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| 1 | +import SwiftUI |
| 2 | +import Charts |
| 3 | + |
| 4 | +struct ChartCard: View { |
| 5 | + let metrics: [SiteMetric] |
| 6 | + let dateRange: StatsDateRange |
| 7 | + |
| 8 | + @StateObject private var viewModel: ChartCardViewModel |
| 9 | + |
| 10 | + @State private var selectedMetric: SiteMetric |
| 11 | + @State private var selectedChartType: ChartType = .line |
| 12 | + @State private var isShowingRawData = false |
| 13 | + |
| 14 | + @ScaledMetric(relativeTo: .body) private var chartHeight = 180 |
| 15 | + |
| 16 | + init(metrics: [SiteMetric], dateRange: StatsDateRange, service: any StatsServiceProtocol) { |
| 17 | + self.metrics = metrics |
| 18 | + self.dateRange = dateRange |
| 19 | + |
| 20 | + assert(metrics.count > 0) |
| 21 | + self._selectedMetric = .init(initialValue: metrics.first ?? .views) |
| 22 | + |
| 23 | + let viewModel = ChartCardViewModel(metrics: metrics, service: service) |
| 24 | + self._viewModel = StateObject(wrappedValue: viewModel) |
| 25 | + |
| 26 | + viewModel.loadData(for: dateRange) |
| 27 | + } |
| 28 | + |
| 29 | + var body: some View { |
| 30 | + VStack(spacing: 0) { |
| 31 | + VStack(spacing: 6) { |
| 32 | + headerView(for: selectedMetric) |
| 33 | + .unredacted() |
| 34 | + contentView |
| 35 | + } |
| 36 | + .padding(Constants.step2) |
| 37 | + |
| 38 | + if metrics.count > 1 { |
| 39 | + Divider() |
| 40 | + footerView |
| 41 | + } |
| 42 | + } |
| 43 | + .redacted(reason: viewModel.isFirstLoad ? .placeholder : []) |
| 44 | + .overlay(alignment: .topTrailing) { |
| 45 | + moreMenu |
| 46 | + } |
| 47 | + .grayscale(viewModel.isStale ? 1 : 0) |
| 48 | + .animation(.smooth, value: viewModel.isStale) |
| 49 | + .onChange(of: dateRange) { newRange in |
| 50 | + viewModel.loadData(for: newRange) |
| 51 | + } |
| 52 | + } |
| 53 | + |
| 54 | + private func headerView(for metric: SiteMetric) -> some View { |
| 55 | + HStack { |
| 56 | + StatsCardTitleView(title: metric.localizedTitle, showChevron: false) |
| 57 | + Spacer(minLength: 44) |
| 58 | + } |
| 59 | + } |
| 60 | + |
| 61 | + @ViewBuilder |
| 62 | + private var contentView: some View { |
| 63 | + Group { |
| 64 | + if viewModel.isFirstLoad { |
| 65 | + mainChartView(metric: selectedMetric, data: mockChartData) |
| 66 | + } else if let chartData = viewModel.chartData[selectedMetric] { |
| 67 | + mainChartView(metric: selectedMetric, data: chartData) |
| 68 | + } else if let error = viewModel.loadingError { |
| 69 | + mainChartView(metric: selectedMetric, data: mockChartData) |
| 70 | + .redacted(reason: .placeholder) |
| 71 | + .grayscale(1) |
| 72 | + .opacity(0.66) |
| 73 | + .overlay { |
| 74 | + SimpleErrorView(error: error) |
| 75 | + .background(Color(.systemBackground).opacity(0.9)) |
| 76 | + .padding(-2) // Wasn't covering the chart well |
| 77 | + } |
| 78 | + } |
| 79 | + } |
| 80 | + .animation(.spring, value: selectedMetric) |
| 81 | + .animation(.spring, value: selectedChartType) |
| 82 | + } |
| 83 | + |
| 84 | + private var footerView: some View { |
| 85 | + MetricsOverviewTabView( |
| 86 | + data: viewModel.isFirstLoad ? viewModel.placeholderTabViewData : viewModel.tabViewData, |
| 87 | + selectedMetric: $selectedMetric |
| 88 | + ) |
| 89 | + } |
| 90 | + |
| 91 | + private var mockChartData: ChartData { |
| 92 | + ChartData.mock(metric: .views, granularity: dateRange.dateInterval.preferredGranularity, range: dateRange) |
| 93 | + } |
| 94 | + |
| 95 | + // MARK: - Header View |
| 96 | + |
| 97 | + private var moreMenu: some View { |
| 98 | + Menu { |
| 99 | + moreMenuContent |
| 100 | + } label: { |
| 101 | + Image(systemName: "ellipsis") |
| 102 | + .font(.body) |
| 103 | + .foregroundColor(.secondary) |
| 104 | + .frame(width: 50, height: 50) |
| 105 | + } |
| 106 | + .tint(Color.primary) |
| 107 | + .sheet(isPresented: $isShowingRawData) { |
| 108 | + NavigationStack { |
| 109 | + ChartDataListView( |
| 110 | + chartDataDict: viewModel.chartData, |
| 111 | + selectedMetric: selectedMetric, |
| 112 | + dateRanges: dateRange |
| 113 | + ) |
| 114 | + } |
| 115 | + } |
| 116 | + } |
| 117 | + |
| 118 | + @ViewBuilder |
| 119 | + private var moreMenuContent: some View { |
| 120 | + Section { |
| 121 | + ControlGroup { |
| 122 | + ForEach(ChartType.allCases, id: \.self) { type in |
| 123 | + Button { |
| 124 | + selectedChartType = type |
| 125 | + } label: { |
| 126 | + Label(type.localizedTitle, systemImage: type.systemImage) |
| 127 | + } |
| 128 | + } |
| 129 | + } |
| 130 | + } |
| 131 | + Section { |
| 132 | + Button { |
| 133 | + // Not implemented |
| 134 | + } label: { |
| 135 | + Label(Strings.Buttons.share, systemImage: "square.and.arrow.up") |
| 136 | + } |
| 137 | + Button { |
| 138 | + isShowingRawData = true |
| 139 | + } label: { |
| 140 | + Label(Strings.Chart.showData, systemImage: "tablecells") |
| 141 | + } |
| 142 | + } |
| 143 | + } |
| 144 | + |
| 145 | + // MARK: - Chart View |
| 146 | + |
| 147 | + @ViewBuilder |
| 148 | + private func mainChartView(metric: SiteMetric, data: ChartData) -> some View { |
| 149 | + VStack(alignment: .leading, spacing: 8) { |
| 150 | + // Showing currently selected (not loaded period) by design |
| 151 | + ChartLegendView( |
| 152 | + metric: metric, |
| 153 | + currentPeriod: dateRange.dateInterval, |
| 154 | + previousPeriod: dateRange.effectiveComparisonInterval |
| 155 | + ) |
| 156 | + .unredacted() |
| 157 | + .padding(.bottom, 6) |
| 158 | + .padding(.trailing, 20) |
| 159 | + |
| 160 | + ChartValuesSummaryView( |
| 161 | + trend: TrendViewModel.make(data, context: .regular), |
| 162 | + style: metrics.count > 1 ? .compact : .standard |
| 163 | + ) |
| 164 | + |
| 165 | + chartContentView(data: data) |
| 166 | + .frame(height: chartHeight) |
| 167 | + .opacity(viewModel.isFirstLoad ? 0.33 : 1) |
| 168 | + .transition(.push(from: .trailing).combined(with: .opacity).combined(with: .scale)) |
| 169 | + } |
| 170 | + } |
| 171 | + |
| 172 | + @ViewBuilder |
| 173 | + private func chartContentView(data: ChartData) -> some View { |
| 174 | + switch selectedChartType { |
| 175 | + case .line: |
| 176 | + LineChartView(data: data) |
| 177 | + case .columns: |
| 178 | + BarChartView(data: data) |
| 179 | + } |
| 180 | + } |
| 181 | +} |
| 182 | + |
| 183 | +private enum ChartType: String, CaseIterable { |
| 184 | + case line |
| 185 | + case columns |
| 186 | + |
| 187 | + var localizedTitle: String { |
| 188 | + switch self { |
| 189 | + case .line: Strings.Chart.lineChart |
| 190 | + case .columns: Strings.Chart.barChart |
| 191 | + } |
| 192 | + } |
| 193 | + |
| 194 | + var systemImage: String { |
| 195 | + switch self { |
| 196 | + case .line: "chart.line.uptrend.xyaxis" |
| 197 | + case .columns: "chart.bar" |
| 198 | + } |
| 199 | + } |
| 200 | +} |
| 201 | + |
| 202 | +// MARK: - Preview |
| 203 | + |
| 204 | +#Preview { |
| 205 | + ScrollView { |
| 206 | + VStack(spacing: 20) { |
| 207 | + ChartCard( |
| 208 | + metrics: [.views, .visitors, .likes, .comments], |
| 209 | + dateRange: Calendar.demo.makeDateRange(for: .last7Days), |
| 210 | + service: MockStatsService() |
| 211 | + ) |
| 212 | + .cardStyle() |
| 213 | + |
| 214 | + ChartCard( |
| 215 | + metrics: [.timeOnSite, .bounceRate], |
| 216 | + dateRange: Calendar.demo.makeDateRange(for: .last30Days), |
| 217 | + service: MockStatsService() |
| 218 | + ) |
| 219 | + .cardStyle() |
| 220 | + } |
| 221 | + .padding(.vertical) |
| 222 | + } |
| 223 | + .background(Color(.systemGroupedBackground)) |
| 224 | +} |
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