1→import SwiftUI
     2→
     3→enum NavigationItem: String, CaseIterable, Identifiable {
     4→    case dashboard = "Dashboard"
     5→    case currency = "Câmbio"
     6→    case rates = "Taxas"
     7→    case institutions = "Instituições"
     8→    case pix = "PIX"
     9→    case expectations = "Focus"
    10→
    11→    var id: String { rawValue }
    12→
    13→    var icon: String {
    14→        switch self {
    15→        case .dashboard: return "square.grid.2x2"
    16→        case .currency: return "dollarsign.circle"
    17→        case .rates: return "percent"
    18→        case .institutions: return "building.columns"
    19→        case .pix: return "qrcode"
    20→        case .expectations: return "chart.line.uptrend.xyaxis"
    21→        }
    22→    }
    23→
    24→    var color: Color {
    25→        switch self {
    26→        case .dashboard: return .bcbBlue
    27→        case .currency: return .bcbGreen
    28→        case .rates: return .bcbPurple
    29→        case .institutions: return .bcbPink
    30→        case .pix: return .green
    31→        case .expectations: return .bcbYellow
    32→        }
    33→    }
    34→}
    35→
    36→struct ContentView: View {
    37→    @EnvironmentObject var viewModel: DashboardViewModel
    38→    @State private var selectedItem: NavigationItem? = .dashboard
    39→    @State private var columnVisibility: NavigationSplitViewVisibility = .all
    40→    @State private var showingExportSheet = false
    41→    @State private var exportFormat: ExportFormat = .json
    42→
    43→    var body: some View {
    44→        NavigationSplitView(columnVisibility: $columnVisibility) {
    45→            SidebarView(selectedItem: $selectedItem)
    46→        } detail: {
    47→            Group {
    48→                switch selectedItem {
    49→                case .dashboard:
    50→                    DashboardView()
    51→                case .currency:
    52→                    CurrencyListView()
    53→                case .rates:
    54→                    RatesView()
    55→                case .institutions:
    56→                    InstitutionsView()
    57→                case .pix:
    58→                    PIXStatsView()
    59→                case .expectations:
    60→                    ExpectationsView()
    61→                case .none:
    62→                    WelcomeView()
    63→                }
    64→            }
    65→            .frame(maxWidth: .infinity, maxHeight: .infinity)
    66→        }
    67→        .navigationSplitViewStyle(.balanced)
    68→        .toolbar {
    69→            ToolbarItemGroup(placement: .navigation) {
    70→                // Status indicator
    71→                HStack(spacing: 6) {
    72→                    Circle()
    73→                        .fill(viewModel.errorMessage == nil ? .green : .red)
    74→                        .frame(width: 8, height: 8)
    75→
    76→                    if viewModel.isLoading {
    77→                        Text("Atualizando...")
    78→                            .font(.caption)
    79→                            .foregroundStyle(.secondary)
    80→                    } else if let error = viewModel.errorMessage {
    81→                        Text("Erro")
    82→                            .font(.caption)
    83→                            .foregroundStyle(.red)
    84→                            .help(error)
    85→                    } else {
    86→                        Text("Online")
    87→                            .font(.caption)
    88→                            .foregroundStyle(.secondary)
    89→                    }
    90→                }
    91→            }
    92→
    93→            ToolbarItemGroup(placement: .primaryAction) {
    94→                // Loading indicator
    95→                if viewModel.isLoading {
    96→                    ProgressView()
    97→                        .controlSize(.small)
    98→                }
    99→
   100→                // Quick values
   101→                QuickValuePill(
   102→                    label: "USD",
   103→                    value: viewModel.dollarQuote?.sellRate.toBRL() ?? "--",
   104→                    color: .bcbGreen
   105→                )
   106→
   107→                QuickValuePill(
   108→                    label: "SELIC",
   109→                    value: String(format: "%.2f%%", viewModel.selicTarget?.numericValue ?? 0.0),
   110→                    color: .bcbPurple
   111→                )
   112→
   113→                Divider()
   114→
   115→                // Refresh button
   116→                Button {
   117→                    Task {
   118→                        await viewModel.refreshAll()
   119→                    }
   120→                } label: {
   121→                    Image(systemName: "arrow.clockwise")
   122→                }
   123→                .keyboardShortcut("r", modifiers: .command)
   124→                .disabled(viewModel.isLoading)
   125→                .help("Atualizar (⌘R)")
   126→
   127→                // Export button
   128→                Menu {
   129→                    Button {
   130→                        exportFormat = .json
   131→                        exportData()
   132→                    } label: {
   133→                        Label("Exportar JSON", systemImage: "doc.text")
   134→                    }
   135→
   136→                    Button {
   137→                        exportFormat = .csv
   138→                        exportData()
   139→                    } label: {
   140→                        Label("Exportar CSV", systemImage: "tablecells")
   141→                    }
   142→
   143→                    Divider()
   144→
   145→                    Button {
   146→                        copyToClipboard()
   147→                    } label: {
   148→                        Label("Copiar Resumo", systemImage: "doc.on.doc")
   149→                    }
   150→                } label: {
   151→                    Image(systemName: "square.and.arrow.up")
   152→                }
   153→                .help("Exportar dados")
   154→
   155→                // Last update
   156→                if let lastUpdate = viewModel.lastUpdate {
   157→                    Text(lastUpdate.toRelativeString())
   158→                        .font(.caption)
   159→                        .foregroundStyle(.secondary)
   160→                        .help(lastUpdate.toFullBRString())
   161→                }
   162→            }
   163→        }
   164→        .task {
   165→            await viewModel.refreshAll()
   166→        }
   167→        .alert("Erro", isPresented: .constant(viewModel.errorMessage != nil)) {
   168→            Button("OK") {
   169→                viewModel.dismissError()
   170→            }
   171→            Button("Tentar Novamente") {
   172→                Task {
   173→                    await viewModel.refreshAll()
   174→                }
   175→            }
   176→        } message: {
   177→            Text(viewModel.errorMessage ?? "Erro desconhecido")
   178→        }
   179→    }
   180→
   181→    private func exportData() {
   182→        let panel = NSSavePanel()
   183→        panel.allowedContentTypes = exportFormat == .json ? [.json] : [.commaSeparatedText]
   184→        panel.nameFieldStringValue = "bcb-data-\(Date().toFilenameDateString()).\(exportFormat.rawValue)"
   185→
   186→        panel.begin { response in
   187→            if response == .OK, let url = panel.url {
   188→                let data = generateExportData(format: exportFormat)
   189→                try? data.write(to: url, atomically: true, encoding: .utf8)
   190→            }
   191→        }
   192→    }
   193→
   194→    private func generateExportData(format: ExportFormat) -> String {
   195→        switch format {
   196→        case .json:
   197→            return generateJSONExport()
   198→        case .csv:
   199→            return generateCSVExport()
   200→        }
   201→    }
   202→
   203→    private func generateJSONExport() -> String {
   204→        var export: [String: Any] = [:]
   205→
   206→        export["exportDate"] = Date().toFullBRString()
   207→        export["source"] = "Banco Central do Brasil"
   208→
   209→        if let dollar = viewModel.dollarQuote {
   210→            export["dollarQuote"] = [
   211→                "buy": dollar.buyRate,
   212→                "sell": dollar.sellRate,
   213→                "date": dollar.formattedDate
   214→            ]
   215→        }
   216→
   217→        if let euro = viewModel.euroQuote {
   218→            export["euroQuote"] = [
   219→                "buy": euro.buyRate,
   220→                "sell": euro.sellRate,
   221→                "date": euro.formattedDate
   222→            ]
   223→        }
   224→
   225→        var rates: [String: Double] = [:]
   226→        rates["selicTarget"] = viewModel.selicTarget?.numericValue ?? 0
   227→        rates["selicDaily"] = viewModel.selicDaily?.numericValue ?? 0
   228→        rates["cdi"] = viewModel.cdi?.numericValue ?? 0
   229→        rates["ipcaMonthly"] = viewModel.ipcaMonthly?.numericValue ?? 0
   230→        rates["ipca12m"] = viewModel.ipca12m?.numericValue ?? 0
   231→        export["rates"] = rates
   232→
   233→        if let selicExp = viewModel.focusStats.latestSelic {
   234→            export["focusExpectations"] = [
   235→                "selicExpected": selicExp.median,
   236→                "selicMeeting": selicExp.meeting
   237→            ]
   238→        }
   239→
   240→        if let jsonData = try? JSONSerialization.data(withJSONObject: export, options: .prettyPrinted),
   241→           let jsonString = String(data: jsonData, encoding: .utf8) {
   242→            return jsonString
   243→        }
   244→        return "{}"
   245→    }
   246→
   247→    private func generateCSVExport() -> String {
   248→        var csv = "Indicador,Valor,Data\n"
   249→
   250→        if let dollar = viewModel.dollarQuote {
   251→            csv += "Dólar (Compra),\(dollar.buyRate),\(dollar.formattedDate)\n"
   252→            csv += "Dólar (Venda),\(dollar.sellRate),\(dollar.formattedDate)\n"
   253→        }
   254→
   255→        if let euro = viewModel.euroQuote {
   256→            csv += "Euro (Compra),\(euro.buyRate),\(euro.formattedDate)\n"
   257→            csv += "Euro (Venda),\(euro.sellRate),\(euro.formattedDate)\n"
   258→        }
   259→
   260→        if let selic = viewModel.selicTarget {
   261→            csv += "SELIC Meta,\(selic.numericValue),\(selic.date)\n"
   262→        }
   263→
   264→        if let cdi = viewModel.cdi {
   265→            csv += "CDI,\(cdi.numericValue),\(cdi.date)\n"
   266→        }
   267→
   268→        if let ipca = viewModel.ipca12m {
   269→            csv += "IPCA 12m,\(ipca.numericValue),\(ipca.date)\n"
   270→        }
   271→
   272→        return csv
   273→    }
   274→
   275→    private func copyToClipboard() {
   276→        var summary = "📊 BCB Dashboard - \(Date().toFullBRString())\n\n"
   277→
   278→        if let dollar = viewModel.dollarQuote {
   279→            summary += "💵 Dólar: \(dollar.sellRate.toBRL())\n"
   280→        }
   281→
   282→        if let euro = viewModel.euroQuote {
   283→            summary += "💶 Euro: \(euro.sellRate.toBRL())\n"
   284→        }
   285→
   286→        if let selic = viewModel.selicTarget {
   287→            summary += "📈 SELIC: \(String(format: "%.2f%%", selic.numericValue))\n"
   288→        }
   289→
   290→        if let ipca = viewModel.ipca12m {
   291→            summary += "📉 IPCA 12m: \(String(format: "%.2f%%", ipca.numericValue))\n"
   292→        }
   293→
   294→        summary += "\nFonte: Banco Central do Brasil"
   295→
   296→        NSPasteboard.general.clearContents()
   297→        NSPasteboard.general.setString(summary, forType: .string)
   298→    }
   299→}
   300→
   301→enum ExportFormat: String {
   302→    case json
   303→    case csv
   304→}
   305→
   306→// MARK: - Quick Value Pill
   307→
   308→struct QuickValuePill: View {
   309→    let label: String
   310→    let value: String
   311→    let color: Color
   312→
   313→    var body: some View {
   314→        HStack(spacing: 4) {
   315→            Text(label)
   316→                .font(.caption2)
   317→                .foregroundStyle(.secondary)
   318→
   319→            Text(value)
   320→                .font(.caption)
   321→                .fontWeight(.semibold)
   322→                .foregroundStyle(color)
   323→        }
   324→        .padding(.horizontal, 8)
   325→        .padding(.vertical, 4)
   326→        .background(color.opacity(0.1))
   327→        .clipShape(Capsule())
   328→    }
   329→}
   330→
   331→// MARK: - Welcome View
   332→
   333→struct WelcomeView: View {
   334→    var body: some View {
   335→        VStack(spacing: 20) {
   336→            Image(systemName: "building.columns.fill")
   337→                .font(.system(size: 64))
   338→                .foregroundStyle(Color.bcbBlue)
   339→
   340→            Text("BCB Dashboard")
   341→                .font(.largeTitle)
   342→                .fontWeight(.bold)
   343→
   344→            Text("Selecione um item no menu lateral")
   345→                .foregroundStyle(.secondary)
   346→        }
   347→    }
   348→}
   349→
   350→// MARK: - Sidebar View
   351→
   352→struct SidebarView: View {
   353→    @Binding var selectedItem: NavigationItem?
   354→    @EnvironmentObject var viewModel: DashboardViewModel
   355→
   356→    var body: some View {
   357→        List(selection: $selectedItem) {
   358→            Section("Overview") {
   359→                NavigationLink(value: NavigationItem.dashboard) {
   360→                    SidebarRow(
   361→                        icon: "square.grid.2x2",
   362→                        title: "Dashboard",
   363→                        color: .bcbBlue,
   364→                        badge: nil
   365→                    )
   366→                }
   367→            }
   368→
   369→            Section("Mercado") {
   370→                NavigationLink(value: NavigationItem.currency) {
   371→                    SidebarRow(
   372→                        icon: "dollarsign.circle",
   373→                        title: "Câmbio",
   374→                        color: .bcbGreen,
   375→                        badge: viewModel.dollarQuote?.sellRate.toBRL()
   376→                    )
   377→                }
   378→
   379→                NavigationLink(value: NavigationItem.rates) {
   380→                    SidebarRow(
   381→                        icon: "percent",
   382→                        title: "Taxas",
   383→                        color: .bcbPurple,
   384→                        badge: viewModel.selicTarget.map { String(format: "%.1f%%", $0.numericValue) }
   385→                    )
   386→                }
   387→            }
   388→
   389→            Section("Análise") {
   390→                NavigationLink(value: NavigationItem.expectations) {
   391→                    SidebarRow(
   392→                        icon: "chart.line.uptrend.xyaxis",
   393→                        title: "Focus",
   394→                        color: .bcbYellow,
   395→                        badge: viewModel.focusStats.latestSelic.map { String(format: "%.1f%%", $0.median) }
   396→                    )
   397→                }
   398→
   399→                NavigationLink(value: NavigationItem.pix) {
   400→                    SidebarRow(
   401→                        icon: "qrcode",
   402→                        title: "PIX",
   403→                        color: .green,
   404→                        badge: viewModel.pixStats.latestDaily.map { "\($0.quantity / 1_000_000)M" }
   405→                    )
   406→                }
   407→            }
   408→
   409→            Section("Referência") {
   410→                NavigationLink(value: NavigationItem.institutions) {
   411→                    SidebarRow(
   412→                        icon: "building.columns",
   413→                        title: "Instituições",
   414→                        color: .bcbPink,
   415→                        badge: viewModel.banks.isEmpty ? nil : "\(viewModel.banks.count + viewModel.cooperatives.count)"
   416→                    )
   417→                }
   418→            }
   419→
   420→            Section {
   421→                // Status Footer
   422→                VStack(alignment: .leading, spacing: 8) {
   423→                    if let lastUpdate = viewModel.lastUpdate {
   424→                        HStack {
   425→                            Image(systemName: "clock")
   426→                                .font(.caption2)
   427→                            Text(lastUpdate.toRelativeString())
   428→                                .font(.caption2)
   429→                        }
   430→                        .foregroundStyle(.secondary)
   431→                    }
   432→
   433→                    if viewModel.isLoading {
   434→                        HStack {
   435→                            ProgressView()
   436→                                .controlSize(.mini)
   437→                            Text("Atualizando...")
   438→                                .font(.caption2)
   439→                        }
   440→                        .foregroundStyle(.secondary)
   441→                    }
   442→                }
   443→                .padding(.vertical, 4)
   444→            }
   445→        }
   446→        .listStyle(.sidebar)
   447→        .navigationTitle("BCB")
   448→        .frame(minWidth: 220)
   449→    }
   450→}
   451→
   452→struct SidebarRow: View {
   453→    let icon: String
   454→    let title: String
   455→    let color: Color
   456→    let badge: String?
   457→
   458→    var body: some View {
   459→        HStack {
   460→            Image(systemName: icon)
   461→                .foregroundStyle(color)
   462→                .frame(width: 24)
   463→
   464→            Text(title)
   465→
   466→            Spacer()
   467→
   468→            if let badge = badge {
   469→                Text(badge)
   470→                    .font(.caption2)
   471→                    .fontWeight(.medium)
   472→                    .foregroundStyle(color)
   473→                    .padding(.horizontal, 6)
   474→                    .padding(.vertical, 2)
   475→                    .background(color.opacity(0.15))
   476→                    .clipShape(Capsule())
   477→            }
   478→        }
   479→    }
   480→}
   481→
   482→// MARK: - Date Extension
   483→
   484→extension Date {
   485→    func toRelativeString() -> String {
   486→        let formatter = RelativeDateTimeFormatter()
   487→        formatter.unitsStyle = .abbreviated
   488→        formatter.locale = Locale(identifier: "pt_BR")
   489→        return formatter.localizedString(for: self, relativeTo: Date())
   490→    }
   491→
   492→    func toFilenameDateString() -> String {
   493→        let formatter = DateFormatter()
   494→        formatter.dateFormat = "yyyy-MM-dd-HHmmss"
   495→        return formatter.string(from: self)
   496→    }
   497→}
   498→
   499→#Preview {
   500→    ContentView()
   501→        .environmentObject(DashboardViewModel())
   502→}
   503→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>