{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://micarrsim.local/schemas/array.schema.json",
  "title": "micarrsim microphone array",
  "type": "object",
  "additionalProperties": false,
  "required": ["schemaVersion", "kind", "id", "name", "units", "coordinateSystem", "aperture", "microphones"],
  "properties": {
    "schemaVersion": { "const": "1.0.0" },
    "kind": { "const": "micarrsim.array" },
    "id": { "type": "string", "pattern": "^[a-z0-9][a-z0-9._-]*$" },
    "name": { "type": "string", "minLength": 1, "maxLength": 120 },
    "description": { "type": "string", "maxLength": 1000 },
    "units": { "const": "m" },
    "coordinateSystem": { "$ref": "#/$defs/coordinateSystem" },
    "aperture": {
      "type": "object", "additionalProperties": false, "required": ["width", "height"],
      "properties": {
        "width": { "type": "number", "exclusiveMinimum": 0, "maximum": 20 },
        "height": { "type": "number", "exclusiveMinimum": 0, "maximum": 20 }
      }
    },
    "microphones": { "type": "array", "minItems": 1, "maxItems": 1024, "items": { "$ref": "#/$defs/microphone" } }
  },
  "$defs": {
    "coordinateSystem": {
      "type": "object", "additionalProperties": false,
      "required": ["handedness", "xAxis", "yAxis", "zAxis"],
      "properties": {
        "handedness": { "const": "right" }, "xAxis": { "const": "right" },
        "yAxis": { "const": "up" }, "zAxis": { "const": "toward-scene" }
      }
    },
    "position": {
      "type": "array",
      "prefixItems": [{ "type": "number" }, { "type": "number" }, { "type": "number" }],
      "items": false, "minItems": 3, "maxItems": 3
    },
    "microphone": {
      "type": "object", "additionalProperties": false, "required": ["id", "position"],
      "properties": {
        "id": { "type": "string", "minLength": 1, "maxLength": 64 },
        "position": { "$ref": "#/$defs/position" },
        "sensitivityDb": { "type": "number", "minimum": -120, "maximum": 120 },
        "phaseOffsetDeg": { "type": "number", "minimum": -180, "maximum": 180 }
      }
    }
  }
}