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"""
Experiment tracking module with extended database schema.
Handles session management, decision logging, and chat interaction tracking.
"""

import sqlite3
import uuid
import json
from datetime import datetime
from typing import Dict, List, Optional, Any
from dataclasses import dataclass, asdict
from contextlib import contextmanager

DATABASE_PATH = "db/experiment.db"


@dataclass
class SessionData:
    """Represents a participant session."""
    participant_id: str
    session_start: str
    condition_name: str
    initial_portfolio: float
    current_portfolio: float
    scenarios_completed: int = 0
    ai_advice_followed: int = 0
    ai_advice_total: int = 0
    total_chat_queries: int = 0
    proactive_advice_accepted: int = 0
    proactive_advice_dismissed: int = 0
    session_end: Optional[str] = None
    completed: bool = False


@dataclass
class DecisionRecord:
    """Represents a single trading decision."""
    decision_id: str
    participant_id: str
    timestamp: str
    scenario_id: str
    company_symbol: str

    # AI parameters at time of decision
    explanation_depth: int
    communication_style: int
    confidence_framing: int
    risk_bias: int

    # What happened
    ai_recommendation: str
    ai_was_correct: bool
    participant_decision: str
    followed_ai: bool

    # Confidence and timing
    decision_confidence: int
    time_to_decision_ms: int
    time_viewing_ai_advice_ms: int

    # Outcomes
    outcome_percentage: float
    portfolio_before: float
    portfolio_after: float
    trade_amount: float

    # Proactive advice
    proactive_advice_shown: bool
    proactive_advice_engaged: bool


@dataclass
class ChatInteraction:
    """Represents a chat interaction with the AI."""
    interaction_id: str
    participant_id: str
    timestamp: str
    scenario_id: Optional[str]

    # Interaction details
    interaction_type: str  # "proactive", "reactive_query", "follow_up"
    user_query: Optional[str]
    ai_response: str

    # Parameters at time of interaction
    explanation_depth: int
    communication_style: int
    confidence_framing: int
    risk_bias: int

    # Engagement metrics
    response_time_ms: int
    user_engaged: bool  # Did user respond/act on advice
    dismissed: bool  # For proactive advice


@contextmanager
def get_db_connection():
    """Context manager for database connections."""
    conn = sqlite3.connect(DATABASE_PATH)
    conn.row_factory = sqlite3.Row
    try:
        yield conn
        conn.commit()
    finally:
        conn.close()


def init_database():
    """Initialize the database with all required tables."""
    with get_db_connection() as conn:
        cursor = conn.cursor()

        # Sessions table
        cursor.execute("""
            CREATE TABLE IF NOT EXISTS sessions (
                participant_id TEXT PRIMARY KEY,
                session_start TEXT NOT NULL,
                session_end TEXT,
                condition_name TEXT NOT NULL,
                initial_portfolio REAL NOT NULL,
                current_portfolio REAL NOT NULL,
                scenarios_completed INTEGER DEFAULT 0,
                ai_advice_followed INTEGER DEFAULT 0,
                ai_advice_total INTEGER DEFAULT 0,
                total_chat_queries INTEGER DEFAULT 0,
                proactive_advice_accepted INTEGER DEFAULT 0,
                proactive_advice_dismissed INTEGER DEFAULT 0,
                completed INTEGER DEFAULT 0
            )
        """)

        # Decisions table
        cursor.execute("""
            CREATE TABLE IF NOT EXISTS decisions (
                decision_id TEXT PRIMARY KEY,
                participant_id TEXT NOT NULL,
                timestamp TEXT NOT NULL,
                scenario_id TEXT NOT NULL,
                company_symbol TEXT NOT NULL,

                -- AI parameters
                explanation_depth INTEGER,
                communication_style INTEGER,
                confidence_framing INTEGER,
                risk_bias INTEGER,

                -- Decision details
                ai_recommendation TEXT,
                ai_was_correct INTEGER,
                participant_decision TEXT,
                followed_ai INTEGER,

                -- Confidence and timing
                decision_confidence INTEGER,
                time_to_decision_ms INTEGER,
                time_viewing_ai_advice_ms INTEGER,

                -- Outcomes
                outcome_percentage REAL,
                portfolio_before REAL,
                portfolio_after REAL,
                trade_amount REAL,

                -- Proactive advice
                proactive_advice_shown INTEGER,
                proactive_advice_engaged INTEGER,

                FOREIGN KEY (participant_id) REFERENCES sessions(participant_id)
            )
        """)

        # Chat interactions table
        cursor.execute("""
            CREATE TABLE IF NOT EXISTS chat_interactions (
                interaction_id TEXT PRIMARY KEY,
                participant_id TEXT NOT NULL,
                timestamp TEXT NOT NULL,
                scenario_id TEXT,

                -- Interaction details
                interaction_type TEXT NOT NULL,
                user_query TEXT,
                ai_response TEXT NOT NULL,

                -- AI parameters
                explanation_depth INTEGER,
                communication_style INTEGER,
                confidence_framing INTEGER,
                risk_bias INTEGER,

                -- Engagement metrics
                response_time_ms INTEGER,
                user_engaged INTEGER,
                dismissed INTEGER,

                FOREIGN KEY (participant_id) REFERENCES sessions(participant_id)
            )
        """)

        # Trust metrics table (computed per scenario)
        cursor.execute("""
            CREATE TABLE IF NOT EXISTS trust_metrics (
                metric_id TEXT PRIMARY KEY,
                participant_id TEXT NOT NULL,
                scenario_id TEXT NOT NULL,
                timestamp TEXT NOT NULL,

                -- Pre/post confidence
                pre_advice_confidence INTEGER,
                post_advice_confidence INTEGER,
                confidence_change INTEGER,

                -- Behavior indicators
                advice_followed INTEGER,
                time_deliberating_ms INTEGER,
                queries_before_decision INTEGER,

                -- Outcome
                outcome_positive INTEGER,

                FOREIGN KEY (participant_id) REFERENCES sessions(participant_id)
            )
        """)

        # Experiment conditions table (for researcher reference)
        cursor.execute("""
            CREATE TABLE IF NOT EXISTS experiment_conditions (
                condition_name TEXT PRIMARY KEY,
                accuracy_rate REAL,
                proactivity_level INTEGER,
                confidence_framing INTEGER,
                risk_bias INTEGER,
                description TEXT,
                created_at TEXT
            )
        """)


class ExperimentTracker:
    """Main class for tracking experiment data."""

    def __init__(self):
        init_database()

    def create_session(
        self,
        condition_name: str,
        initial_portfolio: float
    ) -> str:
        """Create a new participant session and return the participant ID."""
        participant_id = str(uuid.uuid4())[:8]  # Short ID for display
        session_start = datetime.now().isoformat()

        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute("""
                INSERT INTO sessions (
                    participant_id, session_start, condition_name,
                    initial_portfolio, current_portfolio
                ) VALUES (?, ?, ?, ?, ?)
            """, (
                participant_id, session_start, condition_name,
                initial_portfolio, initial_portfolio
            ))

        return participant_id

    def get_session(self, participant_id: str) -> Optional[Dict]:
        """Retrieve session data for a participant."""
        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute(
                "SELECT * FROM sessions WHERE participant_id = ?",
                (participant_id,)
            )
            row = cursor.fetchone()
            if row:
                return dict(row)
        return None

    def update_session(self, participant_id: str, **kwargs):
        """Update session fields."""
        if not kwargs:
            return

        set_clause = ", ".join(f"{k} = ?" for k in kwargs.keys())
        values = list(kwargs.values()) + [participant_id]

        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute(
                f"UPDATE sessions SET {set_clause} WHERE participant_id = ?",
                values
            )

    def complete_session(self, participant_id: str, final_portfolio: float):
        """Mark a session as completed."""
        self.update_session(
            participant_id,
            session_end=datetime.now().isoformat(),
            current_portfolio=final_portfolio,
            completed=1
        )

    def record_decision(self, record: DecisionRecord):
        """Record a trading decision."""
        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute("""
                INSERT INTO decisions (
                    decision_id, participant_id, timestamp, scenario_id, company_symbol,
                    explanation_depth, communication_style, confidence_framing, risk_bias,
                    ai_recommendation, ai_was_correct, participant_decision, followed_ai,
                    decision_confidence, time_to_decision_ms, time_viewing_ai_advice_ms,
                    outcome_percentage, portfolio_before, portfolio_after, trade_amount,
                    proactive_advice_shown, proactive_advice_engaged
                ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
            """, (
                record.decision_id, record.participant_id, record.timestamp,
                record.scenario_id, record.company_symbol,
                record.explanation_depth, record.communication_style,
                record.confidence_framing, record.risk_bias,
                record.ai_recommendation, int(record.ai_was_correct),
                record.participant_decision, int(record.followed_ai),
                record.decision_confidence, record.time_to_decision_ms,
                record.time_viewing_ai_advice_ms,
                record.outcome_percentage, record.portfolio_before,
                record.portfolio_after, record.trade_amount,
                int(record.proactive_advice_shown), int(record.proactive_advice_engaged)
            ))

        # Update session counters
        session = self.get_session(record.participant_id)
        if session:
            updates = {
                "scenarios_completed": session["scenarios_completed"] + 1,
                "ai_advice_total": session["ai_advice_total"] + 1,
                "current_portfolio": record.portfolio_after
            }
            if record.followed_ai:
                updates["ai_advice_followed"] = session["ai_advice_followed"] + 1
            if record.proactive_advice_shown:
                if record.proactive_advice_engaged:
                    updates["proactive_advice_accepted"] = session["proactive_advice_accepted"] + 1
                else:
                    updates["proactive_advice_dismissed"] = session["proactive_advice_dismissed"] + 1

            self.update_session(record.participant_id, **updates)

    def record_chat_interaction(self, interaction: ChatInteraction):
        """Record a chat interaction."""
        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute("""
                INSERT INTO chat_interactions (
                    interaction_id, participant_id, timestamp, scenario_id,
                    interaction_type, user_query, ai_response,
                    explanation_depth, communication_style, confidence_framing, risk_bias,
                    response_time_ms, user_engaged, dismissed
                ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
            """, (
                interaction.interaction_id, interaction.participant_id,
                interaction.timestamp, interaction.scenario_id,
                interaction.interaction_type, interaction.user_query,
                interaction.ai_response,
                interaction.explanation_depth, interaction.communication_style,
                interaction.confidence_framing, interaction.risk_bias,
                interaction.response_time_ms, int(interaction.user_engaged),
                int(interaction.dismissed)
            ))

        # Update query count for reactive queries
        if interaction.interaction_type == "reactive_query":
            session = self.get_session(interaction.participant_id)
            if session:
                self.update_session(
                    interaction.participant_id,
                    total_chat_queries=session["total_chat_queries"] + 1
                )

    def record_trust_metric(
        self,
        participant_id: str,
        scenario_id: str,
        pre_confidence: int,
        post_confidence: int,
        advice_followed: bool,
        time_deliberating_ms: int,
        queries_before_decision: int,
        outcome_positive: bool
    ):
        """Record trust-related metrics for a scenario."""
        metric_id = str(uuid.uuid4())[:12]

        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute("""
                INSERT INTO trust_metrics (
                    metric_id, participant_id, scenario_id, timestamp,
                    pre_advice_confidence, post_advice_confidence, confidence_change,
                    advice_followed, time_deliberating_ms, queries_before_decision,
                    outcome_positive
                ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
            """, (
                metric_id, participant_id, scenario_id,
                datetime.now().isoformat(),
                pre_confidence, post_confidence, post_confidence - pre_confidence,
                int(advice_followed), time_deliberating_ms, queries_before_decision,
                int(outcome_positive)
            ))

    def get_participant_decisions(self, participant_id: str) -> List[Dict]:
        """Get all decisions for a participant."""
        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute(
                "SELECT * FROM decisions WHERE participant_id = ? ORDER BY timestamp",
                (participant_id,)
            )
            return [dict(row) for row in cursor.fetchall()]

    def get_participant_interactions(self, participant_id: str) -> List[Dict]:
        """Get all chat interactions for a participant."""
        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute(
                "SELECT * FROM chat_interactions WHERE participant_id = ? ORDER BY timestamp",
                (participant_id,)
            )
            return [dict(row) for row in cursor.fetchall()]

    def get_session_summary(self, participant_id: str) -> Dict[str, Any]:
        """Get a summary of a participant's session."""
        session = self.get_session(participant_id)
        if not session:
            return {}

        decisions = self.get_participant_decisions(participant_id)
        interactions = self.get_participant_interactions(participant_id)

        # Calculate metrics
        ai_follow_rate = (
            session["ai_advice_followed"] / session["ai_advice_total"]
            if session["ai_advice_total"] > 0 else 0
        )

        proactive_engage_rate = (
            session["proactive_advice_accepted"] /
            (session["proactive_advice_accepted"] + session["proactive_advice_dismissed"])
            if (session["proactive_advice_accepted"] + session["proactive_advice_dismissed"]) > 0
            else 0
        )

        portfolio_return = (
            (session["current_portfolio"] - session["initial_portfolio"]) /
            session["initial_portfolio"]
        )

        # Calculate average decision time
        avg_decision_time = (
            sum(d["time_to_decision_ms"] for d in decisions) / len(decisions)
            if decisions else 0
        )

        return {
            "participant_id": participant_id,
            "condition": session["condition_name"],
            "completed": bool(session["completed"]),
            "scenarios_completed": session["scenarios_completed"],
            "initial_portfolio": session["initial_portfolio"],
            "final_portfolio": session["current_portfolio"],
            "portfolio_return": portfolio_return,
            "portfolio_return_pct": f"{portfolio_return * 100:.1f}%",
            "ai_follow_rate": ai_follow_rate,
            "ai_follow_rate_pct": f"{ai_follow_rate * 100:.1f}%",
            "proactive_engage_rate": proactive_engage_rate,
            "total_chat_queries": session["total_chat_queries"],
            "avg_decision_time_ms": avg_decision_time,
            "total_decisions": len(decisions),
            "total_interactions": len(interactions)
        }

    def get_all_sessions(self) -> List[Dict]:
        """Get all sessions for export/analysis."""
        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute("SELECT * FROM sessions ORDER BY session_start")
            return [dict(row) for row in cursor.fetchall()]

    def get_all_decisions(self) -> List[Dict]:
        """Get all decisions for export/analysis."""
        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute("SELECT * FROM decisions ORDER BY timestamp")
            return [dict(row) for row in cursor.fetchall()]

    def get_all_interactions(self) -> List[Dict]:
        """Get all chat interactions for export/analysis."""
        with get_db_connection() as conn:
            cursor = conn.cursor()
            cursor.execute("SELECT * FROM chat_interactions ORDER BY timestamp")
            return [dict(row) for row in cursor.fetchall()]


# Singleton tracker instance
tracker = ExperimentTracker()