{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "bps/community",
  "title": "Community-Scale Geometry Schema",
  "description": "Community/site scale geometry: site boundaries, terrain, roads, green spaces, and water bodies. Energy, CFD, and other simulation parameters are in separate schema-community-*.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"
      ]
    },
    "TerrainGrid": {
      "type": "object",
      "allOf": [
        {
          "$ref": "#/$defs/_IdentifiedObject"
        },
        {
          "type": "object",
          "properties": {
            "type": {
              "const": "TerrainGrid"
            },
            "grid_origin": {
              "type": "array",
              "items": {
                "type": "number"
              },
              "minItems": 3,
              "maxItems": 3
            },
            "grid_size_x": {
              "type": "integer",
              "minimum": 1
            },
            "grid_size_y": {
              "type": "integer",
              "minimum": 1
            },
            "cell_size": {
              "type": "number",
              "exclusiveMinimum": 0
            },
            "elevations": {
              "type": "array",
              "items": {
                "type": "number"
              }
            }
          },
          "required": [
            "type",
            "grid_origin",
            "grid_size_x",
            "grid_size_y",
            "cell_size",
            "elevations"
          ],
          "additionalProperties": false
        }
      ]
    },
    "TerrainTIN": {
      "type": "object",
      "allOf": [
        {
          "$ref": "#/$defs/_IdentifiedObject"
        },
        {
          "type": "object",
          "properties": {
            "type": {
              "const": "TerrainTIN"
            },
            "vertices": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "number"
                },
                "minItems": 3,
                "maxItems": 3
              },
              "minItems": 3
            },
            "triangles": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "integer",
                  "minimum": 0
                },
                "minItems": 3,
                "maxItems": 3
              },
              "minItems": 1
            }
          },
          "required": [
            "type",
            "vertices",
            "triangles"
          ],
          "additionalProperties": false
        }
      ]
    },
    "Road": {
      "type": "object",
      "allOf": [
        {
          "$ref": "#/$defs/_IdentifiedObject"
        },
        {
          "type": "object",
          "properties": {
            "type": {
              "const": "Road"
            },
            "centerline": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "number"
                },
                "minItems": 2,
                "maxItems": 3
              },
              "minItems": 2
            },
            "width": {
              "type": "number",
              "exclusiveMinimum": 0
            },
            "surface_material": {
              "type": "string",
              "default": "asphalt"
            }
          },
          "required": [
            "type",
            "centerline",
            "width"
          ],
          "additionalProperties": false
        }
      ]
    },
    "GreenSpace": {
      "type": "object",
      "allOf": [
        {
          "$ref": "#/$defs/_IdentifiedObject"
        },
        {
          "type": "object",
          "properties": {
            "type": {
              "const": "GreenSpace"
            },
            "boundary": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "number"
                },
                "minItems": 2,
                "maxItems": 2
              },
              "minItems": 3
            },
            "vegetation_type": {
              "type": "string",
              "default": "grass"
            },
            "leaf_area_index": {
              "type": "number",
              "minimum": 0,
              "default": 1
            }
          },
          "required": [
            "type",
            "boundary"
          ],
          "additionalProperties": false
        }
      ]
    },
    "WaterBody": {
      "type": "object",
      "allOf": [
        {
          "$ref": "#/$defs/_IdentifiedObject"
        },
        {
          "type": "object",
          "properties": {
            "type": {
              "const": "WaterBody"
            },
            "boundary": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "number"
                },
                "minItems": 2,
                "maxItems": 2
              },
              "minItems": 3
            },
            "depth": {
              "type": "number",
              "exclusiveMinimum": 0,
              "default": 1
            },
            "water_temperature": {
              "type": "number",
              "default": 20
            }
          },
          "required": [
            "type",
            "boundary"
          ],
          "additionalProperties": false
        }
      ]
    },
    "Site": {
      "type": "object",
      "allOf": [
        {
          "$ref": "#/$defs/_IdentifiedObject"
        },
        {
          "type": "object",
          "properties": {
            "type": {
              "const": "Site"
            },
            "boundary": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "number"
                },
                "minItems": 2,
                "maxItems": 2
              },
              "minItems": 3
            },
            "terrain": {
              "oneOf": [
                {
                  "$ref": "#/$defs/TerrainGrid"
                },
                {
                  "$ref": "#/$defs/TerrainTIN"
                },
                {
                  "type": "null"
                }
              ]
            },
            "roads": {
              "type": "array",
              "items": {
                "$ref": "#/$defs/Road"
              }
            },
            "green_spaces": {
              "type": "array",
              "items": {
                "$ref": "#/$defs/GreenSpace"
              }
            },
            "water_bodies": {
              "type": "array",
              "items": {
                "$ref": "#/$defs/WaterBody"
              }
            }
          },
          "required": [
            "type"
          ],
          "additionalProperties": false
        }
      ]
    }
  }
}