-- Helpdesk module: OAuth2 token cache (used only when OAuth2 auth mode is active)
CREATE TABLE IF NOT EXISTS `helpdesk_oauth_token_cache` (
    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
    `tenant_id` INT UNSIGNED NOT NULL,
    `access_token_encrypted` TEXT NOT NULL,
    `expires_at` DATETIME NOT NULL,
    `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (`id`),
    INDEX `idx_helpdesk_oauth_tenant` (`tenant_id`),
    INDEX `idx_helpdesk_oauth_expires` (`expires_at`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;