import os
import uuid
import duckdb
import pandas as pd
from dotenv import load_dotenv
from datetime import datetime, timedelta, timezone

load_dotenv()

est_offset = timedelta(hours=-4)

# Connect to the DuckDB database
conn = duckdb.connect(f"md:?motherduck_token={os.getenv('MOTHERDUCK_TOKEN')}")

# Utility functions for interacting with the database
def create_session(user_id):
    session_id = str(uuid.uuid4())
    query = """
    INSERT INTO SESSIONS (session_id, user_id, session_start)
    VALUES (?, ?, ?)
    """
    conn.execute(query, (session_id, user_id, datetime.now(timezone(est_offset))))
    return session_id

def end_session(session_id):
    query = """
    UPDATE SESSIONS
    SET session_end = ?
    WHERE session_id = ?
    """
    conn.execute(query, (datetime.now(timezone(est_offset)), session_id))

def get_user_sessions(user_id):
    query = """
    SELECT * FROM SESSIONS
    WHERE user_id = ?
    """
    return conn.execute(query, (user_id,)).fetchdf()

def add_response(session_id, user_id, user_input_text, response_text):
    response_id = str(uuid.uuid4())
    query = """
    INSERT INTO RESPONSES (response_id, session_id, user_id, user_input_text, response_text, created_at)
    VALUES (?, ?, ?, ?, ?, ?)
    """
    conn.execute(query, (response_id, session_id, user_id, user_input_text, response_text, datetime.now(timezone(est_offset))))
    return response_id


def add_agent_response(response_id, agent_name, user_input, agent_response_text):
    agent_response_id = str(uuid.uuid4())
    query = """
    INSERT INTO AGENT_RESPONSES (agent_response_id, response_id, agent_name, user_input, agent_response_text, created_at)
    VALUES (?, ?, ?, ?, ?, ?)
    """
    conn.execute(query, (agent_response_id, response_id, agent_name, user_input, agent_response_text, datetime.now(timezone(est_offset))))
    return agent_response_id

def get_response(response_id):
    query = """
    SELECT * FROM RESPONSES
    WHERE response_id = ?
    """
    return conn.execute(query, (response_id,)).fetchone()

def get_responses_from_session(session_id):
    query = """
    SELECT * FROM RESPONSES
    WHERE session_id = ?
    """
    return conn.execute(query, (session_id,)).fetchdf()

def get_agent_responses(response_id):
    query = """
    SELECT * FROM AGENT_RESPONSES
    WHERE response_id = ?
    """
    return conn.execute(query, (response_id,)).fetchdf()

def add_feedback(response_id, user_id, feedback_score, feedback_text):
    feedback_id = str(uuid.uuid4())
    query = """
    INSERT INTO FEEDBACK (feedback_id, response_id, user_id, feedback_score, feedback_text)
    VALUES (?, ?, ?, ?, ?)
    """
    conn.execute(query, (feedback_id, response_id, user_id, feedback_score, feedback_text))
    return feedback_id

def get_feedback(response_id):
    query = """
    SELECT * FROM FEEDBACK
    WHERE response_id = ?
    """
    return conn.execute(query, (response_id,)).fetchdf()

def get_user_feedback(user_id):
    query = """
    SELECT * FROM FEEDBACK
    WHERE user_id = ?
    """
    return conn.execute(query, (user_id,)).fetchdf()

def get_session_data(session_id):
    # Query to get the combined data from responses, agent_responses, and feedback
    query = """
    SELECT 
        r.user_input_text AS query, 
        ar.agent_name AS agent, 
        ar.agent_response_text AS response, 
        f.feedback_score AS feedback_score, 
        f.feedback_text AS feedback_text,
        r.created_at AS response_time,
        s.session_start AS session_start,
        s.session_end AS session_end
    FROM 
        RESPONSES r
    JOIN 
        AGENT_RESPONSES ar ON r.response_id = ar.response_id
    LEFT JOIN 
        FEEDBACK f ON r.response_id = f.response_id
    JOIN 
        SESSIONS s ON r.session_id = s.session_id
    WHERE 
        r.session_id = ?
    ORDER BY 
        r.created_at, ar.agent_name;
    """
    
    # Execute the query and fetch results into a DataFrame
    session_df = conn.execute(query, (session_id,)).fetchdf()

    if session_df.empty:
        return pd.DataFrame()

    # Format timestamps
    session_df['response_time'] = session_df['response_time'].apply(lambda x: x.strftime('%Y-%m-%d %H:%M:%S'))
    session_df['session_start'] = session_df['session_start'].apply(lambda x: x.strftime('%Y-%m-%d %H:%M:%S'))
    session_df['session_end'] = session_df['session_end'].apply(lambda x: x.strftime('%Y-%m-%d %H:%M:%S') if x else "Ongoing")

    # Combine feedback into a single column if available
    session_df['feedback'] = session_df.apply(
        lambda row: f"{row['feedback_score']} - {row['feedback_text']}" if row['feedback_score'] and row['feedback_text'] else None, 
        axis=1
    )
    
    # Drop the separate feedback columns
    session_df = session_df.drop(columns=['feedback_score', 'feedback_text'])

    # Reorder columns for clarity
    session_df = session_df[['query', 'agent', 'response', 'feedback', 'response_time', 'session_start']]

    return session_df


if __name__ == "__main__":
    id = "adec6d43-f4bb-46ab-887c-3a1d492f727f"
    df = get_session_data(id)
    df.to_csv('session_data.csv', index=False)