/**
 * Integration test for risk breach handling
 * Tests the complete flow of detecting, managing, and resolving risk breaches
 */

import { describe, it, expect, beforeAll, afterAll, beforeEach } from '@jest/globals';
import { HedgingManager } from '../../src/core/HedgingManager';
import { RiskManager } from '../../src/core/RiskManager';
import { RiskBreach, BreachType, BreachSeverity } from '../../src/types/hedging';

describe('Risk Breach Handling Integration', () => {
  let hedgingManager: HedgingManager;
  let riskManager: RiskManager;
  let testSessionId: string;

  beforeAll(async () => {
    // Initialize hedging manager
    hedgingManager = new HedgingManager({
      accounts: './config/accounts.json',
      hedging: './config/hedging-config.json',
      marketData: './config/market-data-config.json'
    });

    // Initialize risk manager
    riskManager = new RiskManager({
      riskCheckInterval: 1000,
      alertThresholds: {
        positionSize: 0.08,
        portfolioLoss: 0.03,
        slippage: 0.015
      },
      maxConcurrentBreaches: 10
    });

    await hedgingManager.initialize();
    await riskManager.initialize();
  });

  afterAll(async () => {
    if (hedgingManager) {
      await hedgingManager.shutdown();
    }
    if (riskManager) {
      await riskManager.shutdown();
    }
  });

  beforeEach(async () => {
    // Create a test session for each test
    const sessionRequest = {
      name: 'Risk Breach Test Session',
      accountIds: ['account-1', 'account-2'],
      volumeTarget: 10000,
      strategy: {
        symbol: 'ETH/USD',
        volumeDistribution: 'equal' as const,
        priceRange: { min: 0.001, max: 0.01 },
        timing: { minInterval: 30, maxInterval: 120, orderSize: { min: 100, max: 500 } },
        riskLimits: { maxPositionSize: 0.1, stopLossThreshold: 0.05, maxSlippage: 0.02 },
        orderTypes: { primary: 'limit' as const, fallback: 'market' as const }
      }
    };

    try {
      const session = await hedgingManager.createSession(sessionRequest);
      testSessionId = session.id;
    } catch (error) {
      testSessionId = 'mock-session-id';
    }
  });

  describe('Risk Breach Detection', () => {
    it('should detect position size breaches', async () => {
      try {
        // Mock position size breach scenario
        const breach = await riskManager.checkPositionSizeRisk(testSessionId, 'account-1', 0.12);
        
        expect(breach).toBeDefined();
        expect(breach.breachType).toBe('position_size_exceeded');
        expect(breach.severity).toBe('critical');
        expect(breach.sessionId).toBe(testSessionId);
        expect(breach.accountId).toBe('account-1');
        expect(breach.details.currentValue).toBe(0.12);
        expect(breach.details.limitValue).toBe(0.1);
        expect(breach.details.percentage).toBe(120);
        expect(breach.resolved).toBe(false);
        expect(breach.timestamp).toBeInstanceOf(Date);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should detect portfolio loss breaches', async () => {
      try {
        // Mock portfolio loss breach scenario
        const breach = await riskManager.checkPortfolioLossRisk(testSessionId, -0.06);
        
        expect(breach).toBeDefined();
        expect(breach.breachType).toBe('portfolio_loss_exceeded');
        expect(breach.severity).toBe('critical');
        expect(breach.sessionId).toBe(testSessionId);
        expect(breach.accountId).toBeUndefined(); // Portfolio-level breach
        expect(breach.details.currentValue).toBe(-0.06);
        expect(breach.details.limitValue).toBe(-0.05);
        expect(breach.details.percentage).toBe(120);
        expect(breach.resolved).toBe(false);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should detect slippage breaches', async () => {
      try {
        // Mock slippage breach scenario
        const breach = await riskManager.checkSlippageRisk(testSessionId, 'account-1', 0.025);
        
        expect(breach).toBeDefined();
        expect(breach.breachType).toBe('slippage_exceeded');
        expect(breach.severity).toBe('warning');
        expect(breach.sessionId).toBe(testSessionId);
        expect(breach.accountId).toBe('account-1');
        expect(breach.details.currentValue).toBe(0.025);
        expect(breach.details.limitValue).toBe(0.02);
        expect(breach.details.percentage).toBe(125);
        expect(breach.resolved).toBe(false);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should detect margin insufficient breaches', async () => {
      try {
        // Mock margin insufficient breach scenario
        const breach = await riskManager.checkMarginRisk(testSessionId, 'account-1', 0.05);
        
        expect(breach).toBeDefined();
        expect(breach.breachType).toBe('margin_insufficient');
        expect(breach.severity).toBe('critical');
        expect(breach.sessionId).toBe(testSessionId);
        expect(breach.accountId).toBe('account-1');
        expect(breach.details.currentValue).toBe(0.05);
        expect(breach.details.limitValue).toBe(0.1);
        expect(breach.details.percentage).toBe(50);
        expect(breach.resolved).toBe(false);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should detect account liquidation risk', async () => {
      try {
        // Mock liquidation risk breach scenario
        const breach = await riskManager.checkLiquidationRisk(testSessionId, 'account-1', 0.02);
        
        expect(breach).toBeDefined();
        expect(breach.breachType).toBe('account_liquidation_risk');
        expect(breach.severity).toBe('critical');
        expect(breach.sessionId).toBe(testSessionId);
        expect(breach.accountId).toBe('account-1');
        expect(breach.details.currentValue).toBe(0.02);
        expect(breach.details.limitValue).toBe(0.05);
        expect(breach.details.percentage).toBe(40);
        expect(breach.resolved).toBe(false);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });
  });

  describe('Risk Breach Management', () => {
    let testBreachId: string;

    beforeEach(async () => {
      try {
        // Create a test breach
        const breach = await riskManager.checkPositionSizeRisk(testSessionId, 'account-1', 0.12);
        testBreachId = breach.id;
      } catch (error) {
        testBreachId = 'mock-breach-id';
      }
    });

    it('should store and retrieve risk breaches', async () => {
      try {
        const breach = await riskManager.getBreach(testBreachId);
        
        expect(breach).toBeDefined();
        expect(breach.id).toBe(testBreachId);
        expect(breach.sessionId).toBe(testSessionId);
        expect(breach.breachType).toBe('position_size_exceeded');
        expect(breach.severity).toBe('critical');
        expect(breach.resolved).toBe(false);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should list active breaches for a session', async () => {
      try {
        const breaches = await riskManager.getActiveBreaches(testSessionId);
        
        expect(Array.isArray(breaches)).toBe(true);
        expect(breaches.length).toBeGreaterThan(0);
        
        const testBreach = breaches.find(b => b.id === testBreachId);
        expect(testBreach).toBeDefined();
        expect(testBreach.resolved).toBe(false);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should filter breaches by type', async () => {
      try {
        const positionBreaches = await riskManager.getBreachesByType(testSessionId, 'position_size_exceeded');
        
        expect(Array.isArray(positionBreaches)).toBe(true);
        positionBreaches.forEach(breach => {
          expect(breach.breachType).toBe('position_size_exceeded');
        });
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should filter breaches by severity', async () => {
      try {
        const criticalBreaches = await riskManager.getBreachesBySeverity(testSessionId, 'critical');
        
        expect(Array.isArray(criticalBreaches)).toBe(true);
        criticalBreaches.forEach(breach => {
          expect(breach.severity).toBe('critical');
        });
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });
  });

  describe('Risk Breach Resolution', () => {
    let testBreachId: string;

    beforeEach(async () => {
      try {
        // Create a test breach
        const breach = await riskManager.checkPositionSizeRisk(testSessionId, 'account-1', 0.12);
        testBreachId = breach.id;
      } catch (error) {
        testBreachId = 'mock-breach-id';
      }
    });

    it('should resolve a risk breach', async () => {
      try {
        const resolvedBreach = await riskManager.resolveBreach(testBreachId, 'Position reduced below limit');
        
        expect(resolvedBreach).toBeDefined();
        expect(resolvedBreach.id).toBe(testBreachId);
        expect(resolvedBreach.resolved).toBe(true);
        expect(resolvedBreach.resolvedAt).toBeDefined();
        expect(resolvedBreach.resolvedAt).toBeInstanceOf(Date);
        expect(resolvedBreach.action).toBe('Position reduced below limit');
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should acknowledge a risk breach without resolving', async () => {
      try {
        const acknowledgedBreach = await riskManager.acknowledgeBreach(testBreachId, 'ignore', 'Monitoring situation');
        
        expect(acknowledgedBreach).toBeDefined();
        expect(acknowledgedBreach.id).toBe(testBreachId);
        expect(acknowledgedBreach.resolved).toBe(false);
        expect(acknowledgedBreach.action).toBe('ignore');
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should prevent operations on resolved breaches', async () => {
      try {
        // First resolve the breach
        await riskManager.resolveBreach(testBreachId, 'Position reduced');
        
        // Try to resolve again
        await riskManager.resolveBreach(testBreachId, 'Another action');
        fail('Should have rejected resolving an already resolved breach');
      } catch (error) {
        expect(error.message).toContain('already resolved');
      }
    });
  });

  describe('Risk Monitoring', () => {
    it('should continuously monitor risk metrics', async () => {
      const riskEvents: string[] = [];
      
      try {
        riskManager.on('breachDetected', (breach) => {
          riskEvents.push('breachDetected');
          expect(breach.sessionId).toBe(testSessionId);
        });
        
        riskManager.on('breachResolved', (breach) => {
          riskEvents.push('breachResolved');
          expect(breach.sessionId).toBe(testSessionId);
        });
        
        // Start monitoring
        await riskManager.startMonitoring(testSessionId);
        
        // Wait for monitoring to detect risks
        await new Promise(resolve => setTimeout(resolve, 2000));
        
        // Stop monitoring
        await riskManager.stopMonitoring(testSessionId);
        
        expect(riskEvents.length).toBeGreaterThan(0);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should calculate overall risk level', async () => {
      try {
        const riskLevel = await riskManager.calculateOverallRisk(testSessionId);
        
        expect(riskLevel).toBeDefined();
        expect(['low', 'medium', 'high']).toContain(riskLevel);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should generate risk status report', async () => {
      try {
        const riskStatus = await riskManager.getRiskStatus(testSessionId);
        
        expect(riskStatus).toBeDefined();
        expect(riskStatus.sessionId).toBe(testSessionId);
        expect(riskStatus.overallRisk).toBeDefined();
        expect(riskStatus.accountRisks).toBeDefined();
        expect(Array.isArray(riskStatus.accountRisks)).toBe(true);
        expect(riskStatus.portfolioRisk).toBeDefined();
        expect(riskStatus.activeBreaches).toBeDefined();
        expect(Array.isArray(riskStatus.activeBreaches)).toBe(true);
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });
  });

  describe('Risk Breach Notifications', () => {
    it('should emit breach detection events', async () => {
      const events: string[] = [];
      
      try {
        riskManager.on('breachDetected', (breach) => {
          events.push('breachDetected');
          expect(breach).toBeDefined();
          expect(breach.id).toBeDefined();
          expect(breach.sessionId).toBe(testSessionId);
        });
        
        // Trigger a breach
        await riskManager.checkPositionSizeRisk(testSessionId, 'account-1', 0.12);
        
        expect(events).toContain('breachDetected');
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });

    it('should emit breach resolution events', async () => {
      const events: string[] = [];
      let testBreachId: string;
      
      try {
        riskManager.on('breachResolved', (breach) => {
          events.push('breachResolved');
          expect(breach).toBeDefined();
          expect(breach.id).toBe(testBreachId);
        });
        
        // Create and resolve a breach
        const breach = await riskManager.checkPositionSizeRisk(testSessionId, 'account-1', 0.12);
        testBreachId = breach.id;
        await riskManager.resolveBreach(testBreachId, 'Position reduced');
        
        expect(events).toContain('breachResolved');
      } catch (error) {
        // This test should fail initially since RiskManager doesn't exist yet
        expect(error.message).toContain('RiskManager');
      }
    });
  });

  describe('Error Handling', () => {
    it('should handle non-existent breach operations gracefully', async () => {
      const nonExistentBreachId = 'non-existent-breach-id';
      
      try {
        await riskManager.getBreach(nonExistentBreachId);
        fail('Should have thrown error for non-existent breach');
      } catch (error) {
        expect(error.message).toContain('not found');
      }
    });

    it('should handle invalid breach resolution attempts', async () => {
      const nonExistentBreachId = 'non-existent-breach-id';
      
      try {
        await riskManager.resolveBreach(nonExistentBreachId, 'Test resolution');
        fail('Should have thrown error for non-existent breach');
      } catch (error) {
        expect(error.message).toContain('not found');
      }
    });

    it('should handle monitoring errors gracefully', async () => {
      try {
        await riskManager.startMonitoring('non-existent-session');
        fail('Should have thrown error for non-existent session');
      } catch (error) {
        expect(error.message).toContain('session');
      }
    });
  });
});