@happyvertical/smrt-properties

Digital property and hierarchical zone management for the s-m-r-t framework. Properties represent websites, apps, or publications. Zones form an arbitrarily nested tree within each property for content and ad placement.

Installation

pnpm add @happyvertical/smrt-properties

Usage

import {
  Property, PropertyCollection,
  Zone, ZoneCollection
} from '@happyvertical/smrt-properties';

// Create a property
const properties = await PropertyCollection.create({ db });
const site = await properties.create({
  name: 'Oak Creek News',
  domain: 'oakcreeknews.com',
  url: 'https://oakcreeknews.com',
  status: 'active',
});
await site.save();

// Build a zone hierarchy: page -> section -> ad slot
const zones = await ZoneCollection.create({ db });
const homePage = await zones.create({
  propertyId: site.id,
  name: 'Home Page',
  type: 'page',
  path: '/',
});
await homePage.save();

const sidebar = await zones.create({
  propertyId: site.id,
  parentId: homePage.id,
  name: 'Sidebar',
  type: 'section',
  selector: '.sidebar',
});
await sidebar.save();

const adSlot = await zones.create({
  propertyId: site.id,
  parentId: sidebar.id,
  name: 'Sidebar Ad',
  type: 'slot',
  width: 300,
  height: 250,
  allowedFormats: ['image', 'html'],
});
await adSlot.save();

// Retrieve the full zone tree for a property
const tree = await zones.getTree(site.id);

// Move a zone (validates against descendant cycles)
await zones.moveZone(adSlot.id, homePage.id);

// Delete a zone — cascade=false moves children to parent
await zones.deleteZone(sidebar.id, false);

Zone hierarchy

Zones use parentId self-referencing to form a tree. Common zone types include page, section, slot, container, and widget. Each zone can specify a URL path pattern, CSS selector, position hint, pixel width/height, and an allowedFormats array for filtering content or ad types. An empty allowedFormats array means all formats are allowed (no restrictions).

The ZoneCollection provides tree operations: getTree() builds a nested structure in memory, getAncestors()/getDescendants() walk the hierarchy, and moveZone() prevents cycles by checking descendants before reparenting. deleteZone(cascade) either removes descendants or orphans children to the deleted zone's parent.

API

Models

Export	Description
Property	Digital property (STI) with domain, URL, status, and owner/repository links
Zone	Hierarchical zone within a property for content/ad placement

Collections

Export	Description
PropertyCollection	CRUD and queries for Property records
ZoneCollection	Zone CRUD plus tree ops: getTree(), moveZone(), deleteZone(), getAncestors(), getDescendants()

Key Types

PropertyOptions, PropertyStatus, ZoneOptions, ZoneTree, ZoneTreeNode

Dependencies

• @happyvertical/smrt-core -- ORM and code generation
• @happyvertical/smrt-tenancy -- optional multi-tenant scoping
• Peer: @happyvertical/smrt-profiles, @happyvertical/smrt-projects (optional)