package games.coob.animations.menu;

import lombok.AccessLevel;
import lombok.RequiredArgsConstructor;
import org.bukkit.inventory.ItemStack;
import org.mineacademy.fo.menu.model.ItemCreator;
import org.mineacademy.fo.remain.CompMaterial;
import org.mineacademy.fo.slider.Slider;

import java.util.HashMap;
import java.util.Map;

@RequiredArgsConstructor(access = AccessLevel.PRIVATE)
public class ItemFrameClockwiseSlider implements Slider<Map<Integer, ItemStack>> {

    /**
     * The filler items
     */
    private final ItemStack fillerItem;

    /**
     * The selected item
     */
    private final ItemStack highlightItem;

    /**
     * The size of the frame for the animation (allowed values - 18, 27, 36, 45, 54), make sure the menu's size is big enough
     */
    private int frameSize = 27;

    /*
     * The current head in the slider.
     */
    private int currentPointer = 0;

    /**
     * Set the frame's size
     *
     * @param frameSize
     * @return
     */
    public ItemFrameClockwiseSlider frameSize(final int frameSize) {
        this.frameSize = frameSize;

        return this;
    }

    /**
     * @see org.mineacademy.fo.slider.Slider#next()
     */
    @Override
    public Map<Integer, ItemStack> next() {

        final Map<Integer, ItemStack> items = new HashMap<>();
        final int rowCount = this.frameSize / 9;

        for (int index = 0; index < this.frameSize; index++) {
            final int row = index / 9;
            final int column = (index % 9) + 1;

            if (row == 0 || row == rowCount - 1 || column == 1 || column == 9)
                items.put(index, this.fillerItem);
        }

        if (this.currentPointer < 8)
            this.currentPointer++;
        else if (this.currentPointer == 8)
            this.currentPointer = 17;

        else if (this.currentPointer <= this.frameSize - 1 && this.currentPointer > this.frameSize - 9)
            this.currentPointer--;

        else if (this.currentPointer == 9)
            this.currentPointer = 0;

        else if (rowCount >= 3) {
            if (this.currentPointer == 17)
                this.currentPointer = 26;
            else if (this.currentPointer == 18)
                this.currentPointer = 9;
            else if (rowCount >= 4) {
                if (this.currentPointer == 26)
                    this.currentPointer = 35;
                else if (this.currentPointer == 27)
                    this.currentPointer = 18;
                else if (rowCount >= 5) {
                    if (this.currentPointer == 35)
                        this.currentPointer = 44;
                    else if (this.currentPointer == 36)
                        this.currentPointer = 27;
                    else if (rowCount == 6) {
                        if (this.currentPointer == 44)
                            this.currentPointer = 53;
                        else if (this.currentPointer == 45)
                            this.currentPointer = 36;
                    }
                }
            }
        }

        items.replace(this.currentPointer, this.highlightItem);

        return items;
    }

    /**
     * Create a new slider for the given items.
     *
     * @param filler
     * @param highlighted
     * @return
     */
    public static ItemFrameClockwiseSlider from(final CompMaterial filler, final CompMaterial highlighted) {
        return from(ItemCreator.of(filler), ItemCreator.of(highlighted));
    }

    /**
     * Create a new slider for the given items.
     *
     * @param filler
     * @param highlighted
     * @return
     */
    public static ItemFrameClockwiseSlider from(final ItemCreator.ItemCreatorBuilder filler,
                                                final ItemCreator.ItemCreatorBuilder highlighted) {
        return from(filler.build().make(), highlighted.build().make());
    }

    /**
     * Create a new slider for the given items.
     *
     * @param filler
     * @param highlighted
     * @return
     */
    public static ItemFrameClockwiseSlider from(final ItemStack filler, final ItemStack highlighted) {
        return new ItemFrameClockwiseSlider(filler, highlighted);
    }
}