1 files changed, 146 insertions, 0 deletions
diff --git a/src/main/java/net/cshift/transit/network/Channel.java b/src/main/java/net/cshift/transit/network/Channel.java
new file mode 100644
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+++ b/src/main/java/net/cshift/transit/network/Channel.java
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+/*
+	MIT License
+
+	Copyright (c) 2023 Kyle Gunger
+	
+	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 net.cshift.transit.network;
+
+import net.cshift.transit.network.packet.IStaticPacket;
+import net.cshift.transit.type.group.GroupRegistry;
+import net.cshift.transit.type.group.TypeGroup;
+
+/**
+ * @author Kyle Gunger
+ * @apiNote A channel represents a connection between two nodes.  It is able to send data in packets, and serves as a way to organize incoming traffic.
+ * @param <D> The type of data the packets will be transfering
+ */
+public final class Channel<D> {
+    private INode to;
+    private int id;
+    private String group;
+    private Class<D> baseClass;
+
+    /** This constructor should be called by a node approving a connection.  The approving node can give the connection an ID and group.
+     * Negative IDs indicate a terminated connection, so do not initialize the class with a negative ID.
+     * 
+     * @param node The recieving node
+     * @param id The channel's id, as assigned by the recieving node.  In most cases, this will match the pool ID as a way to match channels to pools.
+     * @param group 
+     */
+	public Channel(INode node, int id, String group, Class<D> baseClass)
+	{
+        to = node;
+        this.id = id;
+        this.group = group;
+        this.baseClass = baseClass;
+	}
+
+
+
+    // ####################
+    // # Channel specific #
+    // ####################
+
+    /** The recieving INode
+     * 
+     * @return
+     */
+    public INode getReciever()
+    {
+        return to;
+    }
+
+    /** The ID of the connection, assigned by the recieving INode
+     * 
+     * @return
+     */
+    public int getID()
+    {
+        return id;
+    }
+
+    /** The group that the channel operates on
+     * 
+     * @return
+     */
+    public TypeGroup<D> getGroup() {
+        return GroupRegistry.<D>groupByID(group, baseClass);
+    }
+
+    /** Returns true if the connection has been terminated
+     * 
+     * @return
+     */
+    public boolean isTerminated()
+    {
+        return id < 0;
+    }
+
+
+
+    // ################################
+    // # Info from the recieving node #
+    // ################################
+
+    /** Pressure
+	 *
+     * @apiNote This part of the api is not properly documented yet, and it's use is not reccommended for cross-mod communications.
+	 * @return A Number representing the pressure from the channel (in base group units).
+	 */
+	public Number pressure()
+    {
+        return to.getPressure(this);
+    }
+
+	/** Max transfer rate
+	 * 
+	 * @return A Number representing the max transfer rate from the channel (in base group units per tick).
+	 */
+	public Number rate()
+    {
+        return to.getRate(this);
+    }
+
+
+
+    // ################################
+    // # Interact with the other node #
+    // ################################
+
+    /** Terminates the connection and relays the termination to the recieving node
+     */
+    public void terminate()
+    {
+        id = -1;
+        to.onTerminate(this);
+    }
+
+    /** Send a packet to the recieving node
+     * 
+     * @param packet the packet to send
+     * @return The overflow data if the packet is only partially accepted. {@code null} otherwise.
+     */
+    public IStaticPacket<D> send(IStaticPacket<D> packet)
+    {
+        return to.<D>accept(packet, this);
+    }
+}