import { type NodeDefinition, RoofSegmentNode as RoofSegmentNodeSchema } from '@pascal-app/core'
import { buildRoofSegmentFloorplan } from './floorplan'
import { roofSegmentParametrics } from './parametrics'
import { RoofSegmentNode } from './schema'

/**
 * Roof segment — Stage A. Child of a roof node, owns the per-segment
 * polygon + pitch. Geometry is generated by `RoofSystem` (registered
 * under the parent roof's `def.system`), so the segment kind itself
 * only needs a renderer wrap.
 */
export const roofSegmentDefinition: NodeDefinition<typeof RoofSegmentNode> = {
  kind: 'roof-segment',
  schemaVersion: 1,
  schema: RoofSegmentNode,
  category: 'structure',
  surfaceRole: 'roof',

  defaults: () => {
    const stub = RoofSegmentNodeSchema.parse({
      id: 'roof-segment_default' as never,
      type: 'roof-segment',
    })
    const { id: _id, type: _type, ...rest } = stub
    return rest
  },

  capabilities: {
    selectable: { hitVolume: 'bbox' },
    duplicable: false,
    deletable: true,
  },

  parametrics: roofSegmentParametrics,

  renderer: {
    kind: 'parametric',
    module: () => import('./renderer'),
  },
  floorplan: buildRoofSegmentFloorplan,

  presentation: {
    label: 'Roof Segment',
    description: 'A single pitched plane of a parent roof.',
    icon: { kind: 'url', src: '/icons/roof.png' },
    paletteSection: 'structure',
    paletteOrder: 101,
  },

  mcp: {
    description: 'A single roof segment with polygon footprint + pitch.',
  },
}