StatusUpdateManager.swift

Purpose 

StatusUpdateManager.swift is a centralized singleton manager that tracks and serializes runtime sensor status for MetaWear and Sensoria devices. It serves as a bridge between native sensor handlers and Flutter, helping present real-time device status.

Singleton Pattern 

static let shared = StatusUpdateManager()

Used app-wide to access live status data from any part of the iOS native layer.

Key Properties 

var metaWearData = StatusUpdateMetaWearData()
var sensoriaData = StatusUpdatSensoriaData()

metaWearData: Holds live status fields for MetaWear devices.
sensoriaData: Same for Sensoria smart garments.

Core Methods 

`getMetaWearCurrentStatus(deviceIndex:)`

func getMetaWearCurrentStatus(deviceIndex: Int) -> String

Returns a JSON string representing the device’s current runtime state.
Delegates JSON building to StatusUpdateMetaWearData.

`getSensoriaCurrentStatus(deviceIndex:)`

func getSensoriaCurrentStatus(deviceIndex: Int) -> String

Mirrors the MetaWear version for Sensoria garments.

JSON Utility 

static func serializeToJson(_ statusMap: [String: Any]) -> String

Converts a key-value statusMap into a well-formed JSON string.
Logs serialized output for debugging.
Returns a JSON string or error message if serialization fails.

Example:

{
  "battery": 92,
  "streaming": true,
  "lastUpdate": "2025-07-17T18:00:00Z"
}

Integration 

Sensor handlers populate metaWearData and sensoriaData fields.
When Flutter queries for status, these methods provide serialized snapshots.
Ensures real-time visibility and fault tracing for BLE sensors.