{
  "$id": "https://gcn.nasa.gov/schema/v7.0.0/gcn/notices/boom/alert.schema.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "unevaluatedProperties": false,
  "title": "Optical alerts",
  "description": "Optical alert with crossmatch gcn events",
  "allOf": [
    {
      "$ref": "../core/Alert.schema.json",
      "description": "Date and time when the alert has been generated"
    },
    { "$ref": "../core/Reporter.schema.json", "description": "Mission" }
  ],
  "properties": {
    "$schema": true,
    "data": {
      "type": "object",
      "description": "Data container for targets and photometry",
      "$ref": "#/$defs/data"
    }
  },
  "$defs": {
    "data": {
      "type": "object",
      "properties": {
        "targets": {
          "type": "array",
          "description": "An array of alert that temporally crossmatch with GCN events",
          "items": { "$ref": "#/$defs/target" }
        },
        "photometry": {
          "type": "array",
          "description": "An array of photometry points",
          "items": { "$ref": "#/$defs/photometry" }
        }
      }
    },
    "target": {
      "type": "object",
      "allOf": [
        {
          "$ref": "../core/Localization.schema.json",
          "description": "Localization information for the target"
        },
        { "$ref": "../core/Event.schema.json", "description": "Event name" }
      ],
      "properties": {
        "classification_scores": {
          "type": "object",
          "additionalProperties": { "type": "number" },
          "description": "Dictionary mapping classification labels to their scores"
        },
        "gcn_crossmatch": {
          "type": "array",
          "description": "Array of GCN event that crossmatch with this target",
          "items": {
            "$ref": "../core/FollowUp.schema.json",
            "description": "GCN event properties"
          }
        }
      }
    },
    "photometry": {
      "type": "object",
      "allOf": [
        {
          "$ref": "../core/Reporter.schema.json",
          "description": "Instrument information for the photometry point"
        },
        {
          "$ref": "../core/Photometry.schema.json",
          "description": "Photometry information for the photometry point"
        },
        { "$ref": "../core/Event.schema.json", "description": "Event name" },
        {
          "$ref": "../core/DateTime.schema.json",
          "description": "Observation time information"
        }
      ],
      "properties": {
        "telescope": {
          "type": "string",
          "description": "Name of the telescope used to get the photometry point"
        }
      }
    }
  }
}