package mekanism.common;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.common.gameevent.TickEvent.Phase;
import cpw.mods.fml.common.gameevent.TickEvent.PlayerTickEvent;
import cpw.mods.fml.relauncher.Side;
import mekanism.api.gas.GasStack;
import mekanism.common.entity.EntityFlame;
import mekanism.common.item.ItemFlamethrower;
import mekanism.common.item.ItemFreeRunners;
import mekanism.common.item.ItemGasMask;
import mekanism.common.item.ItemJetpack;
import mekanism.common.item.ItemJetpack.JetpackMode;
import mekanism.common.item.ItemScubaTank;
import mekanism.common.util.MekanismUtils;
import net.minecraft.block.Block;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.item.ItemStack;
import net.minecraft.network.NetHandlerPlayServer;
import net.minecraft.potion.PotionEffect;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.MathHelper;

public class CommonPlayerTickHandler {
    @SubscribeEvent
    public void onTick(PlayerTickEvent event) {
        if (event.phase == Phase.END && event.side == Side.SERVER) {
            tickEnd(event.player);
        }
    }

    public void tickEnd(EntityPlayer player) {
        if (player.getEquipmentInSlot(1) != null
            && player.getEquipmentInSlot(1).getItem() instanceof ItemFreeRunners) {
            player.stepHeight = 1.002F;
        } else {
            if (player.stepHeight == 1.002F) {
                player.stepHeight = 0.5F;
            }
        }

        if (isFlamethrowerOn(player)) {
            player.worldObj.spawnEntityInWorld(new EntityFlame(player));

            if (!player.capabilities.isCreativeMode) {
                ((ItemFlamethrower) player.getCurrentEquippedItem().getItem())
                    .useGas(player.getCurrentEquippedItem());
            }
        }

        if (isJetpackOn(player)) {
            ItemJetpack jetpack = (ItemJetpack) player.getEquipmentInSlot(3).getItem();

            if (jetpack.getMode(player.getEquipmentInSlot(3)) == JetpackMode.NORMAL) {
                player.motionY = Math.min(player.motionY + 0.15D, 0.5D);
            } else if (jetpack.getMode(player.getEquipmentInSlot(3)) == JetpackMode.HOVER) {
                if ((!Mekanism.keyMap.has(player, KeySync.ASCEND)
                     && !Mekanism.keyMap.has(player, KeySync.DESCEND))
                    || (Mekanism.keyMap.has(player, KeySync.ASCEND)
                        && Mekanism.keyMap.has(player, KeySync.DESCEND))) {
                    if (player.motionY > 0) {
                        player.motionY = Math.max(player.motionY - 0.15D, 0);
                    } else if (player.motionY < 0) {
                        if (!isOnGround(player)) {
                            player.motionY = Math.min(player.motionY + 0.15D, 0);
                        }
                    }
                } else {
                    if (Mekanism.keyMap.has(player, KeySync.ASCEND)) {
                        player.motionY = Math.min(player.motionY + 0.15D, 0.2D);
                    } else if (Mekanism.keyMap.has(player, KeySync.DESCEND)) {
                        if (!isOnGround(player)) {
                            player.motionY = Math.max(player.motionY - 0.15D, -0.2D);
                        }
                    }
                }
            }

            player.fallDistance = 0.0F;

            if (player instanceof EntityPlayerMP) {
                MekanismUtils.setPrivateValue(
                    ((EntityPlayerMP) player).playerNetServerHandler,
                    0,
                    NetHandlerPlayServer.class,
                    ObfuscatedNames.NetHandlerPlayServer_floatingTickCount
                );
            }

            jetpack.useGas(player.getEquipmentInSlot(3));
        }

        if (isGasMaskOn(player)) {
            ItemScubaTank tank = (ItemScubaTank) player.getEquipmentInSlot(3).getItem();

            final int max = 300;

            tank.useGas(player.getEquipmentInSlot(3));
            GasStack received
                = tank.useGas(player.getEquipmentInSlot(3), max - player.getAir());

            if (received != null) {
                player.setAir(player.getAir() + received.amount);
            }

            if (player.getAir() == max) {
                for (Object obj : player.getActivePotionEffects()) {
                    if (obj instanceof PotionEffect) {
                        for (int i = 0; i < 9; i++) {
                            ((PotionEffect) obj).onUpdate(player);
                        }
                    }
                }
            }
        }
    }

    public static boolean isOnGround(EntityPlayer player) {
        int x = MathHelper.floor_double(player.posX);
        int y = (int) Math.round(player.posY - player.yOffset - 1);
        int z = MathHelper.floor_double(player.posZ);

        Block b = player.worldObj.getBlock(x, y, z);
        AxisAlignedBB box = b.getCollisionBoundingBoxFromPool(player.worldObj, x, y, z);
        AxisAlignedBB playerBox = player.boundingBox.copy().offset(0, -0.01, 0);

        return box != null && playerBox.intersectsWith(box);
    }

    public boolean isJetpackOn(EntityPlayer player) {
        ItemStack stack = player.inventory.armorInventory[2];

        if (stack != null && !player.capabilities.isCreativeMode) {
            if (stack.getItem() instanceof ItemJetpack) {
                ItemJetpack jetpack = (ItemJetpack) stack.getItem();

                if (jetpack.getGas(stack) != null) {
                    if ((Mekanism.keyMap.has(player, KeySync.ASCEND)
                         && jetpack.getMode(stack) == JetpackMode.NORMAL)) {
                        return true;
                    } else if (jetpack.getMode(stack) == JetpackMode.HOVER) {
                        if ((!Mekanism.keyMap.has(player, KeySync.ASCEND)
                             && !Mekanism.keyMap.has(player, KeySync.DESCEND))
                            || (Mekanism.keyMap.has(player, KeySync.ASCEND)
                                && Mekanism.keyMap.has(player, KeySync.DESCEND))) {
                            return !player.onGround;
                        } else if (Mekanism.keyMap.has(player, KeySync.DESCEND)) {
                            return !player.onGround;
                        }

                        return true;
                    }
                }
            }
        }

        return false;
    }

    public static boolean isGasMaskOn(EntityPlayer player) {
        ItemStack tank = player.inventory.armorInventory[2];
        ItemStack mask = player.inventory.armorInventory[3];

        if (tank != null && mask != null) {
            if (tank.getItem() instanceof ItemScubaTank
                && mask.getItem() instanceof ItemGasMask) {
                ItemScubaTank scubaTank = (ItemScubaTank) tank.getItem();

                if (scubaTank.getGas(tank) != null) {
                    if (scubaTank.getFlowing(tank)) {
                        return true;
                    }
                }
            }
        }

        return false;
    }

    public static boolean isFlamethrowerOn(EntityPlayer player) {
        if (Mekanism.flamethrowerActive.contains(player.getCommandSenderName())) {
            if (player.getCurrentEquippedItem() != null
                && player.getCurrentEquippedItem().getItem()
                        instanceof ItemFlamethrower) {
                return true;
            }
        }

        return false;
    }
}