//
//  SPTextField.swift
//  Thimra
//
//  Created by 曾觉新 on 2025/4/17.
//

import UIKit

class SPTextField: UITextField {

    ///0 不限制字数
    var maxNumber = 0
    
    var currentNumber = 0
    
    ///是否为手机格式
    var isPhone: Bool = false
    
    var textDidChange: ((_ text: String) -> Void)?

    var sp_placeholder: String? {
        set {
            _createAttributedPlaceholder()
            let newStr = NSMutableAttributedString(string: newValue ?? "")
            newStr.font = self.sp_placeholderFont
            newStr.color = self.sp_placeholderColor
            _attributedPlaceholder = newStr
            self.attributedPlaceholder = _attributedPlaceholder
        }
        get {
            return _attributedPlaceholder?.string
        }
    }
    
    var sp_placeholderFont: UIFont? {
        
        set {
            _createAttributedPlaceholder()
            _attributedPlaceholder?.font = newValue
            self.attributedPlaceholder = _attributedPlaceholder
        }
        get {
            if let font = _attributedPlaceholder?.font {
                return font
            } else {
                return self.font
            }
        }
    }
    
    var sp_placeholderColor: UIColor? {
        set {
            _createAttributedPlaceholder()
            _attributedPlaceholder?.color = newValue
            self.attributedPlaceholder = _attributedPlaceholder
        }
        get {
            if let color = _attributedPlaceholder?.color {
                return color
            } else {
                return .placeholderColor()
            }
        }
    }
    
    private var _attributedPlaceholder: NSMutableAttributedString?
    
    
    private func _createAttributedPlaceholder() {
        if self._attributedPlaceholder == nil {
            _attributedPlaceholder = NSMutableAttributedString(string: "")
            _attributedPlaceholder?.font = self.font
            _attributedPlaceholder?.color = .placeholderColor()
            self.attributedPlaceholder = _attributedPlaceholder
        }
    }
    
    deinit {
        NotificationCenter.default.removeObserver(self)
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        NotificationCenter.default.addObserver(self, selector: #selector(textDidChangeNotification(sender:)), name: UITextField.textDidChangeNotification, object: nil)
        
//        var iq = self.iq
//        iq.enableMode = .enabled
        
        self.textColor = .colorFFFFFF()
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

}

extension SPTextField {
    
    @objc func textDidChangeNotification(sender: Notification){
        
        guard let object = sender.object else { return }
        if !(object is UITextField) {return}
        if (object as! UITextField) != self {return}
        
        
        let selectedRange: UITextRange? = self.markedTextRange
        
        
        if selectedRange == nil {
            
            if !self.isPhone {
                if maxNumber > 0 {
                    if self.text?.count ?? 0 > self.maxNumber {
                        var string = self.text
                        string?.removeLast(self.text!.count - self.maxNumber)
                        self.text = string
                    }
                }
                if let textDidChange = textDidChange {
                    textDidChange(self.text ?? "")
                }
            } else {
//                var newString = self.text?.replacingOccurrences(of: " ", with: "") ?? ""
//                
//                if newString.count > self.maxNumber {
//                    newString.removeLast(newString.count - self.maxNumber)
//                }
//                
//                self.text = newString.formatToPhone()
//                if let textDidChange = textDidChange {
//                    textDidChange(newString)
//                }
            }
            
            self.currentNumber = self.text?.count ?? 0
        }
        
    }
}