{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Archify model registry",
  "description": "Shared elements of a model: one name for one thing. Diagrams refer to an element with `ref: <id>`.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "elements"
  ],
  "properties": {
    "schema_version": {
      "const": 1
    },
    "elements": {
      "type": "object",
      "description": "Element id → element. Ids are unique across all registry files of the model.",
      "propertyNames": {
        "pattern": "^[a-zA-Z][a-zA-Z0-9_-]*$"
      },
      "additionalProperties": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "type",
          "label"
        ],
        "properties": {
          "type": {
            "enum": [
              "frontend",
              "backend",
              "database",
              "cloud",
              "security",
              "messagebus",
              "external"
            ]
          },
          "label": {
            "type": "string",
            "minLength": 1
          },
          "sublabel": {
            "type": "string"
          },
          "tag": {
            "type": "string"
          },
          "icon": {
            "description": "Decorative corner icon. Omit the icon field for the type default; none hides it. Does not change type, color, or legend grouping.",
            "enum": [
              "calendar",
              "clock",
              "person",
              "briefcase",
              "flag",
              "moon",
              "frontend",
              "backend",
              "database",
              "cloud",
              "security",
              "messagebus",
              "external",
              "start",
              "active",
              "waiting",
              "success",
              "failure",
              "neutral",
              "none"
            ]
          },
          "brand": {
            "oneOf": [
              {
                "type": "string",
                "minLength": 1,
                "maxLength": 2048,
                "anyOf": [
                  {
                    "maxLength": 80,
                    "pattern": "^[^\\r\\n]+$"
                  },
                  {
                    "pattern": "^https?://"
                  }
                ]
              },
              {
                "type": "object",
                "additionalProperties": false,
                "required": [
                  "url",
                  "sha256"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "minLength": 8,
                    "maxLength": 2048,
                    "pattern": "^https?://"
                  },
                  "sha256": {
                    "type": "string",
                    "pattern": "^[a-f0-9]{64}$"
                  }
                }
              }
            ]
          },
          "sources": {
            "type": "array",
            "minItems": 1,
            "maxItems": 3,
            "items": {
              "type": "object",
              "additionalProperties": false,
              "required": [
                "path"
              ],
              "properties": {
                "path": {
                  "type": "string",
                  "minLength": 1,
                  "maxLength": 240
                },
                "line": {
                  "type": "integer",
                  "minimum": 1
                },
                "end_line": {
                  "type": "integer",
                  "minimum": 1
                },
                "label": {
                  "type": "string",
                  "minLength": 1,
                  "maxLength": 48
                }
              }
            }
          },
          "description": {
            "type": "string",
            "description": "The one description of this thing; shown on hover and on the model page."
          },
          "diagram": {
            "type": "string",
            "description": "Diagram that explains this element, relative to the model root (main.archify). Double-click the node to open it."
          }
        }
      }
    }
  }
}