import request from 'supertest';
import express from 'express';
import fundsRoutes from '../../src/routes/funds.routes';
import { exec } from 'child_process';

// Mock de child_process
jest.mock('child_process');
const mockExec = exec as jest.MockedFunction<typeof exec>;

describe('Funds Routes', () => {
  let app: express.Application;

  beforeEach(() => {
    app = express();
    app.use(express.json());
    app.use('/api/v1/funds', fundsRoutes);
    
    // Reset des mocks
    jest.clearAllMocks();
  });

  describe('POST /api/v1/funds/transfer', () => {
    it('devrait transférer des fonds avec succès', async () => {
      // Mock des commandes bitcoin-cli
      mockExec.mockImplementation((command, callback) => {
        if (command.includes('getblockchaininfo')) {
          callback(null, { stdout: '{"chain":"signet","blocks":1000}', stderr: '' });
        } else if (command.includes('loadwallet')) {
          callback(null, { stdout: '{"name":"default","warning":""}', stderr: '' });
        } else if (command.includes('getbalance')) {
          callback(null, { stdout: '1.5', stderr: '' });
        } else if (command.includes('getnewaddress')) {
          callback(null, { stdout: 'bc1qtest123', stderr: '' });
        } else if (command.includes('sendtoaddress')) {
          callback(null, { stdout: 'txid123456789', stderr: '' });
        } else if (command.includes('generatetoaddress')) {
          callback(null, { stdout: '["blockhash123"]', stderr: '' });
        } else if (command.includes('restart')) {
          callback(null, { stdout: '', stderr: '' });
        }
        return {} as any;
      });

      const response = await request(app)
        .post('/api/v1/funds/transfer')
        .send({
          amount: 0.01,
          source: 'mining_mnemonic',
          target: 'default'
        });

      expect(response.status).toBe(200);
      expect(response.body.success).toBe(true);
      expect(response.body.message).toContain('Transfert de 0.01 BTC réussi');
    });

    it('devrait retourner une erreur si le solde est insuffisant', async () => {
      mockExec.mockImplementation((command, callback) => {
        if (command.includes('getbalance')) {
          callback(null, { stdout: '0.001', stderr: '' });
        } else {
          callback(null, { stdout: '', stderr: '' });
        }
        return {} as any;
      });

      const response = await request(app)
        .post('/api/v1/funds/transfer')
        .send({
          amount: 0.01,
          source: 'mining_mnemonic',
          target: 'default'
        });

      expect(response.status).toBe(400);
      expect(response.body.success).toBe(false);
      expect(response.body.error).toContain('Solde insuffisant');
    });

    it('devrait gérer les erreurs de commande bitcoin-cli', async () => {
      mockExec.mockImplementation((command, callback) => {
        callback(new Error('Bitcoin Core not running'), { stdout: '', stderr: 'Error' });
        return {} as any;
      });

      const response = await request(app)
        .post('/api/v1/funds/transfer')
        .send({
          amount: 0.01,
          source: 'mining_mnemonic',
          target: 'default'
        });

      expect(response.status).toBe(500);
      expect(response.body.success).toBe(false);
      expect(response.body.error).toContain('Erreur lors du transfert');
    });
  });

  describe('GET /api/v1/funds/check', () => {
    it('devrait vérifier les fonds avec succès', async () => {
      mockExec.mockImplementation((command, callback) => {
        if (command.includes('cat /home/bitcoin/.4nk/default')) {
          callback(null, { stdout: '{"outputs":[{"value":1000000}]}', stderr: '' });
        } else if (command.includes('getbalance')) {
          callback(null, { stdout: '0.01', stderr: '' });
        } else {
          callback(null, { stdout: '', stderr: '' });
        }
        return {} as any;
      });

      const response = await request(app)
        .get('/api/v1/funds/check');

      expect(response.status).toBe(200);
      expect(response.body.success).toBe(true);
      expect(response.body.relay.outputsCount).toBe(1);
      expect(response.body.relay.balance).toBe(0.01);
    });

    it('devrait gérer les erreurs de vérification', async () => {
      mockExec.mockImplementation((command, callback) => {
        callback(new Error('File not found'), { stdout: '', stderr: 'Error' });
        return {} as any;
      });

      const response = await request(app)
        .get('/api/v1/funds/check');

      expect(response.status).toBe(500);
      expect(response.body.success).toBe(false);
      expect(response.body.error).toContain('Erreur lors de la vérification');
    });
  });
});