{
  "title": "blocks",
  "type": "array",
  "uniqueItems": true,
  "items": {
    "title": "block",
    "type": "object",
    "properties": {
      "id": {
        "description": "The unique identifier for a block",
        "type": "integer",
        "minimum": 0
      },
      "displayName": {
        "description": "The display name of a block",
        "type": "string"
      },
      "name": {
        "description": "The name of a block",
        "type": "string",
        "pattern": "\\S+"
      },
      "hardness": {
        "description": "Hardness of a block",
        "type": [
          "number",
          "null"
        ],
        "minimum": -1
      },
      "stackSize": {
        "description": "Stack size for a block",
        "type": "integer",
        "minimum": 0
      },
      "diggable": {
        "description": "true if a block is diggable",
        "type": "boolean"
      },
      "boundingBox": {
        "description": "BoundingBox of a block",
        "enum": [
          "block",
          "empty"
        ]
      },
      "material": {
        "description": "Material of a block",
        "type": "string"
      },
      "harvestTools": {
        "description": "Using one of these tools is required to harvest a block, without that you get a 3.33x time penalty.",
        "type": "object",
        "patternProperties": {
          "^[0-9]+$": {"type": "boolean"}
        }
      },
      "variations": {
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "metadata": {
              "type": "integer",
              "minimum": 0
            },
            "displayName": {
              "type": "string"
            },
            "description": {
                "type": "string"
            }
          },
          "required": [
            "metadata",
            "displayName"
          ],
          "additionalProperties": false
        }
      },
      "states": {
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "name": {
              "description": "The name of the property",
              "type": "string"
            },
             "type": {
              "description": "The type of the property",
              "type": "string",
              "enum": ["enum", "bool", "int", "direction"]
            },
            "values": {
              "description": "The possible values of the property",
              "type": "array"
            },
            "num_values": {
              "description": "The number of possible values",
              "type": "number",
             "minimum": 1
            }
          },
          "required": [
            "name",
            "type",
            "num_values"
          ],
          "additionalProperties": false
        }
      },
      "drops": {
        "type": "array",
        "items": {
          "oneOf" : [
            {
              "type": ["integer"]
            },
            {
              "type": "object",
              "properties": {
                "minCount": {
                  "type": "number",
                  "minimum": 0,
                  "description": "minimum number or chance, default : 1"
                },
                "maxCount": {
                  "type": "number",
                  "minimum": 0,
                  "description": "maximum number or chance, default : minCount"
                },
                "drop": {
                  "oneOf": [
                    {
                      "type": ["integer"]
                    },
                    {
                      "type": "object",
                        "properties": {
                          "id": {
                            "type": "integer",
                            "minimum": 0
                          },
                          "metadata": {
                            "type": "integer",
                            "minimum": 0
                          }
                        },
                        "required": [
                          "id",
                          "metadata"
                        ],
                      "additionalProperties": false
                    }
                  ]
                }
              },
              "required": [
                "drop"
              ],
              "additionalProperties": false
            }
          ]
        }
      },
      "transparent": {
        "description": "true if a block is transparent",
        "type": "boolean"
      },
      "emitLight": {
        "description": "Light emitted by that block",
        "type": "integer",
        "minimum": 0,
        "maximum": 15
      },
      "filterLight": {
        "description": "Light filtered by that block",
        "type": "integer",
        "minimum": 0,
        "maximum": 15
      },
      "minStateId": {
        "description": "Minimum state id",
        "type": "integer",
        "minimum": 0
      },
      "maxStateId": {
        "description": "Maximum state id",
        "type": "integer",
        "minimum": 0
      },
      "defaultState": {
        "description": "Default state id",
        "type": "integer",
        "minimum": 0
      },
      "resistance": {
        "description": "Blast resistance",
        "type": [
          "number",
          "null"
        ],
        "minimum": -1
      }
    },
    "required": [
      "id",
      "displayName",
      "name",
      "hardness",
      "stackSize",
      "diggable",
      "boundingBox",
      "drops",
      "transparent",
      "emitLight",
      "filterLight"
    ],
    "additionalProperties": false
  }
}