package org.saturnclient.ui.screens;

import java.util.List;

import org.saturnclient.common.provider.Providers;
import org.saturnclient.common.ref.game.MinecraftClientRef.MinecraftScreen;
import org.saturnclient.config.AnimationConfig;
import org.saturnclient.config.Config;
import org.saturnclient.config.property.FloatProperty;
import org.saturnclient.config.Theme;
import org.saturnclient.ui.Element;
import org.saturnclient.ui.SaturnScreen;
import org.saturnclient.ui.anim.Fade;
import org.saturnclient.ui.anim.SlideFade;
import org.saturnclient.ui.anim.SlideY;
import org.saturnclient.ui.components.AccountChip;
import org.saturnclient.ui.components.Dock;
import org.saturnclient.ui.elements.AnimationStagger;
import org.saturnclient.ui.elements.Button;
import org.saturnclient.ui.elements.ImageTexture;
import org.saturnclient.ui.elements.Label;
import org.saturnclient.ui.resources.Fonts;
import org.saturnclient.ui.resources.Textures;

/**
 * Saturn's title screen: the logo over the game's menus in the middle, and
 * along the bottom the player, a dock of Saturn's screens and the version.
 */
public class TitleMenu extends SaturnScreen {
    // The logo and wordmark as the shift menu has them: the wordmark over the logo's foot
    private static final int LOGO = 98;
    private static final int WORDMARK_WIDTH = 98;
    private static final int WORDMARK_HEIGHT = 10;
    private static final int WORDMARK_Y = 88;
    /** From the logo's foot to the menus, close so they read as one block */
    private static final int MENUS_GAP = 14;
    private static final int COLUMN_WIDTH = 280;
    private static final int BUTTON_HEIGHT = 36;
    private static final int GAP = 8;
    private static final int EDGE = 28;
    private static final float VERSION_SCALE = 0.62f;

    public TitleMenu() {
        super("Title Menu");
    }

    @Override
    protected FloatProperty getScaleSetting() {
        return Config.titleScale;
    }

    @Override
    public void ui() {
        blurBackground = false;

        // Logo and menus, centered together a little above the middle
        int menusHeight = BUTTON_HEIGHT * 3 + GAP * 2;
        int blockHeight = LOGO + MENUS_GAP + menusHeight;
        int top = (height - blockHeight) / 2 - 20;

        draw(new ImageTexture(Config.getLogo())
                .dimensions(LOGO, LOGO)
                .position((width - LOGO) / 2, top)
                .animation(new SlideY(AnimationConfig.logo, -20)));
        draw(new ImageTexture(Textures.LOGO_TEXT)
                .dimensions(WORDMARK_WIDTH, WORDMARK_HEIGHT)
                .position((width - WORDMARK_WIDTH) / 2, top + WORDMARK_Y)
                .animation(new Fade(AnimationConfig.logo.duration.value)));

        int rowHeight = BUTTON_HEIGHT + GAP;
        int halfWidth = (COLUMN_WIDTH - GAP) / 2;
        AnimationStagger menus = new AnimationStagger(AnimationConfig.mainMenu);

        addMenuButton(menus, new Button("Singleplayer",
                () -> Providers.saturn.getClient().setScreen(MinecraftScreen.SelectWorld))
                .dimensions(COLUMN_WIDTH, BUTTON_HEIGHT).position(0, 0));
        addMenuButton(menus, new Button("Multiplayer",
                () -> Providers.saturn.getClient().setScreen(MinecraftScreen.Multiplayer))
                .dimensions(COLUMN_WIDTH, BUTTON_HEIGHT).position(0, rowHeight));
        addMenuButton(menus, new Button("Options",
                () -> Providers.saturn.getClient().setScreen(MinecraftScreen.Options))
                .dimensions(halfWidth, BUTTON_HEIGHT).position(0, rowHeight * 2));
        addMenuButton(menus, new Button("Quit",
                () -> Providers.saturn.getClient().scheduleStop())
                .dimensions(halfWidth, BUTTON_HEIGHT).position(COLUMN_WIDTH - halfWidth, rowHeight * 2));

        draw(menus.position((width - COLUMN_WIDTH) / 2, top + LOGO + MENUS_GAP));

        // Along the bottom: the player, Saturn's screens, the version
        draw(new AccountChip()
                .position(EDGE, height - EDGE - AccountChip.HEIGHT)
                .animation(new Fade(AnimationConfig.mainMenu)));

        Dock dock = new Dock(List.of(
                new Dock.Item(Textures.ICON_MODS, () -> Providers.saturn.getClient().setScreen(new ModMenu())),
                new Dock.Item(Textures.ICON_COSMETICS,
                        () -> Providers.saturn.getClient().setScreen(new CosmeticsMenu())),
                new Dock.Item(Textures.ICON_HUD_EDITOR,
                        () -> Providers.saturn.getClient().setScreen(new HudEditor())),
                new Dock.Item(Textures.ICON_SETTINGS,
                        () -> Providers.saturn.getClient().setScreen(new ClientSettings()))));
        draw(dock.position((width - dock.width) / 2, height - EDGE - Dock.HEIGHT)
                .animation(new SlideFade(AnimationConfig.mainMenu, 12)));

        String version = getVersionText();
        int versionWidth = (int) (Fonts.getWidth(version, Theme.getBodyFont()) * VERSION_SCALE);
        int versionHeight = (int) (Fonts.getHeight() * VERSION_SCALE);
        draw(new Label(() -> version, VERSION_SCALE, Theme::getBodyFont, Theme::getMutedFg)
                .position(width - EDGE - versionWidth, height - EDGE - (AccountChip.HEIGHT + versionHeight) / 2)
                .animation(new Fade(AnimationConfig.mainMenu)));
    }

    /**
     * "Saturn Client 0.1.0 · Minecraft 1.21.11", from the mod version
     * "0.1.0+1.21.11".
     */
    private static String getVersionText() {
        String[] version = Providers.saturn.getModVersion().split("\\+", 2);
        String text = "Saturn Client " + version[0];
        return version.length > 1 ? text + " · Minecraft " + version[1] : text;
    }

    private static void addMenuButton(AnimationStagger stagger, Element button) {
        stagger.draw(button.animation(new SlideFade(AnimationConfig.mainMenu, -10)));
    }
}