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

<?php
/**
 * Integration tests for Multi-Doctor Clinic Data Access (User Story 3).
 * 
 * These tests validate complete user stories and MUST FAIL initially (TDD RED phase).
 *
 * @package Care_API\Tests\Integration
 */

/**
 * Clinic data access integration tests.
 * 
 * User Story: Multi-doctor clinic data access with proper isolation
 */
class Test_Clinic_Data_Access extends Care_API_Test_Case {

	/**
	 * Test multi-doctor clinic data access workflow.
	 * 
	 * @test
	 */
	public function test_multi_doctor_clinic_data_access_workflow() {
		// This test will fail initially as clinic isolation isn't implemented
		$this->markTestIncomplete( 'Multi-doctor clinic data access not implemented yet - TDD RED phase' );
		
		// ARRANGE: Setup multi-doctor clinic scenario
		$clinic1_id = $this->create_test_clinic();
		$clinic2_id = $this->create_test_clinic();
		
		// Create additional doctors
		$doctor2_id = $this->factory->user->create( array(
			'user_login' => 'doctor2',
			'user_email' => 'doctor2@clinic.com',
			'role'       => 'doctor',
		) );
		
		$doctor3_id = $this->factory->user->create( array(
			'user_login' => 'doctor3',
			'user_email' => 'doctor3@clinic.com',
			'role'       => 'doctor',
		) );

		global $wpdb;
		
		// Map doctors to clinics
		$wpdb->insert( $wpdb->prefix . 'kc_doctor_clinic_mappings', array( 'doctor_id' => $this->doctor_user, 'clinic_id' => $clinic1_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_doctor_clinic_mappings', array( 'doctor_id' => $doctor2_id, 'clinic_id' => $clinic1_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_doctor_clinic_mappings', array( 'doctor_id' => $doctor3_id, 'clinic_id' => $clinic2_id ) );
		
		// Create patients in different clinics
		$patient1_id = $this->factory->user->create( array( 'role' => 'patient' ) );
		$patient2_id = $this->factory->user->create( array( 'role' => 'patient' ) );
		$patient3_id = $this->factory->user->create( array( 'role' => 'patient' ) );
		
		$wpdb->insert( $wpdb->prefix . 'kc_patient_clinic_mappings', array( 'patient_id' => $patient1_id, 'clinic_id' => $clinic1_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_patient_clinic_mappings', array( 'patient_id' => $patient2_id, 'clinic_id' => $clinic1_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_patient_clinic_mappings', array( 'patient_id' => $patient3_id, 'clinic_id' => $clinic2_id ) );

		// STEP 1: Doctor 1 creates appointment with Patient 1
		$appointment1_id = $this->create_test_appointment( $clinic1_id, $this->doctor_user, $patient1_id );
		
		// Doctor 1 creates encounter
		$encounter1_response = $this->make_request( '/wp-json/care/v1/encounters', 'POST', array(
			'appointment_id' => $appointment1_id,
			'description'    => 'First encounter by Doctor 1',
			'diagnosis'      => 'Common cold',
		), $this->doctor_user );
		
		$this->assertRestResponse( $encounter1_response, 201 );
		$encounter1_id = $encounter1_response->get_data()['id'];

		// STEP 2: Doctor 2 should be able to access same patient data (same clinic)
		$patient_access_response = $this->make_request( "/wp-json/care/v1/patients/{$patient1_id}", 'GET', array(), $doctor2_id );
		$this->assertRestResponse( $patient_access_response, 200 );
		
		$patient_data = $patient_access_response->get_data();
		$this->assertEquals( $patient1_id, $patient_data['id'] );
		$this->assertEquals( $clinic1_id, $patient_data['clinic_id'] );

		// STEP 3: Doctor 2 should see Doctor 1's encounter for same patient
		$encounters_response = $this->make_request( "/wp-json/care/v1/patients/{$patient1_id}/encounters", 'GET', array(), $doctor2_id );
		$this->assertRestResponse( $encounters_response, 200 );
		
		$encounters = $encounters_response->get_data();
		$this->assertCount( 1, $encounters );
		$this->assertEquals( $encounter1_id, $encounters[0]['id'] );
		$this->assertEquals( $this->doctor_user, $encounters[0]['doctor_id'] );

		// STEP 4: Doctor 2 can add notes to the encounter
		$update_response = $this->make_request( "/wp-json/care/v1/encounters/{$encounter1_id}", 'PUT', array(
			'description' => 'First encounter by Doctor 1. Additional notes by Doctor 2: Patient responded well to treatment.',
		), $doctor2_id );
		
		$this->assertRestResponse( $update_response, 200 );

		// STEP 5: Doctor 3 (different clinic) should NOT access Patient 1
		$cross_clinic_response = $this->make_request( "/wp-json/care/v1/patients/{$patient1_id}", 'GET', array(), $doctor3_id );
		$this->assertRestResponse( $cross_clinic_response, 403 );
		
		$error_data = $cross_clinic_response->get_data();
		$this->assertEquals( 'clinic_access_denied', $error_data['code'] );

		// STEP 6: Doctor 3 should NOT see encounters from different clinic
		$cross_encounters_response = $this->make_request( "/wp-json/care/v1/encounters", 'GET', array( 'patient_id' => $patient1_id ), $doctor3_id );
		$this->assertRestResponse( $cross_encounters_response, 403 );

		// STEP 7: Verify clinic-filtered patient lists
		$clinic1_patients_response = $this->make_request( '/wp-json/care/v1/patients', 'GET', array(), $this->doctor_user );
		$this->assertRestResponse( $clinic1_patients_response, 200 );
		
		$clinic1_patients = $clinic1_patients_response->get_data()['data'];
		$clinic1_patient_ids = wp_list_pluck( $clinic1_patients, 'id' );
		
		// Should include patients from clinic 1 only
		$this->assertContains( $patient1_id, $clinic1_patient_ids );
		$this->assertContains( $patient2_id, $clinic1_patient_ids );
		$this->assertNotContains( $patient3_id, $clinic1_patient_ids );

		// STEP 8: Verify appointment scheduling across doctors in same clinic
		$appointment2_id = $this->create_test_appointment( $clinic1_id, $doctor2_id, $patient2_id );
		
		// Doctor 1 should see Doctor 2's appointments in clinic view
		$clinic_appointments_response = $this->make_request( '/wp-json/care/v1/appointments', 'GET', array( 'clinic_id' => $clinic1_id ), $this->doctor_user );
		$this->assertRestResponse( $clinic_appointments_response, 200 );
		
		$appointments = $clinic_appointments_response->get_data()['data'];
		$appointment_ids = wp_list_pluck( $appointments, 'id' );
		
		$this->assertContains( $appointment1_id, $appointment_ids );
		$this->assertContains( $appointment2_id, $appointment_ids );
	}

	/**
	 * Test clinic admin permissions and data access.
	 * 
	 * @test
	 */
	public function test_clinic_admin_data_access() {
		// This test will fail initially as clinic admin roles aren't implemented
		$this->markTestIncomplete( 'Clinic admin permissions not implemented yet - TDD RED phase' );
		
		// ARRANGE: Setup clinic with admin
		$clinic_id = $this->create_test_clinic();
		
		$clinic_admin_id = $this->factory->user->create( array(
			'user_login' => 'clinic_admin',
			'user_email' => 'admin@clinic.com',
			'role'       => 'administrator',
		) );
		
		global $wpdb;
		
		// Update clinic to have admin
		$wpdb->update( 
			$wpdb->prefix . 'kc_clinics', 
			array( 'clinic_admin_id' => $clinic_admin_id ),
			array( 'id' => $clinic_id )
		);

		// Map doctor and patients to clinic
		$wpdb->insert( $wpdb->prefix . 'kc_doctor_clinic_mappings', array( 'doctor_id' => $this->doctor_user, 'clinic_id' => $clinic_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_patient_clinic_mappings', array( 'patient_id' => $this->patient_user, 'clinic_id' => $clinic_id ) );

		// Create appointment and encounter
		$appointment_id = $this->create_test_appointment( $clinic_id, $this->doctor_user, $this->patient_user );
		$encounter_response = $this->make_request( '/wp-json/care/v1/encounters', 'POST', array(
			'appointment_id' => $appointment_id,
			'description'    => 'Test encounter for admin access',
		), $this->doctor_user );
		
		$encounter_id = $encounter_response->get_data()['id'];

		// ACT & ASSERT: Clinic admin should have full access to clinic data
		
		// Access patient data
		$patient_response = $this->make_request( "/wp-json/care/v1/patients/{$this->patient_user}", 'GET', array(), $clinic_admin_id );
		$this->assertRestResponse( $patient_response, 200 );
		
		// Access encounter data
		$encounter_response = $this->make_request( "/wp-json/care/v1/encounters/{$encounter_id}", 'GET', array(), $clinic_admin_id );
		$this->assertRestResponse( $encounter_response, 200 );
		
		// View clinic statistics
		$stats_response = $this->make_request( "/wp-json/care/v1/clinics/{$clinic_id}/statistics", 'GET', array(), $clinic_admin_id );
		$this->assertRestResponse( $stats_response, 200 );
		
		$stats = $stats_response->get_data();
		$this->assertArrayHasKey( 'total_patients', $stats );
		$this->assertArrayHasKey( 'total_appointments', $stats );
		$this->assertArrayHasKey( 'total_encounters', $stats );
	}

	/**
	 * Test data access auditing and logging.
	 * 
	 * @test
	 */
	public function test_clinic_data_access_auditing() {
		// This test will fail initially as auditing isn't implemented
		$this->markTestIncomplete( 'Data access auditing not implemented yet - TDD RED phase' );
		
		// ARRANGE: Setup scenario with different doctors
		$clinic_id = $this->create_test_clinic();
		$doctor2_id = $this->factory->user->create( array( 'role' => 'doctor' ) );
		
		global $wpdb;
		$wpdb->insert( $wpdb->prefix . 'kc_doctor_clinic_mappings', array( 'doctor_id' => $this->doctor_user, 'clinic_id' => $clinic_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_doctor_clinic_mappings', array( 'doctor_id' => $doctor2_id, 'clinic_id' => $clinic_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_patient_clinic_mappings', array( 'patient_id' => $this->patient_user, 'clinic_id' => $clinic_id ) );

		// Track audit log entries
		$audit_entries = array();
		add_action( 'kivicare_api_audit_log', function( $action, $resource_type, $resource_id, $user_id ) use ( &$audit_entries ) {
			$audit_entries[] = compact( 'action', 'resource_type', 'resource_id', 'user_id' );
		}, 10, 4 );

		// ACT: Multiple data access operations
		$this->make_request( "/wp-json/care/v1/patients/{$this->patient_user}", 'GET', array(), $this->doctor_user );
		$this->make_request( "/wp-json/care/v1/patients/{$this->patient_user}", 'GET', array(), $doctor2_id );
		$this->make_request( "/wp-json/care/v1/patients/{$this->patient_user}", 'PUT', array( 'phone' => '+351999888777' ), $this->doctor_user );

		// ASSERT: Audit entries were created
		$this->assertCount( 3, $audit_entries );
		$this->assertEquals( 'read', $audit_entries[0]['action'] );
		$this->assertEquals( 'patient', $audit_entries[0]['resource_type'] );
		$this->assertEquals( $this->patient_user, $audit_entries[0]['resource_id'] );
		$this->assertEquals( $this->doctor_user, $audit_entries[0]['user_id'] );
		
		$this->assertEquals( 'update', $audit_entries[2]['action'] );
	}

	/**
	 * Test clinic data isolation and security.
	 * 
	 * @test
	 */
	public function test_clinic_data_isolation_security() {
		// This test will fail initially as security isolation isn't implemented
		$this->markTestIncomplete( 'Clinic data isolation security not implemented yet - TDD RED phase' );
		
		// ARRANGE: Two separate clinics with sensitive data
		$clinic1_id = $this->create_test_clinic();
		$clinic2_id = $this->create_test_clinic();
		
		$doctor_clinic1 = $this->factory->user->create( array( 'role' => 'doctor' ) );
		$doctor_clinic2 = $this->factory->user->create( array( 'role' => 'doctor' ) );
		
		$patient_clinic1 = $this->factory->user->create( array( 'role' => 'patient' ) );
		$patient_clinic2 = $this->factory->user->create( array( 'role' => 'patient' ) );
		
		global $wpdb;
		
		// Map to respective clinics
		$wpdb->insert( $wpdb->prefix . 'kc_doctor_clinic_mappings', array( 'doctor_id' => $doctor_clinic1, 'clinic_id' => $clinic1_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_doctor_clinic_mappings', array( 'doctor_id' => $doctor_clinic2, 'clinic_id' => $clinic2_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_patient_clinic_mappings', array( 'patient_id' => $patient_clinic1, 'clinic_id' => $clinic1_id ) );
		$wpdb->insert( $wpdb->prefix . 'kc_patient_clinic_mappings', array( 'patient_id' => $patient_clinic2, 'clinic_id' => $clinic2_id ) );

		// Create sensitive encounters
		$appointment1_id = $this->create_test_appointment( $clinic1_id, $doctor_clinic1, $patient_clinic1 );
		$appointment2_id = $this->create_test_appointment( $clinic2_id, $doctor_clinic2, $patient_clinic2 );
		
		$sensitive_encounter1 = $this->make_request( '/wp-json/care/v1/encounters', 'POST', array(
			'appointment_id' => $appointment1_id,
			'description'    => 'CONFIDENTIAL: Mental health consultation - Depression treatment',
			'diagnosis'      => 'Major Depressive Disorder (F32.9)',
		), $doctor_clinic1 );
		
		$sensitive_encounter2 = $this->make_request( '/wp-json/care/v1/encounters', 'POST', array(
			'appointment_id' => $appointment2_id,
			'description'    => 'CONFIDENTIAL: Substance abuse treatment consultation',
			'diagnosis'      => 'Alcohol Use Disorder (F10.20)',
		), $doctor_clinic2 );
		
		$encounter1_id = $sensitive_encounter1->get_data()['id'];
		$encounter2_id = $sensitive_encounter2->get_data()['id'];

		// Security test scenarios
		$security_tests = array(
			// Cross-clinic patient access
			array(
				'test'     => 'Cross-clinic patient access',
				'request'  => "/wp-json/care/v1/patients/{$patient_clinic2}",
				'method'   => 'GET',
				'user_id'  => $doctor_clinic1,
				'expected' => 403,
			),
			// Cross-clinic encounter access
			array(
				'test'     => 'Cross-clinic encounter access',
				'request'  => "/wp-json/care/v1/encounters/{$encounter2_id}",
				'method'   => 'GET',
				'user_id'  => $doctor_clinic1,
				'expected' => 403,
			),
			// Direct database manipulation attempts via API
			array(
				'test'     => 'SQL injection attempt',
				'request'  => '/wp-json/care/v1/patients',
				'method'   => 'GET',
				'data'     => array( 'clinic_id' => "1 OR 1=1; DROP TABLE {$wpdb->prefix}kc_clinics; --" ),
				'user_id'  => $doctor_clinic1,
				'expected' => 400,
			),
		);

		foreach ( $security_tests as $test ) {
			$response = $this->make_request( 
				$test['request'], 
				$test['method'], 
				isset( $test['data'] ) ? $test['data'] : array(), 
				$test['user_id'] 
			);
			
			$this->assertRestResponse( $response, $test['expected'], "Failed security test: {$test['test']}" );
		}

		// Verify no data leakage in responses
		$clinic1_patients_response = $this->make_request( '/wp-json/care/v1/patients', 'GET', array(), $doctor_clinic1 );
		$patients = $clinic1_patients_response->get_data()['data'];
		
		foreach ( $patients as $patient ) {
			$this->assertEquals( $clinic1_id, $patient['clinic_id'], 'Patient from wrong clinic returned in response' );
		}
	}
}