# Refactoring Complete!

The codebase has been refactored from a single `model.go` file (~650 lines) into a clean, modular structure.

## New Structure

```
terminalShop/
├── main.go                    # Entry point (~20 lines)
├── pkg/
│   ├── models/
│   │   └── coffee.go         # Data models (~25 lines)
│   └── tui/
│       ├── model.go          # Core model & state (~160 lines)
│       ├── views.go          # Main View() function (~60 lines)
│       ├── shop.go           # Shop view (~90 lines)
│       ├── cart.go           # Cart view (~90 lines)
│       ├── account.go        # Account view (~75 lines)
│       ├── header.go         # Header rendering (~95 lines)
│       └── footer.go         # Footer rendering (~75 lines)
├── model.go.old              # Backup of old file
└── server.go.old             # Backup of old file
```

## What Changed

### Before
- **1 file**: `model.go` with 650+ lines
- All code mixed together
- Hard to navigate and maintain
- Difficult to find specific features

### After
- **8 focused files** averaging ~70 lines each
- Clear separation of concerns
- Easy to find and modify features
- Follows Go best practices

## File Responsibilities

| File | Purpose | Key Functions |
|------|---------|---------------|
| `main.go` | App entry point | `main()` |
| `pkg/models/coffee.go` | Data structures | `Coffee`, `CartItem`, `AccountMenuItems` |
| `pkg/tui/model.go` | State management | `Model`, `Init()`, `Update()`, `NewModel()` |
| `pkg/tui/views.go` | Layout assembly | `View()` |
| `pkg/tui/shop.go` | Shop view | `BuildShopView()` |
| `pkg/tui/cart.go` | Cart view | `BuildCartView()` |
| `pkg/tui/account.go` | Account views | `BuildAccountView()`, `buildAccountSubpage()` |
| `pkg/tui/header.go` | Header/tabs | `BuildHeader()` |
| `pkg/tui/footer.go` | Footer/keybinds | `BuildFooter()` |

## Benefits

1. **Easier to Navigate**: Find shop code in `shop.go`, cart code in `cart.go`, etc.
2. **Easier to Test**: Each component can be tested independently
3. **Easier to Extend**: Add new views by creating new files
4. **Better Organization**: Related code stays together
5. **Cleaner Git Diffs**: Changes to cart don't affect shop code
6. **Follows Standards**: Matches Go project conventions

## Running the App

Same as before:

```bash
# Run the app
go run main.go

# Or build and run
go build -o terminalshop main.go
./terminalshop
```

## Adding New Features

### Adding a New View (e.g., "Settings")

1. Create `pkg/tui/settings.go`:
```go
package tui

func (m Model) BuildSettingsView() string {
    // Your settings view code
}
```

2. Update `model.go`:
- Add `viewingSettings bool` to Model struct
- Add keybind case in Update()

3. Update `views.go`:
- Add condition for settings view

4. Update `header.go` and `footer.go`:
- Add settings tab/keybinds

### Adding New Data Models

Add to `pkg/models/` directory:
```go
// pkg/models/order.go
package models

type Order struct {
    ID string
    Items []CartItem
    Total float64
}
```

## Migration Notes

- Old files backed up as `.old`
- All functionality preserved
- No behavior changes
- Imports use `terminalShop/pkg/...`

## Next Steps

Now that the code is organized, you can easily:
- Add new views (checkout, payment, orders)
- Implement API client in `pkg/api/`
- Add database models in `pkg/models/`
- Create tests for each component
- Continue with Phase 2 of the roadmap (Backend API)

## Rollback

If needed, restore the old structure:
```bash
mv model.go.old model.go
mv server.go.old server.go
rm -rf pkg/
# Edit main.go to use InitialModel again
```

---

**Refactored on**: 2026-02-12
**Lines of code**: Same functionality, better organized!