{
  "$schema": "https://metabuilder.dev/schemas/entities.schema.json",
  "schemaVersion": "2.0.0",
  "entities": [
    {
      "name": "Notification",
      "version": "1.0",
      "description": "User notification for alerts, messages, and system events",
      "primaryKey": "id",
      "timestamps": false,
      "softDelete": false,
      "fields": {
        "id": {
          "type": "string",
          "generated": true,
          "description": "Unique identifier (CUID)"
        },
        "tenantId": {
          "type": "string",
          "required": true,
          "index": true,
          "description": "Tenant identifier"
        },
        "userId": {
          "type": "string",
          "required": true,
          "index": true,
          "description": "User who receives this notification"
        },
        "type": {
          "type": "enum",
          "required": true,
          "enum": ["info", "warning", "success", "error", "mention", "reply", "follow", "like", "system"],
          "description": "Notification type/severity"
        },
        "title": {
          "type": "string",
          "required": true,
          "maxLength": 200,
          "description": "Notification title"
        },
        "message": {
          "type": "string",
          "required": true,
          "description": "Notification message body"
        },
        "icon": {
          "type": "string",
          "nullable": true,
          "description": "Icon name for display"
        },
        "read": {
          "type": "boolean",
          "default": false,
          "index": true,
          "description": "Whether notification has been read"
        },
        "data": {
          "type": "text",
          "nullable": true,
          "description": "JSON: action URLs, entity references, etc."
        },
        "createdAt": {
          "type": "bigint",
          "required": true,
          "index": true,
          "description": "Creation timestamp in milliseconds"
        },
        "expiresAt": {
          "type": "bigint",
          "nullable": true,
          "index": true,
          "description": "Expiration timestamp in milliseconds"
        }
      },
      "indexes": [
        {
          "fields": ["tenantId"],
          "name": "idx_notification_tenant"
        },
        {
          "fields": ["userId", "read"],
          "name": "idx_notification_user_read"
        },
        {
          "fields": ["createdAt"],
          "name": "idx_notification_created"
        }
      ],
      "relations": [
        {
          "name": "tenant",
          "type": "belongsTo",
          "entity": "Tenant",
          "field": "tenantId",
          "onDelete": "Cascade"
        },
        {
          "name": "user",
          "type": "belongsTo",
          "entity": "User",
          "field": "userId",
          "onDelete": "Cascade"
        }
      ],
      "acl": {
        "create": ["system", "admin"],
        "read": ["self"],
        "update": ["self"],
        "delete": ["self"],
        "rowLevel": "userId = currentUser.id"
      }
    }
  ]
}