//
//  DetailViewController.swift
//  GD3_D_9244
//
//  Created by Greg on 22/10/19.
//  Copyright © 2019 GD3_A_9125. All rights reserved.
//

import UIKit
import RealmSwift

class DetailViewController: UIViewController {

    var realm: Realm! = nil
    @IBOutlet weak var name_d_9244: UILabel!
    @IBOutlet weak var npm_d_9244: UILabel!

    var index: IntegerLiteralType!

    var studentsDataList: Results<Student>{
        get{
            return try! Realm().objects(Student.self)
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        realm = try! Realm()
        name_d_9244.text = studentsDataList[index].name_d_9244
        npm_d_9244.text = studentsDataList[index].npm_d_9244
    }
    override func didReceiveMemoryWarning() {
            super.didReceiveMemoryWarning()
        }


}


////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

//
//  TableViewController.swift
//  GD3_D_9244
//
//  Created by Lab PK 3 on 21/10/19.
//  Copyright © 2019 GD3_A_9125. All rights reserved.
//

import Foundation
import RealmSwift

class TableViewController: UITableViewController, UISearchResultsUpdating{


    let searchController = UISearchController(searchResultsController: nil)
    var realm: Realm!
    var studentsData: Student!
    var filteredTableData: [Student] = []
    var studentsDataList: Results<Student>{
        get{
            return try! Realm().objects(Student.self)
        }
    }
    var isFiltering: Bool {
      return searchController.isActive && !isSearchBarEmpty
    }

    func updateSearchResults(for searchController: UISearchController) {
      let searchBar = searchController.searchBar
        filterContentForSearchText(searchBar.text!)
    }

    func filterContentForSearchText(_ searchText: String) {
      filteredTableData = studentsDataList.filter { (student: Student) -> Bool in
        return student.name_d_9244.lowercased().contains(searchText.lowercased())
      }

      tableView.reloadData()
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        realm = try! Realm()

        // 1
        searchController.searchResultsUpdater = self
        // 2
        searchController.obscuresBackgroundDuringPresentation = false
        // 3
        searchController.searchBar.placeholder = "Search"
        // 4
        navigationItem.searchController = searchController
        // 5
        definesPresentationContext = true

        tableView.tableHeaderView = searchController.searchBar

    }

    var isSearchBarEmpty: Bool {
      return searchController.searchBar.text?.isEmpty ?? true
    }


    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        if isFiltering {
          return filteredTableData.count
        }
        return studentsDataList.count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "tableCell", for: indexPath)

        let data: Student
        if isFiltering {
          data = filteredTableData[indexPath.row]
        } else {
          data = studentsDataList[indexPath.row]
        }

        cell.textLabel!.text = data.name_d_9244
        cell.detailTextLabel!.text = data.npm_d_9244
        return cell
    }

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

        let index = indexPath.row
        performSegue(withIdentifier: "detailVC", sender: index)
        tableView.deselectRow(at: indexPath, animated: true)
    }

    override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
        if editingStyle == .delete{
            let data = studentsDataList[indexPath.row]

            try! self.realm.write({
                self.realm.delete(data)
            })

            tableView.deleteRows(at: [indexPath], with: .automatic)
        }
    }

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "detailVC"{
            if let descVC = segue.destination as? DetailViewController{
                descVC.index = sender as? IntegerLiteralType
            }
        }

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

}