"""
Market Risk Engine - Usage Examples

Simple examples showing how to use the Market Risk Engine.
"""

import asyncio
from src.core.macroeconomics.markets.risk_engine import (
    MarketRiskEngine,
    RiskRegime,
    RiskEngineConfig,
)


async def example_1_basic_usage():
    """Example 1: Basic risk assessment."""
    print("\n=== Example 1: Basic Risk Assessment ===\n")

    # Initialize engine
    engine = MarketRiskEngine()

    # Get current risk score
    risk_score = await engine.assess_current_risk()

    # Display results
    print(f"Global Risk Score: {risk_score.risk_score:.1f}/100")
    print(f"Risk Regime: {risk_score.regime.value.upper()}")

    # Act based on regime
    if risk_score.regime == RiskRegime.RED:
        print("⚠️ HIGH RISK: Consider defensive positioning")
    elif risk_score.regime == RiskRegime.YELLOW:
        print("⚡ MODERATE RISK: Monitor closely")
    else:
        print("✅ LOW RISK: Favorable environment for risk assets")


async def example_2_category_breakdown():
    """Example 2: Detailed category breakdown."""
    print("\n=== Example 2: Category Breakdown ===\n")

    engine = MarketRiskEngine()
    risk_score = await engine.assess_current_risk()

    print("Risk by Category:")
    for category, score in risk_score.category_scores.items():
        cat_name = category.value.replace('_', ' ').title()
        print(f"  {cat_name:20s} {score.score:5.1f}/100")


async def example_3_custom_config():
    """Example 3: Custom configuration."""
    print("\n=== Example 3: Custom Configuration ===\n")

    # Create custom config
    config = RiskEngineConfig(
        lookback_days=252  # 1 year instead of default 2 years
    )

    engine = MarketRiskEngine(config=config)
    risk_score = await engine.assess_current_risk()

    print(f"Risk Score (1-year lookback): {risk_score.risk_score:.1f}/100")


async def example_4_full_report():
    """Example 4: Generate full report."""
    print("\n=== Example 4: Full Report ===\n")

    engine = MarketRiskEngine()

    # Generate comprehensive report
    report = await engine.get_full_report()

    print(report)


async def example_5_top_risks():
    """Example 5: Identify top risk categories."""
    print("\n=== Example 5: Top Risk Categories ===\n")

    engine = MarketRiskEngine()
    risk_score = await engine.assess_current_risk()

    # Get top 3 most stressed categories
    top_risks = engine.aggregator.get_top_risks(risk_score, n=3)

    print("Top 3 Risk Areas:")
    for i, cat_score in enumerate(top_risks, 1):
        cat_name = cat_score.category.value.replace('_', ' ').title()
        print(f"\n{i}. {cat_name}")
        print(f"   Score: {cat_score.score:.1f}/100")
        print(f"   {cat_score.description}")


async def example_6_programmatic_usage():
    """Example 6: Programmatic decision making."""
    print("\n=== Example 6: Programmatic Usage ===\n")

    engine = MarketRiskEngine()
    risk_score = await engine.assess_current_risk()

    # Make trading decisions based on risk
    if risk_score.risk_score > 70:
        print("🔴 Risk Score > 70: Reduce exposure")
        print("   Action: Move to defensive positions (TLT, GLD, cash)")

    elif risk_score.risk_score > 50:
        print("⚡ Risk Score 50-70: Cautious positioning")
        print("   Action: Reduce leverage, tighten stops")

    else:
        print("✅ Risk Score < 50: Favorable for risk assets")
        print("   Action: Normal positioning, consider opportunities")

    # Check specific categories
    credit_score = risk_score.category_scores.get(
        next(c for c in risk_score.category_scores.keys()
             if c.value == "credit")
    )

    if credit_score and credit_score.score > 65:
        print("\n⚠️ Credit stress detected:")
        print("   Consider: Reduce HY exposure, focus on quality")


async def main():
    """Run all examples."""
    examples = [
        example_1_basic_usage,
        example_2_category_breakdown,
        example_3_custom_config,
        example_4_full_report,
        example_5_top_risks,
        example_6_programmatic_usage,
    ]

    for example in examples:
        try:
            await example()
        except Exception as e:
            print(f"\n✗ Example failed: {e}")
            import traceback
            traceback.print_exc()

        print("\n" + "=" * 70 + "\n")


if __name__ == "__main__":
    # Run single example
    # asyncio.run(example_1_basic_usage())

    # Or run all examples
    asyncio.run(main())