field_ios

In-the-field app for Radroots on iOS
git clone https://radroots.dev/git/field_ios.git
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TeraTimedCalendarField.swift (1880B)

      1 import SwiftUI
      2 
      3 struct TeraTimedCalendarField: View {
      4   let label: String
      5   let identifier: String
      6   let timeZone: TimeZone
      7   @Binding var seconds: UInt64?
      8 
      9   var body: some View {
     10     if let instant = TeraCalendarEditing.pickerInstant(seconds) {
     11       DatePicker(label, selection: Binding(
     12         get: { TeraCalendarEditing.pickerInstant(seconds) ?? instant },
     13         set: {
     14           if let value = TeraCalendarEditing.pickerSeconds($0),
     15              TeraWallTime.from(value, timeZone: timeZone)?.instants(in: timeZone).contains(value) == true
     16           {
     17             seconds = value
     18           }
     19         }
     20       ))
     21       .environment(\.calendar, Calendar(identifier: .gregorian))
     22       .environment(\.timeZone, timeZone)
     23       .accessibilityLabel(label)
     24       .accessibilityIdentifier(identifier)
     25       repeatedTime
     26     } else {
     27       LabeledContent(label) {
     28         Button(seconds == nil ? "Set time" : "Replace unsupported time") {
     29           seconds = TeraCalendarEditing.pickerSeconds(Date())
     30         }
     31       }
     32       .accessibilityIdentifier(identifier)
     33     }
     34   }
     35 
     36   @ViewBuilder
     37   private var repeatedTime: some View {
     38     let values = seconds.flatMap { TeraWallTime.from($0, timeZone: timeZone) }?.instants(in: timeZone) ?? []
     39     if values.count == 2 {
     40       Picker("\(label), repeated time", selection: $seconds) {
     41         ForEach(Array(values.enumerated()), id: \.element) { index, value in
     42           Text(occurrence(value, index: index)).tag(Optional(value))
     43         }
     44       }
     45       .accessibilityIdentifier("\(identifier).occurrence")
     46     }
     47   }
     48 
     49   private func occurrence(_ seconds: UInt64, index: Int) -> String {
     50     guard let instant = TeraCalendarEditing.pickerInstant(seconds) else { return "Time unavailable" }
     51     let zone = timeZone.abbreviation(for: instant) ?? timeZone.identifier
     52     return "\(index == 0 ? "First" : "Second") occurrence (\(zone))"
     53   }
     54 }