Meshtastic-Apple/Meshtastic/Views/Nodes/EnvironmentMetricsLog.swift

//
//  DeviceMetricsLog.swift
//  Meshtastic
//
//  Copyright(c) Garth Vander Houwen 7/7/22.
//
import SwiftUI

struct EnvironmentMetricsLog: View {

	@Environment(\.managedObjectContext) var context
	@EnvironmentObject var bleManager: BLEManager

	@State private var isPresentingClearLogConfirm: Bool = false

	@State var isExporting = false
	@State var exportString = ""

	var node: NodeInfoEntity

	var body: some View {
		
		let environmentMetrics = node.telemetries?.filtered(using: NSPredicate(format: "metricsType == 1")).reversed() as? [TelemetryEntity] ?? []

		NavigationStack {
			let localeDateFormat = DateFormatter.dateFormat(fromTemplate: "yyMMddjmma", options: 0, locale: Locale.current)
			let dateFormatString = (localeDateFormat ?? "MM/dd/YY j:mma").replacingOccurrences(of: ",", with: "")
			Text("\(environmentMetrics.count) Readings")
			if UIDevice.current.userInterfaceIdiom == .pad || UIDevice.current.userInterfaceIdiom == .mac {
				// Add a table for mac and ipad
				Table(environmentMetrics) {
					TableColumn("Temperature") { em in
						Text(em.temperature.formattedTemperature())
					}
					TableColumn("Humidity") { em in
						Text("\(String(format: "%.2f", em.relativeHumidity))%")
					}
					TableColumn("Barometric Pressure") { em in
						Text("\(String(format: "%.2f", em.barometricPressure)) hPa")
					}
					TableColumn("gas.resistance") { em in
						Text("\(String(format: "%.2f", em.gasResistance)) ohms")
					}
					TableColumn("current") { em in
						Text("\(String(format: "%.2f", em.current))")
					}
					TableColumn("voltage") { em in
						Text("\(String(format: "%.2f", em.voltage))")
					}
					TableColumn("timestamp") { em in
						Text(em.time?.formattedDate(format: dateFormatString) ?? NSLocalizedString("unknown.age", comment: ""))
					}
				}
			} else {
				ScrollView {
					let columns = [
						GridItem(.flexible(minimum: 30, maximum: 60), spacing: 0.1),
						GridItem(.flexible(minimum: 30, maximum: 60), spacing: 0.1),
						GridItem(.flexible(minimum: 30, maximum: 60), spacing: 0.1),
						GridItem(.flexible(minimum: 30, maximum: 60), spacing: 0.1),
						GridItem(spacing: 0)
					]
					LazyVGrid(columns: columns, alignment: .leading, spacing: 1) {

					GridRow {
						Text("Temp")
							.font(.caption)
							.fontWeight(.bold)
						Text("Hum")
							.font(.caption)
							.fontWeight(.bold)
						Text("Bar")
							.font(.caption)
							.fontWeight(.bold)
						Text("gas")
							.font(.caption)
							.fontWeight(.bold)
						Text("timestamp")
							.font(.caption)
							.fontWeight(.bold)
					}
					ForEach(node.telemetries?.reversed() as? [TelemetryEntity] ?? [], id: \.self) { (em: TelemetryEntity) in

						GridRow {

							Text(em.temperature.formattedTemperature())
								.font(.caption)
							Text("\(String(format: "%.2f", em.relativeHumidity))%")
								.font(.caption)
							Text("\(String(format: "%.2f", em.barometricPressure))")
								.font(.caption)
							Text("\(String(format: "%.2f", em.gasResistance))")
								.font(.caption)
							Text(em.time?.formattedDate(format: dateFormatString) ?? NSLocalizedString("unknown.age", comment: ""))
								.font(.caption2)
						}
					}
				}
				.padding(.leading, 15)
				.padding(.trailing, 5)
			}
			}
		}
		HStack {

			Button(role: .destructive) {
				isPresentingClearLogConfirm = true
			} label: {
				Label("Clear Log", systemImage: "trash.fill")
			}
			.buttonStyle(.bordered)
			.buttonBorderShape(.capsule)
			.controlSize(.large)
			.padding()
			.confirmationDialog(
				"are.you.sure",
				isPresented: $isPresentingClearLogConfirm,
				titleVisibility: .visible
			) {
				Button("Delete all environment metrics?", role: .destructive) {
					if clearTelemetry(destNum: node.num, metricsType: 1, context: context) {
						print("Clear Environment Metrics Log Failed")
					}
				}
			}
			Button {
				exportString = telemetryToCsvFile(telemetry: node.telemetries!.array as? [TelemetryEntity] ?? [], metricsType: 1)
				isExporting = true
			} label: {
				Label("save", systemImage: "square.and.arrow.down")
			}
			.buttonStyle(.bordered)
			.buttonBorderShape(.capsule)
			.controlSize(.large)
			.padding()
		}
		.navigationTitle("Environment Metrics Log")
		.navigationBarTitleDisplayMode(.inline)
		.navigationBarItems(trailing:
			ZStack {
			ConnectedDevice(bluetoothOn: bleManager.isSwitchedOn, deviceConnected: bleManager.connectedPeripheral != nil, name: (bleManager.connectedPeripheral != nil) ? bleManager.connectedPeripheral.shortName : "????")
		})
		.onAppear {
			self.bleManager.context = context
		}
		.fileExporter(
			isPresented: $isExporting,
			document: CsvDocument(emptyCsv: exportString),
			contentType: .commaSeparatedText,
			defaultFilename: String("\(node.user!.longName ?? "Node") Environment Metrics Log"),
			onCompletion: { result in
				if case .success = result {
					print("Environment metrics log download succeeded.")
					self.isExporting = false
				} else {
					print("Environment metrics log download failed: \(result).")
				}
			}
		)
	}
}