Add SwiftUI demo app

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/Account.swift

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+//
+//  Account.swift
+//  SwiftYNAB-SwiftUI-demo
+//
+//  Created by Andre Bocchini on 12/9/22.
+//
+
+import Foundation
+import SwiftYNAB
+
+struct Account {
+    enum Kind: String {
+        case autoLoan = "autoLoan"
+        case cash = "cash"
+        case checking = "checking"
+        case creditCard = "creditCard"
+        case mortgage = "mortgage"
+        case otherDebt = "otherDebt"
+        case savings = "savings"
+        case unknown
+
+        var display: String {
+            switch self {
+            case .autoLoan:
+                return "Auto Loan"
+            case .cash:
+                return "Cash"
+            case .checking:
+                return "Checking"
+            case .creditCard:
+                return "Credit Card"
+            case .mortgage:
+                return "Mortgage"
+            case .otherDebt:
+                return "Other Debt"
+            case .savings:
+                return "Savings"
+            case .unknown:
+                return "Unknown"
+            }
+        }
+    }
+
+    let id: String
+    let name: String
+    let kind: Kind
+    let balance: String
+    let closed: Bool
+
+}
+
+extension Account {
+    init(account: SwiftYNAB.Account, budget: Budget) {
+        self.id = account.id
+        self.name = account.name
+
+        if let kind = Kind(rawValue: account.type) {
+            self.kind = kind
+        } else {
+            self.kind = .unknown
+        }
+
+        let currencyFormatter = CurrencyFormatter(currencyFormat: budget.currencyFormat)
+        self.balance = currencyFormatter.currencyString(from: account.balance) ?? ""
+
+        self.closed = account.closed
+    }
+}

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/AccountRowView.swift

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+//
+//  AccountRowView.swift
+//  SwiftYNAB-SwiftUI-demo
+//
+//  Created by Andre Bocchini on 12/9/22.
+//
+
+import Foundation
+import SwiftUI
+
+struct AccountRowView: View {
+    let account: Account
+
+    var body: some View {
+        HStack(spacing: 8) {
+            VStack(spacing: 8) {
+                Text(account.name)
+                    .font(.headline)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+                Text(account.kind.display)
+                    .font(.subheadline)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+            }
+            .frame(maxWidth: .infinity)
+
+            Text(account.balance)
+                .font(.subheadline)
+                .frame(alignment: .trailing)
+        }
+    }
+}

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/AccountsView.swift

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+//
+//  AccountsView.swift
+//  SwiftYNAB-SwiftUI-demo
+//
+//  Created by Andre Bocchini on 12/9/22.
+//
+
+import Foundation
+import SwiftUI
+
+struct AccountsView: View {
+    @Binding var token: String
+
+    @State var viewModel: AccountsViewModelType
+
+    var body: some View {
+        VStack {
+            if viewModel.isLoading {
+                ProgressView()
+                    .progressViewStyle(.circular)
+                    .scaleEffect(2, anchor: .center)
+            } else if viewModel.isError {
+                Text("Error loading accounts!")
+            } else {
+                List(viewModel.accounts, id: \.id) { account in
+                    NavigationLink {
+                        TransactionsView(
+                            token: $token,
+                            viewModel: TransactionsViewModel(
+                                budget: viewModel.budget,
+                                account: account
+                            )
+                        )
+                    } label: {
+                        AccountRowView(account: account)
+                    }
+                }
+            }
+        }
+        .navigationTitle("Accounts")
+        .onAppear {
+            Task {
+                await viewModel.fetchAccounts(using: token)
+            }
+        }
+    }
+}

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/AccountsViewModel.swift

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+//
+//  AccountsViewModel.swift
+//  SwiftYNAB-SwiftUI-demo
+//
+//  Created by Andre Bocchini on 12/9/22.
+//
+
+import Foundation
+import SwiftYNAB
+
+protocol AccountsViewModelType {
+    var isLoading: Bool { get }
+    var isError: Bool { get }
+    var accounts: [Account] { get }
+    var budget: Budget { get }
+
+    mutating func fetchAccounts(using token: String) async
+}
+
+struct AccountsViewModel: AccountsViewModelType {
+    private(set) var isLoading = false
+    private(set) var isError = false
+    private(set) var accounts: [Account] = []
+    private(set) var budget: Budget
+}
+
+extension AccountsViewModel {
+    @MainActor mutating func fetchAccounts(using token: String) async {
+        if !isLoading, !isError {
+            defer {
+                isLoading = false
+            }
+
+            isLoading = true
+            let ynab = YNAB(accessToken: token)
+
+            do {
+                let result = try await ynab.accounts.getAccounts(budgetId: budget.id)
+                accounts = result
+                    .filter({ !$0.closed })
+                    .map({ Account(account: $0, budget: budget) })
+
+                isError = false
+            } catch {
+                isError = true
+            }
+        }
+    }
+}

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/Assets.xcassets/AccentColor.colorset/Contents.json

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+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/Assets.xcassets/AppIcon.appiconset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/Assets.xcassets/Contents.json

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+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/Budget.swift

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+//
+//  Budget.swift
+//  SwiftYNAB-SwiftUI-demo
+//
+//  Created by Andre Bocchini on 12/9/22.
+//
+
+import Foundation
+import SwiftYNAB
+
+struct Budget: Identifiable {
+    let id: String
+    let name: String
+    let currencyFormat: CurrencyFormat
+}
+
+extension Budget {
+    init(summary: BudgetSummary) {
+        self.id = summary.id
+        self.name = summary.name
+        self.currencyFormat = summary.currencyFormat
+    }
+}

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/BudgetViewModel.swift

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+//
+//  BudgetViewModel.swift
+//  SwiftYNAB-SwiftUI-demo
+//
+//  Created by Andre Bocchini on 12/9/22.
+//
+
+import Foundation
+import SwiftYNAB
+
+protocol BudgetViewModelType {
+    var isLoading: Bool { get }
+    var isError: Bool { get }
+    var budgets: [Budget] { get }
+
+    mutating func fetchBudgets(using token: String) async
+}
+
+struct BudgetViewModel: BudgetViewModelType {
+    private(set) var isLoading = false
+    private(set) var isError = false
+    private(set) var budgets: [Budget] = []
+}
+
+extension BudgetViewModel {
+    @MainActor mutating func fetchBudgets(using token: String) async {
+        if !isLoading, !isError {
+            defer {
+                isLoading = false
+            }
+
+            isLoading = true
+            let ynab = YNAB(accessToken: token)
+
+            do {
+                let result = try await ynab.budgets.getBudgets()
+                budgets = result.map({ Budget(summary: $0) })
+
+                isError = false
+            } catch {
+                isError = true
+            }
+        }
+    }
+}

SwiftYNAB-SwiftUI-demo/SwiftYNAB-SwiftUI-demo/BudgetsView.swift

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+//
+//  BudgetsView.swift
+//  SwiftYNAB-SwiftUI-demo
+//
+//  Created by Andre Bocchini on 12/8/22.
+//
+
+import Foundation
+import SwiftUI
+
+struct BudgetsView: View {
+    @Binding var token: String
+
+    @State var viewModel: BudgetViewModelType = BudgetViewModel()
+
+    var body: some View {
+        VStack {
+            if viewModel.isLoading {
+                ProgressView()
+                    .progressViewStyle(.circular)
+                    .scaleEffect(2, anchor: .center)
+            } else if viewModel.isError {
+                Text("Error loading budgets!")
+            } else {
+                List(viewModel.budgets, id: \.id) { budget in
+                    NavigationLink {
+                        AccountsView(token: $token, viewModel: AccountsViewModel(budget: budget))
+                    } label: {
+                        Text(budget.name)
+                    }
+                }
+            }
+        }
+        .navigationTitle("Budgets")
+        .onAppear {
+            Task {
+                await viewModel.fetchBudgets(using: token)
+            }
+        }
+    }
+}