//---------------------------------------------------------------------------------------------------------------------------------------------------
// <copyright file="Survey.cs" company="DarkWynter Studios">
//     Copyright (C)2007 DarkWynter Studios.  All rights reserved.
// </copyright>
//---------------------------------------------------------------------------------------------------------------------------------------------------
// {Contact : darkwynter.com for licensing information
//---------------------------------------------------------------------------------------------------------------------------------------------------

using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using System.Xml;
using System.Diagnostics;

using Microsoft.Xna.Framework;

using DarkWynter.Engine.Init;
using DarkWynter.Engine.Globals;
using DarkWynter.Engine.Utilities;

namespace DarkWynter.App.Surveys
{
    public class Survey
    {
        public int ID;
        public static List<Question> questionList;
        public static List<XmlNode> SurveyList;
        public static string surveyName;

        public Survey(string xmlFile)
        {
            // Load the G2L PrePostSurvey
            SurveyList = new List<XmlNode>();
            try
            {
                // Load Surveys
                XmlDocument reader = new XmlDocument();
                reader.Load(xmlFile);
                XmlNodeList allNodes = reader.ChildNodes;
                foreach (XmlNode settingsNode in allNodes)
                {
                    if (settingsNode.Name == "QuestionSet")
                    {
                        if (settingsNode.Attributes["name"] != null)
                        {
                            surveyName = settingsNode.Attributes["name"].Value;

                            XmlNodeList settingsNodes = settingsNode.ChildNodes;
                            foreach (XmlNode node in settingsNodes)
                            {
                                if (node.Name == "ProblemSet")
                                {
                                    SurveyList.Add(node);
                                }
                            }
                        }
                    }
                }
            }
            catch
            {
                System.Diagnostics.Debug.WriteLine("Error reading xml");
                throw new Exception("Error reading XML");
            }


            questionList = new List<Question>();

            // Add all questions contained in this xml survey file
            for (int i = 0; i < SurveyList.Count; i++)
            {
                questionList.Add(new Question(SurveyList[i]));
            }
        }

        public string Validate()
        {

            string validationText = "";


            for (int x = 0; x < questionList.Count; x++)
            {
                bool answered = false;
                for (int i = 0; i < questionList[x].answers.Count; i++)
                {
                    if (questionList[x].answers[i].Checked)
                    {
                        answered = true;
                        break;
                    }
                }
                if (!answered)
                {
                    validationText += "Please answer question number: " + (x + 1) + "\n";
                }
            }
            return validationText;

        }
        public void Save()
        {
            Logging.G2LSurveyLog.Clear();
            for (int i = 0; i < questionList.Count; i++)
            {
                Logging.G2LSurveyLog.Add(questionList[i].problem.ToString());
                questionList[i].Save();
            }
            

        }

    }
}