/**
 * Decision Helpers Tests
 * 
 * Tests for all decision helper functions in Position Manager:
 * - shouldEmergencyStop() - LONG and SHORT
 * - shouldStopLoss() - LONG and SHORT
 * - shouldTakeProfit1() - LONG and SHORT
 * - shouldTakeProfit2() - LONG and SHORT
 */

import { 
  createLongTrade, 
  createShortTrade,
  TEST_DEFAULTS
} from '../../helpers/trade-factory'

describe('Decision Helpers', () => {
  // Extract decision helpers from Position Manager
  // These are pure functions that test price against targets
  
  function shouldEmergencyStop(price: number, trade: { direction: 'long' | 'short', emergencyStopPrice: number }): boolean {
    if (trade.direction === 'long') {
      return price <= trade.emergencyStopPrice
    } else {
      return price >= trade.emergencyStopPrice
    }
  }
  
  function shouldStopLoss(price: number, trade: { direction: 'long' | 'short', stopLossPrice: number }): boolean {
    if (trade.direction === 'long') {
      return price <= trade.stopLossPrice
    } else {
      return price >= trade.stopLossPrice
    }
  }
  
  function shouldTakeProfit1(price: number, trade: { direction: 'long' | 'short', tp1Price: number }): boolean {
    if (trade.direction === 'long') {
      return price >= trade.tp1Price
    } else {
      return price <= trade.tp1Price
    }
  }
  
  function shouldTakeProfit2(price: number, trade: { direction: 'long' | 'short', tp2Price: number }): boolean {
    if (trade.direction === 'long') {
      return price >= trade.tp2Price
    } else {
      return price <= trade.tp2Price
    }
  }
  
  describe('shouldEmergencyStop()', () => {
    describe('LONG positions', () => {
      it('should trigger emergency stop when price at -2% (emergency level)', () => {
        const trade = createLongTrade({ entryPrice: 140 })
        // Emergency stop at -2% = $137.20
        expect(trade.emergencyStopPrice).toBe(TEST_DEFAULTS.long.emergencySl)
        
        expect(shouldEmergencyStop(137.20, trade)).toBe(true)
      })
      
      it('should trigger emergency stop when price below emergency level', () => {
        const trade = createLongTrade()
        
        expect(shouldEmergencyStop(136.00, trade)).toBe(true) // Below emergency
        expect(shouldEmergencyStop(135.00, trade)).toBe(true) // Well below
      })
      
      it('should NOT trigger emergency stop above emergency level', () => {
        const trade = createLongTrade()
        
        expect(shouldEmergencyStop(138.00, trade)).toBe(false) // Above emergency but below SL
        expect(shouldEmergencyStop(140.00, trade)).toBe(false) // At entry
        expect(shouldEmergencyStop(141.00, trade)).toBe(false) // In profit
      })
    })
    
    describe('SHORT positions', () => {
      it('should trigger emergency stop when price at +2% (emergency level)', () => {
        const trade = createShortTrade({ entryPrice: 140 })
        // Emergency stop at +2% = $142.80
        expect(trade.emergencyStopPrice).toBe(TEST_DEFAULTS.short.emergencySl)
        
        expect(shouldEmergencyStop(142.80, trade)).toBe(true)
      })
      
      it('should trigger emergency stop when price above emergency level', () => {
        const trade = createShortTrade()
        
        expect(shouldEmergencyStop(143.00, trade)).toBe(true)
        expect(shouldEmergencyStop(145.00, trade)).toBe(true)
      })
      
      it('should NOT trigger emergency stop below emergency level', () => {
        const trade = createShortTrade()
        
        expect(shouldEmergencyStop(142.00, trade)).toBe(false) // Below emergency but at SL
        expect(shouldEmergencyStop(140.00, trade)).toBe(false) // At entry
        expect(shouldEmergencyStop(138.00, trade)).toBe(false) // In profit
      })
    })
  })
  
  describe('shouldStopLoss()', () => {
    describe('LONG positions', () => {
      it('should trigger SL when price at stop loss level', () => {
        const trade = createLongTrade({ entryPrice: 140 })
        // SL at -0.92% = $138.71
        expect(trade.stopLossPrice).toBe(TEST_DEFAULTS.long.sl)
        
        expect(shouldStopLoss(138.71, trade)).toBe(true)
      })
      
      it('should trigger SL when price below stop loss', () => {
        const trade = createLongTrade()
        
        expect(shouldStopLoss(138.00, trade)).toBe(true)
        expect(shouldStopLoss(137.50, trade)).toBe(true)
      })
      
      it('should NOT trigger SL when price above stop loss', () => {
        const trade = createLongTrade()
        
        expect(shouldStopLoss(139.00, trade)).toBe(false)
        expect(shouldStopLoss(140.00, trade)).toBe(false)
        expect(shouldStopLoss(141.00, trade)).toBe(false)
      })
      
      it('should work with adjusted SL (breakeven after TP1)', () => {
        const trade = createLongTrade({ 
          entryPrice: 140,
          stopLossPrice: 140.00, // Moved to breakeven
          tp1Hit: true
        })
        
        expect(shouldStopLoss(139.99, trade)).toBe(true) // Just below breakeven
        expect(shouldStopLoss(140.00, trade)).toBe(true) // At breakeven
        expect(shouldStopLoss(140.01, trade)).toBe(false) // Above breakeven
      })
    })
    
    describe('SHORT positions', () => {
      it('should trigger SL when price at stop loss level', () => {
        const trade = createShortTrade({ entryPrice: 140 })
        // SL at +0.92% = $141.29
        expect(trade.stopLossPrice).toBe(TEST_DEFAULTS.short.sl)
        
        expect(shouldStopLoss(141.29, trade)).toBe(true)
      })
      
      it('should trigger SL when price above stop loss', () => {
        const trade = createShortTrade()
        
        expect(shouldStopLoss(142.00, trade)).toBe(true)
        expect(shouldStopLoss(143.00, trade)).toBe(true)
      })
      
      it('should NOT trigger SL when price below stop loss', () => {
        const trade = createShortTrade()
        
        expect(shouldStopLoss(141.00, trade)).toBe(false)
        expect(shouldStopLoss(140.00, trade)).toBe(false)
        expect(shouldStopLoss(138.00, trade)).toBe(false)
      })
      
      it('should work with adjusted SL (breakeven after TP1)', () => {
        const trade = createShortTrade({ 
          entryPrice: 140,
          stopLossPrice: 140.00, // Moved to breakeven
          tp1Hit: true
        })
        
        expect(shouldStopLoss(140.01, trade)).toBe(true) // Just above breakeven
        expect(shouldStopLoss(140.00, trade)).toBe(true) // At breakeven
        expect(shouldStopLoss(139.99, trade)).toBe(false) // Below breakeven (in profit)
      })
    })
  })
  
  describe('shouldTakeProfit1()', () => {
    describe('LONG positions', () => {
      it('should trigger TP1 when price at target', () => {
        const trade = createLongTrade({ entryPrice: 140 })
        expect(trade.tp1Price).toBe(TEST_DEFAULTS.long.tp1)
        
        expect(shouldTakeProfit1(141.20, trade)).toBe(true)
      })
      
      it('should trigger TP1 when price above target', () => {
        const trade = createLongTrade()
        
        expect(shouldTakeProfit1(141.50, trade)).toBe(true)
        expect(shouldTakeProfit1(142.00, trade)).toBe(true)
      })
      
      it('should NOT trigger TP1 when price below target', () => {
        const trade = createLongTrade()
        
        expect(shouldTakeProfit1(141.00, trade)).toBe(false)
        expect(shouldTakeProfit1(140.00, trade)).toBe(false)
        expect(shouldTakeProfit1(139.00, trade)).toBe(false)
      })
    })
    
    describe('SHORT positions', () => {
      it('should trigger TP1 when price at target', () => {
        const trade = createShortTrade({ entryPrice: 140 })
        expect(trade.tp1Price).toBe(TEST_DEFAULTS.short.tp1)
        
        expect(shouldTakeProfit1(138.80, trade)).toBe(true)
      })
      
      it('should trigger TP1 when price below target (better for short)', () => {
        const trade = createShortTrade()
        
        expect(shouldTakeProfit1(138.50, trade)).toBe(true)
        expect(shouldTakeProfit1(138.00, trade)).toBe(true)
      })
      
      it('should NOT trigger TP1 when price above target', () => {
        const trade = createShortTrade()
        
        expect(shouldTakeProfit1(139.00, trade)).toBe(false)
        expect(shouldTakeProfit1(140.00, trade)).toBe(false)
        expect(shouldTakeProfit1(141.00, trade)).toBe(false)
      })
    })
  })
  
  describe('shouldTakeProfit2()', () => {
    describe('LONG positions', () => {
      it('should trigger TP2 when price at target', () => {
        const trade = createLongTrade({ entryPrice: 140 })
        expect(trade.tp2Price).toBe(TEST_DEFAULTS.long.tp2)
        
        expect(shouldTakeProfit2(142.41, trade)).toBe(true)
      })
      
      it('should trigger TP2 when price above target', () => {
        const trade = createLongTrade()
        
        expect(shouldTakeProfit2(143.00, trade)).toBe(true)
        expect(shouldTakeProfit2(145.00, trade)).toBe(true)
      })
      
      it('should NOT trigger TP2 when price below target', () => {
        const trade = createLongTrade()
        
        expect(shouldTakeProfit2(142.00, trade)).toBe(false)
        expect(shouldTakeProfit2(141.00, trade)).toBe(false)
        expect(shouldTakeProfit2(140.00, trade)).toBe(false)
      })
    })
    
    describe('SHORT positions', () => {
      it('should trigger TP2 when price at target', () => {
        const trade = createShortTrade({ entryPrice: 140 })
        expect(trade.tp2Price).toBe(TEST_DEFAULTS.short.tp2)
        
        expect(shouldTakeProfit2(137.59, trade)).toBe(true)
      })
      
      it('should trigger TP2 when price below target (better for short)', () => {
        const trade = createShortTrade()
        
        expect(shouldTakeProfit2(137.00, trade)).toBe(true)
        expect(shouldTakeProfit2(135.00, trade)).toBe(true)
      })
      
      it('should NOT trigger TP2 when price above target', () => {
        const trade = createShortTrade()
        
        expect(shouldTakeProfit2(138.00, trade)).toBe(false)
        expect(shouldTakeProfit2(140.00, trade)).toBe(false)
        expect(shouldTakeProfit2(141.00, trade)).toBe(false)
      })
    })
  })
  
  describe('Decision order priority', () => {
    it('emergency stop should trigger before regular SL', () => {
      const trade = createLongTrade({ entryPrice: 140 })
      const price = 136.00 // Below both emergency and SL
      
      const emergencyTriggered = shouldEmergencyStop(price, trade)
      const slTriggered = shouldStopLoss(price, trade)
      
      expect(emergencyTriggered).toBe(true)
      expect(slTriggered).toBe(true)
      // In Position Manager, emergency is checked first (higher priority)
    })
    
    it('SL should NOT be checked if TP already hit the threshold', () => {
      const trade = createLongTrade({ entryPrice: 140 })
      const highPrice = 143.00 // Well above TP1 and TP2
      
      const tp1Triggered = shouldTakeProfit1(highPrice, trade)
      const tp2Triggered = shouldTakeProfit2(highPrice, trade)
      const slTriggered = shouldStopLoss(highPrice, trade)
      
      expect(tp1Triggered).toBe(true)
      expect(tp2Triggered).toBe(true)
      expect(slTriggered).toBe(false)
      // When price is high, TP triggers but not SL
    })
  })
})