NexilisLibraryiOS/NexilisLite/NexilisLite/Source/View/Control/GroupTopicViewController.swift

//
//  GroupTopicViewController.swift
//  Qmera
//
//  Created by Yayan Dwi on 30/09/21.
//

import UIKit

class GroupTopicViewController: UITableViewController, UITextFieldDelegate {

    @IBOutlet weak var topic: UITextField!
    
    var isDismiss: (() -> ())?
    
    var data: String = ""
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        title = "Add Topic".localized()

        navigationController?.navigationBar.backgroundColor = self.traitCollection.userInterfaceStyle == .dark ? .blackDarkMode : .mainColor
        navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Save".localized(), style: .plain, target: self, action: #selector(save(sender:)))
        navigationItem.rightBarButtonItem?.isEnabled = false
        
        topic.addTarget(self, action: #selector(didChanged(sender:)), for: .editingChanged)
        topic.placeholder = "Name".localized()
        topic.delegate = self
    }
    
    func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
        guard let currentText = textField.text else { return true }
        let newLength = currentText.count + string.count - range.length
        return newLength <= 50
    }

    @objc func didChanged(sender: Any) {
        if let text = topic.text, text.trimmingCharacters(in: .whitespaces).isEmpty {
            navigationItem.rightBarButtonItem?.isEnabled = false
        } else if let button = navigationItem.rightBarButtonItem, !button.isEnabled {
            button.isEnabled = true
        }
    }

    @objc func save(sender: Any) {
        let id = Date().currentTimeMillis().toHex()
        if let text = topic.text {
            DispatchQueue.global().async {
                if let resp = Nexilis.writeAndWait(message: CoreMessage_TMessageBank.getCreateChat(chat_id: id, title: text, group_id: self.data)) {
                    if resp.isOk() {
                        Database.shared.database?.inTransaction({ fmdb, rollback in
                            do {
                                _ = try! Database.shared.insertRecord(fmdb: fmdb, table: "DISCUSSION_FORUM", cvalues: ["chat_id": id, "title": text, "group_id": self.data, "scope_id": "4"], replace: true)
                            } catch {
                                rollback.pointee = true
                                print("Access database error: \(error.localizedDescription)")
                            }
                        })
                        DispatchQueue.main.async {
                            self.navigationController?.dismiss(animated: true, completion: {
                                self.isDismiss?()
                            })
                        }
                    }
                }
            }
        }
    }
    
}