import java.io.EOFException;
import java.io.IOException;
import net.runelite.mapping.Export;
import net.runelite.mapping.Implements;
import net.runelite.mapping.ObfuscatedGetter;
import net.runelite.mapping.ObfuscatedName;
import net.runelite.mapping.ObfuscatedSignature;

@ObfuscatedName("mn")
@Implements("BufferedFile")
public class BufferedFile {
	@ObfuscatedName("o")
	@ObfuscatedSignature(
		descriptor = "Lmy;"
	)
	@Export("accessFile")
	AccessFile accessFile;
	@ObfuscatedName("q")
	@Export("readBuffer")
	byte[] readBuffer;
	@ObfuscatedName("j")
	@ObfuscatedGetter(
		longValue = 183648846884359197L
	)
	@Export("readBufferOffset")
	long readBufferOffset;
	@ObfuscatedName("p")
	@ObfuscatedGetter(
		intValue = 1553809797
	)
	@Export("readBufferLength")
	int readBufferLength;
	@ObfuscatedName("g")
	@Export("writeBuffer")
	byte[] writeBuffer;
	@ObfuscatedName("n")
	@ObfuscatedGetter(
		longValue = -2985208532115456417L
	)
	@Export("writeBufferOffset")
	long writeBufferOffset;
	@ObfuscatedName("u")
	@ObfuscatedGetter(
		intValue = 457646537
	)
	@Export("writeBufferLength")
	int writeBufferLength;
	@ObfuscatedName("a")
	@ObfuscatedGetter(
		longValue = 2498512168954711415L
	)
	@Export("offset")
	long offset;
	@ObfuscatedName("z")
	@ObfuscatedGetter(
		longValue = -3113265757492371609L
	)
	@Export("fileLength")
	long fileLength;
	@ObfuscatedName("w")
	@ObfuscatedGetter(
		longValue = 6675249402129041573L
	)
	@Export("length")
	long length;
	@ObfuscatedName("y")
	@ObfuscatedGetter(
		longValue = 1854591788033998237L
	)
	@Export("fileOffset")
	long fileOffset;

	@ObfuscatedSignature(
		descriptor = "(Lmy;II)V"
	)
	public BufferedFile(AccessFile var1, int var2, int var3) throws IOException {
		this.readBufferOffset = -1L;
		this.writeBufferOffset = -1L;
		this.writeBufferLength = 0;
		this.accessFile = var1;
		this.length = this.fileLength = var1.length();
		this.readBuffer = new byte[var2];
		this.writeBuffer = new byte[var3];
		this.offset = 0L;
	}

	@ObfuscatedName("m")
	@ObfuscatedSignature(
		descriptor = "(I)V",
		garbageValue = "159388731"
	)
	@Export("close")
	public void close() throws IOException {
		this.flush();
		this.accessFile.close();
	}

	@ObfuscatedName("o")
	@Export("seek")
	public void seek(long var1) throws IOException {
		if (var1 < 0L) {
			throw new IOException("");
		} else {
			this.offset = var1;
		}
	}

	@ObfuscatedName("q")
	@ObfuscatedSignature(
		descriptor = "(I)J",
		garbageValue = "243378114"
	)
	@Export("length")
	public long length() {
		return this.length;
	}

	@ObfuscatedName("j")
	@ObfuscatedSignature(
		descriptor = "([BI)V",
		garbageValue = "1810550632"
	)
	@Export("readFully")
	public void readFully(byte[] var1) throws IOException {
		this.read(var1, 0, var1.length);
	}

	@ObfuscatedName("p")
	@ObfuscatedSignature(
		descriptor = "([BIIB)V",
		garbageValue = "-4"
	)
	@Export("read")
	public void read(byte[] var1, int var2, int var3) throws IOException {
		try {
			if (var3 + var2 > var1.length) {
				throw new ArrayIndexOutOfBoundsException(var3 + var2 - var1.length);
			}

			if (this.writeBufferOffset != -1L && this.offset >= this.writeBufferOffset && (long)var3 + this.offset <= this.writeBufferOffset + (long)this.writeBufferLength) {
				System.arraycopy(this.writeBuffer, (int)(this.offset - this.writeBufferOffset), var1, var2, var3);
				this.offset += (long)var3;
				return;
			}

			long var4 = this.offset;
			int var7 = var3;
			int var8;
			if (this.offset >= this.readBufferOffset && this.offset < (long)this.readBufferLength + this.readBufferOffset) {
				var8 = (int)((long)this.readBufferLength - (this.offset - this.readBufferOffset));
				if (var8 > var3) {
					var8 = var3;
				}

				System.arraycopy(this.readBuffer, (int)(this.offset - this.readBufferOffset), var1, var2, var8);
				this.offset += (long)var8;
				var2 += var8;
				var3 -= var8;
			}

			if (var3 > this.readBuffer.length) {
				this.accessFile.seek(this.offset);

				for (this.fileOffset = this.offset; var3 > 0; var3 -= var8) {
					var8 = this.accessFile.read(var1, var2, var3);
					if (var8 == -1) {
						break;
					}

					this.fileOffset += (long)var8;
					this.offset += (long)var8;
					var2 += var8;
				}
			} else if (var3 > 0) {
				this.load();
				var8 = var3;
				if (var3 > this.readBufferLength) {
					var8 = this.readBufferLength;
				}

				System.arraycopy(this.readBuffer, 0, var1, var2, var8);
				var2 += var8;
				var3 -= var8;
				this.offset += (long)var8;
			}

			if (this.writeBufferOffset != -1L) {
				if (this.writeBufferOffset > this.offset && var3 > 0) {
					var8 = var2 + (int)(this.writeBufferOffset - this.offset);
					if (var8 > var3 + var2) {
						var8 = var3 + var2;
					}

					while (var2 < var8) {
						var1[var2++] = 0;
						--var3;
						++this.offset;
					}
				}

				long var13 = -1L;
				long var10 = -1L;
				if (this.writeBufferOffset >= var4 && this.writeBufferOffset < var4 + (long)var7) {
					var13 = this.writeBufferOffset;
				} else if (var4 >= this.writeBufferOffset && var4 < this.writeBufferOffset + (long)this.writeBufferLength) {
					var13 = var4;
				}

				if ((long)this.writeBufferLength + this.writeBufferOffset > var4 && (long)this.writeBufferLength + this.writeBufferOffset <= var4 + (long)var7) {
					var10 = (long)this.writeBufferLength + this.writeBufferOffset;
				} else if (var4 + (long)var7 > this.writeBufferOffset && (long)var7 + var4 <= this.writeBufferOffset + (long)this.writeBufferLength) {
					var10 = var4 + (long)var7;
				}

				if (var13 > -1L && var10 > var13) {
					int var12 = (int)(var10 - var13);
					System.arraycopy(this.writeBuffer, (int)(var13 - this.writeBufferOffset), var1, (int)(var13 - var4) + var2, var12);
					if (var10 > this.offset) {
						var3 = (int)((long)var3 - (var10 - this.offset));
						this.offset = var10;
					}
				}
			}
		} catch (IOException var16) {
			this.fileOffset = -1L;
			throw var16;
		}

		if (var3 > 0) {
			throw new EOFException();
		}
	}

	@ObfuscatedName("g")
	@ObfuscatedSignature(
		descriptor = "(I)V",
		garbageValue = "1659142795"
	)
	@Export("load")
	void load() throws IOException {
		this.readBufferLength = 0;
		if (this.offset != this.fileOffset) {
			this.accessFile.seek(this.offset);
			this.fileOffset = this.offset;
		}

		int var2;
		for (this.readBufferOffset = this.offset; this.readBufferLength < this.readBuffer.length; this.readBufferLength += var2) {
			int var1 = this.readBuffer.length - this.readBufferLength;
			if (var1 > 200000000) {
				var1 = 200000000;
			}

			var2 = this.accessFile.read(this.readBuffer, this.readBufferLength, var1);
			if (var2 == -1) {
				break;
			}

			this.fileOffset += (long)var2;
		}

	}

	@ObfuscatedName("n")
	@ObfuscatedSignature(
		descriptor = "([BIII)V",
		garbageValue = "1917244707"
	)
	@Export("write")
	public void write(byte[] var1, int var2, int var3) throws IOException {
		try {
			if (this.offset + (long)var3 > this.length) {
				this.length = (long)var3 + this.offset;
			}

			if (this.writeBufferOffset != -1L && (this.offset < this.writeBufferOffset || this.offset > (long)this.writeBufferLength + this.writeBufferOffset)) {
				this.flush();
			}

			if (this.writeBufferOffset != -1L && this.offset + (long)var3 > this.writeBufferOffset + (long)this.writeBuffer.length) {
				int var4 = (int)((long)this.writeBuffer.length - (this.offset - this.writeBufferOffset));
				System.arraycopy(var1, var2, this.writeBuffer, (int)(this.offset - this.writeBufferOffset), var4);
				this.offset += (long)var4;
				var2 += var4;
				var3 -= var4;
				this.writeBufferLength = this.writeBuffer.length;
				this.flush();
			}

			if (var3 <= this.writeBuffer.length) {
				if (var3 > 0) {
					if (-1L == this.writeBufferOffset) {
						this.writeBufferOffset = this.offset;
					}

					System.arraycopy(var1, var2, this.writeBuffer, (int)(this.offset - this.writeBufferOffset), var3);
					this.offset += (long)var3;
					if (this.offset - this.writeBufferOffset > (long)this.writeBufferLength) {
						this.writeBufferLength = (int)(this.offset - this.writeBufferOffset);
					}

				}
			} else {
				if (this.fileOffset != this.offset) {
					this.accessFile.seek(this.offset);
					this.fileOffset = this.offset;
				}

				this.accessFile.write(var1, var2, var3);
				this.fileOffset += (long)var3;
				if (this.fileOffset > this.fileLength) {
					this.fileLength = this.fileOffset;
				}

				long var9 = -1L;
				long var6 = -1L;
				if (this.offset >= this.readBufferOffset && this.offset < (long)this.readBufferLength + this.readBufferOffset) {
					var9 = this.offset;
				} else if (this.readBufferOffset >= this.offset && this.readBufferOffset < this.offset + (long)var3) {
					var9 = this.readBufferOffset;
				}

				if (this.offset + (long)var3 > this.readBufferOffset && (long)var3 + this.offset <= this.readBufferOffset + (long)this.readBufferLength) {
					var6 = (long)var3 + this.offset;
				} else if ((long)this.readBufferLength + this.readBufferOffset > this.offset && (long)this.readBufferLength + this.readBufferOffset <= (long)var3 + this.offset) {
					var6 = this.readBufferOffset + (long)this.readBufferLength;
				}

				if (var9 > -1L && var6 > var9) {
					int var8 = (int)(var6 - var9);
					System.arraycopy(var1, (int)(var9 + (long)var2 - this.offset), this.readBuffer, (int)(var9 - this.readBufferOffset), var8);
				}

				this.offset += (long)var3;
			}
		} catch (IOException var12) {
			this.fileOffset = -1L;
			throw var12;
		}
	}

	@ObfuscatedName("u")
	@ObfuscatedSignature(
		descriptor = "(I)V",
		garbageValue = "-1996252506"
	)
	@Export("flush")
	void flush() throws IOException {
		if (this.writeBufferOffset != -1L) {
			if (this.writeBufferOffset != this.fileOffset) {
				this.accessFile.seek(this.writeBufferOffset);
				this.fileOffset = this.writeBufferOffset;
			}

			this.accessFile.write(this.writeBuffer, 0, this.writeBufferLength);
			this.fileOffset += (long)this.writeBufferLength * -743906103946903551L;
			if (this.fileOffset > this.fileLength) {
				this.fileLength = this.fileOffset;
			}

			long var1 = -1L;
			long var3 = -1L;
			if (this.writeBufferOffset >= this.readBufferOffset && this.writeBufferOffset < this.readBufferOffset + (long)this.readBufferLength) {
				var1 = this.writeBufferOffset;
			} else if (this.readBufferOffset >= this.writeBufferOffset && this.readBufferOffset < this.writeBufferOffset + (long)this.writeBufferLength) {
				var1 = this.readBufferOffset;
			}

			if (this.writeBufferOffset + (long)this.writeBufferLength > this.readBufferOffset && this.writeBufferOffset + (long)this.writeBufferLength <= this.readBufferOffset + (long)this.readBufferLength) {
				var3 = this.writeBufferOffset + (long)this.writeBufferLength;
			} else if (this.readBufferOffset + (long)this.readBufferLength > this.writeBufferOffset && (long)this.readBufferLength + this.readBufferOffset <= (long)this.writeBufferLength + this.writeBufferOffset) {
				var3 = this.readBufferOffset + (long)this.readBufferLength;
			}

			if (var1 > -1L && var3 > var1) {
				int var5 = (int)(var3 - var1);
				System.arraycopy(this.writeBuffer, (int)(var1 - this.writeBufferOffset), this.readBuffer, (int)(var1 - this.readBufferOffset), var5);
			}

			this.writeBufferOffset = -1L;
			this.writeBufferLength = 0;
		}

	}
}