//
//  CalendarViewController.swift
//  LMS
//
//  Created by Suraj Kumar Mandal on 26/12/22.
//

import UIKit
import FSCalendar
import SideMenu
import Toast_Swift

class CalendarViewController: UIViewController {
    
    @IBOutlet var navigationBar: UINavigationBar!
    @IBOutlet var calendar: FSCalendar!
    
    let userData = DBManager.sharedInstance.database.objects(UserDetailsModel.self)
    var datesWithEvent = [String]()
//    var datesWithMultipleEvents = [String]()
    
    var viewModel = CalendarViewModel()
    var calendarData = [CalendarModel]()
    
    fileprivate lazy var dateFormatter2: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "yyyy-MM-dd"
        return formatter
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Do any additional setup after loading the view.
        viewModel.delegate = self
        setupUI()
        self.getCalendarData()
        calendar.dataSource = self
        calendar.delegate = self
    }
    
    func setupUI() {
        navigationBar.topItem?.title = "Calendar"
        calendar.layer.cornerRadius = 10
        calendar.dropShadow()
    }
    
    func getCurrentMonth() -> String {
        let date = Date()
        let format = DateFormatter()
        format.dateFormat = "MM-yyyy"
        let formattedMonth = format.string(from: date)
        print(formattedMonth)
        return formattedMonth
    }
    
    func getCalendarData() {
        if Reachability.isConnectedToNetwork() {
            viewModel.getCalendarData(id: userData[0].id, month: getCurrentMonth())
        } else {
            Alert.showInternetFailureAlert(on: self)
        }
    }
    
    
    /*
     // MARK: - Navigation
     
     // In a storyboard-based application, you will often want to do a little preparation before navigation
     override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
     // Get the new view controller using segue.destination.
     // Pass the selected object to the new view controller.
     }
     */
    
    
    @IBAction func sideMenuAction(_ sender: UIBarButtonItem) {
        let menu = storyboard!.instantiateViewController(withIdentifier: "SideMenuNavigationController") as! SideMenuNavigationController
        present(menu, animated: true, completion: nil)
    }
    
}

extension CalendarViewController: FSCalendarDataSource, FSCalendarDelegate, FSCalendarDelegateAppearance {
    func calendar(_ calendar: FSCalendar, numberOfEventsFor date: Date) -> Int {
        let dateString = dateFormatter2.string(from: date)
        if self.datesWithEvent.contains(dateString) {
            return 1
        }
//        if self.datesWithMultipleEvents.contains(dateString) {
//            return 2
//        }
        return 0
    }
    
    
//    func calendar(_ calendar: FSCalendar, appearance: FSCalendarAppearance, eventDefaultColorsFor date: Date) -> [UIColor]? {
//
//        let key = self.dateFormatter2.string(from: date)
//
//        if self.datesWithMultipleEvents.contains(key) {
//            return [UIColor.blue]
//        }
//        return nil
//    }
    
    func calendar(_ calendar: FSCalendar, didSelect date: Date, at monthPosition: FSCalendarMonthPosition) {
        let vc = self.storyboard?.instantiateViewController(withIdentifier: "MeetingListViewController") as! MeetingListViewController
        vc.calendarData = self.calendarData
        vc.meetingDate = dateFormatter2.string(from: date)
        vc.selectedDate = date
        self.present(vc, animated: true, completion: nil)
    }
    
    func minimumDate(for calendar: FSCalendar) -> Date {
        return Date()
    }
}

extension CalendarViewController: CalendarProtocol {
    func startLoader() {
        ActivityIndicator.start()
    }
    
    func stopLoader() {
        ActivityIndicator.stop()
    }
    
    func showError(error: String) {
        self.view.makeToast(error)
    }
    
    func loadData(model: [CalendarModel]) {
        self.calendarData = model
        for data in model {
            let date = data.date
            datesWithEvent.append(date ?? "")
        }
        print(datesWithEvent)
        self.calendar.reloadData()
    }
}