{
  "lexicon": 1,
  "id": "com.deckbelcher.richtext.facet",
  "defs": {
    "byteSlice": {
      "type": "object",
      "description": "Specifies the sub-string range a facet feature applies to.\nStart index is inclusive, end index is exclusive.\nIndices are zero-indexed, counting bytes of the UTF-8 encoded text.",
      "required": [
        "byteStart",
        "byteEnd"
      ],
      "properties": {
        "byteEnd": {
          "type": "integer",
          "minimum": 0
        },
        "byteStart": {
          "type": "integer",
          "minimum": 0
        }
      }
    },
    "link": {
      "type": "object",
      "description": "Facet feature for a URL.\nThe text URL may have been simplified or truncated, but the facet reference should be a complete URL.",
      "required": [
        "uri"
      ],
      "properties": {
        "uri": {
          "type": "string",
          "format": "uri"
        }
      }
    },
    "main": {
      "type": "object",
      "description": "Annotation of a sub-string within rich text.\nExtends Bluesky's facet system to support DeckBelcher-specific features.",
      "required": [
        "index",
        "features"
      ],
      "properties": {
        "features": {
          "type": "array",
          "items": {
            "type": "union",
            "refs": [
              "#mention",
              "#link",
              "#tag"
            ]
          }
        },
        "index": {
          "type": "ref",
          "ref": "#byteSlice"
        }
      }
    },
    "mention": {
      "type": "object",
      "description": "Facet feature for mention of another account.\nThe text is usually a handle, including an `@` prefix, but the facet reference is a DID.",
      "required": [
        "did"
      ],
      "properties": {
        "did": {
          "type": "string",
          "format": "did"
        }
      }
    },
    "tag": {
      "type": "object",
      "description": "Facet feature for a hashtag.\nThe text usually includes a '#' prefix, but the facet reference should not.",
      "required": [
        "tag"
      ],
      "properties": {
        "tag": {
          "type": "string",
          "maxLength": 640,
          "maxGraphemes": 64
        }
      }
    }
  }
}