{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://yovision.local/contracts/sense-device-audit-v2.schema.json",
  "title": "Sense Device Audit Event v2",
  "description": "v1 的向后兼容后继：增加脱敏设备配置受理事实，仍不定义 Bell relay。",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "event_id", "event_type", "tenant_id", "site_id", "device_id",
    "actor", "reason", "trace_id", "aggregate_generation",
    "projection_versions", "data", "occurred_at"
  ],
  "properties": {
    "event_id": {"type": "string", "pattern": "^audit_[0-9a-f]{32}$"},
    "event_type": {
      "enum": [
        "device.created",
        "device.desired_state.accepted",
        "device.configuration.accepted"
      ]
    },
    "tenant_id": {"$ref": "#/$defs/logicalId"},
    "site_id": {"$ref": "#/$defs/logicalId"},
    "device_id": {"$ref": "#/$defs/logicalId"},
    "actor": {
      "type": "object",
      "additionalProperties": false,
      "required": ["type", "id"],
      "properties": {
        "type": {"enum": ["user", "service", "system"]},
        "id": {"type": "string", "minLength": 1, "maxLength": 200}
      }
    },
    "reason": {"type": ["string", "null"], "maxLength": 500},
    "trace_id": {"type": ["string", "null"], "maxLength": 128},
    "aggregate_generation": {"type": "integer", "minimum": 1},
    "projection_versions": {
      "type": "object",
      "additionalProperties": false,
      "required": ["quota_source_version", "area_policy_source_version"],
      "properties": {
        "quota_source_version": {"type": ["integer", "null"], "minimum": 1},
        "area_policy_source_version": {"type": ["integer", "null"], "minimum": 1}
      }
    },
    "data": {
      "oneOf": [
        {"$ref": "#/$defs/deviceCreatedData"},
        {"$ref": "#/$defs/desiredStateData"},
        {"$ref": "#/$defs/configurationData"}
      ]
    },
    "occurred_at": {"type": "string", "format": "date-time"}
  },
  "allOf": [
    {
      "if": {"properties": {"event_type": {"const": "device.created"}}},
      "then": {"properties": {"data": {"$ref": "#/$defs/deviceCreatedData"}}}
    },
    {
      "if": {"properties": {"event_type": {"const": "device.desired_state.accepted"}}},
      "then": {"properties": {"data": {"$ref": "#/$defs/desiredStateData"}}}
    },
    {
      "if": {"properties": {"event_type": {"const": "device.configuration.accepted"}}},
      "then": {"properties": {"data": {"$ref": "#/$defs/configurationData"}}}
    }
  ],
  "$defs": {
    "logicalId": {
      "type": "string",
      "minLength": 1,
      "maxLength": 128,
      "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$"
    },
    "desiredState": {"enum": ["disabled", "enabled"]},
    "deviceCreatedData": {
      "type": "object",
      "additionalProperties": false,
      "required": ["kind", "area_id", "modality", "capabilities", "desired_state"],
      "properties": {
        "kind": {"const": "device_created"},
        "area_id": {"$ref": "#/$defs/logicalId"},
        "modality": {"enum": ["video", "radar", "contact", "button", "wearable", "other"]},
        "capabilities": {
          "type": "array",
          "maxItems": 16,
          "uniqueItems": true,
          "items": {"enum": ["video_capture", "audio_capture", "spatial_rule", "telemetry"]}
        },
        "desired_state": {"$ref": "#/$defs/desiredState"}
      }
    },
    "desiredStateData": {
      "type": "object",
      "additionalProperties": false,
      "required": ["kind", "previous_desired_state", "desired_state", "changed"],
      "properties": {
        "kind": {"const": "desired_state_accepted"},
        "previous_desired_state": {"$ref": "#/$defs/desiredState"},
        "desired_state": {"$ref": "#/$defs/desiredState"},
        "changed": {"type": "boolean"}
      }
    },
    "configurationData": {
      "type": "object",
      "additionalProperties": false,
      "required": ["kind", "changed", "changed_fields", "area_id"],
      "properties": {
        "kind": {"const": "configuration_accepted"},
        "changed": {"type": "boolean"},
        "changed_fields": {
          "type": "array",
          "maxItems": 5,
          "uniqueItems": true,
          "items": {
            "enum": ["name", "area_id", "endpoint_ref", "credential_ref", "profile_token"]
          }
        },
        "area_id": {"$ref": "#/$defs/logicalId"}
      }
    }
  }
}