make chatters GenServers instead of runaway Tasks

(so they can keep their own state!)

lib/ircked_elixir/chatter.ex

@@ -1,32 +1,59 @@
 defmodule IrckedElixir.Chatter do
+  use GenServer
+
   alias IrckedElixir.Chatter.Message, as: Message
   alias IrckedElixir.Chatter.Privmsg, as: Privmsg
-  def start(server, port, nick) do
-    {:ok, socket} = :gen_tcp.connect(to_charlist(server), port, [:binary, active: false])
 
-    :gen_tcp.send(socket, ["USER ", nick, " 0 * :", nick, "\r\n"])
-    :gen_tcp.send(socket, ["NICK ", nick, "\r\n"])
+  @impl true
+  def init(starting_state) do
+    {:ok, socket} = :gen_tcp.connect(to_charlist(starting_state.ip), starting_state.port, [:binary, active: false])
+    IO.puts(inspect starting_state)
+    starting_state = %{starting_state | sock: socket}
+    IO.puts(inspect starting_state)
+    IO.puts(inspect socket)
+    :gen_tcp.send(socket, ["USER ", starting_state.nick, " 0 * :", starting_state.nick, "\r\n"])
+    :gen_tcp.send(socket, ["NICK ", starting_state.nick, "\r\n"])
+
+    send(self(), {:run, starting_state})
+    {:ok, starting_state}
+  end
+
+  @impl true
+  def handle_info({:sendmsg, to, body}, state) do
+    Privmsg.construct(state.nick, to, body).message |> Message.send(state.sock)
+    {:noreply, state}
+  end
+
+  @impl true
+  def handle_info({:run, start_state}, _state) do
+    run(start_state)
+    {:noreply, start_state}
+  end
 
-    run(socket)
+  def start_link(starting_state) do
+    GenServer.start_link(__MODULE__, starting_state)
   end
-  def run(socket) do
-    {:ok, data} = :gen_tcp.recv(socket, 0)
-    String.split(data, "\r\n") |> Enum.each(fn raw -> handle(Message.parse(raw), socket) end)
-    run(socket)
+
+  def sendmsg(to, body) do
+    send(self(), {:sendmsg, to, body})
   end
-  def send(socket, to, body) do
-    Privmsg.construct("functism", to, body).message |> Message.send(socket)
+
+  def run(state) do
+    {:ok, data} = :gen_tcp.recv(state.sock, 0)
+    String.split(data, "\r\n") |> Enum.each(fn raw -> handle(Message.parse(raw), state) end)
+    run(state)
   end
-  def handle(msg, socket) do
+
+  def handle(msg, state) do
     case msg.command do
-      "PING" -> Message.construct("", "PONG", msg.parameters) |> Message.send(socket)
-      "001" -> Message.construct("", "JOIN", ["#qrs"]) |> Message.send(socket)
+      "PING" -> Message.construct("", "PONG", msg.parameters) |> Message.send(state.sock)
+      "001" -> Message.construct("", "JOIN", ["#qrs"]) |> Message.send(state.sock)
       "PRIVMSG" ->
         pm = Privmsg.parse(msg)
         IO.puts(inspect pm)
         case pm.body do
-          ".bots" -> Privmsg.construct("functism", pm.to, "https://github.com/kurisufriend/ircked_elixir").message |> Message.send(socket)
-          ".hello" -> Privmsg.construct("functism", pm.to, "hai").message |> Message.send(socket)
+          ".bots" -> Privmsg.construct("functism", pm.to, "https://github.com/kurisufriend/ircked_elixir").message |> Message.send(state.sock)
+          ".hello" -> Privmsg.construct("functism", pm.to, "hai").message |> Message.send(state.sock)
           _ -> ""
         end
 

lib/ircked_elixir/chatter/state.ex

@@ -1,3 +1,3 @@
 defmodule IrckedElixir.Chatter.State do
-  defstruct ip: "", port: 0, nick: ""
+  defstruct ip: "", port: 0, nick: "", sock: nil
 end

lib/ircked_elixir/overseer.ex

@@ -12,7 +12,7 @@ defmodule IrckedElixir.Overseer do
 
   @impl true
   def init(:ok) do
-    children = 1..@chatters |> Enum.to_list |> Enum.map(fn n -> %{id: "chatter"<>to_string(n), start: {Task, :start_link, [fn -> IrckedElixir.Chatter.start(@server_address, @server_port, @base_nick <> to_string(n)) end]}} end)
+    children = 1..@chatters |> Enum.to_list |> Enum.map(fn n -> %{id: "chatter"<>to_string(n), start: {IrckedElixir.Chatter, :start_link, [%IrckedElixir.Chatter.State{ip: @server_address, port: @server_port, nick: @base_nick <> to_string(n)}]}} end)
     Supervisor.init(children, strategy: :one_for_one)
   end
 end