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

import UIKit
import Toast_Swift

class LessonViewController: UIViewController {

    @IBOutlet var navigationBar: UINavigationBar!
    @IBOutlet var lessonNameLabel: UILabel!
    @IBOutlet var lessonsTableView: UITableView!
    
    var viewModel = LessonViewModel()
    var lessonModel = [LessonModel]()
    var unitId = Int()
    var interventionId = Int()
    var interventionLevelId = Int()
    var lessonName = String()
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        setupData()
        viewModel.delegate = self
        lessonsTableView.delegate = self
        lessonsTableView.dataSource = self
        getLessons()
    }
    
    func setupData() {
        lessonNameLabel.text = "\(lessonName) ->"
    }
    
    func getLessons() {
        if Reachability.isConnectedToNetwork() {
            viewModel.getLessons(interventionId: interventionId, interventionLevelId: interventionLevelId, unitId: unitId)
        } 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 backAction(_ sender: UIBarButtonItem) {
        self.navigationController?.popViewController(animated: true)
    }
    
}

extension LessonViewController: UITableViewDelegate, UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return lessonModel.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        guard let cell = tableView.dequeueReusableCell(withIdentifier: "LessonTableViewCell", for: indexPath) as? LessonTableViewCell else {
            return UITableViewCell()
        }
        
        cell.selectionStyle = .none
        cell.customCellView.layer.cornerRadius = 10
        cell.customCellView.dropShadow()
        cell.lessonNameLabel.text = "Lesson \(indexPath.row + 1): \(lessonModel[indexPath.row].name ?? "")"
        
        return cell
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let vc = self.storyboard?.instantiateViewController(withIdentifier: "LessonListViewController") as! LessonListViewController
        vc.lessonId = lessonModel[indexPath.row].id ?? 0
        vc.contentName = "\(lessonName) : " + "Lesson \(indexPath.row + 1): \(lessonModel[indexPath.row].name ?? "")"
        self.navigationController?.pushViewController(vc, animated: true)
    }
}

extension LessonViewController: LessonProtocol {
    func startLoader() {
        ActivityIndicator.start()
    }
    
    func stopLoader() {
        ActivityIndicator.stop()
    }
    
    func showError(error: String) {
        self.view.makeToast(error)
    }
    
    func lessonModel(model: [LessonModel]) {
        self.lessonModel = model
        self.lessonsTableView.reloadData()
    }
}