package design.model.course_search;

import java.util.ArrayList;
import java.util.List;

import design.persistence.MasterDatabase;

/* 
 * Represents the state of our current search.
 */
public class CurrentSearchQuery {
    public static final CurrentSearchQuery INSTANCE = new CurrentSearchQuery();
    

    private CourseList query;
    MasterDatabase db = MasterDatabase.INSTANCE;
    private final List<CourseSorter> filters = new ArrayList<CourseSorter>();

    public void initialize()
    {
        query = db.getCourseList();
    }

    public void addFilter(CourseSorter filter)
    {
        filters.add(filter);
    }

    public void clearFilters()
    {
        filters.clear();
    }

    public String printFilters()
    {
        String filterResult = "";

        if(filters.size() == 0)
        {
            return "nothing";
        }

        for( CourseSorter f : filters)
        {
            filterResult += f.toString() + " --> ";
        }

        filterResult = filterResult.substring(0, filterResult.length() - 5);
        filterResult += "\n";

        return filterResult;
    }

    public List<CourseSorter> getFilters()
    {
        return filters;
    }

    public CourseList getQueryResult()
    {
        return query;
    }
}