<?php

namespace App\Database\Migrations;

use CodeIgniter\Database\Migration;

class CreateAuditLogs extends Migration {
  public function up() {
    // Drop old audit tables if they exist
    $this->forge->dropTable('patreglog', true);
    $this->forge->dropTable('patvisitlog', true);
    $this->forge->dropTable('specimenlog', true);

    // Create data_audit_log table
    $this->forge->addField([
      'id' => ['type' => 'BIGINT', 'constraint' => 20, 'unsigned' => true, 'auto_increment' => true],
      'operation' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => false],
      'entity_type' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => false],
      'entity_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => false],
      'table_name' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'field_name' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'previous_value' => ['type' => 'JSON', 'null' => true],
      'new_value' => ['type' => 'JSON', 'null' => true],
      'mechanism' => ['type' => 'ENUM', 'constraint' => ['MANUAL', 'AUTOMATIC'], 'null' => false, 'default' => 'MANUAL'],
      'application_id' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => true],
      'web_page' => ['type' => 'VARCHAR', 'constraint' => 500, 'null' => true],
      'session_id' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'event_type' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'site_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => true],
      'workstation_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => true],
      'pc_name' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'ip_address' => ['type' => 'VARCHAR', 'constraint' => 45, 'null' => true],
      'user_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => false],
      'created_at' => ['type' => 'DATETIME', 'null' => false],
      'reason' => ['type' => 'TEXT', 'null' => true],
      'context' => ['type' => 'JSON', 'null' => true]
    ]);
    $this->forge->addKey('id', true);
    $this->forge->addKey('idx_operation_created', ['operation', 'created_at']);
    $this->forge->addKey('idx_entity', ['entity_type', 'entity_id', 'created_at']);
    $this->forge->addKey('idx_user_created', ['user_id', 'created_at']);
    $this->forge->addKey('idx_mechanism', ['mechanism', 'created_at']);
    $this->forge->addKey('idx_table', ['table_name', 'created_at']);
    $this->forge->addKey('idx_site', ['site_id', 'created_at']);
    $this->forge->addKey('idx_created', 'created_at');
    $this->forge->addKey('idx_session', ['session_id', 'created_at']);
    $this->forge->createTable('data_audit_log', true);

    // Create service_audit_log table
    $this->forge->addField([
      'id' => ['type' => 'BIGINT', 'constraint' => 20, 'unsigned' => true, 'auto_increment' => true],
      'operation' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => false],
      'entity_type' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => false],
      'entity_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => false],
      'service_class' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => true],
      'resource_type' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'resource_details' => ['type' => 'JSON', 'null' => true],
      'previous_value' => ['type' => 'JSON', 'null' => true],
      'new_value' => ['type' => 'JSON', 'null' => true],
      'mechanism' => ['type' => 'ENUM', 'constraint' => ['MANUAL', 'AUTOMATIC'], 'null' => false, 'default' => 'AUTOMATIC'],
      'application_id' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => true],
      'service_name' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'session_id' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'event_type' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'site_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => true],
      'workstation_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => true],
      'pc_name' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'ip_address' => ['type' => 'VARCHAR', 'constraint' => 45, 'null' => true],
      'port' => ['type' => 'INT', 'null' => true],
      'user_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => false],
      'created_at' => ['type' => 'DATETIME', 'null' => false],
      'reason' => ['type' => 'TEXT', 'null' => true],
      'context' => ['type' => 'JSON', 'null' => true]
    ]);
    $this->forge->addKey('id', true);
    $this->forge->addKey('idx_operation_created', ['operation', 'created_at']);
    $this->forge->addKey('idx_entity', ['entity_type', 'entity_id', 'created_at']);
    $this->forge->addKey('idx_service_class', ['service_class', 'created_at']);
    $this->forge->addKey('idx_user_created', ['user_id', 'created_at']);
    $this->forge->addKey('idx_mechanism', ['mechanism', 'created_at']);
    $this->forge->addKey('idx_site', ['site_id', 'created_at']);
    $this->forge->addKey('idx_created', 'created_at');
    $this->forge->createTable('service_audit_log', true);

    // Create security_audit_log table
    $this->forge->addField([
      'id' => ['type' => 'BIGINT', 'constraint' => 20, 'unsigned' => true, 'auto_increment' => true],
      'operation' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => false],
      'entity_type' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => false],
      'entity_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => false],
      'security_class' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => true],
      'resource_path' => ['type' => 'VARCHAR', 'constraint' => 500, 'null' => true],
      'previous_value' => ['type' => 'JSON', 'null' => true],
      'new_value' => ['type' => 'JSON', 'null' => true],
      'mechanism' => ['type' => 'ENUM', 'constraint' => ['MANUAL', 'AUTOMATIC'], 'null' => false, 'default' => 'MANUAL'],
      'application_id' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => true],
      'web_page' => ['type' => 'VARCHAR', 'constraint' => 500, 'null' => true],
      'session_id' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'event_type' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'site_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => true],
      'workstation_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => true],
      'pc_name' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'ip_address' => ['type' => 'VARCHAR', 'constraint' => 45, 'null' => true],
      'user_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => false],
      'created_at' => ['type' => 'DATETIME', 'null' => false],
      'reason' => ['type' => 'TEXT', 'null' => true],
      'context' => ['type' => 'JSON', 'null' => true]
    ]);
    $this->forge->addKey('id', true);
    $this->forge->addKey('idx_operation_created', ['operation', 'created_at']);
    $this->forge->addKey('idx_entity', ['entity_type', 'entity_id', 'created_at']);
    $this->forge->addKey('idx_security_class', ['security_class', 'created_at']);
    $this->forge->addKey('idx_user_created', ['user_id', 'created_at']);
    $this->forge->addKey('idx_event_type', ['event_type', 'created_at']);
    $this->forge->addKey('idx_site', ['site_id', 'created_at']);
    $this->forge->addKey('idx_created', 'created_at');
    $this->forge->addKey('idx_session', ['session_id', 'created_at']);
    $this->forge->createTable('security_audit_log', true);

    // Create error_audit_log table
    $this->forge->addField([
      'id' => ['type' => 'BIGINT', 'constraint' => 20, 'unsigned' => true, 'auto_increment' => true],
      'operation' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => false],
      'entity_type' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => false],
      'entity_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => false],
      'error_code' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => true],
      'error_message' => ['type' => 'TEXT', 'null' => true],
      'error_details' => ['type' => 'JSON', 'null' => true],
      'previous_value' => ['type' => 'JSON', 'null' => true],
      'new_value' => ['type' => 'JSON', 'null' => true],
      'mechanism' => ['type' => 'ENUM', 'constraint' => ['MANUAL', 'AUTOMATIC'], 'null' => false, 'default' => 'MANUAL'],
      'application_id' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => true],
      'web_page' => ['type' => 'VARCHAR', 'constraint' => 500, 'null' => true],
      'session_id' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'event_type' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'site_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => true],
      'workstation_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => true],
      'pc_name' => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
      'ip_address' => ['type' => 'VARCHAR', 'constraint' => 45, 'null' => true],
      'user_id' => ['type' => 'VARCHAR', 'constraint' => 36, 'null' => false],
      'created_at' => ['type' => 'DATETIME', 'null' => false],
      'reason' => ['type' => 'TEXT', 'null' => true],
      'context' => ['type' => 'JSON', 'null' => true]
    ]);
    $this->forge->addKey('id', true);
    $this->forge->addKey('idx_operation_created', ['operation', 'created_at']);
    $this->forge->addKey('idx_entity', ['entity_type', 'entity_id', 'created_at']);
    $this->forge->addKey('idx_error_code', ['error_code', 'created_at']);
    $this->forge->addKey('idx_event_type', ['event_type', 'created_at']);
    $this->forge->addKey('idx_user_created', ['user_id', 'created_at']);
    $this->forge->addKey('idx_site', ['site_id', 'created_at']);
    $this->forge->addKey('idx_created', 'created_at');
    $this->forge->createTable('error_audit_log', true);
  }

  public function down() {
    $this->forge->dropTable('error_audit_log');
    $this->forge->dropTable('security_audit_log');
    $this->forge->dropTable('service_audit_log');
    $this->forge->dropTable('data_audit_log');
  }
}