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+import CoreData
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+import Foundation
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+import SwiftUI
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+
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+struct MealPresetView: View {
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+ @StateObject var state: Bolus.StateModel
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+ @Environment(\.colorScheme) var colorScheme
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+ @Environment(\.dismiss) var dismiss
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+ @Environment(\.managedObjectContext) var moc
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+
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+ @State private var showAlert = false
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+ @State private var dish: String = ""
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+ @State private var saved: Bool = false
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+
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+ @State private var addNewPreset: Bool = false
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+
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+ @State private var presetCarbs: Decimal = 0
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+ @State private var presetFat: Decimal = 0
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+ @State private var presetProtein: Decimal = 0
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+
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+ @State private var carbs: Decimal = 0
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+ @State private var fat: Decimal = 0
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+ @State private var protein: Decimal = 0
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+
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+ @FetchRequest(
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+ entity: MealPresetStored.entity(),
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+ sortDescriptors: [NSSortDescriptor(key: "dish", ascending: true)]
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+ ) var carbPresets: FetchedResults<MealPresetStored>
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+
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+ private var mealFormatter: NumberFormatter {
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+ let formatter = NumberFormatter()
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+ formatter.numberStyle = .decimal
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+ formatter.maximumFractionDigits = 1
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+ return formatter
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+ }
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+
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+ private var color: LinearGradient {
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+ colorScheme == .dark ? LinearGradient(
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+ gradient: Gradient(colors: [
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+ Color.bgDarkBlue,
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+ Color.bgDarkerDarkBlue
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+ ]),
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+ startPoint: .top,
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+ endPoint: .bottom
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+ )
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+ :
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+ LinearGradient(
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+ gradient: Gradient(colors: [Color.gray.opacity(0.1)]),
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+ startPoint: .top,
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+ endPoint: .bottom
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+ )
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+ }
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+
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+ var body: some View {
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+ NavigationStack {
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+ Form {
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+ if addNewPreset {
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+ showNewPresetForm()
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+ } else {
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+ addNewPresetButton
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+ }
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+
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+ mealPresets
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+ dishInfos()
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+ addPresetToTreatmentsButton
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+ }
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+ .scrollContentBackground(.hidden).background(color)
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+ .navigationTitle("Meal Presets")
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+ .navigationBarTitleDisplayMode(.inline)
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+ .toolbar(content: {
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+ ToolbarItem(placement: .topBarLeading) {
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+ Button {
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+ dismiss()
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+ } label: {
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+ Text("Close")
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+ }
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+ }
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+ })
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+ .onDisappear {
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+ resetValues()
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+ }
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+ }
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+ }
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+
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+ private var addNewPresetButton: some View {
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+ Button(action: {
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+ addNewPreset = true
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+ }, label: {
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+ HStack {
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+ Spacer()
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+ Text("Add new meal Preset")
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+ Spacer()
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+ }
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+ })
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+ }
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+
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+ @ViewBuilder private func showNewPresetForm() -> some View {
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+ Section {
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+ TextField("Name Of Dish", text: $dish)
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+ } header: {
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+ Text("New Preset")
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+ } footer: {
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+ Text("Add a name for your Preset")
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+ }
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+
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+ Section {
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+ carbsTextField()
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+
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+ if state.useFPUconversion {
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+ proteinAndFat()
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+ }
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+ } footer: {
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+ Text("Add the macros for your new Preset")
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+ }
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+
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+ savePresetButton
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+ }
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+
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+ @ViewBuilder private func carbsTextField() -> some View {
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+ HStack {
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+ Text("Carbs").fontWeight(.semibold)
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+ Spacer()
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+ TextFieldWithToolBar(
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+ text: $presetCarbs,
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+ placeholder: "0",
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+ keyboardType: .numberPad,
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+ numberFormatter: mealFormatter
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+ )
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+ Text("g").foregroundColor(.secondary)
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+ }
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+ }
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+
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+ @ViewBuilder private func proteinAndFat() -> some View {
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+ HStack {
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+ Text("Fat").foregroundColor(.orange)
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+ Spacer()
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+ TextFieldWithToolBar(text: $presetFat, placeholder: "0", keyboardType: .numberPad, numberFormatter: mealFormatter)
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+ Text("g").foregroundColor(.secondary)
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+ }
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+ HStack {
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+ Text("Protein").foregroundColor(.red)
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+ Spacer()
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+ TextFieldWithToolBar(
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+ text: $presetProtein,
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+ placeholder: "0",
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+ keyboardType: .numberPad,
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+ numberFormatter: mealFormatter
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+ )
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+ Text("g").foregroundColor(.secondary)
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+ }
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+ }
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+
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+ private var mealPresets: some View {
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+ Section {
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+ HStack {
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+ if state.selection != nil {
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+ minusButton
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+ }
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+ Picker("Preset", selection: $state.selection) {
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+ Text("Saved Food").tag(nil as MealPresetStored?)
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+ ForEach(carbPresets, id: \.self) { (preset: MealPresetStored) in
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+ Text(preset.dish ?? "").tag(preset as MealPresetStored?)
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+ }
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+ }
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+ .labelsHidden()
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+ .frame(maxWidth: .infinity, alignment: .center)
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+ ._onBindingChange($state.selection) { _ in
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+ carbs += ((state.selection?.carbs ?? 0) as NSDecimalNumber) as Decimal
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+ fat += ((state.selection?.fat ?? 0) as NSDecimalNumber) as Decimal
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+ protein += ((state.selection?.protein ?? 0) as NSDecimalNumber) as Decimal
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+ state.addToSummation()
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+ }
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+ if state.selection != nil {
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+ plusButton
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+ }
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+ }
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+
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+ HStack {
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+ Spacer()
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+
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+ Button("Delete Preset") {
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+ showAlert.toggle()
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+ }
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+ .disabled(state.selection == nil)
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+ .tint(.orange)
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+ .buttonStyle(.borderless)
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+ .alert(
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+ "Delete preset '\(state.selection?.dish ?? "")'?",
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+ isPresented: $showAlert,
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+ actions: {
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+ Button("No", role: .cancel) {}
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+ Button("Yes", role: .destructive) {
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+ if let selection = state.selection {
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+ let previousSelection = state.selection
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+ let count = state.summation.filter { $0 == selection.dish }.count
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+ state.summation.removeAll { $0 == selection.dish }
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+ carbs -= (((selection.carbs ?? 0) as NSDecimalNumber) as Decimal) * Decimal(count)
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+ fat -= (((selection.fat ?? 0) as NSDecimalNumber) as Decimal) * Decimal(count)
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+ protein -= (((selection.protein ?? 0) as NSDecimalNumber) as Decimal) * Decimal(count)
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+ state.deletePreset()
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+ state.selection = previousSelection
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+ }
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+ }
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+ }
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+ )
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+
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+ Spacer()
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+ }
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+
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+ } footer: {
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+ Text("Here you can choose from an existing Preset to add it to your treatments")
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+ }
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+ }
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+
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+ private var savePresetButton: some View {
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+ Button {
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+ saved = true
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+ if dish != "", saved {
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+ let preset = MealPresetStored(context: moc)
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+ preset.dish = dish
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+ preset.fat = presetFat as NSDecimalNumber
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+ preset.protein = presetProtein as NSDecimalNumber
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+ preset.carbs = presetCarbs as NSDecimalNumber
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+ if self.moc.hasChanges {
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+ try? moc.save()
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+ }
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+// state.addNewPresetToWaitersNotepad(dish)
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+ resetValues()
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+ saved = false
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+ addNewPreset = false
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+ }
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+ }
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+ label: {
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+ Text("Save")
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+ .font(.headline)
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+ .foregroundStyle(Color.white)
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+ .frame(maxWidth: .infinity, alignment: .center)
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+ }
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+ .disabled(notEnoughPresetInfosGiven)
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+ .listRowBackground(notEnoughPresetInfosGiven ? Color(.systemGray3) : Color(.systemBlue))
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+ .shadow(radius: 3)
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+ .clipShape(RoundedRectangle(cornerRadius: 8))
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+ }
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+
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+ private var addPresetToTreatmentsButton: some View {
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+ Button {
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+ state.carbs += carbs
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+ state.fat += fat
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+ state.protein += protein
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+
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+ dismiss()
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+ }
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+ label: {
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+ Text("Add to treatments")
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+ .font(.headline)
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+ .foregroundStyle(Color.white)
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+ .frame(maxWidth: .infinity, alignment: .center)
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+ }
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+ .disabled(noPresetChosen)
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+ .listRowBackground(noPresetChosen ? Color(.systemGray3) : Color(.systemBlue))
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+ .shadow(radius: 3)
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+ .clipShape(RoundedRectangle(cornerRadius: 8))
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+ }
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+
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+ private var noPresetChosen: Bool {
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+ state.selection == nil || carbs == 0 || fat == 0 || protein == 0
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+ }
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+
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+ private var notEnoughPresetInfosGiven: Bool {
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+ state
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+ .useFPUconversion ? (presetCarbs <= 0 && presetFat <= 0 && presetProtein <= 0 || dish == "") :
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+ (presetCarbs <= 0 || dish == "")
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+ }
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+
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+ @ViewBuilder private func dishInfos() -> some View {
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+ if !state.summation.isEmpty {
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+ let presetSummary = generatePresetSummary()
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+
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+ Section(header: Text("Summary")) {
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+ presetSummary
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+ .lineLimit(nil) // In case the text is too long, allow it to wrap to the next line
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+
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+ HStack {
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+ HStack {
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+ Text("Carbs: ")
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+ .font(.subheadline)
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+ .foregroundStyle(.secondary)
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+ Text("\(carbs as NSNumber, formatter: mealFormatter)")
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+ Text(" g")
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+ .font(.subheadline)
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+ .foregroundStyle(.secondary)
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+ }
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+
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+ Spacer()
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+
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+ HStack {
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+ Text("Fat: ")
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+ .font(.subheadline)
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+ .foregroundStyle(.secondary)
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+ Text("\(fat as NSNumber, formatter: mealFormatter)")
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+ Text(" g")
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+ .font(.subheadline)
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+ .foregroundStyle(.secondary)
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+ }
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+
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+ Spacer()
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+
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+ HStack {
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+ Text("Protein: ")
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+ .font(.subheadline)
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+ .foregroundStyle(.secondary)
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+ Text("\(protein as NSNumber, formatter: mealFormatter)")
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+ Text(" g")
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+ .font(.subheadline)
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+ .foregroundStyle(.secondary)
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+ }
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+ }
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+ }
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+ }
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+ }
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+
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+ private func generatePresetSummary() -> some View {
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+ var counts = [String: Int]()
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+
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+ for preset in state.summation {
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+ counts[preset, default: 0] += 1
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+ }
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+
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+ return VStack(alignment: .leading) {
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+ ForEach(counts.sorted(by: { $0.key < $1.key }), id: \.key) { key, value in
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+ if value > 0 {
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+ HStack {
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+ Text("\(value)")
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+ .foregroundColor(.blue)
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+ Text(key)
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+ }
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+ }
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+ }
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+ }
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+ }
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+
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+ private func resetValues() {
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+ dish = ""
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+ presetCarbs = 0
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+ presetFat = 0
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+ presetProtein = 0
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+// saved = false
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+// addNewPreset = false
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+ state.selection = nil
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+ state.summation.removeAll()
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+ }
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+
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+ private var minusButton: some View {
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+ Button {
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+ if carbs != 0 {
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+ carbs -= (((state.selection?.carbs ?? 0) as NSDecimalNumber) as Decimal)
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+ } else { carbs = 0 }
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+
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+ if fat != 0,
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+ (fat - (((state.selection?.fat ?? 0) as NSDecimalNumber) as Decimal) as Decimal) >= 0
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+ {
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+ fat -= (((state.selection?.fat ?? 0) as NSDecimalNumber) as Decimal)
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+ } else { fat = 0 }
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+
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+ if protein != 0,
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+ (protein - (((state.selection?.protein ?? 0) as NSDecimalNumber) as Decimal) as Decimal) >= 0
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+ {
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+ protein -= (((state.selection?.protein ?? 0) as NSDecimalNumber) as Decimal)
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+ } else { protein = 0 }
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+
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+ state.removePresetFromNewMeal()
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+ if carbs == 0, fat == 0, protein == 0 { state.summation = [] }
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+ }
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+ label: { Image(systemName: "minus.circle.fill")
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+ .font(.system(size: 20))
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+ }
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+ .disabled(
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+ state
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+ .selection == nil ||
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+ (
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+ !state.summation
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+ .contains(state.selection?.dish ?? "") && (state.selection?.dish ?? "") != ""
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+ )
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+ )
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+ .buttonStyle(.borderless)
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+ .tint(.blue)
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+ }
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+
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+ private var plusButton: some View {
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+ Button {
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+ carbs += ((state.selection?.carbs ?? 0) as NSDecimalNumber) as Decimal
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+ fat += ((state.selection?.fat ?? 0) as NSDecimalNumber) as Decimal
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+ protein += ((state.selection?.protein ?? 0) as NSDecimalNumber) as Decimal
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+
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+ state.addPresetToNewMeal()
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+ }
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+ label: { Image(systemName: "plus.circle.fill")
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+ .font(.system(size: 20))
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+ }
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+ .disabled(state.selection == nil)
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+ .buttonStyle(.borderless)
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+ .tint(.blue)
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+ }
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+}
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polscm32 aka Marvout