package hu.NVL.NVLWarpdriveExtensions.client_only.gui_components;

import net.minecraft.client.gui.*;
import java.util.*;

public class NVLGuiListHelper
{
    private final int LINEHEIGHT = 11;
    public int listStartX;
    public int listStartY;
    public NVLGuiButton upButton;
    public NVLGuiButton downButton;
    public String prefix;
    public int top;
    public int left;
    public int width;
    public int height;
    public ArrayList<String> userList;
    public int barPos;
    public int startPos;
    private int baseID;
    protected String selectedItem;
    protected boolean visible;
    private boolean enabled;
    private int buttonHeight;

    public NVLGuiListHelper(final int idBase, final int newLeft, final int newTop, final int newWidth, final int newHeight, final int newButtonHeight, final String newPrefix) {
        this.listStartX = 0;
        this.listStartY = 0;
        this.upButton = null;
        this.downButton = null;
        this.prefix = "";
        this.top = 0;
        this.left = 0;
        this.width = 0;
        this.height = 0;
        this.userList = null;
        this.barPos = 0;
        this.startPos = 0;
        this.baseID = 0;
        this.selectedItem = "";
        this.visible = true;
        this.enabled = true;
        this.buttonHeight = 20;
        this.width = newWidth;
        this.height = newHeight;
        this.prefix = newPrefix;
        this.left = newLeft;
        this.top = newTop;
        this.baseID = idBase;
        this.buttonHeight = newButtonHeight;
        (this.upButton = new NVLGuiButton(idBase, 0, 0, 14, this.buttonHeight, "^", newPrefix + "U")).setTexture("nvl_widgets.png");
        (this.downButton = new NVLGuiButton(idBase + 1, 0, 0, 14, this.buttonHeight, "v", newPrefix + "D")).setTexture("nvl_widgets.png");
        this.userList = new ArrayList<String>();
    }

    public void setScreenDimensionsForButtons(final int screenWidth, final int heightOffset) {
        final int guiLeft = screenWidth / 2 - 128;
        this.upButton.field_146128_h = guiLeft + this.left + this.width - 14;
        this.upButton.field_146129_i = heightOffset + this.top;
        this.downButton.field_146128_h = guiLeft + this.left + this.width - 14;
        this.downButton.field_146129_i = heightOffset + this.top + this.height * 11 - this.buttonHeight;
    }

    public int getBarTop() {
        return this.top + this.barPos * 11;
    }

    public int getBarLeft() {
        return this.left;
    }

    public int getBarRight() {
        return this.left + this.width - 14;
    }

    public int getBarBottom() {
        return this.top + (this.barPos + 1) * 11;
    }

    public int getMainTop() {
        return this.top;
    }

    public int getMainLeft() {
        return this.left;
    }

    public int getMainRight() {
        return this.left + this.width - 14;
    }

    public int getMainBottom() {
        return this.top + this.height * 11;
    }

    public int getButtonHeight() {
        return this.buttonHeight;
    }

    public void drawItems(final FontRenderer fr, final int screenWidth, final int heightOffset) {
        final int guiLeft = screenWidth / 2 - 128;
        if (this.userList != null && this.visible && this.userList != null && this.userList.size() > 0) {
            for (int i = 0; i < this.height; ++i) {
                if (this.startPos + i < this.userList.size()) {
                    fr.func_78276_b((String)this.userList.get(this.startPos + i), guiLeft + this.left + 2, heightOffset + this.top + i * 11 + 2, 7864319);
                }
            }
        }
    }

    public boolean handleClick(final int x, final int y, final int screenWidth, final int heightOffset) {
        final int guiLeft = screenWidth / 2 - 128;
        boolean r = false;
        if (this.visible && this.enabled) {
            if (x > guiLeft + this.left && x < guiLeft + this.left + this.width - 14 && y > heightOffset + this.top && y < heightOffset + this.top + this.height * 11) {
                final int tgt = (y - this.top - heightOffset) / 11;
                if (this.userList != null && tgt < this.userList.size()) {
                    this.barPos = tgt;
                }
                r = true;
            }
            this.updateSelectedItem();
            this.setButtonStates();
        }
        return r;
    }

    public void handleButtons(final int id) {
        if (this.visible && this.enabled) {
            if (id == this.baseID) {
                if (this.barPos > 0) {
                    --this.barPos;
                }
                else if (this.startPos > 0) {
                    --this.startPos;
                }
            }
            if (id == this.baseID + 1 && this.userList != null && this.startPos + this.barPos < this.userList.size()) {
                if (this.barPos < this.height - 1) {
                    ++this.barPos;
                }
                else if (this.startPos + this.barPos < this.userList.size()) {
                    ++this.startPos;
                }
            }
            this.updateSelectedItem();
            this.setButtonStates();
        }
    }

    private void updateSelectedItem() {
        this.selectedItem = "";
        if (this.barPos + this.startPos >= this.userList.size()) {
            this.startPos = 0;
            this.barPos = 0;
        }
        if (this.userList.size() > 0) {
            this.selectedItem = this.userList.get(this.barPos + this.startPos);
        }
    }

    public void importArray(final String[] arr) {
        if (arr != null) {
            this.userList.clear();
            for (int i = 0; i < arr.length; ++i) {
                this.userList.add(arr[i]);
            }
            Collections.sort(this.userList);
        }
        this.setButtonStates();
        this.updateSelectedItem();
    }

    public void importArrayList(final ArrayList<String> arr) {
        if (arr != null) {
            this.userList.clear();
            this.userList.addAll(arr);
            Collections.sort(this.userList);
        }
        this.setButtonStates();
        this.updateSelectedItem();
    }

    public void addItem(final String item) {
        this.userList.add(item);
        Collections.sort(this.userList);
        this.setButtonStates();
        this.updateSelectedItem();
    }

    public void resetBar() {
        this.startPos = 0;
        this.barPos = 0;
        this.updateSelectedItem();
    }

    private void setButtonStates() {
        if (this.enabled) {
            if (this.userList.size() <= this.height) {
                this.upButton.field_146124_l = false;
                this.downButton.field_146124_l = false;
                this.startPos = 0;
            }
            else {
                this.upButton.field_146124_l = (this.startPos > 0 || this.barPos > 0);
                this.downButton.field_146124_l = (this.startPos + this.barPos < this.userList.size() - 1);
            }
        }
        else {
            this.upButton.field_146124_l = false;
            this.downButton.field_146124_l = false;
        }
    }

    public String getSelectedItem() {
        return this.selectedItem;
    }

    public void setVisibility(final boolean state) {
        this.upButton.field_146125_m = state;
        this.downButton.field_146125_m = state;
        this.visible = state;
    }

    public void setEnabled(final boolean state) {
        this.enabled = state;
        this.setButtonStates();
    }
}