using System;
using System.Collections.Generic;
using System.Text;

namespace ExaminationSystem.BLL.Domain
{
    public class Paper:DomainObject<long>
    {
        public int ScoreValue
        {
            get
            {
                int scoreValue = 0;
                foreach (QuestionContainer container in QuestionContainers)
                    scoreValue += container.ScoreValue;
                return scoreValue;

            }
        }
        public int Score
        {
            get
            {
                int score = 0;
                foreach (QuestionContainer container in QuestionContainers)
                    score += container.Score;
                return score;
            }
        }
        private IList<QuestionContainer> containers = new List<QuestionContainer>();

        public virtual IList<QuestionContainer> QuestionContainers
        {
            get { return containers; }
            set { containers = value; }
        }

        private Student student;

        public virtual Student Student
        {
            get { return student; }
            set { student = value; }
        }

        private Examination examination;

        public virtual Examination Examination
        {
            get { return examination; }
            set { examination = value; }
        }
        public override int GetHashCode()
        {
            return (GetType().FullName + "|" +
                Student.GetHashCode() + "|" +
                Examination.GetHashCode()).GetHashCode();
        }
        public string GetPaperXML()
        {
            StringBuilder builder = new StringBuilder(3000);
            builder.Append("<Paper PaperId=\""+this.ID+"\" Score=\"" + Score + "\" ScoreValue=\"" + ScoreValue + "\">");
            builder.Append("<Student ID=\""+Student.ID+"\" StudentId=\"" + Student.StudentID + "\" Name=\"" + Student.Name + "\"/>");
            builder.Append("<Examination Id=\""+Examination.ID+"\" Name=\"" + Examination.Name + "\" StartTime=\"" + Examination.StartTime + "\" EndTime=\"" + Examination.EndTime + "\"/>");
            foreach (QuestionContainer container in QuestionContainers)
                builder.Append(container.GetContainerXML());
            builder.Append("</Paper>");
            return builder.ToString();
        }
        public void AddQuestionContainer(QuestionContainer container)
        {
            QuestionContainers.Add(container);
            container.Paper = this;
        }


        private bool isSubmited;

        public virtual bool IsSubmited
        {
            get { return isSubmited; }
            set { isSubmited = value; }
        }
        public bool IsScored
        {
            get
            {
                foreach (QuestionContainer c in  QuestionContainers)
                {
                    if (c.IsScored == false)
                        return false;
                }
                return true;
            }
        }
        public void AutoScore()
        {
            foreach (QuestionContainer container in QuestionContainers)
            {
                foreach (Question quesiton in container.Questions)
                {
                    if (quesiton.Content is DanXuanContent || quesiton.Content is DuoXuanContent || quesiton.Content is PanDuanContent)
                    {
                        if (quesiton.Content.Answer == quesiton.StudentAnswer)
                        {
                            quesiton.Score = quesiton.ScoreValue;
                        }
                        else
                        {
                            quesiton.Score = 0;
                        }
                        quesiton.IsScored = true;
                    }
                }
            }
        }

    }
}