{
  "$id": "https://schema.workspec.io/v1alpha1/c4/layout.schema.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "description": "A diagram layout file, pinning node positions and optionally edge routing and camera state.",
  "properties": {
    "edges": {
      "additionalProperties": {
        "additionalProperties": false,
        "description": "Routing hint for one diagram edge.",
        "properties": {
          "waypoints": {
            "description": "Ordered points the edge is routed through.",
            "items": {
              "additionalProperties": false,
              "description": "A single waypoint along a routed edge.",
              "properties": {
                "x": {
                  "description": "X coordinate, top-left page coords.",
                  "type": "number"
                },
                "y": {
                  "description": "Y coordinate, top-left page coords.",
                  "type": "number"
                }
              },
              "required": [
                "x",
                "y"
              ],
              "type": "object"
            },
            "type": "array"
          }
        },
        "required": [
          "waypoints"
        ],
        "type": "object"
      },
      "description": "Optional per-edge routing hints, keyed by \"<from>-><to>\".",
      "propertyNames": {
        "minLength": 1,
        "type": "string"
      },
      "type": "object"
    },
    "nodes": {
      "additionalProperties": {
        "additionalProperties": false,
        "description": "A pinned node position and optional size.",
        "properties": {
          "height": {
            "description": "Optional pinned node height. Omit to use the renderer default.",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "width": {
            "description": "Optional pinned node width. Omit to use the renderer default.",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "x": {
            "description": "X coordinate, top-left page coords.",
            "type": "number"
          },
          "y": {
            "description": "Y coordinate, top-left page coords.",
            "type": "number"
          }
        },
        "required": [
          "x",
          "y"
        ],
        "type": "object"
      },
      "description": "Pinned node positions, keyed by element slug. Absence of a key means auto-layout.",
      "propertyNames": {
        "minLength": 1,
        "type": "string"
      },
      "type": "object"
    },
    "version": {
      "const": 1,
      "description": "Layout file format version; always 1.",
      "type": "number"
    },
    "viewport": {
      "additionalProperties": false,
      "description": "Optional persisted camera state.",
      "properties": {
        "x": {
          "description": "Camera X offset, page coords.",
          "type": "number"
        },
        "y": {
          "description": "Camera Y offset, page coords.",
          "type": "number"
        },
        "zoom": {
          "description": "Camera zoom factor; must be greater than zero.",
          "exclusiveMinimum": 0,
          "type": "number"
        }
      },
      "required": [
        "x",
        "y",
        "zoom"
      ],
      "type": "object"
    }
  },
  "required": [
    "version",
    "nodes"
  ],
  "title": "WorkSpec C4 Layout (v1alpha1)",
  "type": "object"
}