//
//  KMBaseTextFormatter.swift
//  PDF Master
//
//  Created by lizhe on 2022/12/12.
//

import Cocoa

class KMBaseTextFormatter: NumberFormatter {
    var model: KMBaseTextFieldModel = KMBaseTextFieldModel()

    override func isPartialStringValid(_ partialStringPtr: AutoreleasingUnsafeMutablePointer<NSString>, proposedSelectedRange proposedSelRangePtr: NSRangePointer?, originalString origString: String, originalSelectedRange origSelRange: NSRange, errorDescription error: AutoreleasingUnsafeMutablePointer<NSString?>?) -> Bool {
        let data = self.model
        var partialString = partialStringPtr.pointee
        if partialString.debugDescription.isEmpty {
            return true
        }
        if (data.onlyNumber) {
            var regex: NSString = "^[0123456789.]*$"
            if !data.specialChart.debugDescription.isEmpty {
                regex = NSString(format: "^[0123456789%@]*$", data.specialChart)
            }
            let predicate = NSPredicate.init(format: "SELF MATCHES %@", regex)
            if !predicate.evaluate(with: partialString) {
                return false
            }
            
            
            if !data.specialChart.debugDescription.isEmpty {
                partialString = partialString.replacingOccurrences(of: data.specialChart, with: "") as NSString
            }
            if (Int(partialString.debugDescription) ?? 0 < data.minValue ||
                Int(partialString.debugDescription) ?? 0 > data.maxValue) {
                return false
            }
        }
        
        let newRange: NSRange = proposedSelRangePtr!.pointee
        if (NSMaxRange(origSelRange) > NSMaxRange(newRange)) {
            return true
        }
        return true
    }
    
    override func attributedString(for obj: Any, withDefaultAttributes attrs: [NSAttributedString.Key : Any]? = nil) -> NSAttributedString? {
        return nil
    }
}