/**
 * Descomplicar® Crescimento Digital
 * https://descomplicar.pt
 */

<?php
/**
 * Contract tests for Authentication endpoints.
 * 
 * These tests define the API contract and MUST FAIL initially (TDD RED phase).
 *
 * @package Care_API\Tests\Contract
 */

/**
 * Authentication endpoints contract tests.
 */
class Test_Auth_Endpoints_Contract extends Care_API_Test_Case {

	/**
	 * Test POST /wp-json/care/v1/auth/login endpoint contract.
	 * 
	 * @test
	 */
	public function test_auth_login_endpoint_contract() {
		// ARRANGE: Valid login credentials
		$login_data = array(
			'username' => 'test_doctor',
			'password' => 'password123',
		);

		// ACT: Make POST request to login endpoint
		$response = $this->make_request( '/wp-json/care/v1/auth/login', 'POST', $login_data );

		// ASSERT: Response contract
		$this->assertRestResponse( $response, 200 );
		
		$data = $response->get_data();
		$this->assertArrayHasKey( 'token', $data );
		$this->assertArrayHasKey( 'user_id', $data );
		$this->assertArrayHasKey( 'role', $data );
		$this->assertArrayHasKey( 'expires_in', $data );
		
		// Validate token format (JWT)
		$this->assertIsString( $data['token'] );
		$this->assertMatchesRegularExpression( '/^[A-Za-z0-9-_]+\.[A-Za-z0-9-_]+\.[A-Za-z0-9-_]+$/', $data['token'] );
		
		// Validate user data
		$this->assertIsInt( $data['user_id'] );
		$this->assertGreaterThan( 0, $data['user_id'] );
		$this->assertIsString( $data['role'] );
		$this->assertContains( $data['role'], array( 'administrator', 'doctor', 'patient', 'kivicare_receptionist' ) );
	}

	/**
	 * Test POST /wp-json/care/v1/auth/login with invalid credentials.
	 * 
	 * @test
	 */
	public function test_auth_login_invalid_credentials() {
		// ARRANGE: Invalid credentials
		$invalid_data = array(
			'username' => 'nonexistent_user',
			'password' => 'wrong_password',
		);

		// ACT: Make POST request with invalid data
		$response = $this->make_request( '/wp-json/care/v1/auth/login', 'POST', $invalid_data );

		// ASSERT: Error response contract
		$this->assertRestResponse( $response, 401 );
		
		$data = $response->get_data();
		$this->assertArrayHasKey( 'code', $data );
		$this->assertArrayHasKey( 'message', $data );
		$this->assertEquals( 'invalid_credentials', $data['code'] );
	}

	/**
	 * Test POST /wp-json/care/v1/auth/login with missing fields.
	 * 
	 * @test
	 */
	public function test_auth_login_missing_fields() {
		// ARRANGE: Missing username
		$incomplete_data = array(
			'password' => 'password123',
		);

		// ACT: Make POST request with incomplete data
		$response = $this->make_request( '/wp-json/care/v1/auth/login', 'POST', $incomplete_data );

		// ASSERT: Validation error contract
		$this->assertRestResponse( $response, 400 );
		
		$data = $response->get_data();
		$this->assertArrayHasKey( 'code', $data );
		$this->assertEquals( 'rest_missing_callback_param', $data['code'] );
	}

	/**
	 * Test POST /wp-json/care/v1/auth/refresh endpoint contract.
	 * 
	 * @test
	 */
	public function test_auth_refresh_endpoint_contract() {
		// This test will fail initially as the endpoint doesn't exist yet
		$this->markTestIncomplete( 'Refresh endpoint not implemented yet - TDD RED phase' );
		
		// ARRANGE: Valid refresh token (will be implemented)
		$refresh_data = array(
			'refresh_token' => 'valid_refresh_token_here',
		);

		// ACT: Make POST request to refresh endpoint
		$response = $this->make_request( '/wp-json/care/v1/auth/refresh', 'POST', $refresh_data );

		// ASSERT: Response contract (will fail until implemented)
		$this->assertRestResponse( $response, 200 );
		
		$data = $response->get_data();
		$this->assertArrayHasKey( 'token', $data );
		$this->assertArrayHasKey( 'expires_in', $data );
	}

	/**
	 * Test POST /wp-json/care/v1/auth/logout endpoint contract.
	 * 
	 * @test
	 */
	public function test_auth_logout_endpoint_contract() {
		// This test will fail initially as the endpoint doesn't exist yet
		$this->markTestIncomplete( 'Logout endpoint not implemented yet - TDD RED phase' );
		
		// ARRANGE: Authenticated user
		wp_set_current_user( $this->doctor_user );

		// ACT: Make POST request to logout endpoint
		$response = $this->make_request( '/wp-json/care/v1/auth/logout', 'POST' );

		// ASSERT: Response contract (will fail until implemented)
		$this->assertRestResponse( $response, 200 );
		
		$data = $response->get_data();
		$this->assertArrayHasKey( 'message', $data );
		$this->assertEquals( 'Logout successful', $data['message'] );
	}

	/**
	 * Test authentication middleware with invalid token.
	 * 
	 * @test
	 */
	public function test_invalid_token_response_contract() {
		// This test will fail initially as JWT authentication isn't implemented
		$this->markTestIncomplete( 'JWT authentication not implemented yet - TDD RED phase' );
		
		// ARRANGE: Invalid JWT token
		$_SERVER['HTTP_AUTHORIZATION'] = 'Bearer invalid_token_here';

		// ACT: Try to access protected endpoint
		$response = $this->make_request( '/wp-json/care/v1/patients' );

		// ASSERT: Authentication error contract
		$this->assertRestResponse( $response, 401 );
		
		$data = $response->get_data();
		$this->assertArrayHasKey( 'code', $data );
		$this->assertEquals( 'rest_forbidden', $data['code'] );
	}

	/**
	 * Test authentication middleware with expired token.
	 * 
	 * @test
	 */
	public function test_expired_token_response_contract() {
		// This test will fail initially as JWT authentication isn't implemented
		$this->markTestIncomplete( 'JWT authentication not implemented yet - TDD RED phase' );
		
		// ARRANGE: Expired JWT token
		$_SERVER['HTTP_AUTHORIZATION'] = 'Bearer expired_token_here';

		// ACT: Try to access protected endpoint
		$response = $this->make_request( '/wp-json/care/v1/patients' );

		// ASSERT: Token expiry error contract
		$this->assertRestResponse( $response, 401 );
		
		$data = $response->get_data();
		$this->assertArrayHasKey( 'code', $data );
		$this->assertEquals( 'jwt_auth_token_expired', $data['code'] );
	}
}