CREATE TABLE IF NOT EXISTS `employees` (
  `id` int NOT NULL AUTO_INCREMENT,
  `company_id` int NOT NULL,
  `name` varchar(255) NOT NULL,
  `designation` varchar(100) NOT NULL,
  `employee_type` enum('Permanent','Temporary','Contractual','Other') NOT NULL,
  `salary` decimal(15,2) DEFAULT '0.00',
  `joining_date` date DEFAULT NULL,
  `phone` varchar(20) NOT NULL,
  `address` text,
  `adhaar_no` varchar(20) DEFAULT NULL,
  `pan_no` varchar(20) DEFAULT NULL,
  `status` enum('active','inactive') DEFAULT 'active',
  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
  `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  KEY `company_id` (`company_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;

CREATE TABLE IF NOT EXISTS `salary_records` (
  `id` int NOT NULL AUTO_INCREMENT,
  `company_id` int NOT NULL,
  `employee_id` int NOT NULL,
  `month_year` varchar(20) NOT NULL,
  `amount` decimal(15,2) NOT NULL,
  `status` enum('unpaid','paid','partially_paid') DEFAULT 'unpaid',
  `record_date` date NOT NULL,
  `notes` text,
  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  KEY `company_id` (`company_id`),
  KEY `employee_id` (`employee_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;

CREATE TABLE IF NOT EXISTS `salary_payments` (
  `id` int NOT NULL AUTO_INCREMENT,
  `company_id` int NOT NULL,
  `employee_id` int NOT NULL,
  `amount` decimal(15,2) NOT NULL,
  `payment_date` date NOT NULL,
  `payment_mode` varchar(50) DEFAULT NULL,
  `reference_no` varchar(100) DEFAULT NULL,
  `notes` text,
  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  KEY `company_id` (`company_id`),
  KEY `employee_id` (`employee_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;