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

import { apiEnvSchema, parseEnv } from './env';

const MINIMAL_ENV = { DATABASE_URL: 'postgresql://user:pass@localhost:5432/db' };

describe('parseEnv', () => {
  it('applies defaults for a minimal environment', () => {
    const env = parseEnv(apiEnvSchema, MINIMAL_ENV);
    expect(env.PORT).toBe(3000);
    expect(env.NODE_ENV).toBe('development');
    expect(env.MIGRATE_ON_START).toBe(true);
  });

  it('requires DATABASE_URL', () => {
    expect(() => parseEnv(apiEnvSchema, {})).toThrowError(/DATABASE_URL/);
  });

  it('rejects non-postgres connection strings', () => {
    expect(() => parseEnv(apiEnvSchema, { DATABASE_URL: 'mysql://x' })).toThrowError(/postgresql/);
  });

  it('fails with a message naming every invalid variable', () => {
    expect(() =>
      parseEnv(apiEnvSchema, { ...MINIMAL_ENV, PORT: 'not-a-port', LOG_LEVEL: 'loud' }),
    ).toThrowError(/PORT.*\n.*LOG_LEVEL/s);
  });
});