import { exec } from 'child_process';
import path from 'path';
import { describe, it, expect } from 'vitest';

describe('Environment Variable Validation (Adversarial Stress)', () => {
  const envJsPath = path.resolve(__dirname, '../../dist/config/env.js');

  it('should exit with 1 when required environment variables are missing', () => {
    return new Promise<void>((resolve, reject) => {
      const testEnv = {
        PATH: process.env.PATH,
        NODE_ENV: 'test',
      };

      // Run from /tmp so dotenv cannot load the local backend/.env file
      exec(`node ${envJsPath}`, { env: testEnv, cwd: '/tmp' }, (error, stdout, stderr) => {
        try {
          // Expect failure (exit code 1)
          expect(error).not.toBeNull();
          expect(error!.code).toBe(1);
          expect(stderr).toContain('❌ Invalid environment configuration:');
          expect(stderr).toContain('DATABASE_URL');
          expect(stderr).toContain('JWT_SECRET');
          resolve();
        } catch (err) {
          reject(err);
        }
      });
    });
  }, 15000);

  it('should exit with 1 when DATABASE_URL is not a valid URL format', () => {
    return new Promise<void>((resolve, reject) => {
      const testEnv = {
        PATH: process.env.PATH,
        NODE_ENV: 'test',
        DATABASE_URL: 'invalid-postgres-string',
        JWT_SECRET: 'a'.repeat(32), // Valid length
      };

      exec(`node ${envJsPath}`, { env: testEnv, cwd: '/tmp' }, (error, stdout, stderr) => {
        try {
          // Expect failure (exit code 1)
          expect(error).not.toBeNull();
          expect(error!.code).toBe(1);
          expect(stderr).toContain('❌ Invalid environment configuration:');
          expect(stderr).toContain('DATABASE_URL');
          expect(stderr).not.toContain('JWT_SECRET');
          resolve();
        } catch (err) {
          reject(err);
        }
      });
    });
  }, 15000);

  it('should exit with 1 when JWT_SECRET is too short', () => {
    return new Promise<void>((resolve, reject) => {
      const testEnv = {
        PATH: process.env.PATH,
        NODE_ENV: 'test',
        DATABASE_URL: 'postgresql://postgres:postgres@localhost:5432/coaxyspanel',
        JWT_SECRET: 'too-short', // Must be min 32 chars
      };

      exec(`node ${envJsPath}`, { env: testEnv, cwd: '/tmp' }, (error, stdout, stderr) => {
        try {
          // Expect failure (exit code 1)
          expect(error).not.toBeNull();
          expect(error!.code).toBe(1);
          expect(stderr).toContain('❌ Invalid environment configuration:');
          expect(stderr).not.toContain('DATABASE_URL');
          expect(stderr).toContain('JWT_SECRET');
          resolve();
        } catch (err) {
          reject(err);
        }
      });
    });
  }, 15000);

  it('should pass validation (exit code 0) when all variables are valid', () => {
    return new Promise<void>((resolve, reject) => {
      const testEnv = {
        PATH: process.env.PATH,
        NODE_ENV: 'test',
        DATABASE_URL: 'postgresql://postgres:postgres@localhost:5432/coaxyspanel',
        JWT_SECRET: 'a'.repeat(32),
      };

      exec(`node ${envJsPath}`, { env: testEnv, cwd: '/tmp' }, (error, stdout, stderr) => {
        try {
          expect(error).toBeNull();
          expect(stderr).toBe('');
          resolve();
        } catch (err) {
          reject(err);
        }
      });
    });
  }, 15000);
});