Implement budget creation

Twigs.xcodeproj/project.pbxproj

@@ -49,6 +49,7 @@
 		8076A8522809FE99006B9DC9 /* Collections in Frameworks */ = {isa = PBXBuildFile; productRef = 8076A8512809FE99006B9DC9 /* Collections */; };
 		80820145275FFD380040996E /* SidebarBudgetView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 80820144275FFD380040996E /* SidebarBudgetView.swift */; };
 		808CA1A728354005002EDD59 /* XCTest.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 808CA1A628354005002EDD59 /* XCTest.framework */; };
+		808CA1A928355B30002EDD59 /* BudgetFormView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 808CA1A828355B30002EDD59 /* BudgetFormView.swift */; };
 		809B942327221EC800B1DAE2 /* CategoryFormSheet.swift in Sources */ = {isa = PBXBuildFile; fileRef = 809B942227221EC800B1DAE2 /* CategoryFormSheet.swift */; };
 		80A419ED2787C0A00090C515 /* TwigsCli.swift in Sources */ = {isa = PBXBuildFile; fileRef = 80A419EC2787C0A00090C515 /* TwigsCli.swift */; };
 		80A419F52787C1520090C515 /* ArgumentParser in Frameworks */ = {isa = PBXBuildFile; productRef = 80A419F42787C1520090C515 /* ArgumentParser */; };
@@ -133,6 +134,7 @@
 		806C784F272B700B00FA1375 /* TwigsApp.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TwigsApp.swift; sourceTree = "<group>"; };
 		80820144275FFD380040996E /* SidebarBudgetView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SidebarBudgetView.swift; sourceTree = "<group>"; };
 		808CA1A628354005002EDD59 /* XCTest.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = XCTest.framework; path = Platforms/iPhoneOS.platform/Developer/Library/Frameworks/XCTest.framework; sourceTree = DEVELOPER_DIR; };
+		808CA1A828355B30002EDD59 /* BudgetFormView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BudgetFormView.swift; sourceTree = "<group>"; };
 		809B942227221EC800B1DAE2 /* CategoryFormSheet.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CategoryFormSheet.swift; sourceTree = "<group>"; };
 		809B94242722597800B1DAE2 /* es */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = es; path = es.lproj/Localizable.strings; sourceTree = "<group>"; };
 		80A419EA2787C0A00090C515 /* twigs-cli */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = "twigs-cli"; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -192,6 +194,7 @@
 				2841022F2342D97300EAFA29 /* BudgetListsView.swift */,
 				28FE6AF52342E4CC00D5543E /* BudgetRepository.swift */,
 				282126BA235CDD3C00072D52 /* BudgetDetailsView.swift */,
+				808CA1A828355B30002EDD59 /* BudgetFormView.swift */,
 			);
 			path = Budget;
 			sourceTree = "<group>";
@@ -566,6 +569,7 @@
 				284102302342D97300EAFA29 /* BudgetListsView.swift in Sources */,
 				282126BD235CDE1400072D52 /* ProgressView.swift in Sources */,
 				806C7850272B700B00FA1375 /* TwigsApp.swift in Sources */,
+				808CA1A928355B30002EDD59 /* BudgetFormView.swift in Sources */,
 				28CE8B9523525F990072BC4C /* Extensions.swift in Sources */,
 				801D08CC275ECEFA00931465 /* RecurringTransactionsListView.swift in Sources */,
 			);

Twigs/Budget/BudgetFormView.swift

@@ -0,0 +1,77 @@
+//
+//  BudgetFormView.swift
+//  Twigs
+//
+//  Created by William Brawner on 5/18/22.
+//  Copyright © 2022 William Brawner. All rights reserved.
+//
+
+import SwiftUI
+import TwigsCore
+
+struct BudgetFormView: View {
+    @EnvironmentObject var dataStore: DataStore
+    @State private var title = ""
+    @State private var description = ""
+    @State private var showingAlert = false
+    private var budgetId: String {
+        get {
+            if case let .editing(budget) = dataStore.budget {
+                return budget.id
+            } else {
+                return ""
+            }
+        }
+    }
+    
+    @ViewBuilder
+    var stateContent: some View {
+        switch dataStore.category {
+        case .success(_):
+            EmptyView()
+        case .saving(_):
+            EmbeddedLoadingView()
+        default:
+            Form {
+                TextField("prompt_name", text: $title)
+                    .textInputAutocapitalization(.words)
+                TextField("prompt_description", text: $description)
+                    .textInputAutocapitalization(.sentences      )
+                if case let .editing(budget) = dataStore.budget, budget.id != "" {
+                    Button(action: {
+                        self.showingAlert = true
+                    }) {
+                        Text("delete")
+                            .foregroundColor(.red)
+                    }
+                    .alert(isPresented: $showingAlert) {
+                        Alert(title: Text("confirm_delete"), message: Text("cannot_undo"), primaryButton: .destructive(Text("delete"), action: {
+                            Task {
+                                await self.dataStore.deleteBudget()
+                            }
+                        }), secondaryButton: .cancel())
+                    }
+                } else {
+                    EmptyView()
+                }
+            }
+        }
+    }
+    
+    @ViewBuilder
+    var body: some View {
+        stateContent
+            .navigationBarItems(
+                trailing: Button("save") {
+                    Task {
+                        await self.dataStore.save(Budget(id: budgetId, name: title, description: description, currencyCode: nil))
+                    }
+                })
+    }
+}
+
+struct BudgetFormView_Previews: PreviewProvider {
+    static var previews: some View {
+        BudgetFormView()
+    }
+}

Twigs/Budget/BudgetListsView.swift

@@ -20,14 +20,12 @@ struct BudgetListsView: View {
             action: { await self.dataStore.getBudgets(count: nil, page: nil) },
             errorTextLocalizedStringKey: "budgets_load_failure"
         ) { (budgets: [Budget]) in
-            Section("budgets") {
             ForEach(budgets) { budget in
                 BudgetListItemView(budget)
             }
         }
     }
 }
-}
 
 struct BudgetListItemView: View {
     @EnvironmentObject var dataStore: DataStore

Twigs/DataStore.swift

@@ -27,6 +27,7 @@ class DataStore : ObservableObject {
     }
     @Published var overview: AsyncData<BudgetOverview> = .empty
     @Published var showBudgetSelection: Bool = true
+    @Published var editingBudget: Bool = false
 
     init(
         _ apiService: TwigsApiService
@@ -59,6 +60,61 @@ class DataStore : ObservableObject {
         }
     }
     
+    func newBudget() {
+        self.budget = .editing(Budget(id: "", name: "", description: "", currencyCode: ""))
+        self.editingBudget = true
+    }
+    
+    func save(_ budget: Budget) async {
+        self.budget = .saving(budget)
+        do {
+            var savedBudget: Budget
+            if budget.id != "" {
+                savedBudget = try await self.apiService.updateBudget(budget)
+            } else {
+                savedBudget = try await self.apiService.newBudget(budget)
+            }
+            await self.selectBudget(savedBudget)
+            if case let .success(budgets) = self.budgets {
+                var updatedBudgets = budgets.filter(withoutId: budget.id)
+                updatedBudgets.append(savedBudget)
+                self.budgets = .success(updatedBudgets.sorted(by: { $0.name < $1.name }))
+            }
+        } catch {
+            self.budget = .error(error, budget)
+        }
+    }
+    
+    func deleteBudget() async {
+        guard case let .editing(budget) = self.budget, budget.id != "" else {
+            return
+        }
+        self.budget = .loading
+        do {
+            try await self.apiService.deleteBudget(budget.id)
+            await self.selectBudget(nil)
+            if case let .success(budgets) = self.budgets {
+                self.budgets = .success(budgets.filter(withoutId: budget.id))
+            }
+        } catch {
+            self.budget = .error(error, budget)
+        }
+    }
+    
+    func cancelEditBudget() async {
+        guard case let .success(budgets) = self.budgets else {
+            return
+        }
+        if budgets.isEmpty {
+            // Prevent the user from exiting the new budget flow if they haven't created any budgets yet
+            return
+        }
+        guard case let .editing(budget) = self.budget else {
+            return
+        }
+        await self.selectBudget(budget)
+    }
+    
     func loadOverview(_ budget: Budget) async {
         self.overview = .loading
         do {
@@ -92,12 +148,20 @@ class DataStore : ObservableObject {
         }
     }
     
-    func selectBudget(_ budget: Budget) async {
+    func selectBudget(_ budget: Budget?) async {
+        self.editingBudget = false
+        if let budget = budget {
             self.budget = .success(budget)
             await loadOverview(budget)
             await getTransactions()
             await getCategories(budgetId: budget.id, expense: nil, archived: nil, count: nil, page: nil)
             await getRecurringTransactions()
+        } else {
+            self.budget = .empty
+            self.transactions = .empty
+            self.categories = .empty
+            self.recurringTransactions = .empty
+        }
     }
 
     @Published var categories: AsyncData<[TwigsCore.Category]> = .empty

Twigs/TabbedBudgetView.swift

@@ -81,9 +81,23 @@ struct TabbedBudgetView: View {
         
         .sheet(isPresented: $dataStore.showBudgetSelection,
                  content: {
+            NavigationView {
+                VStack {
                     List {
                         BudgetListsView().environmentObject(dataStore)
                     }
+                    .navigationTitle("budgets")
+                    .navigationBarItems(trailing: Button(action: {dataStore.newBudget()}, label: {
+                        Image(systemName: "plus")
+                            .padding()
+                    }))
+                    NavigationLink(
+                        isActive: self.$dataStore.editingBudget,
+                        destination: { BudgetFormView().navigationTitle("new_budget") },
+                        label: { EmptyView() }
+                    )
+                }
+            }
             .interactiveDismissDisabled(true)
         })
     }

Twigs/en.lproj/Localizable.strings

@@ -64,6 +64,7 @@
 // MARK: Budgets
 "budget" = "Budget";
 "budgets" = "Budgets";
+"new_budget" = "New Budget";
 "current_balance" = "Current Balance:";
 "expected" = "Expected:";
 "actual" = "Actual:";

Twigs/es.lproj/Localizable.strings

@@ -64,6 +64,7 @@
 // MARK: Budgets
 "budget" = "Presupuesto";
 "budgets" = "Presupuestos";
+"new_budget" = "Nuevo Presupuesto";
 "current_balance" = "Saldo Actual:";
 "income" = "Ingresos:";
 "expenses" = "Gastos:";