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

<?php
/**
 * Database schema tests for Care Booking Block plugin
 *
 * @package CareBookingBlock
 */

/**
 * Test database schema creation and structure
 */
class Test_Database_Schema extends Care_Booking_Test_Case
{

    /**
     * Test that wp_care_booking_restrictions table exists
     */
    public function test_restrictions_table_exists()
    {
        global $wpdb;
        
        $table_name = $wpdb->prefix . 'care_booking_restrictions';
        $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
        
        $this->assertTrue($table_exists, 'wp_care_booking_restrictions table should exist');
    }

    /**
     * Test table has required columns with correct types
     */
    public function test_table_has_correct_columns()
    {
        global $wpdb;
        
        $table_name = $wpdb->prefix . 'care_booking_restrictions';
        $columns = $wpdb->get_results("DESCRIBE $table_name");
        
        // Convert to associative array for easier testing
        $column_data = [];
        foreach ($columns as $column) {
            $column_data[$column->Field] = [
                'Type' => $column->Type,
                'Null' => $column->Null,
                'Key' => $column->Key,
                'Default' => $column->Default,
                'Extra' => $column->Extra
            ];
        }

        // Test required columns exist
        $expected_columns = ['id', 'restriction_type', 'target_id', 'doctor_id', 'is_blocked', 'created_at', 'updated_at'];
        foreach ($expected_columns as $column) {
            $this->assertArrayHasKey($column, $column_data, "Column '$column' should exist");
        }

        // Test column types
        $this->assertEquals('bigint(20) unsigned', $column_data['id']['Type']);
        $this->assertEquals("enum('doctor','service')", $column_data['restriction_type']['Type']);
        $this->assertEquals('bigint(20) unsigned', $column_data['target_id']['Type']);
        $this->assertEquals('bigint(20) unsigned', $column_data['doctor_id']['Type']);
        $this->assertEquals('tinyint(1)', $column_data['is_blocked']['Type']);
        $this->assertEquals('timestamp', $column_data['created_at']['Type']);
        $this->assertEquals('timestamp', $column_data['updated_at']['Type']);

        // Test primary key
        $this->assertEquals('PRI', $column_data['id']['Key']);
        $this->assertEquals('auto_increment', $column_data['id']['Extra']);

        // Test null constraints
        $this->assertEquals('NO', $column_data['id']['Null']);
        $this->assertEquals('NO', $column_data['restriction_type']['Null']);
        $this->assertEquals('NO', $column_data['target_id']['Null']);
        $this->assertEquals('YES', $column_data['doctor_id']['Null']);
        $this->assertEquals('NO', $column_data['is_blocked']['Null']);

        // Test default values
        $this->assertEquals('0', $column_data['is_blocked']['Default']);
        $this->assertEquals('current_timestamp()', $column_data['created_at']['Default']);
    }

    /**
     * Test table has required indexes
     */
    public function test_table_has_required_indexes()
    {
        global $wpdb;
        
        $table_name = $wpdb->prefix . 'care_booking_restrictions';
        $indexes = $wpdb->get_results("SHOW INDEX FROM $table_name");
        
        // Convert to associative array for easier testing
        $index_data = [];
        foreach ($indexes as $index) {
            $index_data[$index->Key_name][] = $index->Column_name;
        }

        // Test required indexes exist
        $this->assertArrayHasKey('PRIMARY', $index_data, 'PRIMARY index should exist');
        $this->assertArrayHasKey('idx_type_target', $index_data, 'idx_type_target index should exist');
        $this->assertArrayHasKey('idx_doctor_service', $index_data, 'idx_doctor_service index should exist');
        $this->assertArrayHasKey('idx_blocked', $index_data, 'idx_blocked index should exist');

        // Test index columns
        $this->assertEquals(['id'], $index_data['PRIMARY']);
        $this->assertEquals(['restriction_type', 'target_id'], $index_data['idx_type_target']);
        $this->assertEquals(['doctor_id', 'target_id'], $index_data['idx_doctor_service']);
        $this->assertEquals(['is_blocked'], $index_data['idx_blocked']);
    }

    /**
     * Test enum constraint on restriction_type
     */
    public function test_restriction_type_enum_constraint()
    {
        global $wpdb;
        
        $table_name = $wpdb->prefix . 'care_booking_restrictions';

        // Test valid enum values
        $valid_insert = $wpdb->insert(
            $table_name,
            [
                'restriction_type' => 'doctor',
                'target_id' => 999,
                'is_blocked' => 1
            ]
        );
        $this->assertNotFalse($valid_insert, 'Should insert valid restriction_type');

        // Clean up
        $wpdb->delete($table_name, ['target_id' => 999]);
        
        // Test invalid enum values (this should fail)
        $invalid_insert = $wpdb->insert(
            $table_name,
            [
                'restriction_type' => 'invalid_type',
                'target_id' => 999,
                'is_blocked' => 1
            ]
        );
        $this->assertFalse($invalid_insert, 'Should not insert invalid restriction_type');
    }

    /**
     * Test auto-increment behavior on id field
     */
    public function test_auto_increment_id_field()
    {
        global $wpdb;
        
        $table_name = $wpdb->prefix . 'care_booking_restrictions';

        // Insert first record
        $result1 = $wpdb->insert(
            $table_name,
            [
                'restriction_type' => 'doctor',
                'target_id' => 999,
                'is_blocked' => 1
            ]
        );
        $this->assertNotFalse($result1);
        $id1 = $wpdb->insert_id;
        
        // Insert second record
        $result2 = $wpdb->insert(
            $table_name,
            [
                'restriction_type' => 'service', 
                'target_id' => 998,
                'doctor_id' => 999,
                'is_blocked' => 1
            ]
        );
        $this->assertNotFalse($result2);
        $id2 = $wpdb->insert_id;

        // Test auto-increment
        $this->assertGreaterThan($id1, $id2, 'Second ID should be greater than first');

        // Clean up
        $wpdb->delete($table_name, ['target_id' => 999]);
        $wpdb->delete($table_name, ['target_id' => 998]);
    }

    /**
     * Test timestamp fields behavior
     */
    public function test_timestamp_fields()
    {
        global $wpdb;
        
        $table_name = $wpdb->prefix . 'care_booking_restrictions';

        // Insert record and check timestamps
        $before_insert = current_time('mysql');
        
        $result = $wpdb->insert(
            $table_name,
            [
                'restriction_type' => 'doctor',
                'target_id' => 999,
                'is_blocked' => 1
            ]
        );
        $this->assertNotFalse($result);
        
        $after_insert = current_time('mysql');
        
        // Get the inserted record
        $record = $wpdb->get_row($wpdb->prepare("SELECT * FROM $table_name WHERE target_id = %d", 999));
        $this->assertNotNull($record);

        // Test created_at is set automatically
        $this->assertNotNull($record->created_at);
        $this->assertGreaterThanOrEqual($before_insert, $record->created_at);
        $this->assertLessThanOrEqual($after_insert, $record->created_at);

        // Test updated_at matches created_at on insert
        $this->assertEquals($record->created_at, $record->updated_at);

        // Wait a moment and update record
        sleep(1);
        $before_update = current_time('mysql');
        
        $wpdb->update(
            $table_name,
            ['is_blocked' => 0],
            ['target_id' => 999]
        );
        
        $after_update = current_time('mysql');
        
        // Get updated record
        $updated_record = $wpdb->get_row($wpdb->prepare("SELECT * FROM $table_name WHERE target_id = %d", 999));
        
        // Test updated_at changed automatically
        $this->assertNotEquals($record->updated_at, $updated_record->updated_at);
        $this->assertGreaterThanOrEqual($before_update, $updated_record->updated_at);
        $this->assertLessThanOrEqual($after_update, $updated_record->updated_at);
        
        // Test created_at remained unchanged
        $this->assertEquals($record->created_at, $updated_record->created_at);

        // Clean up
        $wpdb->delete($table_name, ['target_id' => 999]);
    }

    /**
     * Test database table cleanup on plugin deactivation
     */
    public function test_plugin_deactivation_preserves_data()
    {
        global $wpdb;
        
        $table_name = $wpdb->prefix . 'care_booking_restrictions';

        // Insert test data
        $wpdb->insert(
            $table_name,
            [
                'restriction_type' => 'doctor',
                'target_id' => 999,
                'is_blocked' => 1
            ]
        );

        // Simulate plugin deactivation
        $plugin = CareBookingBlock::get_instance();
        $plugin->deactivate();

        // Check that table and data still exist
        $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
        $this->assertTrue($table_exists, 'Table should still exist after deactivation');
        
        $record_exists = $wpdb->get_var($wpdb->prepare("SELECT COUNT(*) FROM $table_name WHERE target_id = %d", 999));
        $this->assertEquals('1', $record_exists, 'Data should be preserved after deactivation');

        // Clean up
        $wpdb->delete($table_name, ['target_id' => 999]);
    }
}