Sindbad~EG File Manager

-- Chat System Database Schema

-- User online status tracking
CREATE TABLE IF NOT EXISTS `user_online_status` (
    `user_id` INT PRIMARY KEY,
    `is_online` TINYINT(1) DEFAULT 0,
    `last_seen` DATETIME DEFAULT CURRENT_TIMESTAMP,
    `socket_id` VARCHAR(100) NULL,
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Chat groups
CREATE TABLE IF NOT EXISTS `chat_groups` (
    `id` INT AUTO_INCREMENT PRIMARY KEY,
    `name` VARCHAR(100) NOT NULL,
    `description` TEXT NULL,
    `icon` VARCHAR(50) DEFAULT 'fa-users',
    `created_by` INT NOT NULL,
    `is_active` TINYINT(1) DEFAULT 1,
    `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
    `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Group members
CREATE TABLE IF NOT EXISTS `chat_group_members` (
    `id` INT AUTO_INCREMENT PRIMARY KEY,
    `group_id` INT NOT NULL,
    `user_id` INT NOT NULL,
    `role` ENUM('admin', 'member') DEFAULT 'member',
    `joined_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
    `is_banned` TINYINT(1) DEFAULT 0,
    `banned_by` INT NULL,
    `banned_at` DATETIME NULL,
    `ban_reason` VARCHAR(255) NULL,
    UNIQUE KEY `unique_group_member` (`group_id`, `user_id`),
    FOREIGN KEY (`group_id`) REFERENCES `chat_groups`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`banned_by`) REFERENCES `users`(`id`) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Direct messages between users
CREATE TABLE IF NOT EXISTS `chat_direct_messages` (
    `id` INT AUTO_INCREMENT PRIMARY KEY,
    `sender_id` INT NOT NULL,
    `receiver_id` INT NOT NULL,
    `message` TEXT NOT NULL,
    `is_read` TINYINT(1) DEFAULT 0,
    `read_at` DATETIME NULL,
    `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (`sender_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`receiver_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    INDEX `idx_sender_receiver` (`sender_id`, `receiver_id`),
    INDEX `idx_receiver_unread` (`receiver_id`, `is_read`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Group messages
CREATE TABLE IF NOT EXISTS `chat_group_messages` (
    `id` INT AUTO_INCREMENT PRIMARY KEY,
    `group_id` INT NOT NULL,
    `sender_id` INT NOT NULL,
    `message` TEXT NOT NULL,
    `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (`group_id`) REFERENCES `chat_groups`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`sender_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    INDEX `idx_group_messages` (`group_id`, `created_at`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Message read status for group messages
CREATE TABLE IF NOT EXISTS `chat_group_message_reads` (
    `id` INT AUTO_INCREMENT PRIMARY KEY,
    `message_id` INT NOT NULL,
    `user_id` INT NOT NULL,
    `read_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY `unique_message_read` (`message_id`, `user_id`),
    FOREIGN KEY (`message_id`) REFERENCES `chat_group_messages`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- User bans (global chat bans by admin)
CREATE TABLE IF NOT EXISTS `chat_user_bans` (
    `id` INT AUTO_INCREMENT PRIMARY KEY,
    `user_id` INT NOT NULL,
    `banned_by` INT NOT NULL,
    `reason` VARCHAR(255) NULL,
    `banned_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
    `expires_at` DATETIME NULL,
    `is_active` TINYINT(1) DEFAULT 1,
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`banned_by`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    INDEX `idx_active_bans` (`user_id`, `is_active`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Create default General group
INSERT INTO `chat_groups` (`name`, `description`, `icon`, `created_by`) 
SELECT 'General', 'General discussion for all users', 'fa-comments', id 
FROM `users` WHERE `user_level` = 'superuser' LIMIT 1;