### Swift Code Style Examples

Source: https://github.com/richardtop/calendarkit/blob/master/CONTRIBUTING.md

Demonstrates the recommended Swift code style for the CalendarKit project, highlighting differences between incorrect and correct formatting for classes and functions.

```Swift
//
//  File.swift
//  CalendarKit
//
//  Created by user on 29/09/2017.
//

import Foundation

class aClass
{
    func aFunction()
    {
        
    }
}

```

```Swift
import Foundation

class aClass {
  func aFunction() {
    
  }
}

```

--------------------------------

### Install CalendarKit with CocoaPods

Source: https://github.com/richardtop/calendarkit/blob/master/README.md

This snippet shows how to add the CalendarKit library to your project using CocoaPods. It is recommended to use Swift Package Manager as CocoaPods support is deprecated.

```Ruby
pod 'CalendarKit'
```

--------------------------------

### Handle User Interaction with DayViewDelegate

Source: https://github.com/richardtop/calendarkit/blob/master/README.md

Implement methods from the DayViewDelegate protocol to respond to user interactions with event views. This includes handling taps (dayViewDidSelectEventView) and long presses (dayViewDidLongPressEventView) on events, allowing custom actions like displaying details or context menus.

```swift
import UIKit
import CalendarKit

// Assuming MyCalendarViewController subclasses DayViewController and conforms to DayViewDelegate

class MyCalendarViewController: DayViewController, DayViewDelegate {

    // ... (previous implementation)

    override func dayViewDidSelectEventView(_ eventView: EventView) {
        print("Event has been selected: \(eventView.data)")
        // Add custom logic here, e.g., present a detail view controller
    }

    override func dayViewDidLongPressEventView(_ eventView: EventView) {
        print("Event has been longPressed: \(eventView.data)")
        // Add custom logic here, e.g., show a context menu or edit options
    }
}
```

--------------------------------

### Implement EventDataSource for DayViewController

Source: https://github.com/richardtop/calendarkit/blob/master/README.md

Subclass DayViewController and implement the eventsForDate method to return an array of EventDescriptor objects. This method fetches event data, typically from a local store or API, and transforms it into Event objects with specified date intervals and display text.

```swift
import UIKit
import CalendarKit

// Assuming EventDescriptor and Event are defined elsewhere in CalendarKit
// and myAppEventStore is a custom class to fetch event data.

class MyCalendarViewController: DayViewController {

    // Placeholder for your custom event data store
    var myAppEventStore: MyAppEventStore! 

    override func eventsForDate(_ date: Date) -> [EventDescriptor] {
        // Get events (models) from the storage / API for the given date
        var models = myAppEventStore.getEventsForDate(date)

        var events = [Event]()

        for model in models {
            // Create new EventView
            let event = Event()
            // Specify DateInterval
            event.dateInterval = DateInterval(start: model.startDate, end: model.endDate)
            // Add info: event title, subtitle, location to the array of Strings
            var info = [model.title, model.location]
            // Format date period for display
            info.append("\(datePeriod.beginning!.format(with: "HH:mm")) - \(datePeriod.end!.format(with: "HH:mm"))")
            // Set "text" value of event by formatting all the information needed for display
            event.text = info.reduce("", {$0 + $1 + "\n"})
            events.append(event)
        }
        return events
    }
}
```

--------------------------------

### Customize CalendarKit Appearance with CalendarStyle

Source: https://github.com/richardtop/calendarkit/blob/master/README.md

Customize the visual appearance of CalendarKit by creating or copying a CalendarStyle object and modifying its properties. The updated style can then be applied to a DayView instance using the updateStyle method, allowing for themes like dark mode or custom color schemes.

```swift
import UIKit
import CalendarKit

// Assuming 'dayView' is an instance of DayView or a subclass like DayViewController

// Create a new CalendarStyle object (or copy an existing one)
let style = CalendarStyle()

// Change style by updating the properties
style.backgroundColor = UIColor.black
style.headerBackgroundColor = UIColor.darkGray
style.weekDayHeaderTextColor = UIColor.lightGray
style.dayHeaderTextColor = UIColor.white
style.eventTextColor = UIColor.white
style.eventBackgroundColor = UIColor.systemBlue

// Invoke updateStyle method with the new CalendarStyle
// Assuming 'dayView' is an accessible instance of DayView or its subclass
// dayView.updateStyle(style)

// Example usage within a ViewController:
// override func viewDidLoad() {
//     super.viewDidLoad()
//     let style = CalendarStyle()
//     style.backgroundColor = UIColor.black
//     dayView.updateStyle(style)
// }
```

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