package de.ellpeck.actuallyadditions.common.booklet.gui;

import java.io.IOException;
import java.util.Arrays;
import java.util.List;

import org.apache.commons.lang3.ArrayUtils;
import org.lwjgl.input.Keyboard;
import org.lwjgl.input.Mouse;

import de.ellpeck.actuallyadditions.api.ActuallyAdditionsAPI;
import de.ellpeck.actuallyadditions.api.booklet.internal.GuiBookletBase;
import de.ellpeck.actuallyadditions.common.ActuallyAdditions;
import de.ellpeck.actuallyadditions.common.booklet.button.BookmarkButton;
import de.ellpeck.actuallyadditions.common.booklet.button.TrialsButton;
import de.ellpeck.actuallyadditions.common.config.values.ConfigIntValues;
import de.ellpeck.actuallyadditions.common.data.PlayerData;
import de.ellpeck.actuallyadditions.common.data.PlayerData.PlayerSave;
import de.ellpeck.actuallyadditions.common.inventory.gui.TexturedButton;
import de.ellpeck.actuallyadditions.common.network.PacketHandlerHelper;
import de.ellpeck.actuallyadditions.common.util.AssetUtil;
import de.ellpeck.actuallyadditions.common.util.StringUtil;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.client.gui.GuiScreen;
import net.minecraft.client.gui.GuiTextField;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.text.TextFormatting;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public abstract class GuiBooklet extends GuiBookletBase {

    public static final int BUTTONS_PER_PAGE = 12;
    public static final ResourceLocation RES_LOC_GUI = AssetUtil.getBookletGuiLocation("gui_booklet");
    public static final ResourceLocation RES_LOC_GADGETS = AssetUtil.getBookletGuiLocation("gui_booklet_gadgets");
    protected final BookmarkButton[] bookmarkButtons = new BookmarkButton[12];
    public GuiScreen previousScreen;
    public GuiBookletBase parentPage;
    public GuiTextField searchField;
    protected int xSize;
    protected int ySize;
    protected int guiLeft;
    protected int guiTop;
    private GuiButton buttonLeft;
    private GuiButton buttonRight;
    private GuiButton buttonBack;

    private GuiButton buttonTrials;

    private float smallFontSize;
    private float mediumFontSize;
    private float largeFontSize;

    public GuiBooklet(GuiScreen previousScreen, GuiBookletBase parentPage) {
        this.previousScreen = previousScreen;
        this.parentPage = parentPage;

        this.xSize = 281;
        this.ySize = 180;
    }

    private static float getFontSize(String lang, ConfigIntValues config, float defaultValue) {
        int conf = config.getValue();
        if (conf <= 0) {
            try {
                return Float.parseFloat(StringUtil.localize("booklet." + ActuallyAdditions.MODID + ".fontSize." + lang));
            } catch (Exception e) {
                return defaultValue;
            }
        } else {
            return conf / 100F;
        }
    }

    @Override
    public void initGui() {
        super.initGui();

        this.guiLeft = (this.width - this.xSize) / 2;
        this.guiTop = (this.height - this.ySize) / 2;

        this.smallFontSize = getFontSize("small", ConfigIntValues.FONT_SIZE_SMALL, 0.5F);
        this.mediumFontSize = getFontSize("medium", ConfigIntValues.FONT_SIZE_MEDIUM, 0.75F);
        this.largeFontSize = getFontSize("large", ConfigIntValues.FONT_SIZE_LARGE, 0.8F);

        if (this.hasPageLeftButton()) {
            List<String> hoverText = Arrays.asList(TextFormatting.GOLD + "Previous Page", TextFormatting.ITALIC + "Or scroll up");
            this.buttonLeft = new TexturedButton(RES_LOC_GADGETS, -2000, this.guiLeft - 12, this.guiTop + this.ySize - 8, 18, 54, 18, 10, hoverText);
            this.buttonList.add(this.buttonLeft);
        }

        if (this.hasPageRightButton()) {
            List<String> hoverText = Arrays.asList(TextFormatting.GOLD + "Next Page", TextFormatting.ITALIC + "Or scroll down");
            this.buttonRight = new TexturedButton(RES_LOC_GADGETS, -2001, this.guiLeft + this.xSize - 6, this.guiTop + this.ySize - 8, 0, 54, 18, 10, hoverText);
            this.buttonList.add(this.buttonRight);
        }

        if (this.hasBackButton()) {
            List<String> hoverText = Arrays.asList(TextFormatting.GOLD + "Go Back", TextFormatting.ITALIC + "Or right-click", TextFormatting.ITALIC.toString() + TextFormatting.GRAY + "Hold Shift for Main Page");
            this.buttonBack = new TexturedButton(RES_LOC_GADGETS, -2002, this.guiLeft - 15, this.guiTop - 3, 36, 54, 18, 10, hoverText);
            this.buttonList.add(this.buttonBack);
        }

        if (this.hasSearchBar()) {
            this.searchField = new GuiTextField(-420, this.fontRenderer, this.guiLeft + this.xSize + 2, this.guiTop + this.ySize - 40 + 2, 64, 12);
            this.searchField.setMaxStringLength(50);
            this.searchField.setEnableBackgroundDrawing(false);
        }

        if (this.hasBookmarkButtons()) {
            PlayerSave data = PlayerData.getDataFromPlayer(this.mc.player);

            int xStart = this.guiLeft + this.xSize / 2 - 16 * this.bookmarkButtons.length / 2;
            for (int i = 0; i < this.bookmarkButtons.length; i++) {
                this.bookmarkButtons[i] = new BookmarkButton(1337 + i, xStart + i * 16, this.guiTop + this.ySize, this);
                this.buttonList.add(this.bookmarkButtons[i]);

                if (data.bookmarks[i] != null) {
                    this.bookmarkButtons[i].assignedPage = data.bookmarks[i];
                }
            }
        }

        this.buttonTrials = new TrialsButton(this);
        this.buttonList.add(this.buttonTrials);
    }

    @Override
    public void onGuiClosed() {
        super.onGuiClosed();

        //Don't cache the parent GUI, otherwise it opens again when you close the cached book!
        this.previousScreen = null;

        if (this.mc.player == null) return;
        PlayerSave data = PlayerData.getDataFromPlayer(this.mc.player);
        data.lastOpenBooklet = this;

        boolean change = false;
        for (int i = 0; i < this.bookmarkButtons.length; i++) {
            if (data.bookmarks[i] != this.bookmarkButtons[i].assignedPage) {
                data.bookmarks[i] = this.bookmarkButtons[i].assignedPage;
                change = true;
            }
        }

        if (change) {
            PacketHandlerHelper.sendPlayerDataToServer(true, 0);
        }
    }

    @Override
    public void drawScreen(int mouseX, int mouseY, float partialTicks) {
        this.drawScreenPre(mouseX, mouseY, partialTicks);
        super.drawScreen(mouseX, mouseY, partialTicks);
        this.drawScreenPost(mouseX, mouseY, partialTicks);
    }

    public void drawScreenPre(int mouseX, int mouseY, float partialTicks) {
        GlStateManager.color(1F, 1F, 1F);
        this.mc.getTextureManager().bindTexture(RES_LOC_GUI);
        drawModalRectWithCustomSizedTexture(this.guiLeft, this.guiTop, 0, 0, this.xSize, this.ySize, 512, 512);

        if (this.hasSearchBar()) {
            this.mc.getTextureManager().bindTexture(RES_LOC_GADGETS);
            this.drawTexturedModalRect(this.guiLeft + this.xSize, this.guiTop + this.ySize - 40, 188, 0, 68, 14);

            boolean unicodeBefore = this.fontRenderer.getUnicodeFlag();
            this.fontRenderer.setUnicodeFlag(true);

            if (!this.searchField.isFocused() && (this.searchField.getText() == null || this.searchField.getText().isEmpty())) {
                this.fontRenderer.drawString(TextFormatting.ITALIC + StringUtil.localize("info." + ActuallyAdditions.MODID + ".booklet.searchField"), this.guiLeft + this.xSize + 2, this.guiTop + this.ySize - 40 + 2, 0xFFFFFF, false);
            }

            this.searchField.drawTextBox();

            this.fontRenderer.setUnicodeFlag(unicodeBefore);
        }
    }

    public void drawScreenPost(int mouseX, int mouseY, float partialTicks) {
        for (GuiButton button : this.buttonList) {
            if (button instanceof BookmarkButton) {
                ((BookmarkButton) button).drawHover(mouseX, mouseY);
            } else if (button instanceof TexturedButton) {
                ((TexturedButton) button).drawHover(mouseX, mouseY);
            }
        }
    }

    @Override
    protected void mouseClicked(int mouseX, int mouseY, int mouseButton) throws IOException {
        super.mouseClicked(mouseX, mouseY, mouseButton);

        if (this.hasSearchBar()) {
            this.searchField.mouseClicked(mouseX, mouseY, mouseButton);
        }

        if (mouseButton == 1 && this.hasBackButton()) {
            this.onBackButtonPressed();
        }
    }

    @Override
    public void handleMouseInput() throws IOException {
        int wheel = Mouse.getEventDWheel();
        if (wheel != 0) {
            if (wheel < 0) {
                if (this.hasPageRightButton()) {
                    this.onPageRightButtonPressed();
                }
            } else if (wheel > 0) {
                if (this.hasPageLeftButton()) {
                    this.onPageLeftButtonPressed();
                }
            }
        }
        super.handleMouseInput();
    }

    @Override
    public void updateScreen() {
        super.updateScreen();

        if (this.hasSearchBar()) {
            this.searchField.updateCursorCounter();
        }
    }

    @Override
    public boolean doesGuiPauseGame() {
        return false;
    }

    public boolean hasPageLeftButton() {
        return false;
    }

    public void onPageLeftButtonPressed() {

    }

    public boolean hasPageRightButton() {
        return false;
    }

    public void onPageRightButtonPressed() {

    }

    public boolean areTrialsOpened() {
        return false;
    }

    public boolean hasBackButton() {
        return false;
    }

    public void onBackButtonPressed() {
        this.mc.displayGuiScreen(new GuiMainPage(this.previousScreen));
    }

    public boolean hasSearchBar() {
        return true;
    }

    public boolean hasBookmarkButtons() {
        return true;
    }

    @Override
    public float getSmallFontSize() {
        return this.smallFontSize;
    }

    @Override
    public float getMediumFontSize() {
        return this.mediumFontSize;
    }

    @Override
    public float getLargeFontSize() {
        return this.largeFontSize;
    }

    public void onSearchBarChanged(String searchBarText) {
        GuiBookletBase parent = !(this instanceof GuiEntry) ? this : this.parentPage;
        this.mc.displayGuiScreen(new GuiEntry(this.previousScreen, parent, ActuallyAdditionsAPI.entryAllAndSearch, 0, searchBarText, true));
    }

    @Override
    protected void actionPerformed(GuiButton button) throws IOException {
        if (this.hasPageLeftButton() && button == this.buttonLeft) {
            this.onPageLeftButtonPressed();
        } else if (this.hasPageRightButton() && button == this.buttonRight) {
            this.onPageRightButtonPressed();
        } else if (this.hasBackButton() && button == this.buttonBack) {
            this.onBackButtonPressed();
        }
        if (button == this.buttonTrials) {
            this.mc.displayGuiScreen(new GuiEntry(this.previousScreen, this, ActuallyAdditionsAPI.entryTrials, 0, "", false));
        } else if (this.hasBookmarkButtons() && button instanceof BookmarkButton) {
            int index = ArrayUtils.indexOf(this.bookmarkButtons, button);
            if (index >= 0) {
                this.bookmarkButtons[index].onPressed();
            }
        } else {
            super.actionPerformed(button);
        }
    }

    @Override
    protected void keyTyped(char typedChar, int key) throws IOException {
        if (key == Keyboard.KEY_ESCAPE || key == this.mc.gameSettings.keyBindInventory.getKeyCode() && (!this.hasSearchBar() || !this.searchField.isFocused())) {
            this.mc.displayGuiScreen(this.previousScreen);
        } else if (this.hasSearchBar() & this.searchField.isFocused()) {
            String lastText = this.searchField.getText();

            this.searchField.textboxKeyTyped(typedChar, key);

            if (!lastText.equals(this.searchField.getText())) {
                this.onSearchBarChanged(this.searchField.getText());
            }
        } else {
            super.keyTyped(typedChar, key);
        }
    }

    @Override
    public void renderScaledAsciiString(String text, int x, int y, int color, boolean shadow, float scale) {
        StringUtil.renderScaledAsciiString(this.fontRenderer, text, x, y, color, shadow, scale);
    }

    @Override
    public void renderSplitScaledAsciiString(String text, int x, int y, int color, boolean shadow, float scale, int length) {
        StringUtil.renderSplitScaledAsciiString(this.fontRenderer, text, x, y, color, shadow, scale, length);
    }

    @Override
    public List<GuiButton> getButtonList() {
        return this.buttonList;
    }

    @Override
    public int getGuiLeft() {
        return this.guiLeft;
    }

    @Override
    public int getGuiTop() {
        return this.guiTop;
    }

    @Override
    public int getSizeX() {
        return this.xSize;
    }

    @Override
    public int getSizeY() {
        return this.ySize;
    }
}