-- Amnezia VPN Panel - Complete Database Schema
-- Single migration file containing all tables and initial data

-- Users table
CREATE TABLE IF NOT EXISTS users (
  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  email VARCHAR(255) NOT NULL UNIQUE,
  password_hash VARCHAR(255) NOT NULL,
  name VARCHAR(255) NOT NULL,
  role ENUM('admin', 'user') DEFAULT 'user',
  preferred_language VARCHAR(10) DEFAULT 'en',
  status ENUM('active', 'disabled') DEFAULT 'active',
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  last_login_at TIMESTAMP NULL,
  INDEX idx_email (email),
  INDEX idx_role (role),
  INDEX idx_language (preferred_language)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- VPN Servers table
CREATE TABLE IF NOT EXISTS vpn_servers (
  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  user_id INT UNSIGNED NOT NULL,
  name VARCHAR(255) NOT NULL,
  host VARCHAR(255) NOT NULL,
  port INT UNSIGNED NOT NULL,
  username VARCHAR(255) NOT NULL,
  password VARCHAR(255) NOT NULL,
  container_name VARCHAR(255) DEFAULT 'amnezia-awg',
  vpn_port INT UNSIGNED NULL,
  vpn_subnet VARCHAR(50) DEFAULT '10.8.1.0/24',
  server_public_key TEXT NULL,
  preshared_key TEXT NULL,
  awg_params JSON NULL COMMENT 'Jc, Jmin, Jmax, S1, S2, H1-H4',
  status ENUM('deploying', 'active', 'stopped', 'error') DEFAULT 'deploying',
  deployed_at TIMESTAMP NULL,
  last_check_at TIMESTAMP NULL,
  error_message TEXT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  INDEX idx_user_id (user_id),
  INDEX idx_status (status),
  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- VPN Clients table
CREATE TABLE IF NOT EXISTS vpn_clients (
  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  server_id INT UNSIGNED NOT NULL,
  user_id INT UNSIGNED NOT NULL,
  name VARCHAR(255) NOT NULL,
  client_ip VARCHAR(50) NOT NULL,
  public_key TEXT NOT NULL,
  private_key TEXT NOT NULL,
  preshared_key TEXT NULL,
  config TEXT NULL COMMENT 'Full WireGuard config file',
  qr_code LONGTEXT NULL COMMENT 'Base64 encoded QR code image',
  bytes_sent BIGINT UNSIGNED DEFAULT 0 COMMENT 'Total bytes sent by client',
  bytes_received BIGINT UNSIGNED DEFAULT 0 COMMENT 'Total bytes received by client',
  last_handshake TIMESTAMP NULL COMMENT 'Last successful WireGuard handshake',
  last_sync_at TIMESTAMP NULL COMMENT 'Last time stats were synced from server',
  status ENUM('active', 'disabled') DEFAULT 'active',
  expires_at TIMESTAMP NULL COMMENT 'Client expiration date (NULL = never expires)',
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  INDEX idx_server_id (server_id),
  INDEX idx_user_id (user_id),
  INDEX idx_status (status),
  INDEX idx_expires_at (expires_at),
  INDEX idx_last_handshake (last_handshake),
  UNIQUE KEY unique_server_client_ip (server_id, client_ip),
  FOREIGN KEY (server_id) REFERENCES vpn_servers(id) ON DELETE CASCADE,
  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- API Tokens table
CREATE TABLE IF NOT EXISTS api_tokens (
  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  user_id INT UNSIGNED NOT NULL,
  token VARCHAR(255) NOT NULL UNIQUE,
  name VARCHAR(255) NOT NULL,
  last_used_at TIMESTAMP NULL,
  expires_at TIMESTAMP NULL,
  revoked_at TIMESTAMP NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  INDEX idx_token (token),
  INDEX idx_user_id (user_id),
  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Settings table
CREATE TABLE IF NOT EXISTS settings (
  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  user_id INT UNSIGNED NULL COMMENT 'NULL for global settings',
  namespace VARCHAR(100) NOT NULL,
  `key` VARCHAR(100) NOT NULL,
  value JSON NOT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  UNIQUE KEY unique_setting (user_id, namespace, `key`),
  INDEX idx_namespace (namespace)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Languages table
CREATE TABLE IF NOT EXISTS languages (
  id INT AUTO_INCREMENT PRIMARY KEY,
  code VARCHAR(10) NOT NULL UNIQUE COMMENT 'Language code (en, ru, es, de, fr, zh)',
  name VARCHAR(50) NOT NULL COMMENT 'Language name in English',
  native_name VARCHAR(50) NOT NULL COMMENT 'Language name in native language',
  is_active TINYINT(1) DEFAULT 1,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  INDEX idx_code (code),
  INDEX idx_active (is_active)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Translations table
CREATE TABLE IF NOT EXISTS translations (
  id INT AUTO_INCREMENT PRIMARY KEY,
  language_code VARCHAR(10) NOT NULL,
  translation_key VARCHAR(255) NOT NULL COMMENT 'Translation key (e.g., menu.dashboard)',
  translation_value TEXT NOT NULL COMMENT 'Translated text',
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  UNIQUE KEY unique_translation (language_code, translation_key),
  FOREIGN KEY (language_code) REFERENCES languages(code) ON DELETE CASCADE,
  INDEX idx_key (translation_key),
  INDEX idx_language (language_code)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- API Keys table
CREATE TABLE IF NOT EXISTS api_keys (
  id INT AUTO_INCREMENT PRIMARY KEY,
  service_name VARCHAR(50) NOT NULL UNIQUE COMMENT 'Service name (e.g., openrouter)',
  api_key TEXT NOT NULL COMMENT 'API key value',
  is_active TINYINT(1) DEFAULT 1,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  INDEX idx_service (service_name),
  INDEX idx_active (is_active)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Server Backups table
CREATE TABLE IF NOT EXISTS server_backups (
  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  server_id INT UNSIGNED NOT NULL,
  backup_name VARCHAR(255) NOT NULL COMMENT 'Backup file name',
  backup_path VARCHAR(500) NOT NULL COMMENT 'Path to backup file',
  backup_size BIGINT UNSIGNED DEFAULT 0 COMMENT 'Backup file size in bytes',
  clients_count INT UNSIGNED DEFAULT 0 COMMENT 'Number of clients in backup',
  backup_type ENUM('manual', 'automatic') DEFAULT 'manual',
  status ENUM('creating', 'completed', 'failed') DEFAULT 'creating',
  error_message TEXT NULL COMMENT 'Error message if backup failed',
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  created_by INT UNSIGNED NULL COMMENT 'User who created the backup',
  INDEX idx_server_id (server_id),
  INDEX idx_status (status),
  INDEX idx_created_at (created_at),
  FOREIGN KEY (server_id) REFERENCES vpn_servers(id) ON DELETE CASCADE,
  FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Insert default admin user
INSERT IGNORE INTO users (email, password_hash, name, role, status) 
VALUES ('admin@amnez.ia', '$2y$10$SKEI6ogiWr2gsSG/nELLp.JcfpGhxsDLAAI7gdtTOI3ELz4zJzzPG', 'Administrator', 'admin', 'active');

-- Insert supported languages
INSERT INTO languages (code, name, native_name) VALUES
('en', 'English', 'English'),
('ru', 'Russian', 'Русский'),
('es', 'Spanish', 'Español'),
('de', 'German', 'Deutsch'),
('fr', 'French', 'Français'),
('zh', 'Chinese', '中文')
ON DUPLICATE KEY UPDATE name=VALUES(name);

-- Insert English translations
INSERT INTO translations (language_code, translation_key, translation_value) VALUES
('en', 'auth.email', 'Email'),
('en', 'auth.login', 'Login'),
('en', 'auth.name', 'Name'),
('en', 'auth.password', 'Password'),
('en', 'auth.register', 'Register'),
('en', 'clients.actions', 'Actions'),
('en', 'clients.add', 'Add Client'),
('en', 'clients.create', 'Create Client'),
('en', 'clients.delete', 'Delete'),
('en', 'clients.delete_confirm', 'Delete this client permanently?'),
('en', 'clients.download_config', 'Download Config'),
('en', 'clients.expiration', 'Expiration'),
('en', 'clients.expired', 'Expired'),
('en', 'clients.never', 'Never'),
('en', 'clients.never_expires', 'Never expires'),
('en', 'clients.no_clients', 'No clients yet'),
('en', 'clients.ip', 'IP Address'),
('en', 'clients.last_handshake', 'Last Handshake'),
('en', 'clients.name', 'Client Name'),
('en', 'clients.qr_code', 'QR Code'),
('en', 'clients.received', 'Received'),
('en', 'clients.restore', 'Restore'),
('en', 'clients.revoke', 'Revoke'),
('en', 'clients.revoke_confirm', 'Revoke access for this client?'),
('en', 'clients.sent', 'Sent'),
('en', 'clients.server', 'Server'),
('en', 'clients.status', 'Status'),
('en', 'clients.sync_stats', 'Sync Stats'),
('en', 'clients.title', 'Clients'),
('en', 'clients.traffic', 'Traffic'),
('en', 'clients.traffic_limit', 'Traffic Limit'),
('en', 'clients.unlimited', 'Unlimited'),
('en', 'clients.overlimit', 'Over Limit'),
('en', 'clients.custom_seconds', 'Custom (seconds)'),
('en', 'clients.custom_mb', 'Custom (MB)'),
('en', 'clients.enter_seconds', 'Enter seconds'),
('en', 'clients.enter_megabytes', 'Enter megabytes'),
('en', 'backups.title', 'Server Backups'),
('en', 'backups.create', 'Create Backup'),
('en', 'backups.restore', 'Restore'),
('en', 'backups.no_backups', 'No backups yet'),
('en', 'backups.create_confirm', 'Create backup of all clients on this server?'),
('en', 'backups.restore_confirm', 'Restore clients from this backup? Existing clients will not be affected.'),
('en', 'backups.delete_confirm', 'Delete this backup permanently?'),
('en', 'backups.created_success', 'Backup created successfully'),
('en', 'backups.restored_success', 'Restored'),
('en', 'backups.deleted_success', 'Backup deleted successfully'),
('en', 'backups.login_required', 'Please login via API to manage backups'),
('en', 'common.days', 'days'),
('en', 'dashboard.active_clients', 'Active Clients'),
('en', 'dashboard.add_first_server', 'Add First Server'),
('en', 'dashboard.get_started', 'Get started by adding your first VPN server'),
('en', 'dashboard.no_servers', 'No servers yet'),
('en', 'dashboard.quick_actions', 'Quick Actions'),
('en', 'dashboard.recent_servers', 'Recent Servers'),
('en', 'dashboard.title', 'Dashboard'),
('en', 'dashboard.total_clients', 'Total Clients'),
('en', 'dashboard.total_servers', 'Total Servers'),
('en', 'dashboard.total_traffic', 'Total Traffic'),
('en', 'dashboard.welcome', 'Welcome to Amnezia VPN Management Panel'),
('en', 'form.cancel', 'Cancel'),
('en', 'form.close', 'Close'),
('en', 'form.create', 'Create'),
('en', 'form.loading', 'Loading...'),
('en', 'form.processing', 'Processing...'),
('en', 'form.save', 'Save'),
('en', 'form.submit', 'Submit'),
('en', 'form.update', 'Update'),
('en', 'menu.clients', 'Clients'),
('en', 'menu.dashboard', 'Dashboard'),
('en', 'menu.logout', 'Logout'),
('en', 'menu.servers', 'Servers'),
('en', 'menu.settings', 'Settings'),
('en', 'menu.users', 'Users'),
('en', 'message.confirm', 'Are you sure?'),
('en', 'message.deleted', 'Deleted successfully'),
('en', 'message.deployed', 'Deployed successfully'),
('en', 'message.error', 'An error occurred'),
('en', 'message.saved', 'Saved successfully'),
('en', 'message.success', 'Operation completed successfully'),
('en', 'servers.actions', 'Actions'),
('en', 'servers.add', 'Add Server'),
('en', 'servers.clients', 'Clients'),
('en', 'servers.delete', 'Delete'),
('en', 'servers.deploy', 'Deploy'),
('en', 'servers.edit', 'Edit'),
('en', 'servers.host', 'Host'),
('en', 'servers.name', 'Name'),
('en', 'servers.port', 'Port'),
('en', 'servers.status', 'Status'),
('en', 'servers.title', 'Servers'),
('en', 'servers.view', 'View'),
('en', 'settings.actions', 'Actions'),
('en', 'settings.api_keys', 'API Keys'),
('en', 'settings.api_keys_desc', 'Configure API keys for external services'),
('en', 'settings.auto_translate', 'Auto-translate'),
('en', 'settings.change_password', 'Change Password'),
('en', 'settings.confirm_password', 'Confirm Password'),
('en', 'settings.confirm_translate', 'Start automatic translation? This may take a few minutes.'),
('en', 'settings.current_password', 'Current Password'),
('en', 'settings.description', 'Manage panel configuration and API integrations'),
('en', 'settings.error_empty_key', 'API key cannot be empty'),
('en', 'settings.error_invalid_key', 'Invalid API key format'),
('en', 'settings.error_key_test', 'API key test failed'),
('en', 'settings.for_translation', 'for auto-translation'),
('en', 'settings.get_key_at', 'Get your API key at'),
('en', 'settings.key_saved', 'API key saved successfully'),
('en', 'settings.keys', 'keys'),
('en', 'settings.language', 'Language'),
('en', 'settings.min_6_chars', 'Minimum 6 characters'),
('en', 'settings.new_password', 'New Password'),
('en', 'settings.profile', 'Profile'),
('en', 'settings.progress', 'Progress'),
('en', 'settings.translations', 'Translations'),
('en', 'settings.translation_complete', 'Translation completed'),
('en', 'settings.translation_status', 'Translation Status'),
('en', 'settings.users', 'Users'),
('en', 'status.active', 'Active'),
('en', 'status.deploying', 'Deploying'),
('en', 'status.disabled', 'Disabled'),
('en', 'status.error', 'Error'),
('en', 'status.inactive', 'Inactive'),
('en', 'users.add_user', 'Add User'),
('en', 'users.all_users', 'All Users'),
('en', 'users.administrator', 'Administrator'),
('en', 'users.created', 'Created'),
('en', 'users.delete_confirm', 'Delete {0}?'),
('en', 'users.role', 'Role'),
('en', 'users.role_admin', 'Admin'),
('en', 'users.role_user', 'User'),
('en', 'settings.api_key_configured', 'API Key Configured'),
('en', 'settings.no_api_key', 'No API key configured. Auto-translation will not work.'),
('en', 'settings.skip_validation', 'Skip validation (save without testing)')
ON DUPLICATE KEY UPDATE translation_value=VALUES(translation_value);
