/*
 * This file is part of Sponge, licensed under the MIT License (MIT).
 *
 * Copyright (c) SpongePowered <https://www.spongepowered.org>
 * Copyright (c) contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.spongepowered.common.mixin.core.world;

import net.minecraft.world.ChunkCache;
import net.minecraft.world.World;
import net.minecraft.world.chunk.Chunk;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Redirect;
import org.spongepowered.common.interfaces.IMixinChunk;
import org.spongepowered.common.interfaces.world.gen.IMixinChunkProviderServer;

@Mixin(ChunkCache.class)
public class MixinChunkCache {

    @Redirect(method = "<init>", at = @At(value = "INVOKE", target = "Lnet/minecraft/world/World;getChunkFromChunkCoords(II)Lnet/minecraft/world/chunk/Chunk;"))
    private Chunk onConstruct(World worldIn, int chunkX, int chunkZ) {
        final net.minecraft.world.chunk.Chunk chunk =
                ((IMixinChunkProviderServer) worldIn.getChunkProvider()).getLoadedChunkWithoutMarkingActive(chunkX, chunkZ);
        IMixinChunk spongeChunk = (IMixinChunk) chunk;
        if (chunk == null || chunk.unloadQueued || !spongeChunk.areNeighborsLoaded()) {
            return null;
        }

        return chunk;
    }
}

/*
 * This file is part of Sponge, licensed under the MIT License (MIT).
 *
 * Copyright (c) SpongePowered <https://www.spongepowered.org>
 * Copyright (c) contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.spongepowered.common.mixin.core.world;

import net.minecraft.world.ChunkCache;
import net.minecraft.world.World;
import net.minecraft.world.chunk.Chunk;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Redirect;
import org.spongepowered.common.interfaces.IMixinChunk;
import org.spongepowered.common.interfaces.world.gen.IMixinChunkProviderServer;

@Mixin(ChunkCache.class)
public class MixinChunkCache {

    @Redirect(method = "<init>", at = @At(value = "INVOKE", target = "Lnet/minecraft/world/World;getChunkFromChunkCoords(II)Lnet/minecraft/world/chunk/Chunk;"))
    private Chunk onConstruct(World worldIn, int chunkX, int chunkZ) {
        if (worldIn.isRemote) {
            return worldIn.getChunkFromChunkCoords(chunkX, chunkZ);
        }

        final net.minecraft.world.chunk.Chunk chunk =
                ((IMixinChunkProviderServer) worldIn.getChunkProvider()).getLoadedChunkWithoutMarkingActive(chunkX, chunkZ);
        IMixinChunk spongeChunk = (IMixinChunk) chunk;
        if (chunk == null || chunk.unloadQueued || !spongeChunk.areNeighborsLoaded()) {
            return null;
        }

        return chunk;
    }
}

Fix SF client crash on world join.