/**
 * User model unit tests
 */

import { assertEquals, assertExists, assertRejects } from 'jsr:@std/assert';
import { describe, it, beforeAll, afterAll, beforeEach } from 'jsr:@std/testing/bdd';
import { setupTestDb, teardownTestDb, cleanupTestDb } from '../../helpers/index.ts';
import { User } from '../../../ts/models/user.ts';

describe('User Model', () => {
  beforeAll(async () => {
    await setupTestDb();
  });

  afterAll(async () => {
    await teardownTestDb();
  });

  beforeEach(async () => {
    await cleanupTestDb();
  });

  describe('createUser', () => {
    it('should create a user with valid data', async () => {
      const passwordHash = await User.hashPassword('testpassword');
      const user = await User.createUser({
        email: 'test@example.com',
        username: 'testuser',
        passwordHash,
        displayName: 'Test User',
      });

      assertExists(user.id);
      assertEquals(user.email, 'test@example.com');
      assertEquals(user.username, 'testuser');
      assertEquals(user.displayName, 'Test User');
      assertEquals(user.status, 'pending_verification');
      assertEquals(user.emailVerified, false);
      assertEquals(user.isPlatformAdmin, false);
    });

    it('should lowercase email and username', async () => {
      const passwordHash = await User.hashPassword('testpassword');
      const user = await User.createUser({
        email: 'TEST@EXAMPLE.COM',
        username: 'TestUser',
        passwordHash,
      });

      assertEquals(user.email, 'test@example.com');
      assertEquals(user.username, 'testuser');
    });

    it('should use username as displayName if not provided', async () => {
      const passwordHash = await User.hashPassword('testpassword');
      const user = await User.createUser({
        email: 'test2@example.com',
        username: 'testuser2',
        passwordHash,
      });

      assertEquals(user.displayName, 'testuser2');
    });
  });

  describe('findByEmail', () => {
    it('should find user by email (case-insensitive)', async () => {
      const passwordHash = await User.hashPassword('testpassword');
      await User.createUser({
        email: 'findme@example.com',
        username: 'findme',
        passwordHash,
      });

      const found = await User.findByEmail('FINDME@example.com');
      assertExists(found);
      assertEquals(found.email, 'findme@example.com');
    });

    it('should return null for non-existent email', async () => {
      const found = await User.findByEmail('nonexistent@example.com');
      assertEquals(found, null);
    });
  });

  describe('findByUsername', () => {
    it('should find user by username (case-insensitive)', async () => {
      const passwordHash = await User.hashPassword('testpassword');
      await User.createUser({
        email: 'user@example.com',
        username: 'findbyname',
        passwordHash,
      });

      const found = await User.findByUsername('FINDBYNAME');
      assertExists(found);
      assertEquals(found.username, 'findbyname');
    });
  });

  describe('findById', () => {
    it('should find user by ID', async () => {
      const passwordHash = await User.hashPassword('testpassword');
      const created = await User.createUser({
        email: 'byid@example.com',
        username: 'byid',
        passwordHash,
      });

      const found = await User.findById(created.id);
      assertExists(found);
      assertEquals(found.id, created.id);
    });
  });

  describe('password hashing', () => {
    it('should hash password with salt', async () => {
      const hash = await User.hashPassword('mypassword');
      assertExists(hash);
      assertEquals(hash.includes(':'), true);

      const [salt, _hashPart] = hash.split(':');
      assertEquals(salt.length, 32); // 16 bytes = 32 hex chars
    });

    it('should produce different hashes for same password', async () => {
      const hash1 = await User.hashPassword('samepassword');
      const hash2 = await User.hashPassword('samepassword');

      // Different salts should produce different hashes
      assertEquals(hash1 !== hash2, true);
    });
  });

  describe('verifyPassword', () => {
    it('should verify correct password', async () => {
      const passwordHash = await User.hashPassword('correctpassword');
      const user = await User.createUser({
        email: 'verify@example.com',
        username: 'verifyuser',
        passwordHash,
      });

      const isValid = await user.verifyPassword('correctpassword');
      assertEquals(isValid, true);
    });

    it('should reject incorrect password', async () => {
      const passwordHash = await User.hashPassword('correctpassword');
      const user = await User.createUser({
        email: 'reject@example.com',
        username: 'rejectuser',
        passwordHash,
      });

      const isValid = await user.verifyPassword('wrongpassword');
      assertEquals(isValid, false);
    });

    it('should reject empty password', async () => {
      const passwordHash = await User.hashPassword('correctpassword');
      const user = await User.createUser({
        email: 'empty@example.com',
        username: 'emptyuser',
        passwordHash,
      });

      const isValid = await user.verifyPassword('');
      assertEquals(isValid, false);
    });
  });

  describe('isActive', () => {
    it('should return true for active status', async () => {
      const passwordHash = await User.hashPassword('test');
      const user = await User.createUser({
        email: 'active@example.com',
        username: 'activeuser',
        passwordHash,
      });
      user.status = 'active';
      await user.save();

      assertEquals(user.isActive, true);
    });

    it('should return false for suspended status', async () => {
      const passwordHash = await User.hashPassword('test');
      const user = await User.createUser({
        email: 'suspended@example.com',
        username: 'suspendeduser',
        passwordHash,
      });
      user.status = 'suspended';

      assertEquals(user.isActive, false);
    });
  });

  describe('isPlatformAdmin', () => {
    it('should default to false', async () => {
      const passwordHash = await User.hashPassword('test');
      const user = await User.createUser({
        email: 'notadmin@example.com',
        username: 'notadmin',
        passwordHash,
      });

      assertEquals(user.isPlatformAdmin, false);
      assertEquals(user.isSystemAdmin, false);
    });

    it('should be settable to true', async () => {
      const passwordHash = await User.hashPassword('test');
      const user = await User.createUser({
        email: 'admin@example.com',
        username: 'adminuser',
        passwordHash,
      });
      user.isPlatformAdmin = true;
      await user.save();

      const found = await User.findById(user.id);
      assertEquals(found!.isPlatformAdmin, true);
      assertEquals(found!.isSystemAdmin, true);
    });
  });
});