package net.sourceforge.fenixedu.dataTransferObject;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import net.sourceforge.fenixedu.domain.DomainObject;
import net.sourceforge.fenixedu.domain.DomainReference;
import pt.utl.ist.fenix.tools.file.FileSearchCriteria;
import pt.utl.ist.fenix.tools.file.FileSearchCriteria.SearchField;
import pt.utl.ist.fenix.tools.file.FilesetMetadataQuery.ConjunctionType;

public class SearchDSpaceBean implements Serializable {

    protected static final int pageSize = 15;

    List<SearchElement> searchElements;
    List<DomainReference> results;

    private int page;
    private int totalItems;
    private int numberOfPages;

    public SearchDSpaceBean() {
	this.searchElements = new ArrayList<SearchElement>();
	this.results = null;
	this.page = 1;
	this.totalItems = 0;
	this.numberOfPages = 1;
    }

    public int getPageSize() {
	return pageSize;
    }

    public int getSearchElementsSize() {
	return this.searchElements.size();
    }

    public List<SearchElement> getSearchElements() {
	return searchElements;
    }

    public void setSearchElements(List<SearchElement> searchElements) {
	this.searchElements = searchElements;
    }

    public void addSearchElement() {
	this.searchElements.add(SearchElement.emptySearchElement());
    }

    public void addSearchElement(Integer index) {
	this.searchElements.add(index, SearchElement.emptySearchElement());
    }

    public void addSearchElement(SearchElement element) {
	this.searchElements.add(element);
    }

    public void removeSearchElement(int i) {
	this.searchElements.remove(i);
    }

    public String getSearchElementsAsParameters() {
	String parameters = "";

	for (SearchElement element : getSearchElements()) {
	    parameters += "&amp;criteria=" + element.getConjunction() + ":" + element.getSearchField() + ":"
		    + element.getQueryValue();
	}
	return parameters;
    }

    public FileSearchCriteria getSearchCriteria(int start) {
	FileSearchCriteria criteria = new FileSearchCriteria(start, pageSize);
	List<SearchElement> elements = getSearchElements();

	if (hasSearchElements()) {

	    for (SearchElement element : elements) {
		if (element.getConjunction().equals(ConjunctionType.AND)) {
		    criteria.addAndCriteria(element.getSearchField(), element.getQueryValue());
		}
		if (element.getConjunction().equals(ConjunctionType.OR)) {
		    criteria.addOrCriteria(element.getSearchField(), element.getQueryValue());
		}
	    }
	}
	return criteria;
    }

    protected boolean hasSearchElements() {
	for (SearchElement element : getSearchElements()) {
	    if (element.queryValue.length() > 0)
		return true;
	}
	return false;
    }

    public void setResults(List<DomainObject> results) {
	this.results = new ArrayList<DomainReference>();
	for (DomainObject result : results) {
	    this.results.add(new DomainReference(result));
	}
    }

    public List<DomainObject> getResults() {
	if (this.results == null)
	    return null;
	List<DomainObject> objects = new ArrayList<DomainObject>();
	for (DomainReference reference : this.results) {
	    objects.add(reference.getObject());
	}
	return objects;
    }

    public static class SearchElement implements Serializable {
	private SearchField field;
	private String queryValue;
	private ConjunctionType conjunction;

	private SearchElement() {
	    super();
	}

	public SearchElement(SearchField field, String queryValue, ConjunctionType type) {
	    this();
	    this.field = field;
	    this.queryValue = queryValue;
	    this.conjunction = type;
	}

	public SearchField getSearchField() {
	    return (this.field != null) ? this.field : SearchField.ANY;
	}

	public void setSearchField(SearchField field) {
	    this.field = field;
	}

	public String getQueryValue() {
	    return this.queryValue;
	}

	public void setQueryValue(String queryValue) {
	    this.queryValue = queryValue;
	}

	public static SearchElement emptySearchElement() {
	    return new SearchElement(SearchField.ANY, " ", ConjunctionType.AND);
	}

	public ConjunctionType getConjunction() {
	    return conjunction;
	}

	public void setConjunction(ConjunctionType type) {
	    this.conjunction = type;
	}
    }

    public int getNumberOfPages() {
	return numberOfPages;
    }

    public void setNumberOfPages(int numberOfPages) {
	this.numberOfPages = numberOfPages;
    }

    public int getPage() {
	return page;
    }

    public void setPage(int page) {
	this.page = page;
    }

    public int getTotalItems() {
	return totalItems;
    }

    public void setTotalItems(int totalItems) {
	this.totalItems = totalItems;
    }

}