{
  "$id": "https://zmkfirmware.dev/zmk.metadata.json",
  "title": "HardwareMetadata",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "oneOf": [
    {
      "$ref": "#/$defs/board"
    },
    {
      "$ref": "#/$defs/shield"
    },
    {
      "$ref": "#/$defs/interconnect"
    }
  ],
  "$defs": {
    "id": {
      "type": "string",
      "pattern": "^[a-z0-9_]+(@([A-Z]|[0-9]+|([0-9]+(\\.[0-9]+){1,2})))?$"
    },
    "revision": {
      "type": "string",
      "pattern": "[A-Z]|[0-9]+|([0-9]+(\\.[0-9]+){1,2})"
    },
    "keyboard_siblings": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "variant": {
      "oneOf": [
        {
          "type": "string"
        },
        {
          "type": "object",
          "required": ["id", "features"],
          "properties": {
            "id": {
              "$ref": "#/$defs/id"
            },
            "features": {
              "$ref": "#/$defs/features"
            }
          }
        }
      ]
    },
    "features": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "keys",
          "display",
          "encoder",
          "underglow",
          "backlight",
          "pointer",
          "studio"
        ]
      }
    },
    "interconnects": {
      "type": "array",
      "minItems": 1,
      "items": {
        "$ref": "#/$defs/id"
      }
    },
    "sibling_details": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "id": {
          "$ref": "#/$defs/id"
        },
        "features": {
          "$ref": "#/$defs/features"
        },
        "variants": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/variant"
          }
        }
      }
    },
    "interconnect_node_labels": {
      "title": "InterconnectNodeLabels",
      "type": "object",
      "additionalProperties": false,
      "required": ["gpio"],
      "properties": {
        "gpio": { "type": "string" },
        "i2c": { "type": "string" },
        "spi": { "type": "string" },
        "uart": { "type": "string" },
        "adc": { "type": "string" }
      }
    },
    "interconnect": {
      "title": "Interconnect",
      "type": "object",
      "additionalProperties": false,
      "required": ["file_format", "id", "name", "description", "url", "type"],
      "properties": {
        "file_format": {
          "type": "string",
          "const": "1"
        },
        "id": {
          "$ref": "#/$defs/id"
        },
        "name": {
          "type": "string"
        },
        "version": {
          "type": "string"
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "description": {
          "type": "string"
        },
        "node_labels": {
          "$ref": "#/$defs/interconnect_node_labels"
        },
        "design_guideline": {
          "type": "string"
        },
        "manufacturer": {
          "type": "string"
        },
        "type": {
          "type": "string",
          "const": "interconnect"
        }
      }
    },
    "board": {
      "title": "Board",
      "type": "object",
      "additionalProperties": false,
      "required": [
        "file_format",
        "id",
        "name",
        "url",
        "arch",
        "type",
        "outputs"
      ],
      "properties": {
        "file_format": {
          "type": "string",
          "const": "1"
        },
        "id": {
          "$ref": "#/$defs/id"
        },
        "name": {
          "type": "string"
        },
        "version": {
          "type": "string"
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "description": {
          "type": "string"
        },
        "manufacturer": {
          "type": "string"
        },
        "arch": {
          "type": "string",
          "pattern": "^[a-z0-9_]+$"
        },
        "type": {
          "type": "string",
          "const": "board"
        },
        "siblings": {
          "$ref": "#/$defs/keyboard_siblings"
        },
        "outputs": {
          "type": "array",
          "items": {
            "type": "string",
            "enum": ["usb", "ble"]
          }
        },
        "features": {
          "$ref": "#/$defs/features"
        },
        "variants": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/variant"
          }
        },
        "exposes": {
          "$ref": "#/$defs/interconnects"
        },
        "revisions": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/revision"
          }
        },
        "default_revision": {
          "$ref": "#/$defs/revision"
        }
      }
    },
    "shield": {
      "title": "Shield",
      "type": "object",
      "additionalProperties": false,
      "required": ["file_format", "id", "name", "url", "type", "requires"],
      "properties": {
        "file_format": {
          "type": "string",
          "const": "1"
        },
        "id": {
          "$ref": "#/$defs/id"
        },
        "name": {
          "type": "string"
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "description": {
          "type": "string"
        },
        "manufacturer": {
          "type": "string"
        },
        "version": {
          "type": "string"
        },
        "type": {
          "type": "string",
          "const": "shield"
        },
        "features": {
          "$ref": "#/$defs/features"
        },
        "variants": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/variant"
          }
        },
        "siblings": {
          "$ref": "#/$defs/keyboard_siblings"
        },
        "requires": {
          "$ref": "#/$defs/interconnects"
        },
        "exposes": {
          "$ref": "#/$defs/interconnects"
        }
      }
    }
  }
}