//
//  ViewController.swift
//  The Test Taker

//

import UIKit

class ViewController: UIViewController {
    
    @IBOutlet weak var questionLabel: UILabel!
    
    
    @IBOutlet weak var questionTextView: UITextView!
    
    
    @IBOutlet weak var answerLabel: UILabel!
    
    
    @IBOutlet weak var answerTextField: UITextField!
    
    
    @IBOutlet weak var scoreLabel: UILabel!
    
    
    var currentQuestion = 0;
    
    var questions = [String]()
    
    var correctAnswers = [String]()
    
    var usersAnswers = [String]()
    
    
    func updateScoreLabel()
        
    {
        // FINISH ME
        // create a variable called numCorrect
        // assign to numCorrect the number of
        // questions answered correctly
        // call getNumCorrect()
        let ?????? = ????????
        

        // FINISH ME
        // create a variable called numQuestions
        // assign to numQuestions the number of
        // questions
        // use questions.????
        let ???????? = questions.??????
        
        
        // FINISH ME
        // create a variable called pct
        // and store the percent correct
        // call getPCT
        let ??? = ?????
        
        
        // FINISH ME
        // store in the text field something like:
        // Score: 3/4  75%
        // 3 is the numCorrect, 4 is the numQuestions, and 75 is the pct
        scoreLabel.???? = "Score: \(??????)/\(???????)  \(???)%"
        
    }
    
    
    func getPCT() -> Double
    {
        
        // FINISH ME
        // create a variable called numCorrect
        let ??????? = getNumCorrect()
        
        
        // FINISH ME
        // convert numCorrect to a Double
        let pct = Double(????) / Double(questions.count) * 100
        
        
        // FINISH ME
        // return the pct        
        ??????
    }
    
    
    
    @IBAction func updateScoreButtonEvent(_ sender: UIButton)
    {
        
        usersAnswers[currentQuestion] = answerTextField.text!
        
        // FINISH ME
        // call updateScoreLabel()
        ?????????
        
    }
    
    
    func getNumCorrect() -> Int
     {
        
        // FINISH ME
        // create a variable called numCorrect and
        //    set it to 0
        var ???????
        
        // FINISH ME
        // LOOP from 0..<questions.count
        for i in ????????????
        {
        	// FINISH ME
            // see if this ith question is correct
            if correctAnswers[i] ?? usersAnswers[i]
            {
                // FINISH ME
                // add 1 to numCorrect
                numCorrect = ????????
            }
        }
        
        // FINISH ME
        // return the numCorrect
        ??????
    }
    
    
    func showQuestion()
    {
        // FINISH ME
        // set questionLabel to say
        // "Question ?" where ? is
        // the currentQuestion + 1
        questionLabel.???? = "Question \(????????)"


        // FINISH ME
        // set questionTextView to show
        // the currentQuestion
        questionTextView.???? = "\(questions[??????????])"

        
        // FINISH ME
        // set answerLabel to say
        // "Answer ?" where ? is
        // the currentQuestion + 1
        answerLabel.????? = "Answer \(?????)"
        

        // FINISH ME
        // set answerTextField to show
        // the user's answer
        answerTextField.???? = "\(usersAnswers[????????])"
        
        

        // FINISH ME
        // set scoreLabel to show
        // the score as shown
        // call the function updateScoreLabel()
        ?????????
    }
    
    
    @IBAction func firstButtonEvent(_ sender: UIButton)
    {
        // FINISH ME
        // save the answerTextField.text!
        // in usersAnswers[?] where
        // ? is the currentQuestion
        usersAnswers[?] = ???????
        
        // FINISH ME
        // update the score label
        // call a function
        ?????
        

        // FINISH ME
        // set currentQuestion to 0
        ???????


        // FINISH ME
        // set answerTextField to
        // usersAnswers[currentQuestion]
        answerTextField.???? = ???????

        
        // FINISH ME
        // call a method to show the question
        ???????
    }
    
    
    @IBAction func prevButtonEvent(_ sender: UIButton)
    {
        // FINISH ME
        // save the answerTextField.text!
        // in usersAnswers[?] where
        // ? is the currentQuestion
        usersAnswers[????] = ??????
        

        // FINISH ME
        // update the score label
        // call a function
        ???????
        

        // FINISH ME
        // subtract 1 from currentQuestion
        currentQuestion = ???????
        
        
        
        // FINISH ME
        // see if currentQuestion is less than 0
        ?? ????????
        {
            // FINISH ME
            // set currentQuestion to 0
            ???????
        }
        
        
        
        // FINISH ME
        // set answerTextField to
        // usersAnswers[currentQuestion]
        answerTextField.???? = ???????
        
        
        // FINISH ME
        // call a method to show the question
        ?????
    }
    
    
    @IBAction func nextButtonEvent(_ sender: UIButton)
    {
        // FINISH ME
        // save the answerTextField.text!
        // in usersAnswers[?] where
        // ? is the currentQuestion
        usersAnswers[?] = ?????
        
        
        // FINISH ME
        // update the score label
        // call a functioin
        ??????
        
        
        // FINISH ME
        // add 1 to currentQuestion
        currentQuestion = ?????

        
        // FINISH ME
        // see if currentQuestion greater than
        // or equal to questions.count
        ?? ????????
        {
            // FINISH ME
            // set currentQuestion to questions.count - 1
            currentQuestion =  ??????
        }
        
        
        
        // FINISH ME
        // set answerTextField to
        // usersAnswers[currentQuestion]
        answerTextField.???? = ?????
        
        
        // FINISH ME
        // call a method to show the question
        ???????
    }
    
    
    @IBAction func lastButtonEvent(_ sender: UIButton)
    {
        // FINISH ME
        // save the answerTextField.text!
        // in usersAnswers[?] where
        // ? is the currentQuestion
        usersAnswers[?] = ???????
        
        
        // FINISH ME
        // update the score label
        // call a function
        ??????
        
        
        // FINISH ME
        // set currentQuestion to the last question
        // number of elements - 1
        currentQuestion = ????
        
        
        // FINISH ME
        // set answerTextField to
        // usersAnswers[currentQuestion]
        answerTextField.???? = ??????
        
        
        // FINISH ME
        // call a method to show the question
        ???????


    }

    
    override func viewDidLoad()
    {
        
        super.viewDidLoad()
        
        
        // 1st question (0 position)
        // you may modify this question
        questions.append("3 + 7 is ")
        correctAnswers.append("10")
        usersAnswers.append("")
        
        
        // FINISH ME
        // add 4 more questions
 
 
         
        // FINISH ME
        // show the question (call a method)
        ??????
    }
}