Diary

일기장(즐겨찾기 기능, 수정, 삭제, 추가)

import Foundation

struct Diary {
    var uuidString: String
    var title: String
    var contents: String
    var date: Date
    var isStar: Bool
}

import UIKit

class DiaryCell: UICollectionViewCell {
    
    @IBOutlet weak var titleLabel: UILabel!
    @IBOutlet weak var dateLabel: UILabel!
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        contentView.layer.cornerRadius = 3.0
        contentView.layer.borderWidth = 1.0
        contentView.layer.borderColor = UIColor.black.cgColor
    }
    
}

import UIKit

class DiaryDetailViewController: UIViewController {

    @IBOutlet weak var titleLabel: UILabel!
    @IBOutlet weak var contentsTextView: UITextView!
    @IBOutlet weak var dateLabel: UILabel!
    var starButton: UIBarButtonItem?
        
    var diary: Diary?
    var indexPath: IndexPath?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        configureView()
        NotificationCenter.default.addObserver(self, selector: #selector(starDiaryNotification(_:)), name: NSNotification.Name("starDiary"),
          object: nil)
    }
    
    private func configureView() {
        guard let diary = diary else { return }
        titleLabel.text = diary.title
        contentsTextView.text = diary.contents
        dateLabel.text = dateToString(date: diary.date)
        starButton = UIBarButtonItem(image: nil, style: .plain, target: self, action: #selector(starBTN))
        starButton?.image = diary.isStar ? UIImage(systemName: "star.fill") : UIImage(systemName: "star")
        starButton?.tintColor = .yellow
        navigationItem.rightBarButtonItem = starButton
    }
    
    @objc func starBTN() {
        guard let isStar = diary?.isStar else { return }
        if isStar {
            starButton?.image = UIImage(systemName: "star")
        } else {
            starButton?.image = UIImage(systemName: "star.fill")
        }
        diary?.isStar = !isStar
        NotificationCenter.default.post(name: NSNotification.Name("starDiary"), object: ["diary": diary, "isStar" : diary?.isStar ?? false, "uuidString": diary?.uuidString], userInfo: nil)
    }
    
    @objc func starDiaryNotification(_ notification: Notification) {
      guard let starDiary = notification.object as? [String: Any], let isStar = starDiary["isStar"] as? Bool, let uuidString = starDiary["uuidString"] as? String, let diary = self.diary  else { return }
      if diary.uuidString == uuidString {
        self.diary?.isStar = isStar
        self.configureView()
      }
    }
    
    private func dateToString(date: Date) -> String {
        let formatter = DateFormatter()
        formatter.dateFormat = "yy-MM-dd(EEEEE)"
        formatter.locale = Locale(identifier: "ko_KR")
        return formatter.string(from: date)
    }
        
    @IBAction func editBTN(_ sender: UIButton) {
        
        guard let viewController = storyboard?.instantiateViewController(identifier: "WriteDiaryViewController") as? WriteDiaryViewController else { return }
        guard let indexPath = indexPath, let diary = diary else { return }
        viewController.diaryEditorMode = .edit(indexPath, diary)
        NotificationCenter.default.addObserver(self, selector: #selector(editDiaryNotification(_:)), name: NSNotification.Name("editDiary"), object: nil)
        navigationController?.pushViewController(viewController, animated: true)
        
    }
    
    @objc func editDiaryNotification(_ notification: Notification) {
        guard let diary = notification.object as? Diary else { return }
        self.diary = diary
        configureView()
    }
    
    @IBAction func removeBTN(_ sender: UIButton) {
        
        guard let uuidString = self.diary?.uuidString else { return }
        NotificationCenter.default.post(name: NSNotification.Name("deleteDiary"), object: uuidString, userInfo: nil)
        navigationController?.popViewController(animated: true)
        
    }
    
    deinit {
        NotificationCenter.default.removeObserver(self)
    }
    
}

import UIKit

class StarCell: UICollectionViewCell {
    
    @IBOutlet weak var titleLabel: UILabel!
    @IBOutlet weak var dateLabel: UILabel!
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        contentView.layer.cornerRadius = 3.0
        contentView.layer.borderWidth = 1.0
        contentView.layer.borderColor = UIColor.black.cgColor
    }
    
}

import UIKit

class StarViewController: UIViewController {
    
    @IBOutlet weak var collectionView: UICollectionView!
    
    private var diaryList = [Diary]()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        configureCollectionView()
        loadStarDiaryList()
        NotificationCenter.default.addObserver(self, selector: #selector(editDiaryNotification(_:)), name: NSNotification.Name("editDiary"), object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(starDiaryNotification(_:)), name: NSNotification.Name("starDiary"), object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(deleteDiaryNotification(_:)), name: NSNotification.Name("deleteDiary"), object: nil)
    }
        
    private func configureCollectionView() {
        collectionView.collectionViewLayout = UICollectionViewFlowLayout()
        collectionView.contentInset = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
        collectionView.delegate = self
        collectionView.dataSource = self
    }
    
    private func loadStarDiaryList() {
        let userDefaults = UserDefaults.standard
        guard let data = userDefaults.object(forKey: "diaryList") as? [[String: Any]] else { return }
        diaryList = data.compactMap{
            guard let uuidString = $0["uuidString"] as? String, let title = $0["title"] as? String, let contents = $0["contents"] as? String, let date = $0["date"] as? Date, let isStar = $0["isStar"] as? Bool else { return nil }
            return Diary(uuidString: uuidString, title: title, contents: contents, date: date, isStar: isStar)
        }.filter {$0.isStar == true}.sorted(by: {$0.date.compare($1.date) == .orderedDescending})
    }
    
    private func dateToString(date: Date) -> String {
        let formatter = DateFormatter()
        formatter.dateFormat = "yy-MM-dd(EEEEE)"
        formatter.locale = Locale(identifier: "ko_KR")
        return formatter.string(from: date)
    }
    
    @objc func editDiaryNotification(_ notification: Notification) {
      guard let diary = notification.object as? Diary, let index = self.diaryList.firstIndex(where: { $0.uuidString == diary.uuidString }) else { return }
      self.diaryList[index] = diary
      self.diaryList = self.diaryList.sorted(by: {
        $0.date.compare($1.date) == .orderedDescending
      })
      self.collectionView.reloadData()
    }

    @objc func starDiaryNotification(_ notification: Notification) {
      guard let starDiary = notification.object as? [String: Any], let dairy = starDiary["diary"] as? Diary, let isStar = starDiary["isStar"] as? Bool, let uuidString = starDiary["uuidString"] as? String  else { return }
      if isStar {
        self.diaryList.append(dairy)
        self.diaryList = self.diaryList.sorted(by: {
          $0.date.compare($1.date) == .orderedDescending
        })
        self.collectionView.reloadData()
      } else {
        guard let index = self.diaryList.firstIndex(where: { $0.uuidString == uuidString }) else { return }
        self.diaryList.remove(at: index)
        self.collectionView.deleteItems(at: [IndexPath(row: index, section: 0)])
      }
    }

    @objc func deleteDiaryNotification(_ notification: Notification) {
      guard let uuidString = notification.object as? String, let index = self.diaryList.firstIndex(where: { $0.uuidString == uuidString }) else { return }
      self.diaryList.remove(at: index)
      self.collectionView.deleteItems(at: [IndexPath(row: index, section: 0)])
    }

}

extension StarViewController: UICollectionViewDataSource {
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return diaryList.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "StarCell", for: indexPath) as? StarCell else { return UICollectionViewCell() }
        let diary = diaryList[indexPath.row]
        cell.titleLabel.text = diary.title
        cell.dateLabel.text = dateToString(date: diary.date)
        return cell
    }
    
}

extension StarViewController: UICollectionViewDelegateFlowLayout {
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        return CGSize(width: UIScreen.main.bounds.width - 20, height: 80)
    }
    
}

extension StarViewController: UICollectionViewDelegate {
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        guard let viewController = storyboard?.instantiateViewController(identifier: "DiaryDetailViewController") as? DiaryDetailViewController else { return }
        let diary = diaryList[indexPath.row]
        viewController.diary = diary
        viewController.indexPath = indexPath
        navigationController?.pushViewController(viewController, animated: true)
    }
    
}

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var collectionView: UICollectionView!
    
    private var diaryList = [Diary]() {
        didSet {
            saveDiaryList()
        }
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        configureCollectionView()
        loadDiaryList()
        NotificationCenter.default.addObserver(self, selector: #selector(editDiaryNotification(_:)), name: NSNotification.Name("editDiary"), object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(starDiaryNotification(_:)), name: NSNotification.Name("starDiary"), object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(deleteDiaryNotification(_:)), name: Notification.Name("deleteDiary"), object: nil)
    }
    
    @objc func editDiaryNotification(_ notification: Notification) {
        guard let diary = notification.object as? Diary, let index = diaryList.firstIndex(where: { $0.uuidString == diary.uuidString }) else { return }
        diaryList[index] = diary
        diaryList = self.diaryList.sorted(by: {
          $0.date.compare($1.date) == .orderedDescending
        })
        self.collectionView.reloadData()
    }
    
    @objc func starDiaryNotification(_ notification: Notification) {
        guard let starDiary = notification.object as? [String: Any], let isStar = starDiary["isStar"] as? Bool, let uuidString = starDiary["uuidString"] as? String, let index = self.diaryList.firstIndex(where: { $0.uuidString == uuidString }) else { return }
        diaryList[index].isStar = isStar
    }
    
    @objc func deleteDiaryNotification(_ notification: Notification) {
      guard let uuidString = notification.object as? String, let index = diaryList.firstIndex(where: { $0.uuidString == uuidString }) else { return }
        diaryList.remove(at: index)
        collectionView.deleteItems(at: [IndexPath(row: index, section: 0)])
    }
    
    private func configureCollectionView() {
        collectionView.collectionViewLayout = UICollectionViewFlowLayout()
        collectionView.contentInset = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
        collectionView.delegate = self
        collectionView.dataSource = self
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if let writeDiaryViewController = segue.destination as? WriteDiaryViewController {
            writeDiaryViewController.delegate = self
        }
    }
    
    private func saveDiaryList() {
        let date = diaryList.map {
            [
                "uuidString": $0.uuidString,
                "title": $0.title,
                "contents": $0.contents,
                "date": $0.date,
                "isStar": $0.isStar
            ]
        }
        let userDefaults = UserDefaults.standard
        userDefaults.set(date, forKey: "diaryList")
    }
    
    private func loadDiaryList() {
        let userDefaults = UserDefaults.standard
        guard let data = userDefaults.object(forKey: "diaryList") as? [[String: Any]] else { return }
        diaryList = data.compactMap{
            guard let uuidString = $0["uuidString"] as? String, let title = $0["title"] as? String, let contents = $0["contents"] as? String, let date = $0["date"] as? Date, let isStar = $0["isStar"] as? Bool else { return nil }
            return Diary(uuidString: uuidString, title: title, contents: contents, date: date, isStar: isStar)
        }
        diaryList = diaryList.sorted(by: {
            $0.date.compare($1.date) == .orderedDescending
        })
    }
    
    private func dateToString(date: Date) -> String {
        let formatter = DateFormatter()
        formatter.dateFormat = "yy-MM-dd(EEEEE)"
        formatter.locale = Locale(identifier: "ko_KR")
        return formatter.string(from: date)
    }
}

extension ViewController: UICollectionViewDataSource {
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return diaryList.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "DiaryCell", for: indexPath) as? DiaryCell else { return UICollectionViewCell() }
        let diary = diaryList[indexPath.row]
//        print(diary)
        cell.titleLabel.text = diary.title
//        print(diary.title)
        cell.dateLabel.text = dateToString(date: diary.date)
        return cell
    }
    
}

extension ViewController: UICollectionViewDelegateFlowLayout {
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        return CGSize(width: (UIScreen.main.bounds.width / 2) - 20, height: 200)
    }
    
}

extension ViewController: UICollectionViewDelegate {
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        guard let viewController = storyboard?.instantiateViewController(identifier: "DiaryDetailViewController") as? DiaryDetailViewController else { return }
        let diary = diaryList[indexPath.row]
        viewController.diary = diary
        viewController.indexPath = indexPath
        navigationController?.pushViewController(viewController, animated: true)
    }
    
}

extension ViewController: WriteDiaryViewDelegate {
    
    func didSelectRegister(diary: Diary) {
        diaryList.append(diary)
        diaryList = diaryList.sorted(by: {$0.date.compare($1.date) == .orderedDescending})
        collectionView.reloadData()
    }
    
}

import UIKit

enum DiaryEditorMode {
    
    case new
    case edit(IndexPath, Diary)
    
}

protocol WriteDiaryViewDelegate: AnyObject {
    
    func didSelectRegister(diary: Diary)
    
}

class WriteDiaryViewController: UIViewController {
    
    @IBOutlet weak var titleTextField: UITextField!
    @IBOutlet weak var dateTextField: UITextField!
    @IBOutlet weak var contentsTextView: UITextView!
    @IBOutlet weak var confirmButton: UIBarButtonItem!
    
    private let datePicker = UIDatePicker()
    private var diaryDate: Date?
    weak var delegate: WriteDiaryViewDelegate?
    var diaryEditorMode: DiaryEditorMode = .new
    
    override func viewDidLoad() {
        super.viewDidLoad()
        configureContentsTextView()
        configureDatePicker()
        confirmButton.isEnabled = false
        configureInputField()
        cofigureEditMode()
    }
    
    private func cofigureEditMode() {
        
        switch diaryEditorMode {
        case let .edit(_, diary):
            titleTextField.text = diary.title
            contentsTextView.text = diary.contents
            dateTextField.text = dateToString(date: diary.date)
            diaryDate = diary.date
            confirmButton.title = "Edit"
        default:
            break
        }
        
    }
    
    private func configureContentsTextView() {
        let borderColor = UIColor(red: 220/255, green: 220/255, blue: 220/255, alpha: 1.0)
        contentsTextView.layer.borderColor = borderColor.cgColor
        contentsTextView.layer.borderWidth = 0.5
        contentsTextView.layer.cornerRadius = 5.0
    }
    
    private func configureDatePicker() {
        datePicker.datePickerMode = .date
        datePicker.preferredDatePickerStyle = .wheels
        datePicker.addTarget(self, action: #selector(datePickerValueDidChange(_:)), for: .valueChanged)
        dateTextField.inputView = datePicker
    }
    
    private func configureInputField() {
        contentsTextView.delegate = self
        titleTextField.addTarget(self, action: #selector(titleTextFieldDidChange(_:)), for: .editingChanged)
        dateTextField.addTarget(self, action: #selector(dateTextFieldDidChange(_:)), for: .editingChanged)
    }
    
    @IBAction func confirmButton(_ sender: UIBarButtonItem) {
        guard let title = titleTextField.text, let contents = contentsTextView.text, let date = diaryDate  else { return }
        
        switch diaryEditorMode {
        case .new:
            let diary = Diary(uuidString: UUID().uuidString, title: title, contents: contents, date: date, isStar: false)
            delegate?.didSelectRegister(diary: diary)
        case let .edit(indexPath, diary):
            let diary = Diary(uuidString: diary.uuidString, title: title, contents: contents, date: date, isStar: diary.isStar)
            NotificationCenter.default.post(name: NSNotification.Name("editDiary"), object: diary, userInfo: nil)
        }
        navigationController?.popViewController(animated: true)
    }
    
    @objc private func datePickerValueDidChange(_ datePicker: UIDatePicker) {
        let formmater = DateFormatter()
        formmater.dateFormat = "yyyy-MM-dd(EEEEE)"
        formmater.locale = Locale(identifier: "ko_KR")
        diaryDate = datePicker.date
        dateTextField.text = formmater.string(from: datePicker.date)
        dateTextField.sendActions(for: .editingChanged)
    }
    
    @objc private func titleTextFieldDidChange(_ textField: UITextField) {
        vaildateInputField()
    }
    
    @objc private func dateTextFieldDidChange(_ textField: UITextField) {
        vaildateInputField()
    }
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        view.endEditing(true)
    }
    
    private func vaildateInputField() {
        confirmButton.isEnabled = !(titleTextField.text?.isEmpty ?? true) && !(dateTextField.text?.isEmpty ?? true) && !contentsTextView.text.isEmpty
    }
    
    private func dateToString(date: Date) -> String {
        let formatter = DateFormatter()
        formatter.dateFormat = "yy-MM-dd(EEEEE)"
        formatter.locale = Locale(identifier: "ko_KR")
        return formatter.string(from: date)
    }
}

extension WriteDiaryViewController: UITextViewDelegate {
    func textViewDidChange(_ textView: UITextView) {
        vaildateInputField()
    }
}