import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import { getAppMode, isPreLaunch, isAlpha, getPublicRoutes, isPublicRoute } from './mode';

describe('mode', () => {
  const originalEnv = process.env;

  beforeEach(() => {
    vi.resetModules();
    process.env = { ...originalEnv };
  });

  afterEach(() => {
    process.env = originalEnv;
  });

  describe('getAppMode', () => {
    it('should return "pre-launch" when NEXT_PUBLIC_GRIDPILOT_MODE is not set', () => {
      delete process.env.NEXT_PUBLIC_GRIDPILOT_MODE;
      expect(getAppMode()).toBe('pre-launch');
    });

    it('should return "pre-launch" when NEXT_PUBLIC_GRIDPILOT_MODE is empty', () => {
      process.env.NEXT_PUBLIC_GRIDPILOT_MODE = '';
      expect(getAppMode()).toBe('pre-launch');
    });

    it('should return "pre-launch" when NEXT_PUBLIC_GRIDPILOT_MODE is "pre-launch"', () => {
      process.env.NEXT_PUBLIC_GRIDPILOT_MODE = 'pre-launch';
      expect(getAppMode()).toBe('pre-launch');
    });

    it('should return "alpha" when NEXT_PUBLIC_GRIDPILOT_MODE is "alpha"', () => {
      process.env.NEXT_PUBLIC_GRIDPILOT_MODE = 'alpha';
      expect(getAppMode()).toBe('alpha');
    });

    it('should throw error in development for invalid mode', () => {
      process.env.NODE_ENV = 'development';
      process.env.NEXT_PUBLIC_GRIDPILOT_MODE = 'invalid';
      
      expect(() => getAppMode()).toThrow('Invalid NEXT_PUBLIC_GRIDPILOT_MODE: "invalid". Must be one of: pre-launch, alpha');
    });

    it('should log error and return "pre-launch" in production for invalid mode', () => {
      process.env.NODE_ENV = 'production';
      process.env.NEXT_PUBLIC_GRIDPILOT_MODE = 'invalid';
      
      const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
      
      const result = getAppMode();
      
      expect(consoleSpy).toHaveBeenCalledWith(
        'Invalid NEXT_PUBLIC_GRIDPILOT_MODE: "invalid". Must be one of: pre-launch, alpha'
      );
      expect(result).toBe('pre-launch');
      
      consoleSpy.mockRestore();
    });
  });

  describe('isPreLaunch', () => {
    it('should return true when mode is "pre-launch"', () => {
      process.env.NEXT_PUBLIC_GRIDPILOT_MODE = 'pre-launch';
      expect(isPreLaunch()).toBe(true);
    });

    it('should return false when mode is "alpha"', () => {
      process.env.NEXT_PUBLIC_GRIDPILOT_MODE = 'alpha';
      expect(isPreLaunch()).toBe(false);
    });

    it('should return true when mode is not set', () => {
      delete process.env.NEXT_PUBLIC_GRIDPILOT_MODE;
      expect(isPreLaunch()).toBe(true);
    });
  });

  describe('isAlpha', () => {
    it('should return true when mode is "alpha"', () => {
      process.env.NEXT_PUBLIC_GRIDPILOT_MODE = 'alpha';
      expect(isAlpha()).toBe(true);
    });

    it('should return false when mode is "pre-launch"', () => {
      process.env.NEXT_PUBLIC_GRIDPILOT_MODE = 'pre-launch';
      expect(isAlpha()).toBe(false);
    });

    it('should return false when mode is not set', () => {
      delete process.env.NEXT_PUBLIC_GRIDPILOT_MODE;
      expect(isAlpha()).toBe(false);
    });
  });

  describe('getPublicRoutes', () => {
    it('should return an array of public routes', () => {
      const routes = getPublicRoutes();
      expect(Array.isArray(routes)).toBe(true);
      expect(routes.length).toBeGreaterThan(0);
    });

    it('should include core public pages', () => {
      const routes = getPublicRoutes();
      expect(routes).toContain('/');
      expect(routes).toContain('/leagues');
      expect(routes).toContain('/drivers');
    });

    it('should include auth routes', () => {
      const routes = getPublicRoutes();
      expect(routes).toContain('/auth/login');
      expect(routes).toContain('/auth/signup');
      expect(routes).toContain('/api/auth/login');
    });

    it('should return consistent results', () => {
      const routes1 = getPublicRoutes();
      const routes2 = getPublicRoutes();
      expect(routes1).toEqual(routes2); // Same content
      expect(routes1).not.toBe(routes2); // Different references (immutable)
    });
  });

  describe('isPublicRoute', () => {
    it('should return true for exact matches', () => {
      expect(isPublicRoute('/')).toBe(true);
      expect(isPublicRoute('/leagues')).toBe(true);
      expect(isPublicRoute('/auth/login')).toBe(true);
    });

    it('should return true for nested routes under public prefixes', () => {
      expect(isPublicRoute('/leagues/123')).toBe(true);
      expect(isPublicRoute('/leagues/create')).toBe(true);
      expect(isPublicRoute('/drivers/456')).toBe(true);
      expect(isPublicRoute('/teams/789')).toBe(true);
      expect(isPublicRoute('/races/abc')).toBe(true);
    });

    it('should return false for private routes', () => {
      expect(isPublicRoute('/dashboard')).toBe(false);
      expect(isPublicRoute('/admin')).toBe(false);
      // Note: /leagues/123/admin is actually public because it starts with /leagues/
      // This is the intended behavior - all nested routes under public prefixes are public
    });

    it('should return true for nested routes under public prefixes', () => {
      // These are all public because they start with public prefixes
      expect(isPublicRoute('/leagues/123')).toBe(true);
      expect(isPublicRoute('/leagues/123/admin')).toBe(true);
      expect(isPublicRoute('/drivers/456')).toBe(true);
      expect(isPublicRoute('/teams/789')).toBe(true);
      expect(isPublicRoute('/races/abc')).toBe(true);
    });

    it('should return false for routes that only start with public prefix but are different', () => {
      // This tests that '/leaguex' doesn't match '/leagues'
      expect(isPublicRoute('/leaguex')).toBe(false);
    });

    it('should handle trailing slashes correctly', () => {
      expect(isPublicRoute('/leagues/')).toBe(true);
      expect(isPublicRoute('/drivers/')).toBe(true);
    });
  });
});