package net.lax1dude.eaglercraft.v1_8.plugin.backend_rpc_protocol.pkt.server;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

import net.lax1dude.eaglercraft.v1_8.plugin.backend_rpc_protocol.pkt.EaglerBackendRPCHandler;
import net.lax1dude.eaglercraft.v1_8.plugin.backend_rpc_protocol.pkt.EaglerBackendRPCPacket;

/**
 * Copyright (c) 2024 lax1dude. All Rights Reserved.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 */
public class SPacketRPCResponseTypeWebViewStatus implements EaglerBackendRPCPacket {

	public static final int WEBVIEW_STATE_NOT_SUPPORTED = 0;
	public static final int WEBVIEW_STATE_SERVER_DISABLE = 1;
	public static final int WEBVIEW_STATE_CHANNEL_CLOSED = 2;
	public static final int WEBVIEW_STATE_CHANNEL_OPEN = 3;

	public int requestID;
	public int webviewState;
	public String channelName;

	public SPacketRPCResponseTypeWebViewStatus() {
	}

	public SPacketRPCResponseTypeWebViewStatus(int requestID, int webviewState, String channelName) {
		this.requestID = requestID;
		this.webviewState = webviewState;
		this.channelName = channelName;
	}

	@Override
	public void readPacket(DataInput buffer) throws IOException {
		requestID = buffer.readInt();
		webviewState = buffer.readUnsignedByte();
		if(webviewState == WEBVIEW_STATE_CHANNEL_OPEN) {
			byte[] nameBytes = new byte[buffer.readUnsignedByte()];
			buffer.readFully(nameBytes);
			channelName = new String(nameBytes, StandardCharsets.US_ASCII);
		}
	}

	@Override
	public void writePacket(DataOutput buffer) throws IOException {
		buffer.writeInt(requestID);
		buffer.writeByte(webviewState);
		if(webviewState == WEBVIEW_STATE_CHANNEL_OPEN) {
			if(channelName.length() > 255) {
				throw new IOException("Channel name cannot be more than 255 chars! (got " + channelName.length() + " chars)");
			}
			byte[] nameBytes = channelName.getBytes(StandardCharsets.US_ASCII);
			buffer.writeByte(nameBytes.length);
			buffer.write(nameBytes);
		}
	}

	@Override
	public void handlePacket(EaglerBackendRPCHandler handler) {
		handler.handleServer(this);
	}

	@Override
	public int length() {
		return webviewState == WEBVIEW_STATE_CHANNEL_OPEN ? (6 + channelName.length()) : 5;
	}

}
