108 lines
3.4 KiB
Swift
108 lines
3.4 KiB
Swift
import Foundation
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struct DeviceInfo {
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/// The unique ID generated by the device to distinguish between power cycles
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let uniqueIdOfPowerCycle: Int
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/// The number of bytes recorded by the tracker
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let numberOfRecordedBytes: Int
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/// The sum of all recorded bytes
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let dataChecksum: UInt16
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/// The number of measurements already performed
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let numberOfStoredMeasurements: Int
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/// The interval between measurements (in seconds)
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let measurementInterval: Int
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let sensor0: TemperatureSensor?
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let sensor1: TemperatureSensor?
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// MARK: Device time
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let wakeupReason: DeviceWakeCause
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let time: DeviceTime
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// MARK: Storage
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let storageSize: Int
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/// The maximum number of bytes which can be requested
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let transferBlockSize: Int
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var storageFillRatio: Double {
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Double(numberOfRecordedBytes) / Double(storageSize)
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}
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var storageFillPercentage: Int {
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Int((storageFillRatio * 100).rounded())
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}
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var currentMeasurementStartTime: Date {
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time.nextMeasurement.addingTimeInterval(-Double(numberOfStoredMeasurements * measurementInterval))
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}
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}
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extension DeviceInfo {
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init(info: Data) throws {
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let date = Date()
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var data = info
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self.uniqueIdOfPowerCycle = try data.decodeFourByteInteger()
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self.numberOfRecordedBytes = try data.decodeTwoByteInteger()
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let secondsUntilNextMeasurement = try data.decodeTwoByteInteger()
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self.measurementInterval = try data.decodeTwoByteInteger()
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self.numberOfStoredMeasurements = try data.decodeTwoByteInteger()
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let totalNumberOfMeasurements = try data.decodeFourByteInteger()
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self.transferBlockSize = try data.decodeTwoByteInteger()
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self.storageSize = try data.decodeTwoByteInteger()
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let secondsSincePowerOn = try data.decodeFourByteInteger()
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let startSecondsOfCurrentRecording = try data.decodeFourByteInteger()
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self.dataChecksum = try data.decodeUInt16()
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self.wakeupReason = .init(rawValue: try data.getByte()) ?? .WAKEUP_UNDEFINED
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self.sensor0 = try data.decodeSensor()
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self.sensor1 = try data.decodeSensor()
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guard data.isEmpty else {
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log.error("\(data.count) bytes remaining in device info buffer")
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throw DeviceInfoError.missingData
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}
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self.time = .init(
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date: date,
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secondsSincePowerOn: secondsSincePowerOn,
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totalNumberOfMeasurements: totalNumberOfMeasurements,
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secondsUntilNextMeasurement: secondsUntilNextMeasurement,
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secondsOfFirstMeasurement: startSecondsOfCurrentRecording)
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}
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}
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extension DeviceInfo {
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static var mock: DeviceInfo {
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.init(
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uniqueIdOfPowerCycle: .random(in: 0...Int(UInt32.max)),
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numberOfRecordedBytes: 123,
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dataChecksum: .random(in: .min...UInt16.max),
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numberOfStoredMeasurements: 234,
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measurementInterval: 60,
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sensor0: .init(address: [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08], value: .value(21.0), date: .now.addingTimeInterval(-2)),
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sensor1: .init(address: [0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09], value: .value(19.0), date: .now.addingTimeInterval(-4)),
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wakeupReason: .WAKEUP_EXT0,
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time: .mock,
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storageSize: 10000,
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transferBlockSize: 180)
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}
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}
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extension DeviceInfo: Codable {
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}
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