//
//  AssessmentBeneficiaryViewController.swift
//  LMS
//
//  Created by Suraj Kumar Mandal on 24/08/22.
//

import UIKit
import SideMenu

class AssessmentBeneficiaryViewController: UIViewController {

    @IBOutlet var navigationBar: UINavigationBar!
    @IBOutlet var assessmentListTableView: UITableView!
    
    var viewModel = AssessmentBeneficiaryViewModel()
    var assessmentListModel = [AssessmentListModel]()
    let userData = DBManager.sharedInstance.database.objects(UserDetailsModel.self)
    var upcomingAssessment = [AssessmentListModel]()
    var pastAssessment = [AssessmentListModel]()
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        viewModel.delegate = self
        assessmentListTableView.delegate = self
        assessmentListTableView.dataSource = self
        setupUI()
    }
    
    func setupUI() {
        navigationBar.topItem?.title = "Final Exam"
    }
    
    override func viewWillAppear(_ animated: Bool) {
        if Reachability.isConnectedToNetwork() {
            viewModel.getAssessmentList(userId: userData[0].id, month: getCurrentMonth())
        } else {
            Alert.showInternetFailureAlert(on: self)
        }
    }
    
    func formattedDateFromString(dateString: String, withFormat format: String) -> String? {
        let inputFormatter = DateFormatter()
        inputFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
        if let date = inputFormatter.date(from: dateString) {
            let outputFormatter = DateFormatter()
            outputFormatter.dateFormat = format
            return outputFormatter.string(from: date)
        }
        return nil
    }
    
    func formattedTimeFromString(dateString: String, withFormat format: String) -> String? {
        let inputFormatter = DateFormatter()
        inputFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
        if let date = inputFormatter.date(from: dateString) {
            let outputFormatter = DateFormatter()
            outputFormatter.dateFormat = format
            outputFormatter.timeStyle = .short
            return outputFormatter.string(from: date)
        }
        return nil
    }
    
    func getCurrentMonth() -> String {
        let date = Date()
        let format = DateFormatter()
        format.dateFormat = "MM-yyyy"
        let formattedMonth = format.string(from: date)
        print(formattedMonth)
        return formattedMonth
    }
    
    private func executeRepeatedly() {
        // put your code here
        self.assessmentListTableView.reloadData()
        DispatchQueue.main.asyncAfter(deadline: .now() + 60.0) { [weak self] in
            self?.executeRepeatedly()
        }
    }
    
    func setArrayData(array: [AssessmentListModel]) {
        let date = Date()
        let format = DateFormatter()
        format.dateFormat = "yyyy-MM-dd HH:mm:ss"
        let time = format.string(from: date)

        
        for item in array {
            let assessmentTime = format.date(from: item.startDateTime!)
            let currentTime = format.date(from: time)

            if assessmentTime?.compare(currentTime!) == .orderedAscending {
                pastAssessment.append(item)
            } else {
                upcomingAssessment.append(item)
            }
        }
        
        let upcoming = upcomingAssessment.sorted(by: {$0.startDateTime! < $1.startDateTime!})
        let past = pastAssessment.sorted(by: {$0.startDateTime! > $1.startDateTime!})
        self.assessmentListModel = upcoming + past
        executeRepeatedly()
    }
    

    /*
    // 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 AssessmentBeneficiaryViewController: UITableViewDelegate, UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return assessmentListModel.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        guard let cell = tableView.dequeueReusableCell(withIdentifier: "AssessmentListTableViewCell", for: indexPath) as? AssessmentListTableViewCell else {
            return UITableViewCell()
        }
        
        cell.selectionStyle = .none
        cell.customView.layer.cornerRadius = 10
        cell.customView.layer.borderWidth = 1
        cell.customView.layer.borderColor = #colorLiteral(red: 0.8039215803, green: 0.8039215803, blue: 0.8039215803, alpha: 1)
        cell.serialNoLabel.text = "\(indexPath.row + 1)"
        cell.activeStatusLabel.text = assessmentListModel[indexPath.row].assessment?.mode
        if assessmentListModel[indexPath.row].assessment?.mode == "Online" {
            cell.activeStatusImageView.tintColor = #colorLiteral(red: 0.3843137255, green: 0.6470588235, blue: 0.262745098, alpha: 1)
        } else {
            cell.activeStatusImageView.tintColor = #colorLiteral(red: 0.9098039216, green: 0.2980392157, blue: 0.2470588235, alpha: 1)
        }
        cell.timeLabel.isHidden = true
        cell.dateLabel.text = " " + (formattedDateFromString(dateString: assessmentListModel[indexPath.row].startDateTime!, withFormat: "dd MMM hh:mm a") ?? "") + " - " + (formattedDateFromString(dateString: assessmentListModel[indexPath.row].endDateTime!, withFormat: "dd MMM hh:mm a") ?? "") + " "
        cell.timeLabel.text = (formattedTimeFromString(dateString: assessmentListModel[indexPath.row].startDateTime!, withFormat: "HH:mm") ?? "") + " to " + (formattedTimeFromString(dateString: assessmentListModel[indexPath.row].endDateTime!, withFormat: "HH:mm") ?? "")
        cell.assessmentNameLabel.text = assessmentListModel[indexPath.row].assessment?.name
        cell.startButton.layer.cornerRadius = 5
        if assessmentListModel[indexPath.row].attempted == true {
            cell.startButton.backgroundColor = #colorLiteral(red: 0.8039215803, green: 0.8039215803, blue: 0.8039215803, alpha: 1)
            cell.startButton.setTitle("Submitted", for: .normal)
            cell.startButton.isUserInteractionEnabled = false
        } else {
            cell.startButton.backgroundColor = #colorLiteral(red: 0.00400000019, green: 0.200000003, blue: 0.3919999897, alpha: 1)
            cell.startButton.setTitle("Start", for: .normal)
            cell.startButton.isUserInteractionEnabled = true
            cell.startButton.tag = indexPath.row
            cell.startButton.addTarget(self, action: #selector(startQuiz), for: .touchUpInside)
        }
        
        return cell
    }
    
    @objc func startQuiz(sender: UIButton) {
        let date = Date()
        let format = DateFormatter()
        format.dateFormat = "yyyy-MM-dd HH:mm:ss"
        let time = format.string(from: date)
        let currentTime = format.date(from: time)
        let startTime = format.date(from: assessmentListModel[sender.tag].startDateTime!)
        let endTime = format.date(from: assessmentListModel[sender.tag].endDateTime!)
        
        if currentTime! >= startTime! && currentTime! <= endTime! {
            if assessmentListModel[sender.tag].assessment?.mode == "Online" {
                let vc = self.storyboard?.instantiateViewController(withIdentifier: "InstructionViewController") as! InstructionViewController
                vc.assessmentId = assessmentListModel[sender.tag].assessment?.id ?? 0
                vc.assessmentName = assessmentListModel[sender.tag].assessment?.name ?? ""
                vc.quesCount = assessmentListModel[sender.tag].assessment?.totalQuestions ?? 0
                vc.assessmentType = "Final Exam"
                self.navigationController?.pushViewController(vc, animated: true)
            } else {
                let vc = self.storyboard?.instantiateViewController(withIdentifier: "OfflineAssessmentViewController") as! OfflineAssessmentViewController
                let fileType = assessmentListModel[sender.tag].assessment?.fileType
                let fileExtension = fileType!.components(separatedBy: "/")[1]
                vc.fileExtension = fileExtension
                vc.assessmentName = assessmentListModel[sender.tag].assessment?.name ?? ""
                vc.assessmentId = assessmentListModel[sender.tag].assessment?.id ?? 0
                vc.fileId = assessmentListModel[sender.tag].assessment?.fileId ?? ""
                self.navigationController?.pushViewController(vc, animated: true)
            }
        } else if currentTime! >= startTime! && currentTime! >= endTime! {
            Alert.showAlert(on: self, with: "Times Up", message: "Exam is already finished!")
        } else {
            Alert.showAlert(on: self, with: "Upcoming", message: "Exam will start on \(formattedDateFromString(dateString: assessmentListModel[sender.tag].startDateTime!, withFormat: "dd-MMM-yyyy hh:mm a") ?? "")")
        }
    }
}

extension AssessmentBeneficiaryViewController: AssessmentBeneficiaryProtocol {
    func startLoader() {
        ActivityIndicator.start()
    }
    
    func stopLoader() {
        ActivityIndicator.stop()
    }
    
    func showError(error: String) {
        self.view.makeToast(error)
    }
    
    func assessmentListModel(model: [AssessmentListModel]) {
        self.setArrayData(array: model)
    }
    
    func quizAttempts(assessmentId: Int, count: Int) {
        if count < 2 {
            let vc = self.storyboard?.instantiateViewController(withIdentifier: "InstructionViewController") as! InstructionViewController
            vc.assessmentId = assessmentId
            self.navigationController?.pushViewController(vc, animated: true)
        } else {
            Alert.showAlert(on: self, with: "Attempts Exceed!", message: "You Have Already Attemped Exam 2 Times.")
        }
    }
}