import { describe, it, expect } from 'vitest';

/**
 * Test free spin bonus logic
 */

describe('Free Spin Bonus Logic', () => {
  describe('Symbol Combination Detection', () => {
    it('should detect scatter symbols (3+)', () => {
      const scatterSymbols = ['🎰', '🎰', '🎰'];
      expect(scatterSymbols.length).toBeGreaterThanOrEqual(3);
    });

    it('should detect bonus symbols (3+)', () => {
      const bonusSymbols = ['🎁', '🎁', '🎁'];
      expect(bonusSymbols.length).toBeGreaterThanOrEqual(3);
    });

    it('should detect wild symbols on full reel', () => {
      const wildReel = ['⭐', '⭐', '⭐'];
      expect(wildReel.every(s => s === '⭐')).toBe(true);
    });
  });

  describe('Free Spin Award Calculation', () => {
    it('should award 5 free spins for scatter trigger', () => {
      const scatterFreeSpins = 5;
      expect(scatterFreeSpins).toBe(5);
    });

    it('should award 3 free spins for bonus trigger', () => {
      const bonusFreeSpins = 3;
      expect(bonusFreeSpins).toBe(3);
    });

    it('should award 7 free spins for middle row bonus', () => {
      const middleRowBonusFreeSpins = 7;
      expect(middleRowBonusFreeSpins).toBe(7);
    });

    it('should award 10 free spins for wild combo', () => {
      const wildComboFreeSpins = 10;
      expect(wildComboFreeSpins).toBe(10);
    });
  });

  describe('Free Spin Counter Management', () => {
    it('should decrement free spins after each spin', () => {
      let freeSpins = 5;
      freeSpins -= 1;
      expect(freeSpins).toBe(4);
    });

    it('should add new free spins if triggered during active free spins', () => {
      let freeSpins = 3;
      const newFreeSpins = 5;
      freeSpins = freeSpins - 1 + newFreeSpins; // Decrement one, add new
      expect(freeSpins).toBe(7);
    });

    it('should not go below zero', () => {
      let freeSpins = 0;
      freeSpins = Math.max(0, freeSpins - 1);
      expect(freeSpins).toBe(0);
    });

    it('should handle maximum free spins cap', () => {
      const maxFreeSpins = 100;
      let freeSpins = 95;
      const newFreeSpins = 10;
      freeSpins = Math.min(maxFreeSpins, freeSpins + newFreeSpins);
      expect(freeSpins).toBe(100);
    });
  });

  describe('Free Spin Win Multiplier', () => {
    it('should apply 1.0x multiplier in early free spins', () => {
      const freeSpinsRemaining = 5;
      const totalFreeSpins = 5;
      const progressRatio = 1 - freeSpinsRemaining / totalFreeSpins;
      
      let multiplier = 1.0;
      if (progressRatio >= 0.33 && progressRatio < 0.66) {
        multiplier = 1.25;
      } else if (progressRatio >= 0.66) {
        multiplier = 1.5;
      }
      
      expect(multiplier).toBe(1.0);
    });

    it('should apply 1.25x multiplier in middle free spins', () => {
      const freeSpinsRemaining = 3;
      const totalFreeSpins = 5;
      const progressRatio = 1 - freeSpinsRemaining / totalFreeSpins;
      
      let multiplier = 1.0;
      if (progressRatio >= 0.33 && progressRatio < 0.66) {
        multiplier = 1.25;
      } else if (progressRatio >= 0.66) {
        multiplier = 1.5;
      }
      
      expect(multiplier).toBe(1.25);
    });

    it('should apply 1.5x multiplier in final free spins', () => {
      const freeSpinsRemaining = 1;
      const totalFreeSpins = 5;
      const progressRatio = 1 - freeSpinsRemaining / totalFreeSpins;
      
      let multiplier = 1.0;
      if (progressRatio >= 0.33 && progressRatio < 0.66) {
        multiplier = 1.25;
      } else if (progressRatio >= 0.66) {
        multiplier = 1.5;
      }
      
      expect(multiplier).toBe(1.5);
    });
  });

  describe('Free Spin Mode Detection', () => {
    it('should detect active free spin mode', () => {
      const freeSpins = 5;
      const isActive = freeSpins > 0;
      expect(isActive).toBe(true);
    });

    it('should detect inactive free spin mode', () => {
      const freeSpins = 0;
      const isActive = freeSpins > 0;
      expect(isActive).toBe(false);
    });
  });

  describe('Free Spin Trigger Types', () => {
    it('should identify scatter trigger', () => {
      const triggerType = 'scatter';
      expect(['scatter', 'bonus', 'wild-combo']).toContain(triggerType);
    });

    it('should identify bonus trigger', () => {
      const triggerType = 'bonus';
      expect(['scatter', 'bonus', 'wild-combo']).toContain(triggerType);
    });

    it('should identify wild-combo trigger', () => {
      const triggerType = 'wild-combo';
      expect(['scatter', 'bonus', 'wild-combo']).toContain(triggerType);
    });
  });

  describe('Free Spin Announcement Messages', () => {
    it('should generate scatter bonus message', () => {
      const message = '🎰 SCATTER SYMBOLS! You\'ve won 5 FREE SPINS!';
      expect(message).toContain('SCATTER');
      expect(message).toContain('5');
      expect(message).toContain('FREE SPINS');
    });

    it('should generate bonus symbols message', () => {
      const message = '🎁 BONUS SYMBOLS! You\'ve won 3 FREE SPINS!';
      expect(message).toContain('BONUS');
      expect(message).toContain('3');
      expect(message).toContain('FREE SPINS');
    });

    it('should generate wild reel message', () => {
      const message = '⭐ WILD REEL! You\'ve won 10 FREE SPINS!';
      expect(message).toContain('WILD');
      expect(message).toContain('10');
      expect(message).toContain('FREE SPINS');
    });
  });

  describe('Free Spin Sound Effects', () => {
    it('should have correct volume for free spin bonus sound', () => {
      const volume = 0.9;
      expect(volume).toBeGreaterThan(0);
      expect(volume).toBeLessThanOrEqual(1);
    });

    it('should have valid free spin sound URL', () => {
      const url = 'https://d2xsxph8kpxj0f.cloudfront.net/310519663467917392/38mmEpDjJeLLr6ocaGW5p5/free-spin-bonus_30f65850.wav';
      expect(url).toMatch(/^https:\/\//);
      expect(url).toContain('.wav');
    });
  });

  describe('Free Spin Animation Timing', () => {
    it('should display free spin announcement for 4 seconds', () => {
      const announcementDuration = 4000;
      expect(announcementDuration).toBeGreaterThan(0);
      expect(announcementDuration).toBeLessThanOrEqual(5000);
    });

    it('should have valid counter update interval', () => {
      const updateInterval = 300;
      expect(updateInterval).toBeGreaterThan(0);
      expect(updateInterval).toBeLessThanOrEqual(1000);
    });
  });

  describe('Free Spin Validation', () => {
    it('should validate free spin state within bounds', () => {
      const freeSpins = 50;
      const maxFreeSpins = 100;
      const isValid = freeSpins >= 0 && freeSpins <= maxFreeSpins;
      expect(isValid).toBe(true);
    });

    it('should reject negative free spins', () => {
      const freeSpins = -5;
      const maxFreeSpins = 100;
      const isValid = freeSpins >= 0 && freeSpins <= maxFreeSpins;
      expect(isValid).toBe(false);
    });

    it('should reject free spins exceeding maximum', () => {
      const freeSpins = 150;
      const maxFreeSpins = 100;
      const isValid = freeSpins >= 0 && freeSpins <= maxFreeSpins;
      expect(isValid).toBe(false);
    });
  });
});