//
//  ViewController.swift
//  Validator
//
//  Created by Jeff Potter on 11/20/14.
//  Copyright (c) 2014 jpotts18. All rights reserved.
//

import Foundation
import UIKit


class ViewController: UIViewController , ValidationDelegate, UITextFieldDelegate {

    // TextFields
    @IBOutlet weak var fullNameTextField: UITextField!
    @IBOutlet weak var emailTextField: UITextField!
    @IBOutlet weak var phoneNumberTextField: UITextField!
    @IBOutlet weak var zipcodeTextField: UITextField!
    @IBOutlet weak var emailConfirmTextField: UITextField!
    
    // Error Labels
    @IBOutlet weak var fullNameErrorLabel: UILabel!
    @IBOutlet weak var emailErrorLabel: UILabel!
    @IBOutlet weak var phoneNumberErrorLabel: UILabel!
    @IBOutlet weak var zipcodeErrorLabel: UILabel!
    @IBOutlet weak var emailConfirmErrorLabel: UILabel!
    
    let validator = Validator()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        
        validator.registerField(fullNameTextField, errorLabel: fullNameErrorLabel , rules: [RequiredRule(), FullNameRule()])
        validator.registerField(emailTextField, errorLabel: emailErrorLabel, rules: [RequiredRule(), EmailRule()])
        validator.registerField(emailConfirmTextField, errorLabel: emailConfirmErrorLabel, rules: [RequiredRule(), ConfirmationRule(confirmField: emailTextField)])
        validator.registerField(phoneNumberTextField, errorLabel: phoneNumberErrorLabel, rules: [RequiredRule(), MinLengthRule(length: 9)])
        validator.registerField(zipcodeTextField, errorLabel: zipcodeErrorLabel, rules: [RequiredRule(), ZipCodeRule()])
        
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
        
    }

    @IBAction func submitTapped(sender: AnyObject) {
        println("Validating...")
        self.clearErrors()
        validator.validateAll(self)
    }
    
    // MARK: Error Styling

    func removeError(label:UILabel, textField:UITextField) {
        label.hidden = true
        textField.layer.borderWidth = 0.0
    }
    
    func removeAllErrors(){
        removeError(fullNameErrorLabel, textField: fullNameTextField)
        removeError(emailErrorLabel, textField: emailTextField)
        removeError(phoneNumberErrorLabel, textField: phoneNumberTextField)
        removeError(zipcodeErrorLabel, textField: zipcodeTextField)
    }
    
    // MARK: ValidationDelegate Methods
    
    func validationWasSuccessful() {
        println("Validation Success!")
        var alert = UIAlertController(title: "Success", message: "You are validated!", preferredStyle: UIAlertControllerStyle.Alert)
        var defaultAction = UIAlertAction(title: "OK", style: .Default, handler: nil)
        alert.addAction(defaultAction)
        self.presentViewController(alert, animated: true, completion: nil)
    
    }
    func validationFailed(errors:[UITextField:ValidationError]) {
        println("Validation FAILED!")
        self.setErrors()
    }
    
    private func setErrors(){
        for (field, error) in validator.errors {
            field.layer.borderColor = UIColor.redColor().CGColor
            field.layer.borderWidth = 1.0
            error.errorLabel?.text = error.errorMessage
            error.errorLabel?.hidden = false
        }
    }
    
    private func clearErrors(){
        for (field, error) in validator.errors {
            field.layer.borderWidth = 0.0
            error.errorLabel?.hidden = true
        }
    }

}