ActuallyAdditions/src/main/java/de/ellpeck/actuallyadditions/common/misc/special/SpecialRenderInit.java

package de.ellpeck.actuallyadditions.common.misc.special;

import java.util.HashMap;
import java.util.Locale;
import java.util.Properties;

import de.ellpeck.actuallyadditions.common.util.StackUtil;
import net.minecraft.block.Block;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.client.event.RenderPlayerEvent;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.fml.common.eventhandler.EventPriority;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;

public class SpecialRenderInit {

    public static final HashMap<String, RenderSpecial> SPECIAL_LIST = new HashMap<>();

    public SpecialRenderInit() {
        new ThreadSpecialFetcher();
        MinecraftForge.EVENT_BUS.register(this);
    }

    public static void parse(Properties properties) {
        for (String key : properties.stringPropertyNames()) {
            String[] values = properties.getProperty(key).split("@");
            if (values.length > 0) {
                String itemName = values[0];

                int meta;
                try {
                    meta = Integer.parseInt(values[1]);
                } catch (Exception e) {
                    meta = 0;
                }

                ResourceLocation resLoc = new ResourceLocation(itemName);
                ItemStack stack = findItem(resLoc, meta);

                //TODO Remove this block once the transition to 1.11 is done and the special people stuff file has been converted to snake_case
                if (!StackUtil.isValid(stack)) {
                    String convertedItemName = "";
                    for (char c : itemName.toCharArray()) {
                        if (Character.isUpperCase(c)) {
                            convertedItemName += "_";
                            convertedItemName += Character.toLowerCase(c);
                        } else {
                            convertedItemName += c;
                        }
                    }
                    stack = findItem(new ResourceLocation(convertedItemName), meta);
                }

                if (StackUtil.isValid(stack)) {
                    SPECIAL_LIST.put(key.toLowerCase(Locale.ROOT), new RenderSpecial(stack));
                }
            }
        }
    }

    private static ItemStack findItem(ResourceLocation resLoc, int meta) {
        if (Item.REGISTRY.containsKey(resLoc)) {
            Item item = Item.REGISTRY.getObject(resLoc);
            if (item != null) { return new ItemStack(item, 1, meta); }
        } else if (Block.REGISTRY.containsKey(resLoc)) {
            Block block = Block.REGISTRY.getObject(resLoc);
            if (block != null) { return new ItemStack(block, 1, meta); }
        }
        return StackUtil.getEmpty();
    }

    @SubscribeEvent(priority = EventPriority.HIGHEST)
    public void onPlayerRender(RenderPlayerEvent.Pre event) {
        if (event.getEntityPlayer() != null) {
            String name = event.getEntityPlayer().getName();
            if (name != null) {
                String lower = name.toLowerCase(Locale.ROOT);
                if (SPECIAL_LIST.containsKey(lower)) {
                    RenderSpecial render = SPECIAL_LIST.get(lower);
                    if (render != null) {
                        render.render(event.getEntityPlayer(), event.getPartialRenderTick());
                    }
                }
            }
        }
    }

}