{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "bps/urban",
  "title": "Urban-Scale Geometry Schema",
  "description": "Urban scale geometry: climate zones and land use boundaries. Energy, CFD, and other simulation parameters are in separate schema-urban-*.json files.",
  "$defs": {
    "_IdentifiedObject": {
      "type": "object",
      "properties": {
        "identifier": {
          "type": "string",
          "pattern": "^[.A-Za-z0-9_-]+$",
          "minLength": 1,
          "maxLength": 100
        },
        "display_name": {
          "type": [
            "string",
            "null"
          ]
        },
        "user_data": {
          "type": [
            "object",
            "null"
          ]
        }
      },
      "required": [
        "identifier"
      ]
    },
    "ClimateZone": {
      "type": "object",
      "allOf": [
        {
          "$ref": "#/$defs/_IdentifiedObject"
        },
        {
          "type": "object",
          "properties": {
            "type": {
              "const": "ClimateZone"
            },
            "boundary": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "number"
                },
                "minItems": 2,
                "maxItems": 2
              },
              "minItems": 3
            },
            "climate_zone_code": {
              "type": "string",
              "description": "e.g. ASHRAE (1A-8B), Chinese (\u4e25\u5bd2/\u5bd2\u51b7/\u590f\u70ed\u51ac\u51b7/\u590f\u70ed\u51ac\u6696/\u6e29\u548c)"
            },
            "heating_degree_days": {
              "type": "number"
            },
            "cooling_degree_days": {
              "type": "number"
            },
            "design_heating_temperature": {
              "type": "number"
            },
            "design_cooling_temperature": {
              "type": "number"
            }
          },
          "required": [
            "type"
          ],
          "additionalProperties": false
        }
      ]
    },
    "LandUse": {
      "type": "object",
      "allOf": [
        {
          "$ref": "#/$defs/_IdentifiedObject"
        },
        {
          "type": "object",
          "properties": {
            "type": {
              "const": "LandUse"
            },
            "boundary": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "number"
                },
                "minItems": 2,
                "maxItems": 2
              },
              "minItems": 3
            },
            "land_use_type": {
              "type": "string",
              "enum": [
                "residential",
                "commercial",
                "industrial",
                "institutional",
                "agricultural",
                "park",
                "water",
                "transportation",
                "mixed"
              ]
            },
            "floor_area_ratio": {
              "type": "number",
              "minimum": 0
            },
            "building_coverage_ratio": {
              "type": "number",
              "minimum": 0,
              "maximum": 1
            },
            "green_ratio": {
              "type": "number",
              "minimum": 0,
              "maximum": 1
            },
            "population_density": {
              "type": "number",
              "minimum": 0,
              "description": "people per hectare"
            }
          },
          "required": [
            "type",
            "land_use_type"
          ],
          "additionalProperties": false
        }
      ]
    }
  }
}