{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/vacs-project/vacs-data/refs/heads/main/docs/schemas/positions.schema.json",
  "title": "vacs dataset - position configuration",
  "type": "object",
  "additionalProperties": false,
  "required": ["positions"],
  "properties": {
    "positions": {
      "type": "array",
      "items": { "$ref": "#/$defs/Position" },
      "minItems": 1
    }
  },
  "$defs": {
    "PositionId": {
      "type": "string",
      "minLength": 1,
      "description": "Position identifier. Should match a VATSIM position as defined in your sectorfile. Must start with your FIR's two-letter country code and be globally unique, e.g. LOWW_APP, LOWW_CTR"
    },
    "ProfileId": {
      "type": "string",
      "minLength": 1,
      "description": "Profile identifier, used to reference profile in positions configuration. Must start with your FIR's two-letter country code and be globally unique, e.g. LOVV, LOWW."
    },
    "FacilityType": {
      "type": "string",
      "enum": [
        "RMP",
        "DEL",
        "GND",
        "TWR",
        "APP",
        "DEP",
        "CTR",
        "FSS",
        "RDO",
        "FMP"
      ],
      "description": "VATSIM facility type code."
    },
    "Position": {
      "type": "object",
      "additionalProperties": false,
      "required": ["id", "prefixes", "frequency", "facility_type"],
      "properties": {
        "id": { "$ref": "#/$defs/PositionId" },
        "prefixes": {
          "type": "array",
          "minItems": 1,
          "items": {
            "type": "string",
            "minLength": 1
          },
          "uniqueItems": true
        },
        "frequency": {
          "type": "string",
          "pattern": "^\\d{3}\\.\\d{3}$",
          "description": "Frequency in XXX.XXX format (e.g. 119.400)."
        },
        "facility_type": { "$ref": "#/$defs/FacilityType" },
        "profile_id": { "$ref": "#/$defs/ProfileId" }
      }
    }
  }
}