stats

Gas Man/Stats/DistanceBetweenFillupsTrendChartView.swift

@@ -0,0 +1,64 @@
+//
+//  DistanceBetweenFillupsTrendChartView.swift
+//  Gas Man
+//
+//  Created by Kameron Kenny on 3/19/25.
+//
+
+
+import SwiftUI
+import Charts
+import CoreData
+
+struct DistanceBetweenFillupsTrendChartView: View {
+    let fuelLogs: [FuelLog]
+    
+    // Compute trend data by sorting logs by date ascending,
+    // then mapping each log's date and pricePerGalon.
+    var trendData: [(date: Date, distance: Double)] {
+        let sortedLogs = fuelLogs.sorted { ($0.date ?? Date()) < ($1.date ?? Date()) }
+        var data: [(Date, Double)] = []
+        // Start from index 1 because we need a previous log to compute the difference.
+        for i in 1..<sortedLogs.count {
+            let previous = sortedLogs[i - 1]
+            let current = sortedLogs[i]
+            if let date = current.date,
+               current.odometer > previous.odometer,
+               current.fuelVolume > 0 {
+                let distance = (current.odometer - previous.odometer)
+                data.append((date, distance))
+            }
+        }
+        return data
+    }
+    
+    var body: some View {
+        VStack {
+            if trendData.isEmpty {
+                Text("No trend data available.")
+                    .foregroundColor(.secondary)
+            } else {
+                Chart {
+                    ForEach(trendData, id: \.date) { point in
+                        LineMark(
+                            x: .value("Date", point.date),
+                            y: .value("Distance", point.distance)
+                        )
+                        PointMark(
+                            x: .value("Date", point.date),
+                            y: .value("Price", point.distance)
+                        )
+                    }
+                }
+                .chartXAxis {
+                    AxisMarks(values: .automatic(desiredCount: 4))
+                }
+                .chartYAxis {
+                    AxisMarks(values: .automatic(desiredCount: 5))
+                }
+            }
+        }
+        .padding()
+        .navigationTitle("Distance Between Fuel-ups Trend")
+    }
+}

Gas Man/Stats/GalPerFuelUpTrendChartView.swift

@@ -0,0 +1,58 @@
+//
+//  GalPerFuelUpTrendChartView.swift
+//  Gas Man
+//
+//  Created by Kameron Kenny on 3/19/25.
+//
+
+
+import SwiftUI
+import Charts
+import CoreData
+
+struct GalPerFuelUpTrendChartView: View {
+    let fuelLogs: [FuelLog]
+    
+    // Compute trend data by sorting logs by date ascending,
+    // then mapping each log's date and pricePerGalon.
+    var trendData: [(date: Date, gal: Double)] {
+        let sortedLogs = fuelLogs.sorted { ($0.date ?? Date()) < ($1.date ?? Date()) }
+        return sortedLogs.compactMap { log in
+            if let date = log.date {
+                return (date, log.fuelVolume)
+            } else {
+                return nil
+            }
+        }
+    }
+    
+    var body: some View {
+        VStack {
+            if trendData.isEmpty {
+                Text("No trend data available.")
+                    .foregroundColor(.secondary)
+            } else {
+                Chart {
+                    ForEach(trendData, id: \.date) { point in
+                        LineMark(
+                            x: .value("Date", point.date),
+                            y: .value("Price", point.gal)
+                        )
+                        PointMark(
+                            x: .value("Date", point.date),
+                            y: .value("Price", point.gal)
+                        )
+                    }
+                }
+                .chartXAxis {
+                    AxisMarks(values: .automatic(desiredCount: 4))
+                }
+                .chartYAxis {
+                    AxisMarks(values: .automatic(desiredCount: 5))
+                }
+            }
+        }
+        .padding()
+        .navigationTitle("Fuel Volume Trend")
+    }
+}

Gas Man/Stats/PricePerGallonTrendChartView.swift

@@ -0,0 +1,58 @@
+//
+//  PriceTrendChartView.swift
+//  Gas Man
+//
+//  Created by Kameron Kenny on 3/19/25.
+//
+
+
+import SwiftUI
+import Charts
+import CoreData
+
+struct PricePerGallonTrendChartView: View {
+    let fuelLogs: [FuelLog]
+    
+    // Compute trend data by sorting logs by date ascending,
+    // then mapping each log's date and pricePerGalon.
+    var trendData: [(date: Date, price: Double)] {
+        let sortedLogs = fuelLogs.sorted { ($0.date ?? Date()) < ($1.date ?? Date()) }
+        return sortedLogs.compactMap { log in
+            if let date = log.date {
+                return (date, log.pricePerGalon)
+            } else {
+                return nil
+            }
+        }
+    }
+    
+    var body: some View {
+        VStack {
+            if trendData.isEmpty {
+                Text("No price trend data available.")
+                    .foregroundColor(.secondary)
+            } else {
+                Chart {
+                    ForEach(trendData, id: \.date) { point in
+                        LineMark(
+                            x: .value("Date", point.date),
+                            y: .value("Price", point.price)
+                        )
+                        PointMark(
+                            x: .value("Date", point.date),
+                            y: .value("Price", point.price)
+                        )
+                    }
+                }
+                .chartXAxis {
+                    AxisMarks(values: .automatic(desiredCount: 4))
+                }
+                .chartYAxis {
+                    AxisMarks(values: .automatic(desiredCount: 5))
+                }
+            }
+        }
+        .padding()
+        .navigationTitle("Price/Gallon Trend")
+    }
+}

Gas Man/Stats/StatsView.swift

@@ -172,6 +172,14 @@ struct StatsView: View {
                             Text("N/A")
                         }
                     }
+                    NavigationLink(destination: PricePerGallonTrendChartView(fuelLogs: filteredFuelLogs)) {
+                        HStack {
+                            Text("Trends:")
+                            Spacer()
+                            Image(systemName: "chart.bar.fill")
+                                .foregroundColor(.blue)
+                        }
+                    }
                 }
                 
                 // Distance Between Fill-Ups Stats
@@ -204,6 +212,14 @@ struct StatsView: View {
                             Text("N/A")
                         }
                     }
+                    NavigationLink(destination: DistanceBetweenFillupsTrendChartView(fuelLogs: filteredFuelLogs)) {
+                        HStack {
+                            Text("Trends:")
+                            Spacer()
+                            Image(systemName: "chart.bar.fill")
+                                .foregroundColor(.blue)
+                        }
+                    }
                 }
                 
                 // Gallons per Fill-Up Stats
@@ -236,6 +252,14 @@ struct StatsView: View {
                             Text("N/A")
                         }
                     }
+                    NavigationLink(destination: GalPerFuelUpTrendChartView(fuelLogs: filteredFuelLogs)) {
+                        HStack {
+                            Text("Trends:")
+                            Spacer()
+                            Image(systemName: "chart.bar.fill")
+                                .foregroundColor(.blue)
+                        }
+                    }
                 }
             }
             .navigationTitle("Stats")