{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "GeoParquet",
  "description": "Parquet metadata included in the geo field.",
  "type": "object",
  "required": ["version", "primary_column", "columns"],
  "properties": {
    "version": {"type": "string", "const": "1.0.0-beta.1"},
    "primary_column": {"type": "string", "minLength": 1},
    "columns": {
      "type": "object",
      "minProperties": 1,
      "patternProperties": {
        ".+": {
          "type": "object",
          "required": ["encoding", "geometry_types"],
          "properties": {
            "encoding": {"type": "string", "const": "WKB"},
            "geometry_types": {
              "type": "array",
              "uniqueItems": true,
              "items": {
                "type": "string",
                "pattern": "^(GeometryCollection|(Multi)?(Point|LineString|Polygon))( Z)?$"
              }
            },
            "crs": {
              "oneOf": [
                {
                  "$ref": "https://proj.org/schemas/v0.5/projjson.schema.json"
                },
                {"type": "null"}
              ]
            },
            "edges": {"type": "string", "enum": ["planar", "spherical"]},
            "orientation": {"type": "string", "const": "counterclockwise"},
            "bbox": {
              "type": "array",
              "items": {"type": "number"},
              "oneOf": [
                {
                  "description": "2D bbox consisting of (xmin, ymin, xmax, ymax)",
                  "minItems": 4,
                  "maxItems": 4
                },
                {
                  "description": "3D bbox consisting of (xmin, ymin, zmin, xmax, ymax, zmax)",
                  "minItems": 6,
                  "maxItems": 6
                }
              ]
            },
            "epoch": {"type": "number"}
          }
        }
      },
      "additionalProperties": false
    }
  }
}