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FitTrack App - Complete File Checklist

Use this checklist when setting up the project to ensure all files are created.

📁 Project Structure

FitTrackApp/
├── 📄 FitTrackApp.swift
├── 📄 ContentView.swift
├── 📁 Models/
│   ├── 📁 CoreData/
│   │   ├── 📄 PersistenceController.swift
│   │   ├── 📄 FitTrackModel.xcdatamodeld (created in Xcode)
│   │   └── 📄 CoreDataModel.md (instructions)
│   └── 📁 DTOs/
│       ├── 📄 FoodSearchResult.swift
│       └── 📄 NutritionInfo.swift
├── 📁 ViewModels/
│   ├── 📄 WeightViewModel.swift
│   ├── 📄 WorkoutViewModel.swift
│   └── 📄 DietViewModel.swift
├── 📁 Views/
│   ├── 📁 Weight/
│   │   ├── 📄 WeightTrackingView.swift
│   │   └── 📄 WeightChartView.swift
│   ├── 📁 Workout/
│   │   ├── 📄 WorkoutListView.swift
│   │   ├── 📄 AddWorkoutView.swift
│   │   └── 📄 ExerciseProgressView.swift
│   └── 📁 Diet/
│       ├── 📄 DietTrackingView.swift
│       ├── 📄 FoodSearchView.swift
│       └── 📄 AddFoodView.swift
├── 📁 Services/
│   └── 📄 USDAFoodService.swift
├── 📁 Utilities/
│   ├── 📄 DateExtensions.swift
│   └── 📄 Constants.swift
└── 📁 Documentation/
    ├── 📄 README.md
    ├── 📄 QUICKSTART.md
    ├── 📄 SETUP_INSTRUCTIONS.md
    ├── 📄 TECHNICAL_DOCUMENTATION.md
    ├── 📄 PROJECT_SUMMARY.md
    └── 📄 FILE_CHECKLIST.md (this file)

✅ File Creation Checklist

Root Level Files (2)

  • FitTrackApp.swift - App entry point
  • ContentView.swift - Main tab view

Models Folder (5 files)

CoreData Subfolder (2 + 1 special)

  • PersistenceController.swift - Core Data stack manager
  • CoreDataModel.md - Instructions for creating data model
  • FitTrackModel.xcdatamodeld - Create in Xcode (not a text file)

DTOs Subfolder (2)

  • FoodSearchResult.swift - USDA API response models
  • NutritionInfo.swift - Nutrition helper structures

ViewModels Folder (3 files)

  • WeightViewModel.swift - Weight tracking business logic
  • WorkoutViewModel.swift - Workout tracking business logic
  • DietViewModel.swift - Diet tracking business logic

Views Folder (10 files)

Weight Subfolder (2)

  • WeightTrackingView.swift - Main weight tracking screen
  • WeightChartView.swift - Weight progress chart

Workout Subfolder (3)

  • WorkoutListView.swift - Workout history list
  • AddWorkoutView.swift - Add new workout form
  • ExerciseProgressView.swift - Exercise progress charts

Diet Subfolder (3)

  • DietTrackingView.swift - Main nutrition screen
  • FoodSearchView.swift - USDA food search
  • AddFoodView.swift - Add food to log

Services Folder (1 file)

  • USDAFoodService.swift - USDA API integration

Utilities Folder (2 files)

  • DateExtensions.swift - Date helper functions
  • Constants.swift - App-wide constants

Documentation Files (6 files)

  • README.md - Project overview
  • QUICKSTART.md - 10-minute setup guide
  • SETUP_INSTRUCTIONS.md - Detailed setup instructions
  • TECHNICAL_DOCUMENTATION.md - Architecture documentation
  • PROJECT_SUMMARY.md - Project summary
  • FILE_CHECKLIST.md - This file

📊 File Count Summary

Category Count
App Files 2
Model Files 4
ViewModel Files 3
View Files 10
Service Files 1
Utility Files 2
Documentation 6
Total Swift Files 22
Total Documentation 6
Grand Total 28

Plus: 1 Core Data model file (.xcdatamodeld) created in Xcode

🔍 File Size Reference

File Approx Lines Complexity
FitTrackApp.swift 60 ⭐ Simple
ContentView.swift 60 ⭐ Simple
PersistenceController.swift 150 ⭐⭐ Medium
FoodSearchResult.swift 180 ⭐⭐ Medium
NutritionInfo.swift 200 ⭐⭐ Medium
WeightViewModel.swift 280 ⭐⭐⭐ Complex
WorkoutViewModel.swift 320 ⭐⭐⭐ Complex
DietViewModel.swift 350 ⭐⭐⭐ Complex
WeightTrackingView.swift 280 ⭐⭐⭐ Complex
WeightChartView.swift 130 ⭐⭐ Medium
WorkoutListView.swift 280 ⭐⭐⭐ Complex
AddWorkoutView.swift 270 ⭐⭐⭐ Complex
ExerciseProgressView.swift 180 ⭐⭐ Medium
DietTrackingView.swift 330 ⭐⭐⭐ Complex
FoodSearchView.swift 180 ⭐⭐ Medium
AddFoodView.swift 270 ⭐⭐⭐ Complex
USDAFoodService.swift 200 ⭐⭐ Medium
DateExtensions.swift 220 ⭐⭐ Medium
Constants.swift 280 ⭐⭐ Medium

Total Code: ~3,500 lines

📝 Setup Order

Follow this order when creating files:

Phase 1: Foundation (Create First)

  1. ✅ Create project in Xcode
  2. ✅ Create folder structure
  3. ✅ Add Constants.swift
  4. ✅ Add DateExtensions.swift

Phase 2: Data Layer

  1. ✅ Add PersistenceController.swift
  2. ✅ Create FitTrackModel.xcdatamodeld in Xcode
  3. ✅ Add FoodSearchResult.swift
  4. ✅ Add NutritionInfo.swift

Phase 3: Services

  1. ✅ Add USDAFoodService.swift

Phase 4: ViewModels

  1. ✅ Add WeightViewModel.swift
  2. ✅ Add WorkoutViewModel.swift
  3. ✅ Add DietViewModel.swift

Phase 5: Views

  1. ✅ Add Weight views (2 files)
  2. ✅ Add Workout views (3 files)
  3. ✅ Add Diet views (3 files)

Phase 6: App Structure

  1. ✅ Replace FitTrackApp.swift
  2. ✅ Replace ContentView.swift

Phase 7: Build & Test

  1. ✅ Build project (⌘B)
  2. ✅ Fix any errors
  3. ✅ Run app (⌘R)

🎯 Quick Verification

After adding all files, verify:

File Count Check

# In project directory
find . -name "*.swift" | wc -l
# Should show: 22

Folder Structure Check

  • Models folder exists with CoreData and DTOs subfolders
  • ViewModels folder exists with 3 files
  • Views folder exists with Weight, Workout, Diet subfolders
  • Services folder exists with 1 file
  • Utilities folder exists with 2 files

Build Check

  • Project builds without errors (⌘B)
  • No red errors in Xcode
  • No yellow warnings (ideally)

Core Data Check

  • FitTrackModel.xcdatamodeld exists
  • 4 entities created (WeightEntry, Workout, Exercise, FoodEntry)
  • Codegen set to "Class Definition" for all entities
  • Workout ↔ Exercise relationship configured

🐛 Common Issues

"Cannot find type 'WeightEntry'"

Missing: Core Data model not created or codegen not set Fix: Create .xcdatamodeld file and set codegen

"No such module 'Charts'"

Missing: Deployment target too low Fix: Set iOS deployment target to 16.0+

Build errors in ViewModels

Missing: Probably missing Constants.swift or DateExtensions.swift Fix: Add utility files first

Import errors

Missing: Files not added to target Fix: Select file → File Inspector → Target Membership

📦 File Dependencies

Understanding which files depend on others:

Constants.swift (no dependencies)
  └─> Used by: All ViewModels and Views

DateExtensions.swift (no dependencies)
  └─> Used by: All ViewModels

PersistenceController.swift
  └─> Used by: All ViewModels

FoodSearchResult.swift
  └─> Used by: USDAFoodService, DietViewModel

NutritionInfo.swift
  └─> Used by: DietViewModel, Diet Views

USDAFoodService.swift
  └─> Depends on: FoodSearchResult
  └─> Used by: DietViewModel

ViewModels
  └─> Depend on: Models, Services, Utilities
  └─> Used by: Views

Views
  └─> Depend on: ViewModels, Models
  └─> Used by: ContentView

ContentView
  └─> Depends on: All Views
  └─> Used by: FitTrackApp

FitTrackApp
  └─> Depends on: ContentView, PersistenceController
  └─> Entry point (no dependents)

🎓 Learning Path

If you're new to iOS development, study files in this order:

Beginner Level

  1. Constants.swift - Simple enums and constants
  2. DateExtensions.swift - Extension methods
  3. FitTrackApp.swift - App entry point
  4. ContentView.swift - Basic SwiftUI

Intermediate Level

  1. PersistenceController.swift - Core Data basics
  2. FoodSearchResult.swift - Codable and structs
  3. WeightChartView.swift - Charts framework
  4. WeightTrackingView.swift - SwiftUI views

Advanced Level

  1. WeightViewModel.swift - MVVM pattern
  2. USDAFoodService.swift - Async networking
  3. WorkoutViewModel.swift - Complex data management
  4. DietViewModel.swift - API integration

💡 Tips

When Creating Files

  • ✅ Use exact file names (case-sensitive)
  • ✅ Place in correct folders
  • ✅ Copy entire file content (including imports)
  • ✅ Don't skip any files
  • ✅ Create folders before files

When Building

  • ✅ Build frequently (after every few files)
  • ✅ Fix errors immediately
  • ✅ Check console for warnings
  • ✅ Clean build folder if issues persist

When Testing

  • ✅ Test each feature individually
  • ✅ Add sample data to verify
  • ✅ Check charts display correctly
  • ✅ Verify data persists after app restart

✅ Final Checklist

Before considering setup complete:

  • All 22 Swift files created
  • All 6 documentation files present
  • Core Data model created with 4 entities
  • Project builds successfully (⌘B)
  • App runs in simulator (⌘R)
  • Can add weight entry
  • Can log workout
  • Can add food
  • Charts display data
  • Data persists after restart
  • No crash errors
  • USDA API key added (optional)

All checked? Setup is complete! 🎉

📞 Need Help?

If files are missing or you're unsure:

  1. Check this list - Verify all files created
  2. Check folder structure - Ensure correct organization
  3. Check file names - Must match exactly
  4. Check file contents - Copy entire code blocks
  5. Check build errors - Read error messages carefully
  6. Check documentation - Read SETUP_INSTRUCTIONS.md

Last Updated: January 2026 Version: 1.0.0 Total Files: 28 (22 code + 6 docs)