{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://venuemind.dev/schemas/live-occupancy-monitor.schema.json",
  "title": "VenueMind Live Occupancy Monitor",
  "type": "object",
  "required": [
    "schemaVersion",
    "id",
    "projectId",
    "runbookVersionId",
    "source",
    "baseline",
    "policy",
    "feeds",
    "observations",
    "activeAlerts",
    "receipts",
    "ledger",
    "revision",
    "createdAt",
    "updatedAt"
  ],
  "properties": {
    "schemaVersion": {
      "const": 1
    },
    "id": {
      "type": "string"
    },
    "projectId": {
      "type": "string"
    },
    "runbookVersionId": {
      "type": "string"
    },
    "source": {
      "type": "object"
    },
    "baseline": {
      "type": "object"
    },
    "policy": {
      "type": "object"
    },
    "feeds": {
      "type": "array",
      "items": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "$id": "https://venuemind.dev/schemas/aggregate-occupancy-signal.schema.json",
        "title": "VenueMind Aggregate Occupancy Signal",
        "type": "object",
        "required": [
          "sourceId",
          "sourceType",
          "sourceVersion",
          "kind",
          "observedAt",
          "confidence",
          "readings"
        ],
        "properties": {
          "sourceId": {
            "type": "string",
            "minLength": 1,
            "maxLength": 160
          },
          "sourceType": {
            "enum": [
              "registration",
              "sensor",
              "manual-counter"
            ]
          },
          "sourceVersion": {
            "type": "string",
            "minLength": 1,
            "maxLength": 160
          },
          "kind": {
            "enum": [
              "check-in",
              "zone-occupancy"
            ]
          },
          "observedAt": {
            "type": "string",
            "format": "date-time"
          },
          "confidence": {
            "enum": [
              "low",
              "medium",
              "high"
            ]
          },
          "readings": {
            "type": "array",
            "minItems": 1,
            "maxItems": 100,
            "items": {
              "type": "object",
              "required": [
                "scopeId",
                "count"
              ],
              "properties": {
                "scopeId": {
                  "type": "string",
                  "minLength": 1,
                  "maxLength": 160
                },
                "count": {
                  "type": "integer",
                  "minimum": 0,
                  "maximum": 1000000
                }
              },
              "additionalProperties": false
            }
          }
        },
        "additionalProperties": false
      }
    },
    "observations": {
      "type": "array",
      "items": {
        "type": "object"
      }
    },
    "activeAlerts": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "id",
          "key",
          "code",
          "severity",
          "status",
          "sourceIds",
          "actual",
          "threshold",
          "unit",
          "openedAt"
        ],
        "properties": {
          "id": {
            "type": "string"
          },
          "key": {
            "type": "string"
          },
          "code": {
            "enum": [
              "STALE_SOURCE",
              "CONFLICTING_FEEDS",
              "THRESHOLD_WARNING",
              "CAPACITY_EXCEEDED"
            ]
          },
          "severity": {
            "enum": [
              "warning",
              "critical"
            ]
          },
          "status": {
            "enum": [
              "open",
              "acknowledged"
            ]
          },
          "scopeId": {
            "type": [
              "string",
              "null"
            ]
          },
          "sourceIds": {
            "type": "array",
            "items": {
              "type": "string"
            },
            "uniqueItems": true
          },
          "actual": {
            "type": "number"
          },
          "threshold": {
            "type": "number"
          },
          "unit": {
            "enum": [
              "seconds",
              "persons"
            ]
          },
          "openedAt": {
            "type": "string",
            "format": "date-time"
          },
          "acknowledgedAt": {
            "type": "string",
            "format": "date-time"
          },
          "acknowledgedBy": {
            "type": "string"
          },
          "reasonCode": {
            "type": "string"
          }
        },
        "additionalProperties": false
      }
    },
    "receipts": {
      "type": "array",
      "items": {
        "type": "object"
      }
    },
    "ledger": {
      "type": "array",
      "items": {
        "type": "object"
      }
    },
    "revision": {
      "type": "integer",
      "minimum": 0
    },
    "createdAt": {
      "type": "string",
      "format": "date-time"
    },
    "updatedAt": {
      "type": "string",
      "format": "date-time"
    }
  },
  "additionalProperties": false
}