-- CreateTable
CREATE TABLE `companies` (
    `id` VARCHAR(36) NOT NULL,
    `name` VARCHAR(255) NOT NULL,
    `slug` VARCHAR(100) NOT NULL,
    `domain` VARCHAR(255) NOT NULL,
    `logo_url` VARCHAR(500) NULL,
    `is_active` BOOLEAN NOT NULL DEFAULT true,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `companies_slug_key`(`slug`),
    UNIQUE INDEX `companies_domain_key`(`domain`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `departments` (
    `id` VARCHAR(36) NOT NULL,
    `company_id` VARCHAR(36) NOT NULL,
    `name` VARCHAR(255) NOT NULL,
    `is_active` BOOLEAN NOT NULL DEFAULT true,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    INDEX `departments_company_id_idx`(`company_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `users` (
    `id` VARCHAR(36) NOT NULL,
    `company_id` VARCHAR(36) NOT NULL,
    `department_id` VARCHAR(36) NULL,
    `email` VARCHAR(255) NOT NULL,
    `first_name` VARCHAR(100) NOT NULL,
    `last_name` VARCHAR(100) NOT NULL,
    `phone` VARCHAR(20) NULL,
    `role` ENUM('admin', 'agent', 'user') NOT NULL DEFAULT 'user',
    `status` ENUM('active', 'inactive') NOT NULL DEFAULT 'active',
    `avatar_url` VARCHAR(500) NULL,
    `last_login_at` DATETIME(3) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `users_email_key`(`email`),
    INDEX `users_company_id_idx`(`company_id`),
    INDEX `users_department_id_idx`(`department_id`),
    INDEX `users_role_idx`(`role`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `magic_links` (
    `id` VARCHAR(36) NOT NULL,
    `user_id` VARCHAR(36) NOT NULL,
    `token` VARCHAR(255) NOT NULL,
    `expires_at` DATETIME(3) NOT NULL,
    `used_at` DATETIME(3) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    UNIQUE INDEX `magic_links_token_key`(`token`),
    INDEX `magic_links_token_idx`(`token`),
    INDEX `magic_links_expires_at_idx`(`expires_at`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `sessions` (
    `id` VARCHAR(36) NOT NULL,
    `user_id` VARCHAR(36) NOT NULL,
    `token` VARCHAR(255) NOT NULL,
    `expires_at` DATETIME(3) NOT NULL,
    `ip_address` VARCHAR(45) NULL,
    `user_agent` VARCHAR(500) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    UNIQUE INDEX `sessions_token_key`(`token`),
    INDEX `sessions_token_idx`(`token`),
    INDEX `sessions_user_id_idx`(`user_id`),
    INDEX `sessions_expires_at_idx`(`expires_at`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `categories` (
    `id` VARCHAR(36) NOT NULL,
    `name` VARCHAR(255) NOT NULL,
    `slug` VARCHAR(100) NOT NULL,
    `description` TEXT NULL,
    `icon` VARCHAR(50) NULL,
    `sort_order` INTEGER NOT NULL DEFAULT 0,
    `is_active` BOOLEAN NOT NULL DEFAULT true,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `categories_slug_key`(`slug`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `agent_categories` (
    `id` VARCHAR(36) NOT NULL,
    `user_id` VARCHAR(36) NOT NULL,
    `category_id` VARCHAR(36) NOT NULL,

    UNIQUE INDEX `agent_categories_user_id_category_id_key`(`user_id`, `category_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `sla_policies` (
    `id` VARCHAR(36) NOT NULL,
    `priority` ENUM('critical', 'high', 'medium', 'low') NOT NULL,
    `first_response_min` INTEGER NOT NULL,
    `resolution_min` INTEGER NOT NULL,
    `warning_pct` INTEGER NOT NULL DEFAULT 75,
    `is_active` BOOLEAN NOT NULL DEFAULT true,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `sla_policies_priority_key`(`priority`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `business_hours` (
    `id` VARCHAR(36) NOT NULL,
    `department_id` VARCHAR(36) NULL,
    `day_of_week` INTEGER NOT NULL,
    `start_time` VARCHAR(5) NOT NULL,
    `end_time` VARCHAR(5) NOT NULL,
    `is_active` BOOLEAN NOT NULL DEFAULT true,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `business_hours_department_id_day_of_week_key`(`department_id`, `day_of_week`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `holidays` (
    `id` VARCHAR(36) NOT NULL,
    `name` VARCHAR(255) NOT NULL,
    `date` DATE NOT NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    UNIQUE INDEX `holidays_date_key`(`date`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `tickets` (
    `id` VARCHAR(36) NOT NULL,
    `folio` VARCHAR(20) NOT NULL,
    `company_id` VARCHAR(36) NOT NULL,
    `category_id` VARCHAR(36) NOT NULL,
    `creator_id` VARCHAR(36) NOT NULL,
    `assignee_id` VARCHAR(36) NULL,
    `status` ENUM('new', 'assigned', 'in_progress', 'waiting_on_user', 'waiting_on_third_party', 'resolved', 'closed', 'reopened', 'cancelled') NOT NULL DEFAULT 'new',
    `priority` ENUM('critical', 'high', 'medium', 'low') NOT NULL DEFAULT 'medium',
    `channel` ENUM('web', 'email', 'whatsapp') NOT NULL DEFAULT 'web',
    `subject` VARCHAR(500) NOT NULL,
    `description` TEXT NOT NULL,
    `sla_first_response_due` DATETIME(3) NULL,
    `sla_resolution_due` DATETIME(3) NULL,
    `sla_first_responded_at` DATETIME(3) NULL,
    `sla_resolved_at` DATETIME(3) NULL,
    `sla_paused_at` DATETIME(3) NULL,
    `sla_paused_minutes` INTEGER NOT NULL DEFAULT 0,
    `sla_breached` BOOLEAN NOT NULL DEFAULT false,
    `sla_breach_justification` TEXT NULL,
    `sla_warning_notified` BOOLEAN NOT NULL DEFAULT false,
    `sla_breach_notified` BOOLEAN NOT NULL DEFAULT false,
    `reopen_count` INTEGER NOT NULL DEFAULT 0,
    `last_reopened_at` DATETIME(3) NULL,
    `resolved_at` DATETIME(3) NULL,
    `closed_at` DATETIME(3) NULL,
    `cancelled_at` DATETIME(3) NULL,
    `auto_close_at` DATETIME(3) NULL,
    `csat_token` VARCHAR(36) NULL,
    `csat_sent_at` DATETIME(3) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `tickets_folio_key`(`folio`),
    UNIQUE INDEX `tickets_csat_token_key`(`csat_token`),
    INDEX `tickets_company_id_idx`(`company_id`),
    INDEX `tickets_category_id_idx`(`category_id`),
    INDEX `tickets_creator_id_idx`(`creator_id`),
    INDEX `tickets_assignee_id_idx`(`assignee_id`),
    INDEX `tickets_status_idx`(`status`),
    INDEX `tickets_priority_idx`(`priority`),
    INDEX `tickets_sla_breached_idx`(`sla_breached`),
    INDEX `tickets_auto_close_at_idx`(`auto_close_at`),
    INDEX `tickets_created_at_idx`(`created_at`),
    FULLTEXT INDEX `tickets_subject_description_idx`(`subject`, `description`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `ticket_comments` (
    `id` VARCHAR(36) NOT NULL,
    `ticket_id` VARCHAR(36) NOT NULL,
    `author_id` VARCHAR(36) NOT NULL,
    `body` TEXT NOT NULL,
    `visibility` ENUM('public', 'internal') NOT NULL DEFAULT 'public',
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    INDEX `ticket_comments_ticket_id_idx`(`ticket_id`),
    INDEX `ticket_comments_author_id_idx`(`author_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `attachments` (
    `id` VARCHAR(36) NOT NULL,
    `ticket_id` VARCHAR(36) NOT NULL,
    `comment_id` VARCHAR(36) NULL,
    `uploader_id` VARCHAR(36) NOT NULL,
    `file_name` VARCHAR(500) NOT NULL,
    `mime_type` VARCHAR(100) NOT NULL,
    `s3_key` VARCHAR(500) NOT NULL,
    `size_bytes` BIGINT NOT NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `attachments_ticket_id_idx`(`ticket_id`),
    INDEX `attachments_comment_id_idx`(`comment_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `ticket_history` (
    `id` VARCHAR(36) NOT NULL,
    `ticket_id` VARCHAR(36) NOT NULL,
    `user_id` VARCHAR(36) NULL,
    `field` VARCHAR(50) NOT NULL,
    `old_value` TEXT NULL,
    `new_value` TEXT NULL,
    `metadata` JSON NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `ticket_history_ticket_id_idx`(`ticket_id`),
    INDEX `ticket_history_created_at_idx`(`created_at`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `csat_responses` (
    `id` VARCHAR(36) NOT NULL,
    `ticket_id` VARCHAR(36) NOT NULL,
    `user_id` VARCHAR(36) NOT NULL,
    `rating` INTEGER NOT NULL,
    `comment` TEXT NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    UNIQUE INDEX `csat_responses_ticket_id_key`(`ticket_id`),
    INDEX `csat_responses_user_id_idx`(`user_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `notifications` (
    `id` VARCHAR(36) NOT NULL,
    `user_id` VARCHAR(36) NOT NULL,
    `type` ENUM('ticket_created', 'ticket_assigned', 'ticket_commented', 'ticket_status_changed', 'sla_warning', 'sla_breach', 'ticket_resolved', 'ticket_closed', 'csat_request') NOT NULL,
    `channel` ENUM('in_app', 'email') NOT NULL DEFAULT 'in_app',
    `title` VARCHAR(255) NOT NULL,
    `body` TEXT NOT NULL,
    `href` VARCHAR(500) NULL,
    `is_read` BOOLEAN NOT NULL DEFAULT false,
    `read_at` DATETIME(3) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `notifications_user_id_is_read_idx`(`user_id`, `is_read`),
    INDEX `notifications_created_at_idx`(`created_at`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `jobs` (
    `id` VARCHAR(36) NOT NULL,
    `type` ENUM('send_email', 'sla_check', 'auto_close_ticket', 'csat_survey', 'generate_report', 'whatsapp_message') NOT NULL,
    `status` ENUM('pending', 'processing', 'completed', 'failed', 'dead') NOT NULL DEFAULT 'pending',
    `payload` JSON NOT NULL,
    `priority` INTEGER NOT NULL DEFAULT 0,
    `attempts` INTEGER NOT NULL DEFAULT 0,
    `max_attempts` INTEGER NOT NULL DEFAULT 3,
    `last_error` TEXT NULL,
    `scheduled_for` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `started_at` DATETIME(3) NULL,
    `completed_at` DATETIME(3) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `jobs_status_scheduled_for_idx`(`status`, `scheduled_for`),
    INDEX `jobs_type_idx`(`type`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `kb_categories` (
    `id` VARCHAR(36) NOT NULL,
    `name` VARCHAR(255) NOT NULL,
    `slug` VARCHAR(100) NOT NULL,
    `description` TEXT NULL,
    `icon` VARCHAR(50) NULL,
    `sort_order` INTEGER NOT NULL DEFAULT 0,
    `is_active` BOOLEAN NOT NULL DEFAULT true,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `kb_categories_slug_key`(`slug`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `kb_articles` (
    `id` VARCHAR(36) NOT NULL,
    `category_id` VARCHAR(36) NOT NULL,
    `title` VARCHAR(500) NOT NULL,
    `slug` VARCHAR(255) NOT NULL,
    `body` LONGTEXT NOT NULL,
    `status` ENUM('draft', 'published', 'archived') NOT NULL DEFAULT 'draft',
    `author_id` VARCHAR(36) NOT NULL,
    `view_count` INTEGER NOT NULL DEFAULT 0,
    `helpful_yes` INTEGER NOT NULL DEFAULT 0,
    `helpful_no` INTEGER NOT NULL DEFAULT 0,
    `published_at` DATETIME(3) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `kb_articles_slug_key`(`slug`),
    INDEX `kb_articles_category_id_idx`(`category_id`),
    INDEX `kb_articles_status_idx`(`status`),
    FULLTEXT INDEX `kb_articles_title_body_idx`(`title`, `body`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `whatsapp_conversations` (
    `id` VARCHAR(36) NOT NULL,
    `wa_id` VARCHAR(20) NOT NULL,
    `ticket_id` VARCHAR(36) NULL,
    `user_name` VARCHAR(255) NULL,
    `state` VARCHAR(50) NOT NULL DEFAULT 'idle',
    `context` JSON NULL,
    `last_message_at` DATETIME(3) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `whatsapp_conversations_wa_id_key`(`wa_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `whatsapp_messages` (
    `id` VARCHAR(36) NOT NULL,
    `conversation_id` VARCHAR(36) NOT NULL,
    `wa_message_id` VARCHAR(100) NULL,
    `direction` VARCHAR(10) NOT NULL,
    `type` VARCHAR(20) NOT NULL,
    `body` TEXT NULL,
    `media_url` VARCHAR(500) NULL,
    `status` VARCHAR(20) NOT NULL DEFAULT 'sent',
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    UNIQUE INDEX `whatsapp_messages_wa_message_id_key`(`wa_message_id`),
    INDEX `whatsapp_messages_conversation_id_idx`(`conversation_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `audit_logs` (
    `id` VARCHAR(36) NOT NULL,
    `entity` VARCHAR(50) NOT NULL,
    `entity_id` VARCHAR(36) NULL,
    `action` ENUM('create', 'update', 'delete', 'login', 'logout', 'export', 'config_change') NOT NULL,
    `user_id` VARCHAR(36) NULL,
    `before` JSON NULL,
    `after` JSON NULL,
    `ip_address` VARCHAR(45) NULL,
    `user_agent` VARCHAR(500) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `audit_logs_entity_entity_id_idx`(`entity`, `entity_id`),
    INDEX `audit_logs_user_id_idx`(`user_id`),
    INDEX `audit_logs_created_at_idx`(`created_at`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `folio_sequences` (
    `id` VARCHAR(36) NOT NULL,
    `year` INTEGER NOT NULL,
    `next_value` INTEGER NOT NULL DEFAULT 1,

    UNIQUE INDEX `folio_sequences_year_key`(`year`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- AddForeignKey
ALTER TABLE `departments` ADD CONSTRAINT `departments_company_id_fkey` FOREIGN KEY (`company_id`) REFERENCES `companies`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `users` ADD CONSTRAINT `users_company_id_fkey` FOREIGN KEY (`company_id`) REFERENCES `companies`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `users` ADD CONSTRAINT `users_department_id_fkey` FOREIGN KEY (`department_id`) REFERENCES `departments`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `magic_links` ADD CONSTRAINT `magic_links_user_id_fkey` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `sessions` ADD CONSTRAINT `sessions_user_id_fkey` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `agent_categories` ADD CONSTRAINT `agent_categories_user_id_fkey` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `agent_categories` ADD CONSTRAINT `agent_categories_category_id_fkey` FOREIGN KEY (`category_id`) REFERENCES `categories`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `business_hours` ADD CONSTRAINT `business_hours_department_id_fkey` FOREIGN KEY (`department_id`) REFERENCES `departments`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `tickets` ADD CONSTRAINT `tickets_company_id_fkey` FOREIGN KEY (`company_id`) REFERENCES `companies`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `tickets` ADD CONSTRAINT `tickets_category_id_fkey` FOREIGN KEY (`category_id`) REFERENCES `categories`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `tickets` ADD CONSTRAINT `tickets_creator_id_fkey` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `tickets` ADD CONSTRAINT `tickets_assignee_id_fkey` FOREIGN KEY (`assignee_id`) REFERENCES `users`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `ticket_comments` ADD CONSTRAINT `ticket_comments_ticket_id_fkey` FOREIGN KEY (`ticket_id`) REFERENCES `tickets`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `ticket_comments` ADD CONSTRAINT `ticket_comments_author_id_fkey` FOREIGN KEY (`author_id`) REFERENCES `users`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `attachments` ADD CONSTRAINT `attachments_ticket_id_fkey` FOREIGN KEY (`ticket_id`) REFERENCES `tickets`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `attachments` ADD CONSTRAINT `attachments_comment_id_fkey` FOREIGN KEY (`comment_id`) REFERENCES `ticket_comments`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `attachments` ADD CONSTRAINT `attachments_uploader_id_fkey` FOREIGN KEY (`uploader_id`) REFERENCES `users`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `ticket_history` ADD CONSTRAINT `ticket_history_ticket_id_fkey` FOREIGN KEY (`ticket_id`) REFERENCES `tickets`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `csat_responses` ADD CONSTRAINT `csat_responses_ticket_id_fkey` FOREIGN KEY (`ticket_id`) REFERENCES `tickets`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `csat_responses` ADD CONSTRAINT `csat_responses_user_id_fkey` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `notifications` ADD CONSTRAINT `notifications_user_id_fkey` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `kb_articles` ADD CONSTRAINT `kb_articles_category_id_fkey` FOREIGN KEY (`category_id`) REFERENCES `kb_categories`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `whatsapp_messages` ADD CONSTRAINT `whatsapp_messages_conversation_id_fkey` FOREIGN KEY (`conversation_id`) REFERENCES `whatsapp_conversations`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;