its working

lib/fourletters/application.ex

@@ -10,7 +10,7 @@ defmodule Fourletters.Application do
       # Start the Telemetry supervisor
       FourlettersWeb.Telemetry,
       # Start the letter troll
-      Fourletters.Troll,
+      {Fourletters.Troll, name: Fourletters.Troll},
       # Start the PubSub system
       {Phoenix.PubSub, name: Fourletters.PubSub},
       # Start the Endpoint (http/https)

lib/fourletters_web/controllers/fourletters_controller.ex

@@ -3,25 +3,39 @@ defmodule FourlettersWeb.FourlettersController do
   import Fourletters.Troll
   import ABCD.Fourletters
 
-  def fourletters(conn, %{"messenger" => messenger}) do
-    if String.length(messenger) == 4 do
+  def fourletters(conn, %{"fourletters" => fourletters}) do
+    if String.length(fourletters) == 4 do
 
-      {:ok, sup_pid} = Supervisor.start_link(Fourletters.Troll, [])
       pid = case Supervisor.start_child(
-                  sup_pid, %{id: String.to_atom(messenger),
-                             start: {ABCD.Fourletters, :start_link, [[]]}}) do
+          Fourletters.Troll,
+          %{id: String.to_atom(fourletters), start: {ABCD.Fourletters, :start_link, [["oo"]]}}) do
         {:ok, pid} -> pid
         {:error, {:already_started, pid}} -> pid
       end
       messages = ABCD.Fourletters.get(pid)
-      render(conn, "four.html", messenger: messenger, messages: messages)
+      render(conn, "four.html", fourletters: fourletters, messages: messages)
+    else
+      redirect(conn, to: "/")
     end
-    redirect(conn, to: "/")
   end
 
-  # def fourletters(conn, %{"messenger" => messenger}) do
-  #   render(conn, "nothing.html")
-  # end
+  def addletters(conn, _params) do
+    %{params: params, path_params: path_params} = conn
+    %{"fourletters" => fourletters, "message" => message} = params
+    if String.length(fourletters) == 4 and String.length(message) < 101 do
+
+      pid = case Supervisor.start_child(
+          Fourletters.Troll,
+          %{id: String.to_atom(fourletters), start: {ABCD.Fourletters, :start_link, [["oo"]]}}) do
+        {:ok, pid} -> pid
+        {:error, {:already_started, pid}} -> pid
+      end
+      messages = ABCD.Fourletters.put(pid, message)
+      json(conn, %{fourletters: fourletters, messages: messages})
+    else
+      json(conn, %{error: message})
+    end
+  end
 
   def nothing(conn, _params) do
     render(conn, "nothing.html")

lib/fourletters_web/router.ex

@@ -17,15 +17,17 @@ defmodule FourlettersWeb.Router do
     pipe_through :browser
 
     get "/", FourlettersController, :nothing
-    get "/:messenger", FourlettersController, :fourletters
+    get "/:fourletters", FourlettersController, :fourletters
     # get "/fourletters", FourlettersController, :index
     # get "/fourletters/:messenger", FourlettersController, :show
   end
 
   # Other scopes may use custom stacks.
-  # scope "/api", FourlettersWeb do
-  #   pipe_through :api
-  # end
+  scope "/", FourlettersWeb do
+    pipe_through :api
+
+    post "/:fourletters", FourlettersController, :addletters
+  end
 
   # Enables LiveDashboard only for development
   #

lib/fourletters_web/templates/fourletters/four.html.eex

@@ -1,2 +1,8 @@
-<h1>hey <%= @messenger %></h1>
-<%= @messages %>
+<h1>hey <%= @fourletters %></h1>
+<ul>
+	<%= for message <- @messages do %>
+	<li>
+		<%= message %>
+	</li>
+	<% end %>
+</ul>

mix.exs

@@ -41,7 +41,7 @@ defmodule Fourletters.MixProject do
       {:telemetry_poller, "~> 0.4"},
       {:gettext, "~> 0.11"},
       {:jason, "~> 1.0"},
-      {:plug_cowboy, "~> 2.0"}
+      {:plug_cowboy, "~> 2.2"}
     ]
   end
 

mix.lock

@@ -1,6 +1,5 @@
 %{
   "cowboy": {:hex, :cowboy, "2.9.0", "865dd8b6607e14cf03282e10e934023a1bd8be6f6bacf921a7e2a96d800cd452", [:make, :rebar3], [{:cowlib, "2.11.0", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "1.8.0", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "2c729f934b4e1aa149aff882f57c6372c15399a20d54f65c8d67bef583021bde"},
-  "cowboy_telemetry": {:hex, :cowboy_telemetry, "0.3.1", "ebd1a1d7aff97f27c66654e78ece187abdc646992714164380d8a041eda16754", [:rebar3], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "3a6efd3366130eab84ca372cbd4a7d3c3a97bdfcfb4911233b035d117063f0af"},
   "cowlib": {:hex, :cowlib, "2.11.0", "0b9ff9c346629256c42ebe1eeb769a83c6cb771a6ee5960bd110ab0b9b872063", [:make, :rebar3], [], "hexpm", "2b3e9da0b21c4565751a6d4901c20d1b4cc25cbb7fd50d91d2ab6dd287bc86a9"},
   "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
   "gettext": {:hex, :gettext, "0.18.2", "7df3ea191bb56c0309c00a783334b288d08a879f53a7014341284635850a6e55", [:mix], [], "hexpm", "f9f537b13d4fdd30f3039d33cb80144c3aa1f8d9698e47d7bcbcc8df93b1f5c5"},
@@ -13,7 +12,7 @@
   "phoenix_live_view": {:hex, :phoenix_live_view, "0.15.7", "09720b8e5151b3ca8ef739cd7626d4feb987c69ba0b509c9bbdb861d5a365881", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix, "~> 1.5.7", [hex: :phoenix, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.14", [hex: :phoenix_html, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.2 or ~> 0.5", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "3a756cf662420272d0f1b3b908cce5222163b5a95aa9bab404f9d29aff53276e"},
   "phoenix_pubsub": {:hex, :phoenix_pubsub, "2.0.0", "a1ae76717bb168cdeb10ec9d92d1480fec99e3080f011402c0a2d68d47395ffb", [:mix], [], "hexpm", "c52d948c4f261577b9c6fa804be91884b381a7f8f18450c5045975435350f771"},
   "plug": {:hex, :plug, "1.12.1", "645678c800601d8d9f27ad1aebba1fdb9ce5b2623ddb961a074da0b96c35187d", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.1.1 or ~> 1.2", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "d57e799a777bc20494b784966dc5fbda91eb4a09f571f76545b72a634ce0d30b"},
-  "plug_cowboy": {:hex, :plug_cowboy, "2.5.1", "7cc96ff645158a94cf3ec9744464414f02287f832d6847079adfe0b58761cbd0", [:mix], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:cowboy_telemetry, "~> 0.3", [hex: :cowboy_telemetry, repo: "hexpm", optional: false]}, {:plug, "~> 1.7", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "107d0a5865fa92bcb48e631cc0729ae9ccfa0a9f9a1bd8f01acb513abf1c2d64"},
+  "plug_cowboy": {:hex, :plug_cowboy, "2.3.0", "149a50e05cb73c12aad6506a371cd75750c0b19a32f81866e1a323dda9e0e99d", [:mix], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:plug, "~> 1.7", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "bc595a1870cef13f9c1e03df56d96804db7f702175e4ccacdb8fc75c02a7b97e"},
   "plug_crypto": {:hex, :plug_crypto, "1.2.2", "05654514ac717ff3a1843204b424477d9e60c143406aa94daf2274fdd280794d", [:mix], [], "hexpm", "87631c7ad914a5a445f0a3809f99b079113ae4ed4b867348dd9eec288cecb6db"},
   "ranch": {:hex, :ranch, "1.8.0", "8c7a100a139fd57f17327b6413e4167ac559fbc04ca7448e9be9057311597a1d", [:make, :rebar3], [], "hexpm", "49fbcfd3682fab1f5d109351b61257676da1a2fdbe295904176d5e521a2ddfe5"},
   "telemetry": {:hex, :telemetry, "0.4.3", "a06428a514bdbc63293cd9a6263aad00ddeb66f608163bdec7c8995784080818", [:rebar3], [], "hexpm", "eb72b8365ffda5bed68a620d1da88525e326cb82a75ee61354fc24b844768041"},