/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
 *
 * Applied Energistics 2 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Applied Energistics 2 is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.tile.misc;

import appeng.api.config.Actionable;
import appeng.api.networking.IGridNode;
import appeng.api.networking.energy.IEnergyGrid;
import appeng.api.networking.ticking.IGridTickable;
import appeng.api.networking.ticking.TickRateModulation;
import appeng.api.networking.ticking.TickingRequest;
import appeng.api.util.AECableType;
import appeng.api.util.DimensionalCoord;
import appeng.core.settings.TickRates;
import appeng.helpers.Reflected;
import appeng.me.GridAccessException;
import appeng.tile.TileEvent;
import appeng.tile.events.TileEventType;
import appeng.tile.grid.AENetworkInvTile;
import appeng.tile.inventory.AppEngInternalInventory;
import appeng.tile.inventory.InvOperation;
import appeng.util.Platform;
import io.netty.buffer.ByteBuf;
import net.minecraft.init.Items;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntityFurnace;
import net.minecraftforge.common.util.ForgeDirection;

public class TileVibrationChamber extends AENetworkInvTile implements IGridTickable {
    private static final int FUEL_SLOT_INDEX = 0;
    private static final double POWER_PER_TICK = 5;
    private static final int[] ACCESSIBLE_SLOTS = { FUEL_SLOT_INDEX };
    private static final int MAX_BURN_SPEED = 200;
    private static final double DILATION_SCALING = 100.0;
    private static final int MIN_BURN_SPEED = 20;
    private final IInventory inv = new AppEngInternalInventory(this, 1);

    private int burnSpeed = 100;
    private double burnTime = 0;
    private double maxBurnTime = 0;

    // client side..
    public boolean isOn;

    public TileVibrationChamber() {
        this.getProxy().setIdlePowerUsage(0);
        this.getProxy().setFlags();
    }

    @Override
    public AECableType getCableConnectionType(final ForgeDirection dir) {
        return AECableType.COVERED;
    }

    @Reflected
    @TileEvent(TileEventType.NETWORK_READ)
    public boolean hasUpdate(final ByteBuf data) {
        final boolean wasOn = this.isOn;

        this.isOn = data.readBoolean();

        return wasOn != this.isOn; // TESR doesn't need updates!
    }

    @Reflected
    @TileEvent(TileEventType.NETWORK_WRITE)
    public void writeToNetwork(final ByteBuf data) {
        data.writeBoolean(this.getBurnTime() > 0);
    }

    @TileEvent(TileEventType.WORLD_NBT_WRITE)
    public void writeToNBT_TileVibrationChamber(final NBTTagCompound data) {
        data.setDouble("burnTime", this.getBurnTime());
        data.setDouble("maxBurnTime", this.getMaxBurnTime());
        data.setInteger("burnSpeed", this.getBurnSpeed());
    }

    @TileEvent(TileEventType.WORLD_NBT_READ)
    public void readFromNBT_TileVibrationChamber(final NBTTagCompound data) {
        this.setBurnTime(data.getDouble("burnTime"));
        this.setMaxBurnTime(data.getDouble("maxBurnTime"));
        this.setBurnSpeed(data.getInteger("burnSpeed"));
    }

    @Override
    public IInventory getInternalInventory() {
        return this.inv;
    }

    @Override
    public boolean isItemValidForSlot(final int i, final ItemStack itemstack) {
        return TileEntityFurnace.getItemBurnTime(itemstack) > 0;
    }

    @Override
    public void onChangeInventory(
        final IInventory inv,
        final int slot,
        final InvOperation mc,
        final ItemStack removed,
        final ItemStack added
    ) {
        if (this.getBurnTime() <= 0) {
            if (this.canEatFuel()) {
                try {
                    this.getProxy().getTick().wakeDevice(this.getProxy().getNode());
                } catch (final GridAccessException e) {
                    // wake up!
                }
            }
        }
    }

    @Override
    public boolean
    canExtractItem(final int slotIndex, final ItemStack extractedItem, final int side) {
        return extractedItem.getItem() == Items.bucket;
    }

    @Override
    public int[] getAccessibleSlotsBySide(final ForgeDirection side) {
        return ACCESSIBLE_SLOTS;
    }

    private boolean canEatFuel() {
        final ItemStack is = this.getStackInSlot(FUEL_SLOT_INDEX);
        if (is != null) {
            final int newBurnTime = TileEntityFurnace.getItemBurnTime(is);
            if (newBurnTime > 0 && is.stackSize > 0) {
                return true;
            }
        }
        return false;
    }

    @Override
    public DimensionalCoord getLocation() {
        return new DimensionalCoord(this);
    }

    @Override
    public TickingRequest getTickingRequest(final IGridNode node) {
        if (this.getBurnTime() <= 0) {
            this.eatFuel();
        }

        return new TickingRequest(
            TickRates.VibrationChamber.getMin(),
            TickRates.VibrationChamber.getMax(),
            this.getBurnTime() <= 0,
            false
        );
    }

    @Override
    public TickRateModulation
    tickingRequest(final IGridNode node, final int ticksSinceLastCall) {
        if (this.getBurnTime() <= 0) {
            this.eatFuel();

            if (this.getBurnTime() > 0) {
                return TickRateModulation.URGENT;
            }

            this.setBurnSpeed(100);
            return TickRateModulation.SLEEP;
        }

        this.setBurnSpeed(
            Math.max(MIN_BURN_SPEED, Math.min(this.getBurnSpeed(), MAX_BURN_SPEED))
        );
        final double dilation = this.getBurnSpeed() / DILATION_SCALING;

        double timePassed = ticksSinceLastCall * dilation;
        this.setBurnTime(this.getBurnTime() - timePassed);
        if (this.getBurnTime() < 0) {
            timePassed += this.getBurnTime();
            this.setBurnTime(0);
        }

        try {
            final IEnergyGrid grid = this.getProxy().getEnergy();
            final double newPower = timePassed * POWER_PER_TICK;
            final double overFlow = grid.injectPower(newPower, Actionable.SIMULATE);

            // burn the over flow.
            grid.injectPower(Math.max(0.0, newPower - overFlow), Actionable.MODULATE);

            if (overFlow > 0) {
                this.setBurnSpeed(this.getBurnSpeed() - ticksSinceLastCall);
            } else {
                this.setBurnSpeed(this.getBurnSpeed() + ticksSinceLastCall);
            }

            this.setBurnSpeed(
                Math.max(MIN_BURN_SPEED, Math.min(this.getBurnSpeed(), MAX_BURN_SPEED))
            );
            return overFlow > 0 ? TickRateModulation.SLOWER : TickRateModulation.FASTER;
        } catch (final GridAccessException e) {
            this.setBurnSpeed(this.getBurnSpeed() - ticksSinceLastCall);
            this.setBurnSpeed(
                Math.max(MIN_BURN_SPEED, Math.min(this.getBurnSpeed(), MAX_BURN_SPEED))
            );
            return TickRateModulation.SLOWER;
        }
    }

    private void eatFuel() {
        final ItemStack is = this.getStackInSlot(FUEL_SLOT_INDEX);
        if (is != null) {
            final int newBurnTime = TileEntityFurnace.getItemBurnTime(is);
            if (newBurnTime > 0 && is.stackSize > 0) {
                this.setBurnTime(this.getBurnTime() + newBurnTime);
                this.setMaxBurnTime(this.getBurnTime());
                is.stackSize--;
                if (is.stackSize <= 0) {
                    ItemStack container = null;

                    if (is.getItem() != null && is.getItem().hasContainerItem(is)) {
                        container = is.getItem().getContainerItem(is);
                    }

                    this.setInventorySlotContents(0, container);
                } else {
                    this.setInventorySlotContents(0, is);
                }

                this.markDirty();
            }
        }

        if (this.getBurnTime() > 0) {
            try {
                this.getProxy().getTick().wakeDevice(this.getProxy().getNode());
            } catch (final GridAccessException e) {
                // gah!
            }
        }

        // state change
        if ((!this.isOn && this.getBurnTime() > 0)
            || (this.isOn && this.getBurnTime() <= 0)) {
            this.isOn = this.getBurnTime() > 0;
            this.markForUpdate();

            if (this.hasWorldObj()) {
                Platform.notifyBlocksOfNeighbors(
                    this.worldObj, this.xCoord, this.yCoord, this.zCoord
                );
            }
        }
    }

    public int getBurnSpeed() {
        return this.burnSpeed;
    }

    private void setBurnSpeed(final int burnSpeed) {
        this.burnSpeed = burnSpeed;
    }

    public double getMaxBurnTime() {
        return this.maxBurnTime;
    }

    private void setMaxBurnTime(final double maxBurnTime) {
        this.maxBurnTime = maxBurnTime;
    }

    public double getBurnTime() {
        return this.burnTime;
    }

    private void setBurnTime(final double burnTime) {
        this.burnTime = burnTime;
    }
}