package com.atsuishio.superbwarfare.client.overlay;

import com.atsuishio.superbwarfare.ModUtils;
import com.atsuishio.superbwarfare.entity.vehicle.IArmedVehicleEntity;
import com.atsuishio.superbwarfare.entity.vehicle.ICannonEntity;
import com.atsuishio.superbwarfare.event.ClientEventHandler;
import com.atsuishio.superbwarfare.init.ModItems;
import com.atsuishio.superbwarfare.network.ModVariables;
import com.mojang.blaze3d.platform.GlStateManager;
import com.mojang.blaze3d.systems.RenderSystem;
import net.minecraft.client.CameraType;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.renderer.GameRenderer;
import net.minecraft.world.entity.player.Player;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.client.event.RenderGuiEvent;
import net.minecraftforge.eventbus.api.EventPriority;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.common.Mod;

@Mod.EventBusSubscriber(value = Dist.CLIENT)
public class GrenadeLauncherOverlay {

    @SubscribeEvent(priority = EventPriority.NORMAL)
    public static void eventHandler(RenderGuiEvent.Pre event) {
        int w = event.getWindow().getGuiScaledWidth();
        int h = event.getWindow().getGuiScaledHeight();
        Player player = Minecraft.getInstance().player;

        if (player != null && player.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null).orElse(new ModVariables.PlayerVariables()).edit)
            return;
        if (player.getVehicle() instanceof IArmedVehicleEntity iArmedVehicle && iArmedVehicle.banHand(player))
            return;
        if (!shouldRenderCrossHair(player)) return;

        GuiGraphics guiGraphics = event.getGuiGraphics();

        guiGraphics.pose().pushPose();

        RenderSystem.disableDepthTest();
        RenderSystem.depthMask(false);
        RenderSystem.enableBlend();
        RenderSystem.setShader(GameRenderer::getPositionTexShader);
        RenderSystem.blendFuncSeparate(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA, GlStateManager.SourceFactor.ONE, GlStateManager.DestFactor.ZERO);
        RenderSystem.setShaderColor(1, 1, 1, 1);

        guiGraphics.blit(ModUtils.loc("textures/screens/rex.png"), w / 2 - 16, h / 2 - 16, 0, 0, 32, 32, 32, 32);

        RenderSystem.depthMask(true);
        RenderSystem.defaultBlendFunc();
        RenderSystem.enableDepthTest();
        RenderSystem.disableBlend();
        RenderSystem.setShaderColor(1, 1, 1, 1);

        guiGraphics.pose().popPose();
    }

    private static boolean shouldRenderCrossHair(Player player) {
        if (player == null) return false;
        return !player.isSpectator()
                && (player.getMainHandItem().getItem() == ModItems.M_79.get() || player.getMainHandItem().getItem() == ModItems.SECONDARY_CATACLYSM.get())
                && (Minecraft.getInstance().options.getCameraType() == CameraType.FIRST_PERSON || (player.isPassenger() && player.getVehicle() instanceof ICannonEntity))
                && !ClientEventHandler.zoom;
    }
}