom_fields"]["Closing_Message"] = personalized_messages.get("closing_message", "")
+            
+            # Add the generated messages to custom_fields
+            if personalized_messages.get("welcome_message"):
+                lead_cleaned["custom_fields"]["Welcome_Message"] = personalized_messages["welcome_message"]
+            if personalized_messages.get("closing_message"):
+                lead_cleaned["custom_fields"]["Closing_Message"] = personalized_messages["closing_message"]
+                
         except Exception as e:
-            print(f"Error generating AI messages for {lead.get('email')}: {e}. Falling back to template.")
+            print(f"Error generating personalized messages for lead {lead_cleaned.get('email', 'unknown')}: {str(e)}")
+            # Continue with template messages if LLM fails
             template_messages = generate_template_welcome_closing_messages(lead_cleaned)
             if "custom_fields" not in lead_cleaned:
                 lead_cleaned["custom_fields"] = {}
-            lead_cleaned["custom_fields"]["Welcome_Message"] = template_messages["welcome_message"]
-            lead_cleaned["custom_fields"]["Closing_Message"] = template_messages["closing_message"]
+            if template_messages.get("welcome_message"):
+                lead_cleaned["custom_fields"]["Welcome_Message"] = template_messages["welcome_message"]
+            if template_messages.get("closing_message"):
+                lead_cleaned["custom_fields"]["Closing_Message"] = template_messages["closing_message"]
         
-        return lead_cleaned
-
-    # Create a list of concurrent tasks for AI processing
-    tasks = [process_lead(lead.dict()) for lead in request.lead_list]
-    processed_leads = await asyncio.gather(*tasks)
-
-    # Prepare the final request data for Smartlead
-    request_data = {
-        "lead_list": processed_leads,
-        "settings": request.settings.dict() if request.settings else LeadSettings().dict()
-    }
+        # Clean up custom_fields - remove None values and empty strings
+        if "custom_fields" in lead_cleaned:
+            custom_fields = lead_cleaned["custom_fields"]
+            if custom_fields:
+                custom_fields_cleaned = {k: v for k, v in custom_fields.items() if v is not None and v != ""}
+                if custom_fields_cleaned:
+                    lead_cleaned["custom_fields"] = custom_fields_cleaned
+                else:
+                    lead_cleaned.pop("custom_fields", None)
+            else:
+                lead_cleaned.pop("custom_fields", None)
+        
+        lead.clear()
+        lead.update(lead_cleaned)
+    
+    request_data["lead_list"] = [lead for lead in request_data["lead_list"] if lead]
+    
+    if not request_data["lead_list"]:
+        raise HTTPException(status_code=400, detail="No valid leads to add.")
+    
+    if "settings" not in request_data or request_data["settings"] is None:
+        request_data["settings"] = LeadSettings().dict()
     
     return await call_smartlead_api("POST", f"campaigns/{campaign_id}/leads", data=request_data)
 
@@ -548,39 +446,6 @@ async def add_bulk_leads(campaign_id: int, leads: List[LeadInput]):
     request = AddLeadsRequest(lead_list=leads)
     return await add_leads_to_campaign(campaign_id, request)
 
-@app.post("/campaigns/{campaign_id}/leads-and-sequences", response_model=Dict[str, Any], tags=["Leads"])
-async def add_leads_and_generate_sequences(campaign_id: int, request: AddLeadsAndSequencesRequest):
-    """Add leads to campaign and immediately generate informed sequences using their data"""
-    
-    # Step 1: Add leads with personalized messages
-    leads_request = AddLeadsRequest(lead_list=request.lead_list, settings=request.settings)
-    leads_result = await add_leads_to_campaign(campaign_id, leads_request)
-    
-    # Step 2: Fetch job details and generate informed sequences
-    try:
-        job = fetch_job_by_id(request.job_id)
-        job_description = build_job_description(job)
-        generated_sequences = await generate_sequences_with_llm(job_description, campaign_id)
-        save_request = SaveSequencesRequest(sequences=generated_sequences)
-        sequences_result = await call_smartlead_api("POST", f"campaigns/{campaign_id}/sequences", data=save_request.dict())
-        
-    except Exception as e:
-        print(f"Error generating sequences after adding leads: {str(e)}")
-        # Fallback to generic sequences
-        job = fetch_job_by_id(request.job_id)
-        job_description = build_job_description(job)
-        generated_sequences = await generate_sequences_with_llm(job_description)
-        save_request = SaveSequencesRequest(sequences=generated_sequences)
-        sequences_result = await call_smartlead_api("POST", f"campaigns/{campaign_id}/sequences", data=save_request.dict())
-    
-    return {
-        "ok": True,
-        "message": "Leads added and informed sequences generated successfully",
-        "leads_result": leads_result,
-        "sequences_result": sequences_result,
-        "generated_sequences": [seq for seq in generated_sequences]
-    }
-
 @app.post("/campaigns/{campaign_id}/leads/{lead_id}/resume", response_model=Dict[str, Any], tags=["Leads"])
 async def resume_lead_by_campaign_id(campaign_id: int, lead_id: int, request: ResumeLeadRequest):
     """Resume Lead By Campaign ID"""
@@ -708,28 +573,17 @@ async def save_campaign_sequences(campaign_id: int, request: SaveSequencesReques
     """Save Campaign Sequence"""
     return await call_smartlead_api("POST", f"campaigns/{campaign_id}/sequences", data=request.dict())
 
-# *** MODIFIED: generate_campaign_sequences now uses the corrected AI function ***
 @app.post("/campaigns/{campaign_id}/sequences/generate", response_model=Dict[str, Any], tags=["Sequences"])
 async def generate_campaign_sequences(campaign_id: int, request: GenerateSequencesRequest):
-    """Generate a campaign sequence template using AI that leverages personalized custom fields."""
-    job_id = request.job_id
-    
-    # Fetch job details from database
-    job = fetch_job_by_id(job_id)
-    
-    # Build comprehensive job description from job details
-    job_description = build_job_description(job)
-    
-    # Generate the smart template
-    generated_sequences = await generate_sequences_with_llm(job_description, campaign_id)
-    
-    # Save the template to the campaign
+    """Generate Campaign Sequences using LLM"""
+    job_description = request.job_description
+    generated_sequences = await generate_sequences_with_llm(job_description)
     save_request = SaveSequencesRequest(sequences=generated_sequences)
     result = await call_smartlead_api("POST", f"campaigns/{campaign_id}/sequences", data=save_request.dict())
     
     return {
         "ok": True,
-        "message": "Sequence template generated and saved successfully. It will use personalized fields for each lead.",
+        "message": "Sequences generated and saved successfully",
         "generated_sequences": [seq for seq in generated_sequences],
         "save_result": result
     }
@@ -796,6 +650,11 @@ async def save_email_account(account: Dict[str, Any]):
     """Create an Email Account"""
     return await call_smartlead_api("POST", "email-accounts/save", data=account)
 
+@app.post("/email-accounts/reconnect-failed-email-accounts", response_model=Dict[str, Any], tags=["Email Accounts"])
+async def reconnect_failed_email_accounts(body: Optional[Dict] = {}):
+    """Reconnect failed email accounts"""
+    return await call_smartlead_api("POST", "email-accounts/reconnect-failed-email-accounts", data={})
+
 @app.get("/email-accounts/{account_id}", response_model=EmailAccount, tags=["Email Accounts"])
 async def get_email_account(account_id: int):
     """Fetch Email Account By ID"""
@@ -807,9 +666,9 @@ async def update_email_account(account_id: int, payload: Dict[str, Any]):
     return await call_smartlead_api("POST", f"email-accounts/{account_id}", data=payload)
 
 @app.post("/email-accounts/{account_id}/warmup", response_model=Any, tags=["Email Accounts"])
-async def set_warmup(account_id: int, payload: Dict[str, Any]):
+async def set_warmup(account_id: int, payload: WarmupSettingsRequest):
     """Add/Update Warmup To Email Account"""
-    return await call_smartlead_api("POST", f"email-accounts/{account_id}/warmup", data=payload)
+    return await call_smartlead_api("POST", f"email-accounts/{account_id}/warmup", data=payload.dict(exclude_none=True))
 
 @app.get("/email-accounts/{account_id}/warmup-stats", response_model=Any, tags=["Email Accounts"])
 async def get_warmup_stats(account_id: int):
@@ -831,11 +690,6 @@ async def remove_campaign_email_accounts(campaign_id: int, payload: Dict[str, An
     """Remove Email Account From A Campaign"""
     return await call_smartlead_api("DELETE", f"campaigns/{campaign_id}/email-accounts", data=payload)
 
-@app.post("/email-accounts/reconnect-failed-email-accounts", response_model=Dict[str, Any], tags=["Email Accounts"])
-async def reconnect_failed_email_accounts():
-    """Reconnect failed email accounts"""
-    return await call_smartlead_api("POST", "email-accounts/reconnect-failed-email-accounts")
-
 # ============================================================================
 # UTILITY ENDPOINTS
 # ============================================================================
@@ -880,16 +734,6 @@ async def api_info():
         "timestamp": datetime.now().isoformat()
     }
 
-@app.get("/jobs", response_model=List[Dict[str, Any]], tags=["Jobs"])
-async def get_available_jobs(limit: int = Query(10, ge=1, le=100, description="Number of jobs to return")):
-    """List available jobs from the database"""
-    return list_available_jobs(limit)
-
-@app.get("/jobs/{job_id}", response_model=Job, tags=["Jobs"])
-async def get_job_by_id(job_id: str):
-    """Get job details by ID"""
-    return fetch_job_by_id(job_id)
-
 # ============================================================================
 # AI SEQUENCE GENERATION FUNCTIONS
 # ============================================================================
@@ -911,204 +755,427 @@ async def generate_welcome_closing_messages(lead_data: Dict[str, Any]) -> Dict[s
             return generate_template_welcome_closing_messages(lead_data)
         
         llm = ChatOpenAI(
-            model="gpt-4o",
+            model="gpt-4o-mini",
             temperature=0.7,
             openai_api_key=openai_api_key
         )
-        str_llm = llm.with_structured_output(structure)
+        str_llm = llm.with_structured_output(structure, method="function_calling")
         
+        # Extract relevant information from lead data
         first_name = lead_data.get("first_name", "")
+        last_name = lead_data.get("last_name", "")
         company_name = lead_data.get("company_name", "")
+        location = lead_data.get("location", "")
         title = lead_data.get("custom_fields", {}).get("Title", "")
+        linkedin_profile = lead_data.get("linkedin_profile", "")
+        
+        # Create a summary of the candidate's background
+        candidate_info = f"""
+        Name: {first_name}
+        Company: {company_name}
+        Location: {location}
+        Title: {title}
+        LinkedIn: {linkedin_profile}
+        """
+        
+        system_prompt = """You are an expert recruiter who creates personalized welcome and closing messages for email campaigns.
         
-        candidate_info = f"Name: {first_name}, Company: {company_name}, Title: {title}"
+        Based on the candidate's information, generate:
+        1. A personalized welcome message (2-3 sentences) starting with "Hi first_name then change the line using <br> tag and continue with a friendly introduction about their background/company/role.
+        2. A personalized closing message (1-2 sentences)
+        
+        Requirements:
+        - Professional but friendly tone
+        - Reference their specific background/company/role when possible
+        - Keep messages concise and engaging
+        - Make them feel valued and understood
+         
+        IMPORTANT: Respond with ONLY valid JSON. No additional text."""
         
-        system_prompt = """You are an expert recruiter creating personalized messages. Generate a 2-sentence welcome message and a 1-sentence closing message. For welcome start with Hi name then change the line with <br> tag and then write the welcome message. Be professional and friendly and sound like real human recruitor. Reference their background. Respond with ONLY valid JSON."""
         prompt_template = ChatPromptTemplate.from_messages([
             ("system", system_prompt),
-            ("human", "Generate messages for this candidate: {candidate_info}")
+            ("human", "Generate personalized messages for this candidate: {candidate_info}")
         ])
         
         messages = prompt_template.format_messages(candidate_info=candidate_info)
         response = await str_llm.ainvoke(messages)
         
-        return {
-            "welcome_message": response.welcome_message,
-            "closing_message": response.closing_message
-        }
+        try:
+            
+            return {
+                "welcome_message": response.welcome_message,
+                "closing_message": response.closing_message
+            }
+            
+        except Exception as parse_error:
+            print(f"JSON parsing failed for welcome/closing messages: {parse_error}")
+            return generate_template_welcome_closing_messages(lead_data)
+        
     except Exception as e:
         print(f"Error generating welcome/closing messages with LLM: {str(e)}")
         return generate_template_welcome_closing_messages(lead_data)
 
 def generate_template_welcome_closing_messages(lead_data: Dict[str, Any]) -> Dict[str, str]:
     """Generate template-based welcome and closing messages as fallback"""
-    first_name = lead_data.get("first_name", "there")
-    welcome_message = f"Hi {first_name}, I came across your profile and was impressed by your background."
-    closing_message = f"Looking forward to connecting with you, {first_name}!"
-    return {"welcome_message": welcome_message, "closing_message": closing_message}
-
-# *** MODIFIED: generate_sequences_with_llm now creates a smart template ***
-async def generate_sequences_with_llm(job_description: str, campaign_id: Optional[int] = None) -> List[CampaignSequence]:
-    """Generate an email sequence template using LangChain and OpenAI, optionally informed by campaign lead data."""
     
-    class EmailContent(BaseModel):
+    first_name = lead_data.get("first_name", "")
+    company_name = lead_data.get("company_name", "")
+    title = lead_data.get("custom_fields", {}).get("Title", "")
+    
+    # Personalized welcome message
+    if first_name and company_name:
+        welcome_message = f"Hi {first_name}, I came across your profile and was impressed by your work at {company_name}."
+    elif first_name:
+        welcome_message = f"Hi {first_name}, I came across your profile and was impressed by your background."
+    elif company_name:
+        welcome_message = f"Hi there, I came across your profile and was impressed by your work at {company_name}."
+    else:
+        welcome_message = "Hi there, I came across your profile and was impressed by your background."
+    
+    # Personalized closing message
+    if first_name:
+        closing_message = f"Looking forward to connecting with you, {first_name}!"
+    else:
+        closing_message = "Looking forward to connecting with you!"
+    
+    return {
+        "welcome_message": welcome_message,
+        "closing_message": closing_message
+    }
+
+async def generate_sequences_with_llm(job_description: str) -> List[CampaignSequence]:
+    class email_seq(BaseModel):
         subject: str = Field(description="Subject line for the email")
-        body: str = Field(description="Body of the email, using placeholders")
+        body: str = Field(description="Body of the email")
+    class structure(BaseModel):
+        introduction: email_seq = Field(description="Email sequence for sequence 1 asking for consent and interest in the role")
+        email_sequence_2: email_seq = Field(description="Email sequence for sequence 2 following up on updates and next steps")
+        email_sequence_3: email_seq = Field(description="Email sequence for sequence 3 Another variant on following up on updates and next steps")
 
-    class SequenceStructure(BaseModel):
-        introduction: EmailContent
-        follow_up_1: EmailContent
-        follow_up_2: EmailContent
 
+
+    """Generate email sequences using LangChain and OpenAI based on job description"""
+    
     if not LANGCHAIN_AVAILABLE:
-        return generate_template_sequences(job_description)
+        return await generate_template_sequences(job_description)
     
     try:
         openai_api_key = os.getenv("OPENAI_API_KEY")
         if not openai_api_key:
             print("Warning: OPENAI_API_KEY not set. Using template sequences.")
-            return generate_template_sequences(job_description)
+            return await generate_template_sequences(job_description)
         
-        # If campaign_id is provided, fetch lead data to inform the template
-        lead_context = ""
-        if campaign_id:
-            try:
-                leads_response = await call_smartlead_api("GET", f"campaigns/{campaign_id}/leads", params={"limit": 10})
-                campaign_leads = leads_response.get("leads", []) if isinstance(leads_response, dict) else leads_response
-                
-                if campaign_leads:
-                    # Sample lead data to inform template generation
-                    sample_leads = campaign_leads[:3]
-                    lead_info = []
-                    for lead in sample_leads:
-                        custom_fields = lead.get("custom_fields", {})
-                        lead_info.append({
-                            "first_name": lead.get("first_name", ""),
-                            "company": lead.get("company_name", ""),
-                            "title": custom_fields.get("Title", ""),
-                            "welcome_msg": custom_fields.get("Welcome_Message", ""),
-                            "closing_msg": custom_fields.get("Closing_Message", "")
-                        })
-                    
-                    lead_context = f"\n\nCampaign Lead Context (sample of {len(campaign_leads)} leads):\n{json.dumps(lead_info, indent=2)}"
-                    
-            except Exception as e:
-                print(f"Could not fetch lead data for campaign {campaign_id}: {e}")
+        llm = ChatOpenAI(
+            model="gpt-4o-mini",
+            temperature=0.7,
+            openai_api_key=openai_api_key
+        )
+        str_llm = llm.with_structured_output(structure, method="function_calling")
         
-        llm = ChatOpenAI(model="gpt-4o", temperature=0.7, openai_api_key=openai_api_key)
-        structured_llm = llm.with_structured_output(SequenceStructure)
+        system_prompt = """You are an expert email sequence template generator for recruitment campaigns.
+
+        Generate ONLY the subject lines and email body content for 3 professional email sequences.
+        Write the email on behalf of Ali Taghikhani, CEO SRN.
+
+        Use the following placeholders in your templates, EXACTLY as written:
+        - `{{first_name}}`
+        - `{{company}}`
+        - `{{title}}`
+        - `{{Welcome_Message}}`
+        - `{{Closing_Message}}`
+
+        Email Sequence Structure:
+        1. INTRODUCTION (Day 1): Start the email with `{{Welcome_Message}}`. Ask for consent and interest in the role. End the email with `{{Closing_Message}}` followed by the sender's name and title.
+        2. OUTREACH (Day 3): Provide detailed job information. This is a follow-up, so it should not have a subject line.
+        3. FOLLOW-UP (Day 5): Another follow-up on updates and next steps. Also no subject line.
+
+        Requirements:
+        - The first sequence must start with `{{Welcome_Message}}` and end with `{{Closing_Message}}`.
+        - Always end the email with Best regards
+        - The second and third sequences are follow-ups and should not have a subject line.
+        - All emails should be HTML formatted with proper `<br>` tags.
+        - Professional but friendly tone.
+        - Include clear call-to-actions.
+        - Focus on building consent and trust.
+
+        IMPORTANT: Respond with ONLY valid JSON. No additional text."""
         
-        system_prompt = """You are an expert email sequence template generator for recruitment campaigns on behalf of 'Ali Taghikhani, CEO SRN'.
-
-Your task is to generate a 3-step email sequence template for a given job description.
- Email Sequence Structure:
-        1. INTRODUCTION (Day 1): Ask for consent and interest in the role, In the starting use the welcome message placeholder after the salutation, and in the end use closing message template along with the name and title of sender
-        2. OUTREACH (Day 3): Provide detailed job information
-        3. FOLLOW-UP (Day 5): Follow up on updates and next steps
- Requirements:
-        - First sequence will only ask about the consent and interest in the role, no other information is needed.
-        - Second and third sequences are follow-ups (no subject line needed)  in the 3rd sequence try providing some information about the role and the company.
-        - All emails should be HTML formatted with proper <br> tags
-        - Professional but friendly tone
-        - Include clear call-to-actions
-        - Focus on building consent and trust
-
-**CRITICAL FORMATTING RULES:**
-1.  **PLACEHOLDER FORMAT IS ESSENTIAL:** You MUST use double curly braces for all placeholders.
-    -   **CORRECT:** `{{first_name}}`
-    -   **INCORRECT:** `{first_name}` or `[first_name]` or `<first_name>`
-2.  **REQUIRED PLACEHOLDERS:** You MUST include `{{Welcome_Message}}` and `{{Closing_Message}}` in the first email. You should also use `{{first_name}}` in follow-ups.
-3.  **FIRST EMAIL STRUCTURE:** The first email's body MUST begin with `{{Welcome_Message}}` and end with `{{Closing_Message}}`.
-4.  **SIGNATURE:** End EVERY email body with `<br><br>Best regards`.
-5.  **EXAMPLE BODY:**
-    ```html
-    {{Welcome_Message}}<br><br>I saw your profile and was impressed. We have an opening for a Senior Engineer that seems like a great fit.<br><br>{{Closing_Message}}<br><br>Best regards,<br>Ali Taghikhani<br>CEO, SRN>
-    ```
-Always try to start the message with the salutation except for the first email.
-If lead context is provided, use it to make the templates more relevant.
-Respond with ONLY a valid JSON object matching the required structure.
-        """
-        
-        prompt = ChatPromptTemplate.from_messages([
+        prompt_template = ChatPromptTemplate.from_messages([
             ("system", system_prompt),
-            ("human", "Generate the 3-step email sequence template for this job description: {job_description}{lead_context}")
+            ("human", "Generate email content for this job description: {job_description}")
         ])
         
-        # By using .partial, we tell LangChain to treat the Smartlead placeholders as literals
-        # and not expect them as input variables. This is the correct way to handle this.
-        partial_prompt = prompt.partial(
-            first_name="", 
-            company_name="",
-            **{"Welcome_Message": "", "Closing_Message": "", "Title": ""}
-        )
+        messages = prompt_template.format_messages(job_description=job_description)
+        response = await str_llm.ainvoke(messages)
+        
+        try:
+            # Handle the response structure correctly
+            sequences = []
+            
+            # Sequence 1: Introduction with A/B variants
+            if hasattr(response, 'introduction') and response.introduction:
+                # Check if body is a string or dict
+                intro_body = response.introduction.body
+                if isinstance(intro_body, dict):
+                    # If it's a dict, extract the content
+                    intro_body = str(intro_body)
+                
+                sequences.append(CampaignSequence(
+                    seq_number=1,
+                    seq_delay_details=SeqDelayDetails(delay_in_days=1),
+                    seq_variants=[
+                        SeqVariant(
+                            subject=response.introduction.subject,
+                            email_body=intro_body,
+                            variant_label="A"
+                        )
+                    ]
+                ))
+            
+            # Sequence 2: Outreach
+            if hasattr(response, 'email_sequence_2') and response.email_sequence_2:
+                seq2_body = response.email_sequence_2.body
+                if isinstance(seq2_body, dict):
+                    seq2_body = str(seq2_body)
+                
+                sequences.append(CampaignSequence(
+                    seq_number=2,
+                    seq_delay_details=SeqDelayDetails(delay_in_days=3),
+                    subject="",
+                    email_body=seq2_body
+                ))
+            
+            # Sequence 3: Follow-up
+            if hasattr(response, 'email_sequence_3') and response.email_sequence_3:
+                seq3_body = response.email_sequence_3.body
+                if isinstance(seq3_body, dict):
+                    seq3_body = str(seq3_body)
+                
+                sequences.append(CampaignSequence(
+                    seq_number=3,
+                    seq_delay_details=SeqDelayDetails(delay_in_days=5),
+                    subject="",
+                    email_body=seq3_body
+                ))
+            
+            # Fill with templates if needed
+            while len(sequences) < 3:
+                if len(sequences) == 0:
+                    sequences.append(CampaignSequence(
+                        seq_number=1,
+                        seq_delay_details=SeqDelayDetails(delay_in_days=1),
+                        seq_variants=[
+                            SeqVariant(
+                                subject=f"Quick question about {job_description}",
+                                email_body=f"""<p>Hi there,<br><br>
+I came across your profile and noticed your experience in {job_description}. 
+I'm reaching out because we have some exciting opportunities that might be a great fit for your background.<br><br>
+Before I share more details, I wanted to ask: Are you currently open to exploring new opportunities in this space?<br><br>
+Would you be interested in hearing more about the roles we have available?<br><br>
+Best regards,<br>
+[Your Name]</p>""",
+                                variant_label="A"
+                            ),
+                            SeqVariant(
+                                subject=f"Interested in {job_description} opportunities?",
+                                email_body=f"""<p>Hello,<br><br>
+I hope this message finds you well. I'm a recruiter specializing in {job_description} positions.<br><br>
+I'd love to connect and share some opportunities that align with your expertise. 
+Are you currently open to exploring new roles in this space?<br><br>
+If so, I can send you specific details about the positions we have available.<br><br>
+Thanks,<br>
+[Your Name]</p>""",
+                                variant_label="B"
+                            )
+                        ]
+                    ))
+                elif len(sequences) == 1:
+                    sequences.append(CampaignSequence(
+                        seq_number=2,
+                        seq_delay_details=SeqDelayDetails(delay_in_days=3),
+                        subject="",
+                        email_body=f"""<p>Hi,<br><br>
+Thanks for your interest! Here are more details about the {job_description} opportunities:<br><br>
+<strong>Role Details:</strong><br>
+• [Specific responsibilities]<br>
+• [Required skills and experience]<br>
+• [Team and company information]<br><br>
+<strong>Benefits:</strong><br>
+• [Compensation and benefits]<br>
+• [Growth opportunities]<br>
+• [Work environment]<br><br>
+Would you be interested in a quick call to discuss this role in more detail?<br><br>
+Best regards,<br>
+[Your Name]</p>"""
+                    ))
+                elif len(sequences) == 2:
+                    sequences.append(CampaignSequence(
+                        seq_number=3,
+                        seq_delay_details=SeqDelayDetails(delay_in_days=5),
+                        subject="",
+                        email_body=f"""<p>Hi,<br><br>
+Just wanted to follow up on the {job_description} opportunity I shared.<br><br>
+Have you had a chance to review the information? I'd love to hear your thoughts and answer any questions.<br><br>
+If you're interested, I can help schedule next steps. If not, no worries at all!<br><br>
+Thanks for your time!<br>
+[Your Name]</p>"""
+                    ))
+            
+            return sequences
+            
+        except Exception as parse_error:
+            print(f"JSON parsing failed: {parse_error}")
+            return await generate_template_sequences(job_description)
+        
+    except Exception as e:
+        print(f"Error generating sequences with LLM: {str(e)}")
+        return await generate_template_sequences(job_description)
 
-        chain = partial_prompt | structured_llm
-        response = await chain.ainvoke({"job_description": job_description, "lead_context": lead_context})
+def create_sequences_from_content(content: dict, job_description: str) -> List[CampaignSequence]:
+    """Create CampaignSequence objects from parsed LLM content"""
+    
+    sequences = []
+    
+    # Sequence 1: Introduction with A/B variants
+    if "sequence1_variant_a" in content and "sequence1_variant_b" in content:
+        variants = []
         
-        # Post-process the AI's response to enforce double curly braces.
-        # This is a robust way to fix the AI's tendency to use single braces.
-        def fix_braces(text: str) -> str:
-            if not text:
-                return ""
-            # This regex finds all occurrences of `{...}` that are not `{{...}}`
-            # and replaces them with `{{...}}`.
-            return re.sub(r'{([^{}\n]+)}', r'{{\1}}', text)
-
-        sequences = [
-            CampaignSequence(
+        if "sequence1_variant_a" in content:
+            var_a = content["sequence1_variant_a"]
+            variants.append(SeqVariant(
+                subject=var_a.get("subject", f"Quick question about {job_description}"),
+                email_body=var_a.get("body", ""),
+                variant_label="A"
+            ))
+        
+        if "sequence1_variant_b" in content:
+            var_b = content["sequence1_variant_b"]
+            variants.append(SeqVariant(
+                subject=var_b.get("subject", f"Interested in {job_description} opportunities?"),
+                email_body=var_b.get("body", ""),
+                variant_label="B"
+            ))
+        
+        sequences.append(CampaignSequence(
+            seq_number=1,
+            seq_delay_details=SeqDelayDetails(delay_in_days=1),
+            seq_variants=variants
+        ))
+    
+    # Sequence 2: Outreach
+    if "sequence2" in content:
+        seq2_body = content["sequence2"].get("body", "")
+        sequences.append(CampaignSequence(
+            seq_number=2,
+            seq_delay_details=SeqDelayDetails(delay_in_days=3),
+            subject="",
+            email_body=seq2_body
+        ))
+    
+    # Sequence 3: Follow-up
+    if "sequence3" in content:
+        seq3_body = content["sequence3"].get("body", "")
+        sequences.append(CampaignSequence(
+            seq_number=3,
+            seq_delay_details=SeqDelayDetails(delay_in_days=5),
+            subject="",
+            email_body=seq3_body
+        ))
+    
+    # Fill with templates if needed
+    while len(sequences) < 3:
+        if len(sequences) == 0:
+            sequences.append(CampaignSequence(
                 seq_number=1,
                 seq_delay_details=SeqDelayDetails(delay_in_days=1),
-                seq_variants=[SeqVariant(
-                    subject=fix_braces(response.introduction.subject), 
-                    email_body=fix_braces(response.introduction.body), 
-                    variant_label="A"
-                )]
-            ),
-            CampaignSequence(
+                seq_variants=[
+                    SeqVariant(
+                        subject=f"Quick question about {job_description}",
+                        email_body=f"""<p>Hi there,<br><br>
+I came across your profile and noticed your experience in {job_description}. 
+I'm reaching out because we have some exciting opportunities that might be a great fit for your background.<br><br>
+Before I share more details, I wanted to ask: Are you currently open to exploring new opportunities in this space?<br><br>
+Would you be interested in hearing more about the roles we have available?<br><br>
+Best regards,<br>
+[Your Name]</p>""",
+                        variant_label="A"
+                    ),
+                    SeqVariant(
+                        subject=f"Interested in {job_description} opportunities?",
+                        email_body=f"""<p>Hello,<br><br>
+I hope this message finds you well. I'm a recruiter specializing in {job_description} positions.<br><br>
+I'd love to connect and share some opportunities that align with your expertise. 
+Are you currently open to exploring new roles in this space?<br><br>
+If so, I can send you specific details about the positions we have available.<br><br>
+Thanks,<br>
+[Your Name]</p>""",
+                        variant_label="B"
+                    )
+                ]
+            ))
+        elif len(sequences) == 1:
+            sequences.append(CampaignSequence(
                 seq_number=2,
                 seq_delay_details=SeqDelayDetails(delay_in_days=3),
-                subject="", # Same thread
-                email_body=fix_braces(response.follow_up_1.body)
-            ),
-            CampaignSequence(
+                subject="",
+                email_body=f"""<p>Hi,<br><br>
+Thanks for your interest! Here are more details about the {job_description} opportunities:<br><br>
+<strong>Role Details:</strong><br>
+• [Specific responsibilities]<br>
+• [Required skills and experience]<br>
+• [Team and company information]<br><br>
+<strong>Benefits:</strong><br>
+• [Compensation and benefits]<br>
+• [Growth opportunities]<br>
+• [Work environment]<br><br>
+Would you be interested in a quick call to discuss this role in more detail?<br><br>
+Best regards,<br>
+[Your Name]</p>"""
+            ))
+        elif len(sequences) == 2:
+            sequences.append(CampaignSequence(
                 seq_number=3,
                 seq_delay_details=SeqDelayDetails(delay_in_days=5),
-                subject="", # Same thread
-                email_body=fix_braces(response.follow_up_2.body)
-            )
-        ]
-        return sequences
-        
-    except Exception as e:
-        print(f"Error generating sequences with LLM: {str(e)}. Falling back to template.")
-        return generate_template_sequences(job_description)
-
-def generate_template_sequences(job_description: str) -> List[CampaignSequence]:
-    """Generate template-based sequences as fallback, using correct placeholders."""
+                subject="",
+                email_body=f"""<p>Hi,<br><br>
+Just wanted to follow up on the {job_description} opportunity I shared.<br><br>
+Have you had a chance to review the information? I'd love to hear your thoughts and answer any questions.<br><br>
+If you're interested, I can help schedule next steps. If not, no worries at all!<br><br>
+Thanks for your time!<br>
+[Your Name]</p>"""
+            ))
     
-    # This is the corrected structure for the first email
-    first_email_body = f"""<p>{{{{custom.Welcome_Message}}}}<br><br>
-I'm reaching out because we have some exciting opportunities for a {job_description} that might be a great fit for your background. Are you currently open to exploring new roles?<br><br>
-{{{{custom.Closing_Message}}}}<br><br>
-Best regards,<br>Ali Taghikhani<br>CEO, SRN</p>"""
-
-    follow_up_1_body = f"""<p>Hi {{{{first_name}}}},<br><br>
-Just wanted to follow up on my previous email regarding the {job_description} role. I'd love to hear your thoughts when you have a moment.<br><br>
-Best regards,<br>Ali Taghikhani<br>CEO, SRN</p>"""
-
-    follow_up_2_body = f"""<p>Hi {{{{first_name}}}},<br><br>
-Checking in one last time about the {job_description} opportunity. If the timing isn't right, no worries at all. Otherwise, I look forward to hearing from you.<br><br>
-Best regards,<br>Ali Taghikhani<br>CEO, SRN</p>"""
+    return sequences
 
+async def generate_template_sequences(job_description: str) -> List[CampaignSequence]:
+    """Generate template-based sequences as fallback"""
+    
     sequences = [
         CampaignSequence(
             seq_number=1,
             seq_delay_details=SeqDelayDetails(delay_in_days=1),
             seq_variants=[
                 SeqVariant(
-                    subject=f"Regarding a {job_description} opportunity",
-                    email_body=first_email_body,
+                    subject=f"Quick question about {job_description}",
+                    email_body=f"""<p>Hi there,<br><br>
+I came across your profile and noticed your experience in {job_description}. 
+I'm reaching out because we have some exciting opportunities that might be a great fit for your background.<br><br>
+Before I share more details, I wanted to ask: Are you currently open to exploring new opportunities in this space?<br><br>
+Would you be interested in hearing more about the roles we have available?<br><br>
+Best regards,<br>
+[Your Name]</p>""",
                     variant_label="A"
+                ),
+                SeqVariant(
+                    subject=f"Interested in {job_description} opportunities?",
+                    email_body=f"""<p>Hello,<br><br>
+I hope this message finds you well. I'm a recruiter specializing in {job_description} positions.<br><br>
+I'd love to connect and share some opportunities that align with your expertise. 
+Are you currently open to exploring new roles in this space?<br><br>
+If so, I can send you specific details about the positions we have available.<br><br>
+Thanks,<br>
+[Your Name]</p>""",
+                    variant_label="B"
                 )
             ]
         ),
@@ -1116,15 +1183,33 @@ Best regards,<br>Ali Taghikhani<br>CEO, SRN</p>"""
             seq_number=2,
             seq_delay_details=SeqDelayDetails(delay_in_days=3),
             subject="",
-            email_body=follow_up_1_body
+            email_body=f"""<p>Hi,<br><br>
+Thanks for your interest! Here are more details about the {job_description} opportunities:<br><br>
+<strong>Role Details:</strong><br>
+• [Specific responsibilities]<br>
+• [Required skills and experience]<br>
+• [Team and company information]<br><br>
+<strong>Benefits:</strong><br>
+• [Compensation and benefits]<br>
+• [Growth opportunities]<br>
+• [Work environment]<br><br>
+Would you be interested in a quick call to discuss this role in more detail?<br><br>
+Best regards,<br>
+[Your Name]</p>"""
         ),
-        CampaignSequence(
+                CampaignSequence(
             seq_number=3,
             seq_delay_details=SeqDelayDetails(delay_in_days=5),
             subject="",
-            email_body=follow_up_2_body
+            email_body=f"""<p>Hi,<br><br>
+Just wanted to follow up on the {job_description} opportunity I shared.<br><br>
+Have you had a chance to review the information? I'd love to hear your thoughts and answer any questions.<br><br>
+If you're interested, I can help schedule next steps. If not, no worries at all!<br><br>
+Thanks for your time!<br>
+[Your Name]</p>"""
         )
     ]
+    
     return sequences
 
 # ============================================================================
@@ -1139,12 +1224,16 @@ class RateLimiter:
     
     def is_allowed(self) -> bool:
         now = time.time()
+        # Remove old requests outside the window
         self.requests = [req_time for req_time in self.requests if now - req_time < self.window_seconds]
+        
         if len(self.requests) >= self.max_requests:
             return False
+        
         self.requests.append(now)
         return True
 
+# Global rate limiter instance
 rate_limiter = RateLimiter(max_requests=10, window_seconds=2)
 
 @app.middleware("http")
@@ -1153,8 +1242,13 @@ async def rate_limit_middleware(request: Request, call_next):
     if not rate_limiter.is_allowed():
         return JSONResponse(
             status_code=429,
-            content={"error": "Rate limit exceeded"}
+            content={
+                "error": "Rate limit exceeded",
+                "message": "Too many requests. Please wait before making another request.",
+                "retry_after": 2
+            }
         )
+    
     response = await call_next(request)
     return response
 
@@ -1167,7 +1261,12 @@ async def http_exception_handler(request: Request, exc: HTTPException):
     """Custom HTTP exception handler"""
     return JSONResponse(
         status_code=exc.status_code,
-        content={"error": True, "message": exc.detail}
+        content={
+            "error": True,
+            "message": exc.detail,
+            "status_code": exc.status_code,
+            "timestamp": datetime.now().isoformat()
+        }
     )
 
 @app.exception_handler(Exception)
@@ -1176,9 +1275,10 @@ async def general_exception_handler(request: Request, exc: Exception):
     return JSONResponse(
         status_code=500,
         content={
-            "error": True, 
+            "error": True,
             "message": "Internal server error",
-            "detail": str(exc) if os.getenv("DEBUG") else None
+            "detail": str(exc) if os.getenv("DEBUG", "false").lower() == "true" else "An unexpected error occurred",
+            "timestamp": datetime.now().isoformat()
         }
     )
 
@@ -1192,11 +1292,68 @@ def custom_openapi():
     
     openapi_schema = get_openapi(
         title="Smartlead API - Complete Integration",
-        version="2.1.0",
-        description="A comprehensive FastAPI wrapper for the Smartlead email automation platform.",
+        version="2.0.0",
+        description="""
+        # Smartlead API - Complete Integration
+        
+        A comprehensive FastAPI wrapper for the Smartlead email automation platform.
+        
+        ## Features
+        - **Campaign Management**: Create, update, and manage email campaigns
+        - **Lead Management**: Add, update, and manage leads across campaigns with AI-powered personalization
+        - **Sequence Management**: Create and manage email sequences with AI generation
+        - **Webhook Management**: Set up webhooks for real-time notifications
+        - **Analytics**: Get detailed campaign analytics and statistics
+        - **Email Account Management**: Manage email accounts and warmup
+        - **Client Management**: Handle client accounts and permissions
+        
+        ## AI-Powered Personalization
+        When adding leads to campaigns, the API automatically generates personalized welcome and closing messages using LLM (Language Model) based on candidate details. These messages are added to the custom_fields as:
+        - `Welcome_Message`: Personalized greeting based on candidate's background
+        - `Closing_Message`: Personalized closing statement
+        
+        ## Lead Schema
+        The lead schema supports the following structure:
+        ```json
+        {
+          "lead_list": [
+            {
+              "first_name": "Cristiano",
+              "last_name": "Ronaldo", 
+              "email": "[email protected]",
+              "phone_number": "0239392029",
+              "company_name": "Manchester United",
+              "website": "mufc.com",
+              "location": "London",
+              "custom_fields": {
+                "Title": "Regional Manager",
+                "First_Line": "Loved your recent post about remote work on Linkedin"
+              },
+              "linkedin_profile": "http://www.linkedin.com/in/cristianoronaldo",
+              "company_url": "mufc.com"
+            }
+          ],
+          "settings": {
+            "ignore_global_block_list": true,
+            "ignore_unsubscribe_list": true,
+            "ignore_duplicate_leads_in_other_campaign": false
+          }
+        }
+        ```
+        
+        ## Authentication
+        All requests require a Smartlead API key passed as a query parameter: `?api_key=YOUR_API_KEY`
+        
+        ## Rate Limits
+        - 10 requests per 2 seconds (enforced automatically)
+        
+        ## Base URL
+        - Smartlead API: `https://server.smartlead.ai/api/v1`
+        """,
         routes=app.routes,
     )
     
+    # Add custom tags
     openapi_schema["tags"] = [
         {"name": "Campaigns", "description": "Campaign management operations"},
         {"name": "Leads", "description": "Lead management operations"},
@@ -1221,11 +1378,16 @@ app.openapi = custom_openapi
 if __name__ == "__main__":
     import uvicorn
     
-    print("Starting Smartlead API - Complete Integration")
+    print("�� Starting Smartlead API - Complete Integration")
+    print(f"�� API Documentation: http://localhost:8000/docs")
+    print(f"📖 ReDoc Documentation: http://localhost:8000/redoc")
+    print(f"�� Smartlead Base URL: {SMARTLEAD_BASE_URL}")
+    print(f"⚡ Rate Limit: 10 requests per 2 seconds")
+    
     uvicorn.run(
-        "__main__:app",
+        "updated-final:app",
         host="0.0.0.0",
         port=8000,
         reload=True,
         log_level="info"
-    )
+    )