# Polish Enhancements Design

**Date:** 2026-01-12
**Status:** Draft
**Scope:** High-level overview for scoping/prioritization

## Goal

Quick-win improvements for trip browsing and home screen engagement.

## Features

1. **Grouped sorting in trip options** - When sorting by "Most Cities", group results into sections (12 cities, 11 cities...)
2. **100+ planning tips** - Expand from 3 hardcoded tips to 100+, randomly show 3

## Current State

- `TripOptionsView` has sort picker (Most Cities, Most Games, etc.) but results are a flat list
- `HomeView.tipsSection` shows 3 hardcoded `TipRow` items

## Feature Details

### 1. Grouped Sorting in Trip Options

When user selects a sort option (except "Recommended"), group results into sections:

| Sort Option | Section Headers | Example |
|-------------|-----------------|---------|
| Most Cities | By count descending | "12 cities", "11 cities", "10 cities"... |
| Most Games | By count descending | "8 games", "7 games", "6 games"... |
| Least Games | By count ascending | "1 game", "2 games", "3 games"... |
| Most Miles | By range descending | "2000+ mi", "1500-2000 mi", "1000-1500 mi"... |
| Least Miles | By range ascending | "0-500 mi", "500-1000 mi"... |
| Best Efficiency | No grouping | Continuous metric, flat list |
| Recommended | No grouping | Default sort, flat list |

**Implementation:**

```swift
// In TripOptionsView
private var groupedOptions: [(header: String, options: [ItineraryOption])] {
    switch sortOption {
    case .recommended, .bestEfficiency:
        return [("", filteredAndSortedOptions)] // Flat list, no header

    case .mostCities:
        return Dictionary(grouping: filteredAndSortedOptions) { uniqueCityCount(for: $0) }
            .sorted { $0.key > $1.key } // Descending
            .map { ("\($0.key) \($0.key == 1 ? "city" : "cities")", $0.value) }

    case .mostGames:
        return Dictionary(grouping: filteredAndSortedOptions) { $0.totalGames }
            .sorted { $0.key > $1.key }
            .map { ("\($0.key) \($0.key == 1 ? "game" : "games")", $0.value) }

    case .leastGames:
        return Dictionary(grouping: filteredAndSortedOptions) { $0.totalGames }
            .sorted { $0.key < $1.key } // Ascending
            .map { ("\($0.key) \($0.key == 1 ? "game" : "games")", $0.value) }

    case .mostMiles, .leastMiles:
        return groupByMileageRange(ascending: sortOption == .leastMiles)
    }
}

private func groupByMileageRange(ascending: Bool) -> [(String, [ItineraryOption])] {
    let ranges = [(0, 500), (500, 1000), (1000, 1500), (1500, 2000), (2000, Int.max)]
    // Group and format as "0-500 mi", "500-1000 mi", "2000+ mi"
}
```

**UI:**
- Section headers are sticky (standard iOS List behavior)
- Styled like date headers in Messages app
- Empty sections hidden after filtering

### 2. Planning Tips (100+)

**New Data File:** `Core/Data/PlanningTips.swift`

```swift
struct PlanningTip: Identifiable {
    let id = UUID()
    let icon: String
    let title: String
    let subtitle: String
}

enum PlanningTips {
    static let all: [PlanningTip] = [
        // Schedule timing (~15 tips)
        PlanningTip(icon: "calendar.badge.clock", title: "Check schedules early", subtitle: "Game times can change, sync often"),
        PlanningTip(icon: "clock.badge.exclamationmark", title: "Watch for doubleheaders", subtitle: "Two games, one day—great value!"),

        // Driving/route tips (~15 tips)
        PlanningTip(icon: "car.fill", title: "Plan rest days", subtitle: "Don't overdo the driving"),
        PlanningTip(icon: "fuelpump.fill", title: "Map gas stations", subtitle: "Some stretches are remote"),

        // Stadium-specific (~15 tips)
        PlanningTip(icon: "star.fill", title: "Mark must-sees", subtitle: "Ensure your favorite matchups are included"),
        PlanningTip(icon: "fork.knife", title: "Research stadium food", subtitle: "Some parks have legendary eats"),

        // Budget tips (~15 tips)
        PlanningTip(icon: "dollarsign.circle", title: "Book hotels early", subtitle: "Game days fill up fast"),

        // Multi-sport strategies (~15 tips)
        PlanningTip(icon: "sportscourt.fill", title: "Mix sports", subtitle: "NBA + NHL share many cities"),

        // Regional tips (~15 tips)
        PlanningTip(icon: "cloud.sun.fill", title: "Check the weather", subtitle: "April baseball can be chilly"),

        // Game day tips (~15 tips)
        PlanningTip(icon: "figure.walk", title: "Arrive early", subtitle: "Explore the stadium before first pitch"),

        // ... 90+ more tips
    ]

    static func random(_ count: Int = 3) -> [PlanningTip] {
        Array(all.shuffled().prefix(count))
    }
}
```

**Tip Categories (aim for ~15 each):**
- Schedule timing (rain delays, doubleheaders, TV schedules)
- Driving/route tips (rest stops, fuel, traffic)
- Stadium-specific advice (food, parking, views)
- Budget tips (hotels, tickets, timing)
- Multi-sport strategies (shared cities, season overlaps)
- Regional tips (weather, local events, traffic patterns)
- Game day tips (arrival, gear, photos)

**HomeView Integration:**

```swift
struct HomeView: View {
    @State private var displayedTips: [PlanningTip] = []

    var body: some View {
        // ...
        tipsSection
        // ...
    }

    private var tipsSection: some View {
        ThemedSection(title: "Planning Tips") {
            ForEach(displayedTips) { tip in
                TipRow(icon: tip.icon, title: tip.title, subtitle: tip.subtitle)
            }
        }
        .onAppear {
            if displayedTips.isEmpty {
                displayedTips = PlanningTips.random(3)
            }
        }
    }
}
```

**Refresh Behavior:** Tips refresh on app launch only (not on tab switch).

## File Structure

```
Core/Data/
└── PlanningTips.swift              # NEW - 100+ tips data

Features/Trip/Views/
└── TripCreationView.swift          # MODIFY - TripOptionsView grouped sections

Features/Home/Views/
└── HomeView.swift                  # MODIFY - use PlanningTips.random(3)
```

## Key Decisions

| Decision | Choice | Rationale |
|----------|--------|-----------|
| Tips refresh timing | On app launch only | Avoid jarring changes during session |
| Section collapse | No | Always expanded, just visual grouping |
| Empty sections | Hide them | Don't show "0 games" section |
| Tip storage | Hardcoded array | Simple, no CloudKit overhead |
| Tips count | Show 3 | Enough variety without overwhelming |

## Not Included (YAGNI)

- Tip categories/filtering in UI
- "See more tips" expansion
- Tip favoriting/bookmarking
- CloudKit-synced tips
- Localized tips (English only for now)

## Dependencies

- None

## Testing Considerations

- Test grouped sorting with various trip counts and distributions
- Test edge cases: all trips have same city count, only 1 trip
- Test tips randomization produces different results on relaunch
- Test section headers are sticky while scrolling
