import { beforeAll, describe, expect, it } from '@jest/globals';
import { Express } from 'express';
import request from 'supertest';
import INTERNAL_CONFIG from '../../../../src/config/internal-config.js';
import { expectValidationError } from '../../../helpers/assertion-helpers.js';
import { loginUser, startTestServer } from '../../../helpers/request-helpers.js';

const AUTH_PATH = `${INTERNAL_CONFIG.INTERNAL_API_BASE_PATH_V1}/auth`;

describe('Authentication API Tests', () => {
	let app: Express;

	beforeAll(() => {
		app = startTestServer();
	});

	describe('Login Tests', () => {
		it('should successfully login with valid credentials', async () => {
			const response = await request(app)
				.post(`${AUTH_PATH}/login`)
				.send({
					username: 'admin',
					password: 'admin'
				})
				.expect(200);

			expect(response.body).toHaveProperty('message');
			expect(response.body.message).toBe('Login succeeded');

			// Check for access token and refresh token cookies
			expect(response.headers['set-cookie']).toBeDefined();
			const cookies = response.headers['set-cookie'] as unknown as string[];
			const accessTokenCookie = cookies.find((cookie) =>
				cookie.startsWith(`${INTERNAL_CONFIG.ACCESS_TOKEN_COOKIE_NAME}=`)
			);
			const refreshTokenCookie = cookies.find((cookie) =>
				cookie.startsWith(`${INTERNAL_CONFIG.REFRESH_TOKEN_COOKIE_NAME}=`)
			);
			expect(accessTokenCookie).toBeDefined();
			expect(refreshTokenCookie).toBeDefined();
		});

		it('should return 404 for invalid credentials', async () => {
			const response = await request(app)
				.post(`${AUTH_PATH}/login`)
				.send({
					username: 'admin',
					password: 'invalidpassword'
				})
				.expect(404);

			expect(response.body).toHaveProperty('message');
			expect(response.body.message).toContain('Invalid username or password');
		});

		it('should return 422 when username is missing', async () => {
			const response = await request(app)
				.post(`${AUTH_PATH}/login`)
				.send({
					password: 'user'
				})
				.expect(422);

			expectValidationError(response, 'username', 'Required');
		});

		it('should return 422 when password is missing', async () => {
			const response = await request(app)
				.post(`${AUTH_PATH}/login`)
				.send({
					username: 'user'
				})
				.expect(422);

			expectValidationError(response, 'password', 'Required');
		});

		it('should return 422 when username is too short', async () => {
			const response = await request(app)
				.post(`${AUTH_PATH}/login`)
				.send({
					username: 'usr',
					password: 'user'
				})
				.expect(422);

			expectValidationError(response, 'username', 'Username must be at least 4 characters long');
		});

		it('should return 422 when password is too short', async () => {
			const response = await request(app)
				.post(`${AUTH_PATH}/login`)
				.send({
					username: 'user',
					password: 'usr'
				})
				.expect(422);

			expectValidationError(response, 'password', 'Password must be at least 4 characters long');
		});
	});

	describe('Logout Tests', () => {
		it('should successfully logout', async () => {
			const response = await request(app).post(`${AUTH_PATH}/logout`).expect(200);

			expect(response.body).toHaveProperty('message');
			expect(response.body.message).toBe('Logout successful');

			// Check for cleared cookies
			const cookies = response.headers['set-cookie'] as unknown as string[];
			const accessTokenCookie = cookies.find((cookie) =>
				cookie.startsWith(`${INTERNAL_CONFIG.ACCESS_TOKEN_COOKIE_NAME}=;`)
			);
			const refreshTokenCookie = cookies.find((cookie) =>
				cookie.startsWith(`${INTERNAL_CONFIG.REFRESH_TOKEN_COOKIE_NAME}=;`)
			);
			expect(accessTokenCookie).toBeDefined();
			expect(refreshTokenCookie).toBeDefined();
		});
	});

	describe('Refresh Token Tests', () => {
		it('should successfully refresh token with valid refresh token', async () => {
			// First, login to get a valid refresh token
			const loginResponse = await request(app)
				.post(`${AUTH_PATH}/login`)
				.send({
					username: 'admin',
					password: 'admin'
				})
				.expect(200);

			const cookies = loginResponse.headers['set-cookie'] as unknown as string[];
			const refreshTokenCookie = cookies.find((cookie) =>
				cookie.startsWith(`${INTERNAL_CONFIG.REFRESH_TOKEN_COOKIE_NAME}=`)
			) as string;

			const response = await request(app)
				.post(`${AUTH_PATH}/refresh`)
				.set('Cookie', [refreshTokenCookie])
				.expect(200);

			expect(response.body).toHaveProperty('message');
			expect(response.body.message).toBe('Token refreshed');

			// Check for new access token cookie
			const newCookies = response.headers['set-cookie'] as unknown as string[];
			const newAccessTokenCookie = newCookies.find((cookie) =>
				cookie.startsWith(`${INTERNAL_CONFIG.ACCESS_TOKEN_COOKIE_NAME}=`)
			);
			expect(newAccessTokenCookie).toBeDefined();
		});

		it('should return 400 when no refresh token is provided', async () => {
			const response = await request(app).post(`${AUTH_PATH}/refresh`).expect(400);

			expect(response.body).toHaveProperty('message');
			expect(response.body.message).toContain('No refresh token provided');
		});

		it('should return 400 when refresh token is invalid', async () => {
			const response = await request(app)
				.post(`${AUTH_PATH}/refresh`)
				.set('Cookie', `${INTERNAL_CONFIG.REFRESH_TOKEN_COOKIE_NAME}=invalidtoken`)
				.expect(400);

			expect(response.body).toHaveProperty('message');
			expect(response.body.message).toContain('Invalid refresh token');
		});
	});

	describe('Profile Tests', () => {
		let adminCookie: string;

		beforeAll(async () => {
			adminCookie = await loginUser();
		});

		it('should return 200 and admin profile', async () => {
			const response = await request(app).get(`${AUTH_PATH}/profile`).set('Cookie', adminCookie).expect(200);

			expect(response.body).toHaveProperty('username');
			expect(response.body.username).toBe('admin');
			expect(response.body).toHaveProperty('roles');
			expect(response.body.roles).toEqual(expect.arrayContaining(['admin', 'user']));
		});

		it('should return 401 when no access token is provided', async () => {
			const response = await request(app).get(`${AUTH_PATH}/profile`).expect(401);

			expect(response.body).toHaveProperty('message');
			expect(response.body.message).toContain('Unauthorized');
		});

		it('should return 401 when access token is invalid', async () => {
			const response = await request(app)
				.get(`${AUTH_PATH}/profile`)
				.set('Cookie', `${INTERNAL_CONFIG.ACCESS_TOKEN_COOKIE_NAME}=invalidtoken`)
				.expect(401);

			expect(response.body).toHaveProperty('message');
			expect(response.body.message).toContain('Invalid token');
		});
	});
});