import request from 'supertest';
import express, { Application } from 'express';
import configRoutes from '../../../src/routes/config';
import locationRoutes from '../../../src/routes/locations';
import Location from '../../../src/models/Location';
import { createTestDatabase } from '../../setup';
import { Database } from 'sqlite3';

describe('Public API Routes', () => {
  let app: Application;
  let db: Database;
  let locationModel: Location;

  beforeEach(async () => {
    // Setup Express app
    app = express();
    app.use(express.json());

    // Setup test database and models
    db = await createTestDatabase();
    locationModel = new Location(db);

    // Mock profanity filter
    const mockProfanityFilter = {
      analyzeProfanity: jest.fn().mockReturnValue({
        hasProfanity: false,
        matches: [],
        severity: 'none',
        count: 0,
        filtered: 'test text'
      })
    };

    // Setup routes
    app.use('/api/config', configRoutes());
    app.use('/api/locations', locationRoutes(locationModel, mockProfanityFilter));
  });

  afterEach((done) => {
    db.close(done);
  });

  describe('GET /api/config', () => {
    it('should return API configuration', async () => {
      const response = await request(app)
        .get('/api/config')
        .expect(200);

      expect(response.body).toHaveProperty('mapboxAccessToken');
      expect(response.body).toHaveProperty('hasMapbox');
      expect(typeof response.body.hasMapbox).toBe('boolean');
    });

    it('should return mapbox token when configured', async () => {
      process.env.MAPBOX_ACCESS_TOKEN = 'pk.test_token';

      const response = await request(app)
        .get('/api/config')
        .expect(200);

      expect(response.body.mapboxAccessToken).toBe('pk.test_token');
      expect(response.body.hasMapbox).toBe(true);
    });

    it('should handle missing mapbox token', async () => {
      delete process.env.MAPBOX_ACCESS_TOKEN;

      const response = await request(app)
        .get('/api/config')
        .expect(200);

      expect(response.body.mapboxAccessToken).toBeNull();
      expect(response.body.hasMapbox).toBe(false);
    });
  });

  describe('GET /api/locations', () => {
    beforeEach(async () => {
      // Add test locations
      await locationModel.create({
        address: 'Test Location 1',
        latitude: 42.9634,
        longitude: -85.6681,
        description: 'Test description 1'
      });

      await locationModel.create({
        address: 'Test Location 2',
        latitude: 42.9584,
        longitude: -85.6706,
        description: 'Test description 2'
      });
    });

    it('should return all active locations', async () => {
      const response = await request(app)
        .get('/api/locations')
        .expect(200);

      expect(Array.isArray(response.body)).toBe(true);
      expect(response.body).toHaveLength(2);
      expect(response.body[0]).toHaveProperty('id');
      expect(response.body[0]).toHaveProperty('address');
      expect(response.body[0]).toHaveProperty('latitude');
      expect(response.body[0]).toHaveProperty('longitude');
    });

    it('should return empty array when no locations exist', async () => {
      // Clear all locations
      await locationModel.delete(1);
      await locationModel.delete(2);

      const response = await request(app)
        .get('/api/locations')
        .expect(200);

      expect(response.body).toEqual([]);
    });

    it('should handle database errors gracefully', async () => {
      // Create a new app with broken database to simulate error
      const brokenApp = express();
      brokenApp.use(express.json());
      
      // Create a broken location model that throws errors
      const brokenLocationModel = {
        getActive: jest.fn().mockRejectedValue(new Error('Database error'))
      };

      const mockProfanityFilter = {
        analyzeProfanity: jest.fn().mockReturnValue({
          hasProfanity: false,
          matches: [],
          severity: 'none',
          count: 0,
          filtered: 'test text'
        })
      };

      brokenApp.use('/api/locations', locationRoutes(brokenLocationModel as any, mockProfanityFilter));

      const response = await request(brokenApp)
        .get('/api/locations')
        .expect(500);

      expect(response.body).toHaveProperty('error');
      expect(response.body.error).toBe('Internal server error');
    });
  });

  describe('POST /api/locations', () => {
    it('should create a new location with valid data', async () => {
      const locationData = {
        address: 'New Test Location',
        latitude: 42.9634,
        longitude: -85.6681,
        description: 'New test description'
      };

      const response = await request(app)
        .post('/api/locations')
        .send(locationData)
        .expect(200);

      expect(response.body).toHaveProperty('id');
      expect(response.body.address).toBe(locationData.address);
      expect(response.body.latitude).toBe(locationData.latitude);
      expect(response.body.longitude).toBe(locationData.longitude);
      expect(response.body.description).toBe(locationData.description);
      expect(response.body).toHaveProperty('created_at');
    });

    it('should create location with only required address', async () => {
      const locationData = {
        address: 'Minimal Location'
      };

      const response = await request(app)
        .post('/api/locations')
        .send(locationData)
        .expect(200);

      expect(response.body).toHaveProperty('id');
      expect(response.body.address).toBe(locationData.address);
    });

    it('should reject request without address', async () => {
      const locationData = {
        latitude: 42.9634,
        longitude: -85.6681,
        description: 'Missing address'
      };

      const response = await request(app)
        .post('/api/locations')
        .send(locationData)
        .expect(400);

      expect(response.body).toHaveProperty('error');
      expect(response.body.error).toBe('Address is required');
    });

    it('should reject request with profanity in description', async () => {
      // Setup mock to detect profanity
      const app2 = express();
      app2.use(express.json());

      const mockProfanityFilter = {
        analyzeProfanity: jest.fn().mockReturnValue({
          hasProfanity: true,
          matches: [{ word: 'badword', category: 'general' }],
          severity: 'medium',
          count: 1,
          filtered: '*** text'
        })
      };

      app2.use('/api/locations', locationRoutes(locationModel, mockProfanityFilter));

      const locationData = {
        address: 'Test Location',
        description: 'This contains profanity'
      };

      const response = await request(app2)
        .post('/api/locations')
        .send(locationData)
        .expect(400);

      expect(response.body).toHaveProperty('error');
      expect(response.body.error).toBe('Submission rejected');
      expect(response.body).toHaveProperty('message');
      expect(response.body).toHaveProperty('details');
    });

    it('should handle empty description', async () => {
      const locationData = {
        address: 'Test Location',
        description: ''
      };

      const response = await request(app)
        .post('/api/locations')
        .send(locationData)
        .expect(200);

      expect(response.body).toHaveProperty('id');
      expect(response.body.address).toBe(locationData.address);
    });

    it('should handle missing optional fields', async () => {
      const locationData = {
        address: 'Test Location'
        // No latitude, longitude, or description
      };

      const response = await request(app)
        .post('/api/locations')
        .send(locationData)
        .expect(200);

      expect(response.body).toHaveProperty('id');
      expect(response.body.address).toBe(locationData.address);
    });

    it('should handle profanity filter errors gracefully', async () => {
      const app2 = express();
      app2.use(express.json());

      const mockProfanityFilter = {
        analyzeProfanity: jest.fn().mockImplementation(() => {
          throw new Error('Filter error');
        })
      };

      app2.use('/api/locations', locationRoutes(locationModel, mockProfanityFilter));

      const locationData = {
        address: 'Test Location',
        description: 'Test description'
      };

      // Should still succeed if profanity filter fails
      const response = await request(app2)
        .post('/api/locations')
        .send(locationData)
        .expect(200);

      expect(response.body).toHaveProperty('id');
    });
  });

  describe('Content-Type validation', () => {
    it('should accept JSON content type', async () => {
      const response = await request(app)
        .post('/api/locations')
        .set('Content-Type', 'application/json')
        .send({ address: 'Test Location' })
        .expect(200);

      expect(response.body).toHaveProperty('id');
    });

    it('should handle malformed JSON', async () => {
      const response = await request(app)
        .post('/api/locations')
        .set('Content-Type', 'application/json')
        .send('{"address": "Test Location"') // Missing closing brace
        .expect(400);

      // Should return bad request for malformed JSON
    });
  });

  describe('Request validation', () => {
    it('should reject overly long addresses for security', async () => {
      const longAddress = 'A'.repeat(1000); // Over 500 character limit

      const response = await request(app)
        .post('/api/locations')
        .send({ address: longAddress })
        .expect(400);

      expect(response.body).toHaveProperty('error');
      expect(response.body.error).toBe('Address must be a string with maximum 500 characters');
    });

    it('should accept addresses within the limit', async () => {
      const validLongAddress = 'A'.repeat(400); // Under 500 character limit

      const response = await request(app)
        .post('/api/locations')
        .send({ address: validLongAddress })
        .expect(200);

      expect(response.body.address).toBe(validLongAddress);
    });

    it('should reject overly long descriptions for security', async () => {
      const longDescription = 'B'.repeat(1500); // Over 1000 character limit

      const response = await request(app)
        .post('/api/locations')
        .send({ 
          address: 'Test Address',
          description: longDescription 
        })
        .expect(400);

      expect(response.body).toHaveProperty('error');
      expect(response.body.error).toBe('Description must be a string with maximum 1000 characters');
    });

    it('should handle special characters in address', async () => {
      const specialAddress = 'Main St & Oak Ave, Grand Rapids, MI 49503';

      const response = await request(app)
        .post('/api/locations')
        .send({ address: specialAddress })
        .expect(200);

      expect(response.body.address).toBe(specialAddress);
    });

    it('should handle unicode characters', async () => {
      const unicodeAddress = 'Straße München, Deutschland 🇩🇪';

      const response = await request(app)
        .post('/api/locations')
        .send({ address: unicodeAddress })
        .expect(200);

      expect(response.body.address).toBe(unicodeAddress);
    });
  });
});