{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/onthegomap/planetiler/main/planetiler-custommap/planetilerspec.schema.json",
  "title": "Planetiler Specification",
  "description": "Planetiler schema specification with example input features and the expected output features",
  "type": "object",
  "properties": {
    "examples": {
      "description": "A list of example input features, and the output vector tile features they should map to",
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "name": {
            "description": "Unique name for this test case",
            "type": "string"
          },
          "input": {
            "description": "The input feature from a source",
            "type": "object",
            "properties": {
              "source": {
                "description": "ID of the source this feature comes from",
                "type": "string"
              },
              "geometry": {
                "description": "Geometry type of the input feature",
                "type": "string",
                "enum": [
                  "polygon",
                  "line",
                  "point"
                ]
              },
              "tags": {
                "description": "Key/value attributes on the source feature",
                "oneOf": [
                  {
                    "type": "object"
                  },
                  {
                    "type": "null"
                  }
                ]
              }
            }
          },
          "output": {
            "description": "The output vector tile feature(s) this map to, or [] for no features",
            "oneOf": [
              {
                "$ref": "#/$defs/output"
              },
              {
                "type": "array",
                "items": {
                  "$ref": "#/$defs/output"
                }
              }
            ]
          }
        }
      }
    }
  },
  "$defs": {
    "output": {
      "type": "object",
      "properties": {
        "layer": {
          "description": "Vector tile layer of the expected output feature",
          "type": "string"
        },
        "geometry": {
          "description": "Geometry type of the expected output feature",
          "$ref": "#/$defs/geometry"
        },
        "min_zoom": {
          "description": "Min zoom level that the output feature appears in",
          "type": "integer"
        },
        "max_zoom": {
          "description": "Max zoom level that the output feature appears in",
          "type": "integer"
        },
        "min_size": {
          "description": "Minimum length of line features or square root of the minimum area of polygon features to emit below the maximum zoom-level of the map",
          "type": "number"
        },
        "tags": {
          "description": "Attributes expected on the output vector tile feature, or null if the attribute should not be set. Use allow_extra_tags: true to fail if any other tags appear besides the ones specified here",
          "oneOf": [
            {
              "type": "object"
            },
            {
              "type": "null"
            }
          ]
        },
        "allow_extra_tags": {
          "description": "If true, then fail when extra attributes besides tags appear on the output feature. If false or unset then ignore them.",
          "type": "boolean"
        },
        "at_zoom": {
          "description": "Some attributes change by zoom level, so get values at this zoom level for comparison",
          "type": "integer"
        }
      }
    },
    "geometry": {
      "type": "string",
      "enum": [
        "polygon",
        "line",
        "point"
      ]
    }
  }
}