ecto works now

lib/vonbraun/application.ex

@@ -8,6 +8,7 @@ defmodule Vonbraun.Application do
   @impl true
   def start(_type, _args) do
     children = [
+      Vonbraun.Repo,
       {Bandit, scheme: :http, plug: Vonbraun.MyRouter, port: 4012}
     ]
 

lib/vonbraun/ecto/schema/pair.ex

@@ -1,10 +1,33 @@
 defmodule Vonbraun.Ecto.Schema.Pair do
   use Ecto.Schema
+  alias Ecto.Changeset
+  alias Vonbraun.Repo
 
-  @primary_key {:key, :binary_id, autogenerate: false}
+  @primary_key {:key, :string, autogenerate: false}
 
   schema "pairs" do
     field(:value, :string)
     timestamps()
   end
+
+  def changeset(struct, params \\ %{}) do
+    struct
+    |> Changeset.cast(params, [:value])
+  end
+
+  def set(key, value) do
+    case Repo.get(__MODULE__, key) do
+      nil ->
+        changeset(%__MODULE__{key: key}, %{value: value})
+        |> Repo.insert()
+
+      pair ->
+        changeset(pair, %{value: value})
+        |> Repo.update()
+    end
+  end
+
+  def get(key) do
+    Repo.get(__MODULE__, key)
+  end
 end

lib/vonbraun/inbox_router.ex

@@ -14,4 +14,14 @@ defmodule Vonbraun.InboxRouter do
       send_resp(conn, 404, "fuck off")
     end
   end
+
+  post "/" do
+    nickname = Application.fetch_env!(:vonbraun, :nickname)
+
+    if conn.params["user"] == nickname do
+      send_resp(conn, 200, "ok")
+    else
+      send_resp(conn, 404, "fuck off")
+    end
+  end
 end

lib/vonbraun/router.ex

@@ -2,6 +2,7 @@ defmodule Vonbraun.MyRouter do
   use Plug.Router
   require Logger
 
+  alias Vonbraun.Ecto.Schema.Pair
   alias Vonbraun.InboxRouter
 
   plug(:match)
@@ -224,6 +225,27 @@ defmodule Vonbraun.MyRouter do
   forward("/inbox", to: InboxRouter)
   forward("/users/:user/inbox", to: InboxRouter)
 
+  post "/pairs/:key/:value" do
+    key = conn.params["key"]
+    value = conn.params["value"]
+    Pair.set(key, value)
+
+    send_resp(conn, 200, "ok")
+  end
+
+  get "/pairs/:key" do
+    key = conn.params["key"]
+    pair = Pair.get(key)
+
+    case pair do
+      nil ->
+        send_resp(conn, 404, "fuck off")
+
+      %{:value => value} ->
+        send_resp(conn, 200, value)
+    end
+  end
+
   match _ do
     send_resp(conn, 404, "fuck off")
   end