//
//  Date+Extensions.swift
//  PadelClub
//
//  Created by Razmig Sarkissian on 01/03/2024.
//

import Foundation
enum TimeOfDay {
    case morning
    case noon
    case afternoon
    case evening
    case night
    
    var hello: String {
        switch self {
        case .morning, .noon, .afternoon:
            return "Bonjour"
        case .evening, .night:
            return "Bonsoir"
        }
    }
    
    var goodbye: String {
        switch self {
        case .morning, .noon, .afternoon:
            return "Bonne journée"
        case .evening, .night:
            return "Bonne soirée"
        }
    }

}



extension Date {
    func localizedDate() -> String {
        self.formatted(.dateTime.weekday().day().month()) + " à " + self.formatted(.dateTime.hour().minute())
    }
    
    var monthYearFormatted: String {
        formatted(.dateTime.month(.wide).year(.defaultDigits))
    }
    
    var twoDigitsYearFormatted: String {
        formatted(Date.FormatStyle(date: .numeric, time: .omitted).locale(Locale(identifier: "fr_FR")).year(.twoDigits))
    }
    
    var timeOfDay: TimeOfDay {
        let hour = Calendar.current.component(.hour, from: self)
        switch hour {
        case 6..<12 : return .morning
        case 12 : return .noon
        case 13..<17 : return .afternoon
        case 17..<22 : return .evening
        default: return .night
        }
    }

}

extension Date {
    func isInCurrentYear() -> Bool {
        let calendar = Calendar.current
        let currentYear = calendar.component(.year, from: Date())
        let yearOfDate = calendar.component(.year, from: self)
        
        return currentYear == yearOfDate
    }
    
    func get(_ components: Calendar.Component..., calendar: Calendar = Calendar.current) -> DateComponents {
        return calendar.dateComponents(Set(components), from: self)
    }

    func get(_ component: Calendar.Component, calendar: Calendar = Calendar.current) -> Int {
        return calendar.component(component, from: self)
    }
    
    var tomorrowAtNine: Date {
        let currentHour = Calendar.current.component(.hour, from: self)
        let startOfDay = Calendar.current.startOfDay(for: self)
        if currentHour < 8 {
            return Calendar.current.date(byAdding: .hour, value: 9, to: startOfDay)!
        } else {
            let date = Calendar.current.date(byAdding: .day, value: 1, to: startOfDay)
            return Calendar.current.date(byAdding: .hour, value: 9, to: date!)!
        }
    }
    
    static var firstDayOfWeek = Calendar.current.firstWeekday
      static var capitalizedFirstLettersOfWeekdays: [String] {
          let calendar = Calendar.current
          //           let weekdays = calendar.shortWeekdaySymbols
          
          //           return weekdays.map { weekday in
          //               guard let firstLetter = weekday.first else { return "" }
          //               return String(firstLetter).capitalized
          //           }
          // Adjusted for the different weekday starts
          var weekdays = calendar.veryShortStandaloneWeekdaySymbols
          if firstDayOfWeek > 1 {
              for _ in 1..<firstDayOfWeek {
                  if let first = weekdays.first {
                      weekdays.append(first)
                      weekdays.removeFirst()
                  }
              }
          }
          return weekdays.map { $0.capitalized }
      }
         
         static var fullMonthNames: [String] {
             let dateFormatter = DateFormatter()
             dateFormatter.locale = Locale.current

             return (1...12).compactMap { month in
                 dateFormatter.setLocalizedDateFormatFromTemplate("MMMM")
                 let date = Calendar.current.date(from: DateComponents(year: 2000, month: month, day: 1))
                 return date.map { dateFormatter.string(from: $0) }
             }
         }
      
      var startOfMonth: Date {
          Calendar.current.dateInterval(of: .month, for: self)!.start
      }
      
      var endOfMonth: Date {
          let lastDay = Calendar.current.dateInterval(of: .month, for: self)!.end
          return Calendar.current.date(byAdding: .day, value: -1, to: lastDay)!
      }
      
      var startOfPreviousMonth: Date {
          let dayInPreviousMonth = Calendar.current.date(byAdding: .month, value: -1, to: self)!
          return dayInPreviousMonth.startOfMonth
      }
      
      var numberOfDaysInMonth: Int {
          Calendar.current.component(.day, from: endOfMonth)
      }
      
  //    var sundayBeforeStart: Date {
  //        let startOfMonthWeekday = Calendar.current.component(.weekday, from: startOfMonth)
  //        let numberFromPreviousMonth = startOfMonthWeekday - 1
  //        return Calendar.current.date(byAdding: .day, value: -numberFromPreviousMonth, to: startOfMonth)!
  //    }
      // New to accomodate for different start of week days
      var firstWeekDayBeforeStart: Date {
          let startOfMonthWeekday = Calendar.current.component(.weekday, from: startOfMonth)
          let numberFromPreviousMonth = startOfMonthWeekday - Self.firstDayOfWeek
          return Calendar.current.date(byAdding: .day, value: -numberFromPreviousMonth, to: startOfMonth)!
      }
      
      var calendarDisplayDays: [Date] {
          var days: [Date] = []
          // Current month days
          for dayOffset in 0..<numberOfDaysInMonth {
              let newDay = Calendar.current.date(byAdding: .day, value: dayOffset, to: startOfMonth)
              days.append(newDay!)
          }
          // previous month days
          for dayOffset in 0..<startOfPreviousMonth.numberOfDaysInMonth {
              let newDay = Calendar.current.date(byAdding: .day, value: dayOffset, to: startOfPreviousMonth)
              days.append(newDay!)
          }
          
          // Fixed to accomodate different weekday starts
          return days.filter { $0 >= firstWeekDayBeforeStart && $0 <= endOfMonth }.sorted(by: <)
      }
      
      var monthInt: Int {
          Calendar.current.component(.month, from: self)
      }
      
      var yearInt: Int {
          Calendar.current.component(.year, from: self)
      }
      
      var dayInt: Int {
          Calendar.current.component(.day, from: self)
      }
      var startOfDay: Date {
          Calendar.current.startOfDay(for: self)
      }
}

extension Date {
    func isEarlierThan(_ date: Date) -> Bool {
        self < date
    }
}