{
  "endpoint": "/api/sync/garmin/health-metrics",
  "method": "POST",
  "description": "Triggers synchronization of Garmin Connect health metrics to CentralDB.",
  "request": {
    "headers": {
      "Authorization": "Bearer <token>"
    },
    "body": {
      "type": "object",
      "properties": {
        "start_date": {
          "type": "string",
          "format": "date",
          "description": "Optional start date to sync health metrics from (YYYY-MM-DD). Defaults to last sync date."
        },
        "end_date": {
          "type": "string",
          "format": "date",
          "description": "Optional end date to sync health metrics until (YYYY-MM-DD). Defaults to today."
        }
      },
      "additionalProperties": false
    }
  },
  "response": {
    "202": {
      "description": "Synchronization process initiated successfully.",
      "body": {
        "type": "object",
        "properties": {
          "message": {
            "type": "string",
            "example": "Garmin health metrics synchronization initiated."
          },
          "sync_job_id": {
            "type": "string",
            "format": "uuid",
            "description": "ID of the created synchronization job."
          }
        },
        "required": ["message", "sync_job_id"]
      }
    },
    "401": {
      "description": "Unauthorized: User not authenticated or Garmin Connect account not linked.",
      "body": {
        "type": "object",
        "properties": {
          "detail": {
            "type": "string",
            "example": "Not authenticated or Garmin Connect account not linked."
          }
        }
      }
    },
    "429": {
      "description": "Too Many Requests: Rate limit exceeded for Garmin Connect API.",
      "body": {
        "type": "object",
        "properties": {
          "detail": {
            "type": "string",
            "example": "Rate limit exceeded. Please try again later."
          }
        }
      }
    },
    "500": {
      "description": "Internal Server Error: Unexpected error during synchronization initiation.",
      "body": {
        "type": "object",
        "properties": {
          "detail": {
            "type": "string",
            "example": "An unexpected error occurred."
          }
        }
      }
    }
  }
}