//
//  CharacterCountRule.swift
//  VDS
//
//  Created by Matt Bruce on 4/30/24.
//

import Foundation

class CharacterCountRule: Rule, Withable {
    enum CompareType {
        case equals, greaterThanEquals, lessThan, lessThanEquals
    }
    var maxLength: Int?
    var errorMessage: String = "You have exceeded the character limit."
    var compareType: CompareType = .lessThanEquals
    
    func isValid(value: String?) -> Bool {
        guard let text = value, let maxLength, maxLength > 0 else { return true }
        switch compareType {
        case .equals:
            return text.count == maxLength
            
        case .greaterThanEquals:
            return text.count >= maxLength
            
        case .lessThan:
            return text.count < maxLength
            
        case .lessThanEquals:
            return text.count <= maxLength
        }
    }
}