package eu.crushedpixel.replaymod.gui.replaystudio;

import java.awt.Color;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiButton;

import org.apache.commons.io.FilenameUtils;

import eu.crushedpixel.replaymod.gui.GuiConstants;
import eu.crushedpixel.replaymod.gui.elements.GuiArrowButton;
import eu.crushedpixel.replaymod.gui.elements.GuiDropdown;
import eu.crushedpixel.replaymod.gui.elements.GuiEntryList;
import eu.crushedpixel.replaymod.gui.elements.listeners.SelectionListener;
import eu.crushedpixel.replaymod.registry.ReplayGuiRegistry;
import eu.crushedpixel.replaymod.utils.ReplayFileIO;

public class GuiConnectPart extends GuiStudioPart {

	private static final String DESCRIPTION = "Connects multiple Replays in the same order as the list.";
	private static final String TITLE = "Connect Replays";

	private boolean initialized = false;

	private GuiEntryList<String> concatList;
	private GuiDropdown<String> replayDropdown;

	private GuiButton removeButton, addButton;
	private GuiArrowButton upButton, downButton;

	private List<File> replayFiles;
	private List<String> filesToConcat;

	public GuiConnectPart(int yPos) {
		super(yPos);
		this.mc = Minecraft.getMinecraft();
		fontRendererObj = mc.fontRendererObj;
	}


	@Override
	public void applyFilters(File replayFile, File outputFile) {
		// TODO Auto-generated method stub
		
	}
	
	@Override
	public String getDescription() {
		return DESCRIPTION;
	}

	@Override
	public String getTitle() {
		return TITLE;
	}

	@Override
	public void initGui() {
		if(!initialized) {
			concatList = new GuiEntryList(1, fontRendererObj, 30, yPos, 150, 0);
			filesToConcat = new ArrayList<String>();
			String selectedName = FilenameUtils.getBaseName(GuiReplayStudio.instance.getSelectedFile().getAbsolutePath());
			filesToConcat.add(selectedName);
			concatList.setElements(filesToConcat);

			concatList.setSelectionIndex(0);

			replayDropdown = new GuiDropdown(1, fontRendererObj, 250, yPos+5, 0, 4);

			replayDropdown.clearElements();
			replayFiles = ReplayFileIO.getAllReplayFiles();
			int index = -1;
			int i=0;
			for(File file : replayFiles) {
				String name = FilenameUtils.getBaseName(file.getAbsolutePath());
				replayDropdown.addElement(name);
				if(name.equals(selectedName)) {
					index = i;
				}
				i++;
			}

			replayDropdown.setSelectionPos(index);

			replayDropdown.addSelectionListener(new SelectionListener() {

				@Override
				public void onSelectionChanged(int selectionIndex) {
					try {
						filesToConcat.set(concatList.getSelectionIndex(), (String)replayDropdown.getElement(selectionIndex));
						concatList.setElements(filesToConcat);
					} catch(Exception e) {} //Sorry, too lazy to properly avoid this Exception here
				}
			});

			concatList.addSelectionListener(new SelectionListener() {	
				@Override
				public void onSelectionChanged(int selectionIndex) {
					String selName = (String)concatList.getElement(selectionIndex);
					int i = 0;
					for(Object s : replayDropdown.getAllElements()) {
						String str = (String)s;
						if(str.equals(selName)) {
							replayDropdown.setSelectionIndex(i);
							break;
						}
						i++;
					}
					removeButton.enabled = upButton.enabled = downButton.enabled = !(selectionIndex < 0 || selectionIndex >= filesToConcat.size());
					if(upButton.enabled && selectionIndex == 0) upButton.enabled = false;
					if(downButton.enabled && selectionIndex == filesToConcat.size()-1) downButton.enabled = false;
				}
			});

			upButton = new GuiArrowButton(GuiConstants.REPLAY_EDITOR_UP_BUTTON, 195, yPos+40, "", true);
			buttonList.add(upButton);

			downButton = new GuiArrowButton(GuiConstants.REPLAY_EDITOR_DOWN_BUTTON, 219, yPos+40, "", false);
			buttonList.add(downButton);

			int w = GuiReplayStudio.instance.width-243-20-4;

			removeButton = new GuiButton(GuiConstants.REPLAY_EDITOR_REMOVE_BUTTON, 249, yPos+40, "Remove");
			buttonList.add(removeButton);

			addButton = new GuiButton(GuiConstants.REPLAY_EDITOR_ADD_BUTTON, 0, yPos+40, "Add");
			buttonList.add(addButton);

			concatList.setSelectionIndex(0);
		}

		int w = GuiReplayStudio.instance.width-249-20-4;
		addButton.xPosition = 249+6+(w/2);

		addButton.width = w/2+2;
		removeButton.width = w/2+2;

		replayDropdown.width = GuiReplayStudio.instance.width-250-18;

		int h = GuiReplayStudio.instance.height-yPos-20;
		int rows = (int)(h / (float)GuiEntryList.elementHeight);
		concatList.setVisibleElements(rows);

		initialized = true;
	}

	@Override
	public void mouseClicked(int mouseX, int mouseY, int mouseButton) throws IOException {
		super.mouseClicked(mouseX, mouseY, mouseButton); //call this first to ensure the dropdown is still open
		concatList.mouseClicked(mouseX, mouseY, mouseButton);
		replayDropdown.mouseClicked(mouseX, mouseY, mouseButton);
	}

	@Override
	public void drawScreen(int mouseX, int mouseY, float partialTicks) {
		super.drawScreen(mouseX, mouseY, partialTicks);
		concatList.drawTextBox();
		replayDropdown.drawTextBox();

		drawString(fontRendererObj, "Replay:", 200, yPos+5+7, Color.WHITE.getRGB());
	}

	@Override
	public void updateScreen() {
		if(!initialized) initGui();
	}

	@Override
	public void keyTyped(char typedChar, int keyCode) {

	}

	@Override
	protected void actionPerformed(GuiButton button) {
		if(!button.enabled || replayDropdown.isExpanded()) {
			return;
		}

		if(button.id == GuiConstants.REPLAY_EDITOR_ADD_BUTTON) {
			filesToConcat.add(FilenameUtils.getBaseName(replayFiles.get(0).getAbsolutePath()));
			concatList.setElements(filesToConcat);
			concatList.setSelectionIndex(filesToConcat.size()-1);
		} else if(button.id == GuiConstants.REPLAY_EDITOR_REMOVE_BUTTON) {
			int indexBefore = concatList.getSelectionIndex();
			if(indexBefore >= 0 && indexBefore < filesToConcat.size()) {
				filesToConcat.remove(indexBefore);
				concatList.setElements(filesToConcat);
				if(filesToConcat.size() <= indexBefore) {
					concatList.setSelectionIndex(filesToConcat.size()-1);
				} else {
					concatList.setSelectionIndex(indexBefore);
				}
			}
		}
	}
}