/**
 *
 */
package org.gcube.portlets.user.geoportaldataentry.client.ui.table;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Date;
import java.util.List;
import java.util.Set;

import org.gcube.application.geoportalcommon.ConvertToDataViewModel;
import org.gcube.application.geoportalcommon.shared.products.ConcessioneDV;
import org.gcube.application.geoportalcommon.shared.products.model.ValidationReportDV;
import org.gcube.application.geoportalcommon.shared.products.model.ValidationReportDV.ValidationStatus;
import org.gcube.portlets.user.geoportaldataentry.client.ConstantsGeoPortalDataEntryApp.ACTION_ON_ITEM;
import org.gcube.portlets.user.geoportaldataentry.client.ConstantsGeoPortalDataEntryApp.RECORD_FIELD;
import org.gcube.portlets.user.geoportaldataentry.client.events.ActionOnItemEvent;
import org.gcube.portlets.user.geoportaldataentry.shared.SortFilter;

import com.github.gwtbootstrap.client.ui.ButtonCell;
import com.github.gwtbootstrap.client.ui.Pagination;
import com.github.gwtbootstrap.client.ui.constants.IconType;
import com.google.gwt.cell.client.Cell.Context;
import com.google.gwt.cell.client.DateCell;
import com.google.gwt.cell.client.FieldUpdater;
import com.google.gwt.core.shared.GWT;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.i18n.client.DateTimeFormat;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.user.cellview.client.Column;
import com.google.gwt.user.cellview.client.ColumnSortEvent;
import com.google.gwt.user.cellview.client.ColumnSortList.ColumnSortInfo;
import com.google.gwt.user.cellview.client.SimplePager;
import com.google.gwt.user.cellview.client.TextColumn;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.view.client.AbstractDataProvider;
import com.google.gwt.view.client.ListDataProvider;
import com.google.gwt.view.client.MultiSelectionModel;
import com.google.gwt.view.client.SelectionModel;
import com.google.gwt.view.client.SingleSelectionModel;

/**
 * The Class ItemsTable.
 *
 * @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
 * 
 *         Jun 15, 2021
 * @param <T> the generic type
 */
public class ItemsTable<T extends ConcessioneDV> extends AbstractItemsCellTable<T> {

	private static final int ITEMS_PER_PAGE = 10;
	private static final String NO_DATA = "No data";
	private TextColumn<T> name;
	private TextColumn<T> introduction;
	private TextColumn<T> author;
	public static DateTimeFormat dtformat = DateTimeFormat.getFormat(ConvertToDataViewModel.DATE_FORMAT);

	private AbstractDataProvider<T> dataProvider;

	private List<RECORD_FIELD> displayFields;
	private TextColumn<T> startEndProjectColumn;
	private TextColumn<T> statusColumn;
	// private Column<T, Date> startProjectDateColumn;
	// private Column<T, Date> endProjectDateColumn;
	private boolean isAsyncronusTable;
	private TextColumn<T> insertedBy;
	private Column<T, Date> createdColumn;
	private SortFilter currentSortFilter;

	/**
	 * Instantiates a new items table.
	 *
	 * @param eventBus          the event bus
	 * @param displayFields     the display fields
	 * @param startSortByColumn the start sort by column
	 */
	public ItemsTable(HandlerManager eventBus, RECORD_FIELD[] displayFields, SortFilter currentSortFilter) {
		this.eventBus = eventBus;
		this.currentSortFilter = currentSortFilter;
		setDisplayFields(displayFields);
	}

	/**
	 * Adds the items.
	 *
	 * @param items the items
	 */
	public void addItems(List<T> items) {
		super.addItems(items);
	}

	/**
	 * Inits the table.
	 *
	 * @param pager        the pager
	 * @param pagination   the pagination
	 * @param dataProvider the data provider
	 */
	@Override
	public void initTable(final SimplePager pager, final Pagination pagination, AbstractDataProvider<T> dataProvider) {
		this.dataProvider = dataProvider;
		this.theSelectionModel = new SingleSelectionModel<T>();
		initAbstractTable(eventBus, fireEventOnClick, dataProvider, theSelectionModel, ITEMS_PER_PAGE);
		this.dataProvider.addDataDisplay(sortedCellTable);

		this.isAsyncronusTable = dataProvider instanceof ListDataProvider ? false : true;
		setEmptyTableMessage(NO_DATA);

		if (this.displayFields.contains(RECORD_FIELD.NAME)) {

			// NAME
			name = new TextColumn<T>() {
				@Override
				public String getValue(T object) {
					if (object == null)
						return "";
					return ((ConcessioneDV) object).getNome();
				}

				// ADDING TOOLTIP
				@Override
				public void render(com.google.gwt.cell.client.Cell.Context context, T object, SafeHtmlBuilder sb) {
					if (object == null)
						return;
					sb.appendHtmlConstant("<div introduction=\"" + ((ConcessioneDV) object).getNome() + "\">");
					super.render(context, object, sb);
					sb.appendHtmlConstant("</div>");
				};
			};

			sortedCellTable.addColumn(name, RECORD_FIELD.NAME.getDisplayName(), true);

			if (!isAsyncronusTable) {
				Comparator<T> c = new Comparator<T>() {
					@Override
					public int compare(T o1, T o2) {
						return ((ConcessioneDV) o1).getNome().compareTo(((ConcessioneDV) o2).getNome());
					}
				};

				sortedCellTable.setComparator(name, c);
			}

		}

		if (this.displayFields.contains(RECORD_FIELD.INTRODUCTION)) {

			introduction = new TextColumn<T>() {
				@Override
				public String getValue(T object) {
					if (object == null)
						return "";
					return ((ConcessioneDV) object).getIntroduzione() != null
							? ((ConcessioneDV) object).getIntroduzione()
							: "";
				}
			};

			sortedCellTable.addColumn(introduction, RECORD_FIELD.INTRODUCTION.getDisplayName(), true);

			if (!isAsyncronusTable) {
				Comparator<T> c = new Comparator<T>() {
					@Override
					public int compare(T o1, T o2) {
						return ((ConcessioneDV) o1).getIntroduzione().compareTo(((ConcessioneDV) o2).getIntroduzione());
					}
				};
				sortedCellTable.setComparator(introduction, c);
			}

			// sortedCellTable.setColumnWidth(introduction, 100, Unit.PCT);

		}

		if (this.displayFields.contains(RECORD_FIELD.AUTHOR)) {

			author = new TextColumn<T>() {
				@Override
				public String getValue(T object) {
					if (object == null)
						return "";

					String toDisplay = toDisplayAuthors(((ConcessioneDV) object).getAuthors());
					return toDisplay;
				}
			};

			sortedCellTable.addColumn(author, RECORD_FIELD.AUTHOR.getDisplayName(), true);

			if (!isAsyncronusTable) {
				Comparator<T> c = new Comparator<T>() {
					@Override
					public int compare(T o1, T o2) {
						String toDisplay1 = toDisplayAuthors(((ConcessioneDV) o1).getAuthors());
						String toDisplay2 = toDisplayAuthors(((ConcessioneDV) o2).getAuthors());
						return toDisplay1.compareTo(toDisplay2);
					}
				};
				sortedCellTable.setComparator(author, c);
			}

			sortedCellTable.setColumnWidth(author, 220, Unit.PX);

		}

		if (this.displayFields.contains(RECORD_FIELD.PROJECT_START_END_DATE)) {

			startEndProjectColumn = new TextColumn<T>() {
				@Override
				public String getValue(T object) {
					if (object == null)
						return "";

					Date dS = (((ConcessioneDV) object).getDataInizioProgetto());
					Date dE = (((ConcessioneDV) object).getDataFineProgetto());
					return dtformat.format(dS) + " / " + dtformat.format(dE);
				}
			};

			sortedCellTable.addColumn(startEndProjectColumn, RECORD_FIELD.PROJECT_START_END_DATE.getDisplayName(),
					false);
			sortedCellTable.setColumnWidth(startEndProjectColumn, 180, Unit.PX);

		}

		if (this.displayFields.contains(RECORD_FIELD.CREATED)) {

			DateCell date = new DateCell(dtformat);
			createdColumn = new Column<T, Date>(date) {

				@Override
				public Date getValue(T object) {
					if (object == null)
						return null;

					return (((ConcessioneDV) object).getCreationTime());
				}
			};
			sortedCellTable.addColumn(createdColumn, RECORD_FIELD.CREATED.getDisplayName(), true);

			if (!isAsyncronusTable) {
				Comparator<T> c = new Comparator<T>() {
					@Override
					public int compare(T o1, T o2) {
						if (o1 == null)
							return -1;

						if (o2 == null)
							return 1;

						Date d1 = (((ConcessioneDV) o1).getCreationTime());
						Date d2 = (((ConcessioneDV) o2).getCreationTime());

						// GWT.log(d1.toString() + "is after "+d2.toString() +" ? "+d2.after(d1));

						if (d1.after(d2))
							return 1;
						else
							return -1;
					}
				};
				GWT.log("date colum sortable");
				sortedCellTable.setComparator(createdColumn, c);
			}

			sortedCellTable.setColumnWidth(createdColumn, 150, Unit.PX);

		}

		if (this.displayFields.contains(RECORD_FIELD.CREATED_BY)) {

			// NAME
			insertedBy = new TextColumn<T>() {
				@Override
				public String getValue(T object) {
					if (object == null)
						return "";
					return ((ConcessioneDV) object).getCreationUser();
				}
			};

			sortedCellTable.addColumn(insertedBy, RECORD_FIELD.CREATED_BY.getDisplayName(), true);

			if (!isAsyncronusTable) {
				Comparator<T> c = new Comparator<T>() {
					@Override
					public int compare(T o1, T o2) {
						return ((ConcessioneDV) o1).getCreationUser().compareTo(((ConcessioneDV) o2).getCreationUser());
					}
				};

				sortedCellTable.setComparator(insertedBy, c);
			}
			sortedCellTable.setColumnWidth(insertedBy, 220, Unit.PX);
		}

		if (this.displayFields.contains(RECORD_FIELD.PUBLISHING_STATUS)) {

			statusColumn = new TextColumn<T>() {
				@Override
				public String getValue(T object) {
					if (object == null)
						return "";

					ValidationReportDV vr = ((ConcessioneDV) object).getValidationReport();
					if (vr != null && vr.getStatus() != null)
						return vr.getStatus().getLabel();
					return "";
				}

				@Override
				public void render(Context context, T object, SafeHtmlBuilder sb) {
					// TODO Auto-generated method stub

					String value = getValue(object);
					String color = "#000";
					if (value.compareTo(ValidationStatus.PASSED.getLabel()) == 0) {
						color = "#32CD32";
					} else if (value.compareTo(ValidationStatus.WARNING.getLabel()) == 0) {
						color = "#FF8000";
					} else if (value.compareTo(ValidationStatus.ERROR.getLabel()) == 0) {
						color = "red";
					}
					sb.appendHtmlConstant("<span style=\"color:" + color + "\";>");
					super.render(context, object, sb);
					sb.appendHtmlConstant("</span>");

				}
			};

			sortedCellTable.addColumn(statusColumn, RECORD_FIELD.PUBLISHING_STATUS.getDisplayName(), false);
			sortedCellTable.setColumnWidth(statusColumn, 120, Unit.PX);

		}

		ButtonCell showOnMapButton = new ButtonCell();
		showOnMapButton.setIcon(IconType.MAP_MARKER);

		MyToolTipColumn<T, String> showOnMapColumn = new MyToolTipColumn<T, String>(showOnMapButton, "Show on Map") {

			@Override
			public String getValue(T object) {
				return "";
			}
		};

		showOnMapColumn.setFieldUpdater(new FieldUpdater<T, String>() {
			@Override
			public void update(int index, T object, String value) {
				GWT.log("clicked show");
				eventBus.fireEvent(new ActionOnItemEvent<T>(Arrays.asList(object), ACTION_ON_ITEM.SHOW_ON_MAP));
			}
		});
		sortedCellTable.addColumn(showOnMapColumn);
		sortedCellTable.setColumnWidth(showOnMapColumn, 50, Unit.PX);

		ButtonCell showReportRecordButton = new ButtonCell();
		showReportRecordButton.setIcon(IconType.FILE_TEXT_ALT);
		MyToolTipColumn<T, String> showReportRecordColumn = new MyToolTipColumn<T, String>(showReportRecordButton,
				"Show Publication Report") {
			public String getValue(T object) {
				return "";
			}
		};

		showReportRecordColumn.setFieldUpdater(new FieldUpdater<T, String>() {
			@Override
			public void update(int index, T object, String value) {

				eventBus.fireEvent(new ActionOnItemEvent<T>(Arrays.asList(object), ACTION_ON_ITEM.SHOW_REPORT));
			}
		});
		sortedCellTable.addColumn(showReportRecordColumn);
		sortedCellTable.setColumnWidth(showReportRecordColumn, 50, Unit.PX);

		ButtonCell deleteRecordButton = new ButtonCell();
		deleteRecordButton.setIcon(IconType.TRASH);
		MyToolTipColumn<T, String> deleteRecordColumn = new MyToolTipColumn<T, String>(deleteRecordButton,
				"Delete Project") {
			public String getValue(T object) {
				return "";
			}
		};

		deleteRecordColumn.setFieldUpdater(new FieldUpdater<T, String>() {
			@Override
			public void update(int index, T object, String value) {

				eventBus.fireEvent(new ActionOnItemEvent<T>(Arrays.asList(object), ACTION_ON_ITEM.REMOVE));
			}
		});
		sortedCellTable.addColumn(deleteRecordColumn);
		sortedCellTable.setColumnWidth(deleteRecordColumn, 50, Unit.PX);

		GWT.log("currentSortFilter: " + currentSortFilter);

		if (currentSortFilter != null)
			switch (currentSortFilter.getOrderByField()) {
			case NAME:
				if (this.displayFields.contains(RECORD_FIELD.NAME)) {
					sortedCellTable.setInitialSortColumn(name);
				}
				break;
			case INTRODUCTION:
				if (this.displayFields.contains(RECORD_FIELD.INTRODUCTION)) {
					sortedCellTable.setInitialSortColumn(introduction);
				}
				break;
			case AUTHOR:
				if (this.displayFields.contains(RECORD_FIELD.AUTHOR)) {
					sortedCellTable.setInitialSortColumn(author);
				}
				break;
			default:
				break;
			}

	}

	/**
	 * To display authors.
	 *
	 * @param authors the authors
	 * @return the string
	 */
	private String toDisplayAuthors(List<String> authors) {
		String toDisplay = "";
		if (authors == null)
			return toDisplay;

		for (String author : authors) {
			toDisplay += author + "; ";
		}
		return toDisplay;
	}

	/**
	 * Displays the appropriate sorted icon in the header of the column for the
	 * given index.
	 *
	 * @param columnIndex of the column to mark as sorted
	 * @param ascending   <code>true</code> for ascending icon, <code>false</code>
	 *                    for descending icon
	 */
	public void setSortedColumn(int columnIndex, boolean ascending) {
		GWT.log("Column index: " + columnIndex);
		GWT.log("ascending: " + ascending);
		Column<T, ?> column = sortedCellTable.getColumn(columnIndex);
		if (column != null && column.isSortable()) {
			ColumnSortInfo info = sortedCellTable.getColumnSortList().push(column);
//	           ColumnSortEvent.fire(cellTable, cellTable.getColumnSortList());
			GWT.log("info.isAscending(): " + info.isAscending());
			if (info.isAscending() != ascending) {
				sortedCellTable.getColumnSortList().push(column);
				ColumnSortEvent.fire(sortedCellTable, sortedCellTable.getColumnSortList());
			}
		}
	}

	/**
	 * Sets the display fields.
	 *
	 * @param fields the new display fields
	 */
	public void setDisplayFields(RECORD_FIELD[] fields) {
		this.displayFields = fields != null && fields.length > 0 ? Arrays.asList(fields)
				: Arrays.asList(RECORD_FIELD.values());
	}

	/**
	 * Reset columns table.
	 */
	public void reInitColumnsTable() {
		int count = sortedCellTable.getColumnCount();
		for (int i = 0; i < count; i++) {
			sortedCellTable.removeColumn(0);
		}
		initTable(null, null, dataProvider);
	}

	/**
	 * Gets the display fields.
	 *
	 * @return the displayFields
	 */
	public List<RECORD_FIELD> getDisplayFields() {
		return displayFields;
	}

	/**
	 * The Class ButtonImageCell.
	 *
	 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it Feb 1, 2016
	 */
	public class ButtonImageCell extends ButtonCell {

		/**
		 * Render.
		 *
		 * @param context the context
		 * @param value   the value
		 * @param sb      the sb
		 */
		/*
		 * (non-Javadoc)
		 * 
		 * @see
		 * com.google.gwt.cell.client.AbstractSafeHtmlCell#render(com.google.gwt.cell.
		 * client.Cell.Context, java.lang.Object,
		 * com.google.gwt.safehtml.shared.SafeHtmlBuilder)
		 */
		@Override
		public void render(com.google.gwt.cell.client.Cell.Context context, String value, SafeHtmlBuilder sb) {
			SafeHtml html = SafeHtmlUtils.fromTrustedString(new Image(value).toString());
			sb.append(html);
		}
	}

	/**
	 * Gets the selected item.
	 *
	 * @return the selected item
	 */
	public List<T> getSelectedItems() {
		if (theSelectionModel instanceof SingleSelectionModel) {
			T selected = ((SingleSelectionModel<T>) theSelectionModel).getSelectedObject();
			if (selected != null) {
				return Arrays.asList(selected);
			}

		} else if (theSelectionModel instanceof MultiSelectionModel) {
			Set<T> selected = ((MultiSelectionModel<T>) theSelectionModel).getSelectedSet();
			if (selected != null) {
				return new ArrayList<T>(selected);
			}
		}

		return null;
	}

	/**
	 * Sets the empty table message.
	 *
	 * @param msg the new empty table message
	 */
	public void setEmptyTableMessage(String msg) {
		msg = msg != null ? msg : NO_DATA;
		if (sortedCellTable != null)
			sortedCellTable.setEmptyTableWidget(new Label(msg));
	}

	/**
	 * Gets the selection model.
	 *
	 * @return the selection model
	 */
	public SelectionModel<T> getSelectionModel() {
		return theSelectionModel;
	}

}