//
//  OTPVM.swift
//  WOKA
//
//  Created by MacBook Pro on 29/04/24.
//

import UIKit

class OTPVM{
    
    weak var vc : OTPVC!
    
    func initView(){
        let color1 = #colorLiteral(red: 0.144693464, green: 0.1426281333, blue: 0.6686832905, alpha: 1)
        let color2 = #colorLiteral(red: 0.6901960784, green: 0.2745098039, blue: 0.7568627451, alpha: 1)
        vc.nextBtn.applyGradient(colors: [color1, color2], startPoint: CGPoint(x: 0, y: 0), endPoint: CGPoint(x: 0.8, y: 0))
        vc.nextBtn.roundCorner()
        
        self.vc.wokaLogoTopConstriant.constant = CheckPhoneHomeBtnOrNotch.shareInstance.topConstriant()
        tfMod(textField: [vc.tf1, vc.tf2, vc.tf3, vc.tf4])
        
        if AuthFunc.shareInstance.userType == .adult{
            vc.codeSentLabel.text = "Please Get the OTP Sent to Your  Email".localized(loc: K.GVar.localized)
            vc.enterCodeLabel.text = "PLEASE ENTER THE OTP".localized(loc: K.GVar.localized)
            vc.requestThemLabel.text = "Don’t forget to check your JUNK/SPAM folder".localized(loc: K.GVar.localized)
        }else{
            vc.codeSentLabel.text = "Please Get the Code Sent to Your Parent’s Email".localized(loc: K.GVar.localized)
            vc.enterCodeLabel.text = "PLEASE ENTER THE CODE".localized(loc: K.GVar.localized)
            vc.requestThemLabel.text = "Request them for the verfication code to activate your account".localized(loc: K.GVar.localized)
        }
    }
    
    private func tfMod(textField : [UITextField]){
        for i in textField{
            i.roundCorner(radius: i.frame.height / 2)
            i.delegate = vc.self
            i.textContentType = .oneTimeCode
            i.addTarget(self, action: #selector(self.textFieldDidChange(textField:)), for: UIControl.Event.editingChanged)
        }
    }
    
    // MARK: - TextField OTp handling

    func textFieldDidChange(_ textField: UITextField, otpCode: String) {
          if textField.textContentType == UITextContentType.oneTimeCode{
              //here split the text to your four text fields
              if otpCode.count == 4, Int(otpCode) != nil {
                  vc.tf1.text = String(otpCode[otpCode.index(otpCode.startIndex, offsetBy: 0)])
                  vc.tf2.text = String(otpCode[otpCode.index(otpCode.startIndex, offsetBy: 1)])
                  vc.tf3.text = String(otpCode[otpCode.index(otpCode.startIndex, offsetBy: 2)])
                  vc.tf4.text = String(otpCode[otpCode.index(otpCode.startIndex, offsetBy: 3)])
                  
//                  let textFields = [vc.tf1,vc.tf2,vc.tf3,vc.tf4]
//                  for i in 0..<textFields.count{
//                      textFields[i].layer.borderColor = UIColor.GREEN_COLOR.cgColor
//                  }
              } else {
                  textField.text = ""
              }
              textField.resignFirstResponder()
          }
    }
    
    func emptyTF(tf : [UITextField]){
        DispatchQueue.main.async {
            for i in tf{
                i.text = ""
            }
        }
    }
    
    @objc func textFieldDidChange(textField: UITextField){
        let text = textField.text
        if  text?.count == 1 {
            switch textField{
            case vc.tf1:
                vc.tf2.becomeFirstResponder()
            case vc.tf2:
                vc.tf3.becomeFirstResponder()
            case vc.tf3:
                vc.tf4.becomeFirstResponder()
            case vc.tf4:
                vc.tf4.resignFirstResponder()
            default:
                break
            }
        }
        if  text?.count == 0 {
            switch textField{
            case vc.tf1:
                vc.tf1.becomeFirstResponder()
            case vc.tf2:
                vc.tf1.becomeFirstResponder()
            case vc.tf3:
                vc.tf2.becomeFirstResponder()
            case vc.tf4:
                vc.tf3.becomeFirstResponder()
            default:
                break
            }
        }
    }
}