CREATE DATABASE  IF NOT EXISTS `candidb_main` /*!40100 DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci */ /*!80016 DEFAULT ENCRYPTION='N' */;
USE `candidb_main`;
-- MySQL dump 10.13  Distrib 8.0.38, for Win64 (x86_64)
--
-- Host: localhost    Database: candidb_main
-- ------------------------------------------------------
-- Server version	8.0.39

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!50503 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Dumping events for database 'candidb_main'
--

--
-- Dumping routines for database 'candidb_main'
--
/*!50003 DROP FUNCTION IF EXISTS `can_create_job` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` FUNCTION `can_create_job`(user_uuid VARCHAR(36)) RETURNS tinyint(1)
    READS SQL DATA
    DETERMINISTIC
BEGIN
    DECLARE current_jobs INT DEFAULT 0;
    DECLARE max_jobs INT DEFAULT 100; -- Hard limit of 100 jobs
    
    -- Get current job count
    SELECT COALESCE(jobs_created, 0) INTO current_jobs
    FROM user_usage 
    WHERE user_id = user_uuid;
    
    -- Return TRUE if under limit
    RETURN current_jobs < max_jobs;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP FUNCTION IF EXISTS `get_all_users` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` FUNCTION `get_all_users`() RETURNS json
    READS SQL DATA
    DETERMINISTIC
BEGIN
    DECLARE result JSON;
    
    SELECT JSON_ARRAYAGG(
        JSON_OBJECT(
            'id', id,
            'email', email,
            'first_name', first_name,
            'last_name', last_name,
            'role', role,
            'company_name', company_name,
            'is_active', is_active,
            'last_login_at', last_login_at,
            'email_verified_at', email_verified_at,
            'created_at', created_at
        )
    ) INTO result
    FROM users 
    WHERE deleted_at IS NULL
    ORDER BY created_at DESC;
    
    RETURN result;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP FUNCTION IF EXISTS `get_token_usage_summary` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` FUNCTION `get_token_usage_summary`(user_uuid VARCHAR(36)) RETURNS json
    READS SQL DATA
    DETERMINISTIC
BEGIN
    DECLARE total_purchased INT DEFAULT 0;
    DECLARE total_used INT DEFAULT 0;
    DECLARE total_available INT DEFAULT 0;
    DECLARE result JSON;
    
    -- Get total purchased tokens
    SELECT COALESCE(SUM(quantity), 0) INTO total_purchased
    FROM interview_tokens 
    WHERE user_id = user_uuid;
    
    -- Get total used tokens
    SELECT COALESCE(SUM(tokens_used), 0) INTO total_used
    FROM interview_tokens 
    WHERE user_id = user_uuid;
    
    -- Get total available tokens
    SELECT COALESCE(SUM(tokens_remaining), 0) INTO total_available
    FROM interview_tokens 
    WHERE user_id = user_uuid 
    AND status = 'active'
    AND (expires_at IS NULL OR expires_at > NOW());
    
    -- Build JSON result
    SET result = JSON_OBJECT(
        'total_purchased', total_purchased,
        'total_used', total_used,
        'total_available', total_available,
        'utilization_percentage', CASE 
            WHEN total_purchased > 0 THEN ROUND((total_used / total_purchased) * 100, 2)
            ELSE 0 
        END
    );
    
    RETURN result;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP FUNCTION IF EXISTS `get_user_statistics` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` FUNCTION `get_user_statistics`(user_uuid VARCHAR(36)) RETURNS json
    READS SQL DATA
    DETERMINISTIC
BEGIN
    DECLARE result JSON;
    DECLARE user_usage_data JSON;
    DECLARE token_summary JSON;
    
    -- Get usage data
    SELECT JSON_OBJECT(
        'jobs_created', COALESCE(jobs_created, 0),
        'interviews_completed', COALESCE(interviews_completed, 0),
        'tokens_purchased', COALESCE(tokens_purchased, 0),
        'tokens_used', COALESCE(tokens_used, 0)
    ) INTO user_usage_data
    FROM user_usage 
    WHERE user_id = user_uuid;
    
    -- Get token summary
    SELECT get_token_usage_summary(user_uuid) INTO token_summary;
    
    -- Build result
    SET result = JSON_OBJECT(
        'usage', user_usage_data,
        'tokens', token_summary
    );
    
    RETURN result;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP FUNCTION IF EXISTS `has_available_tokens` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` FUNCTION `has_available_tokens`(user_uuid VARCHAR(36)) RETURNS tinyint(1)
    READS SQL DATA
    DETERMINISTIC
BEGIN
    DECLARE available_tokens INT DEFAULT 0;
    
    -- Get available tokens (active and not expired)
    SELECT COALESCE(SUM(tokens_remaining), 0) INTO available_tokens
    FROM interview_tokens 
    WHERE user_id = user_uuid 
    AND status = 'active'
    AND (expires_at IS NULL OR expires_at > NOW());
    
    -- Return TRUE if has available tokens
    RETURN available_tokens > 0;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP FUNCTION IF EXISTS `is_admin` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` FUNCTION `is_admin`(user_uuid VARCHAR(36)) RETURNS tinyint(1)
    READS SQL DATA
    DETERMINISTIC
BEGIN
    DECLARE user_role VARCHAR(20) DEFAULT NULL;
    
    SELECT role INTO user_role
    FROM users 
    WHERE id = user_uuid AND is_active = TRUE;
    
    RETURN user_role = 'admin';
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `add_tokens_to_user` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` PROCEDURE `add_tokens_to_user`(
    IN p_user_id VARCHAR(36),
    IN p_quantity INT,
    IN p_price_per_token DECIMAL(10,2),
    IN p_admin_id VARCHAR(36),
    OUT p_success BOOLEAN,
    OUT p_message VARCHAR(255)
)
BEGIN
    DECLARE v_total_price DECIMAL(10,2);
    DECLARE v_token_id VARCHAR(36);
    
    DECLARE EXIT HANDLER FOR SQLEXCEPTION
    BEGIN
        ROLLBACK;
        SET p_success = FALSE;
        SET p_message = 'An error occurred while adding tokens';
    END;
    
    -- Check if admin
    IF NOT is_admin(p_admin_id) THEN
        SET p_success = FALSE;
        SET p_message = 'Access denied: Admin privileges required';
    ELSE
        -- Check if user exists
        IF NOT EXISTS (SELECT 1 FROM users WHERE id = p_user_id AND deleted_at IS NULL) THEN
            SET p_success = FALSE;
            SET p_message = 'User not found';
        ELSE
            -- Calculate total price
            SET v_total_price = p_quantity * p_price_per_token;
            
            -- Create token record
            SET v_token_id = UUID();
            
            INSERT INTO interview_tokens (
                id, user_id, token_type, quantity, price_per_token, 
                total_price, status, purchased_at
            ) VALUES (
                v_token_id, p_user_id, 
                CASE WHEN p_quantity = 1 THEN 'single' ELSE 'bulk' END,
                p_quantity, p_price_per_token, v_total_price, 
                'active', NOW()
            );
            
            -- Create payment record (admin-granted)
            INSERT INTO payment_records (
                user_id, interview_token_id, token_package_id, 
                amount, status, payment_method, payment_reference
            ) VALUES (
                p_user_id, v_token_id, NULL, v_total_price, 
                'paid', 'admin_granted', CONCAT('ADMIN_', p_admin_id, '_', NOW())
            );
            
            SET p_success = TRUE;
            SET p_message = CONCAT('Successfully added ', p_quantity, ' tokens to user');
        END IF;
    END IF;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `change_user_password` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` PROCEDURE `change_user_password`(
    IN p_user_id VARCHAR(36),
    IN p_new_password_hash VARCHAR(255),
    IN p_admin_id VARCHAR(36),
    OUT p_success BOOLEAN,
    OUT p_message VARCHAR(255)
)
BEGIN
    DECLARE EXIT HANDLER FOR SQLEXCEPTION
    BEGIN
        ROLLBACK;
        SET p_success = FALSE;
        SET p_message = 'An error occurred while changing password';
    END;
    
    -- Check if admin
    IF NOT is_admin(p_admin_id) THEN
        SET p_success = FALSE;
        SET p_message = 'Access denied: Admin privileges required';
    ELSE
        -- Check if user exists
        IF NOT EXISTS (SELECT 1 FROM users WHERE id = p_user_id AND deleted_at IS NULL) THEN
            SET p_success = FALSE;
            SET p_message = 'User not found';
        ELSE
            -- Update password
            UPDATE users SET
                password_hash = p_new_password_hash,
                updated_at = NOW()
            WHERE id = p_user_id;
            
            SET p_success = TRUE;
            SET p_message = 'Password changed successfully';
        END IF;
    END IF;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `create_user` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` PROCEDURE `create_user`(
    IN p_email VARCHAR(255),
    IN p_password_hash VARCHAR(255),
    IN p_first_name VARCHAR(100),
    IN p_last_name VARCHAR(100),
    IN p_role ENUM('admin', 'recruiter'),
    IN p_company_name VARCHAR(255),
    IN p_admin_id VARCHAR(36),
    OUT p_user_id VARCHAR(36),
    OUT p_success BOOLEAN,
    OUT p_message VARCHAR(255)
)
BEGIN
    DECLARE EXIT HANDLER FOR SQLEXCEPTION
    BEGIN
        ROLLBACK;
        SET p_success = FALSE;
        SET p_message = 'An error occurred while creating user';
    END;
    
    -- Check if admin
    IF NOT is_admin(p_admin_id) THEN
        SET p_success = FALSE;
        SET p_message = 'Access denied: Admin privileges required';
    ELSE
        -- Check if email already exists
        IF EXISTS (SELECT 1 FROM users WHERE email = p_email AND deleted_at IS NULL) THEN
            SET p_success = FALSE;
            SET p_message = 'Email already exists';
        ELSE
            -- Create user
            SET p_user_id = UUID();
            
            INSERT INTO users (
                id, email, password_hash, first_name, last_name, 
                role, company_name, is_active, email_verified_at
            ) VALUES (
                p_user_id, p_email, p_password_hash, p_first_name, p_last_name,
                p_role, p_company_name, TRUE, NOW()
            );
            
            -- Initialize usage tracking
            INSERT INTO user_usage (user_id) VALUES (p_user_id);
            
            SET p_success = TRUE;
            SET p_message = 'User created successfully';
        END IF;
    END IF;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `deactivate_user` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` PROCEDURE `deactivate_user`(
    IN p_user_id VARCHAR(36),
    IN p_admin_id VARCHAR(36),
    OUT p_success BOOLEAN,
    OUT p_message VARCHAR(255)
)
BEGIN
    DECLARE EXIT HANDLER FOR SQLEXCEPTION
    BEGIN
        ROLLBACK;
        SET p_success = FALSE;
        SET p_message = 'An error occurred while deactivating user';
    END;
    
    -- Check if admin
    IF NOT is_admin(p_admin_id) THEN
        SET p_success = FALSE;
        SET p_message = 'Access denied: Admin privileges required';
    ELSE
        -- Check if user exists
        IF NOT EXISTS (SELECT 1 FROM users WHERE id = p_user_id AND deleted_at IS NULL) THEN
            SET p_success = FALSE;
            SET p_message = 'User not found';
        ELSE
            -- Deactivate user
            UPDATE users SET
                is_active = FALSE,
                updated_at = NOW()
            WHERE id = p_user_id;
            
            SET p_success = TRUE;
            SET p_message = 'User deactivated successfully';
        END IF;
    END IF;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `get_system_statistics` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` PROCEDURE `get_system_statistics`(
    IN p_admin_id VARCHAR(36),
    OUT p_success BOOLEAN,
    OUT p_message VARCHAR(255),
    OUT p_statistics JSON
)
BEGIN
    DECLARE v_total_users INT DEFAULT 0;
    DECLARE v_active_users INT DEFAULT 0;
    DECLARE v_total_jobs INT DEFAULT 0;
    DECLARE v_total_interviews INT DEFAULT 0;
    DECLARE v_total_tokens_purchased INT DEFAULT 0;
    DECLARE v_total_tokens_used INT DEFAULT 0;
    DECLARE v_total_revenue DECIMAL(10,2) DEFAULT 0;
    
    DECLARE EXIT HANDLER FOR SQLEXCEPTION
    BEGIN
        ROLLBACK;
        SET p_success = FALSE;
        SET p_message = 'An error occurred while getting statistics';
    END;
    
    -- Check if admin
    IF NOT is_admin(p_admin_id) THEN
        SET p_success = FALSE;
        SET p_message = 'Access denied: Admin privileges required';
    ELSE
        -- Get statistics
        SELECT COUNT(*) INTO v_total_users FROM users WHERE deleted_at IS NULL;
        SELECT COUNT(*) INTO v_active_users FROM users WHERE is_active = TRUE AND deleted_at IS NULL;
        SELECT COALESCE(SUM(jobs_created), 0) INTO v_total_jobs FROM user_usage;
        SELECT COALESCE(SUM(interviews_completed), 0) INTO v_total_interviews FROM user_usage;
        SELECT COALESCE(SUM(tokens_purchased), 0) INTO v_total_tokens_purchased FROM user_usage;
        SELECT COALESCE(SUM(tokens_used), 0) INTO v_total_tokens_used FROM user_usage;
        SELECT COALESCE(SUM(amount), 0) INTO v_total_revenue FROM payment_records WHERE status = 'paid';
        
        -- Build statistics JSON
        SET p_statistics = JSON_OBJECT(
            'total_users', v_total_users,
            'active_users', v_active_users,
            'total_jobs', v_total_jobs,
            'total_interviews', v_total_interviews,
            'total_tokens_purchased', v_total_tokens_purchased,
            'total_tokens_used', v_total_tokens_used,
            'total_revenue', v_total_revenue,
            'generated_at', NOW()
        );
        
        SET p_success = TRUE;
        SET p_message = 'Statistics retrieved successfully';
    END IF;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `update_user` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_0900_ai_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`localhost` PROCEDURE `update_user`(
    IN p_user_id VARCHAR(36),
    IN p_email VARCHAR(255),
    IN p_first_name VARCHAR(100),
    IN p_last_name VARCHAR(100),
    IN p_role ENUM('admin', 'recruiter'),
    IN p_company_name VARCHAR(255),
    IN p_is_active BOOLEAN,
    IN p_admin_id VARCHAR(36),
    OUT p_success BOOLEAN,
    OUT p_message VARCHAR(255)
)
BEGIN
    DECLARE EXIT HANDLER FOR SQLEXCEPTION
    BEGIN
        ROLLBACK;
        SET p_success = FALSE;
        SET p_message = 'An error occurred while updating user';
    END;
    
    -- Check if admin
    IF NOT is_admin(p_admin_id) THEN
        SET p_success = FALSE;
        SET p_message = 'Access denied: Admin privileges required';
    ELSE
        -- Check if user exists
        IF NOT EXISTS (SELECT 1 FROM users WHERE id = p_user_id AND deleted_at IS NULL) THEN
            SET p_success = FALSE;
            SET p_message = 'User not found';
        ELSE
            -- Update user
            UPDATE users SET
                email = p_email,
                first_name = p_first_name,
                last_name = p_last_name,
                role = p_role,
                company_name = p_company_name,
                is_active = p_is_active,
                updated_at = NOW()
            WHERE id = p_user_id;
            
            SET p_success = TRUE;
            SET p_message = 'User updated successfully';
        END IF;
    END IF;
END ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on 2025-09-16 20:22:32