Setup basic Plug.Router framework for serving requests

Rather than use a full blown framework*, adding basic routing with
Plug.Router seems to make more sense, since I'm not planning on hosting
any content through this app. The app itself will just be endpoints for
all available services that redirect the user to an available instance
for the requested service.

Note that I might change my mind about this, but that's unlikely. At
most there would just be a home page with info about available
instances, but even then that seems kinda pointless. Trying to keep this
as absolutely simple as possible.

*like Phoenix

8 files changed, 59 insertions, 3 deletions

diff --git a/.formatter.exs b/.formatter.exs
new file mode 100644
index 0000000..d2cda26
--- /dev/null
+++ b/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/lib/privacy_revolver.ex b/lib/privacy_revolver.ex
new file mode 100644
index 0000000..5de8e06
--- /dev/null
+++ b/lib/privacy_revolver.ex
@@ -0,0 +1,18 @@
+defmodule PrivacyRevolver do
+  @moduledoc """
+  Documentation for `PrivacyRevolver`.
+  """
+
+  @doc """
+  Hello world.
+
+  ## Examples
+
+      iex> PrivacyRevolver.hello()
+      :world
+
+  """
+  def hello do
+    :world
+  end
+end
diff --git a/lib/privacy_revolver/application.ex b/lib/privacy_revolver/application.ex
new file mode 100644
index 0000000..de38e6e
--- /dev/null
+++ b/lib/privacy_revolver/application.ex
@@ -0,0 +1,15 @@
+defmodule PrivacyRevolver.Application do
+  @moduledoc false
+
+  use Application
+
+  @impl true
+  def start(_type, _args) do
+    children = [
+      Plug.Cowboy.child_spec(scheme: :http, plug: PrivacyRevolver.Router, options: [port: 4001])
+    ]
+
+    opts = [strategy: :one_for_one, name: PrivacyRevolver.Supervisor]
+    Supervisor.start_link(children, opts)
+  end
+end
diff --git a/lib/privacy_revolver/router.ex b/lib/privacy_revolver/router.ex
new file mode 100644
index 0000000..cf702fe
--- /dev/null
+++ b/lib/privacy_revolver/router.ex
@@ -0,0 +1,10 @@
+defmodule PrivacyRevolver.Router do
+  use Plug.Router
+
+  plug :match
+  plug :dispatch
+
+  get "/ping" do
+    send_resp(conn, 200, "pong")
+  end
+end
diff --git a/mix.exs b/mix.exs
index 3a85d2d..7c1c723 100644
--- a/mix.exs
+++ b/mix.exs
@@ -3,7 +3,7 @@ defmodule RouterExample.MixProject do
 
   def project do
     [
-      app: :router_example,
+      app: :privacy_revolver,
       version: "0.1.0",
       elixir: "~> 1.8",
       start_permanent: Mix.env() == :prod,
@@ -15,7 +15,7 @@ defmodule RouterExample.MixProject do
   def application do
     [
       extra_applications: [:logger],
-      mod: {RouterExample.Application, []}
+      mod: {PrivacyRevolver.Application, []}
     ]
   end
 
diff --git a/mix.lock b/mix.lock
index b5071fd..1ada2e4 100644
--- a/mix.lock
+++ b/mix.lock
@@ -8,7 +8,7 @@
   "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"},
   "jason": {:hex, :jason, "1.2.2", "ba43e3f2709fd1aa1dce90aaabfd039d000469c05c56f0b8e31978e03fa39052", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "18a228f5f0058ee183f29f9eae0805c6e59d61c3b006760668d8d18ff0d12179"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
-  "mime": {:hex, :mime, "2.0.1", "0de4c81303fe07806ebc2494d5321ce8fb4df106e34dd5f9d787b637ebadc256", [:mix], [], "hexpm", "7a86b920d2aedce5fb6280ac8261ac1a739ae6c1a1ad38f5eadf910063008942"},
+  "mime": {:hex, :mime, "2.0.2", "0b9e1a4c840eafb68d820b0e2158ef5c49385d17fb36855ac6e7e087d4b1dcc5", [:mix], [], "hexpm", "e6a3f76b4c277739e36c2e21a2c640778ba4c3846189d5ab19f97f126df5f9b7"},
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm", "f278585650aa581986264638ebf698f8bb19df297f66ad91b18910dfc6e19323"},
   "parse_trans": {:hex, :parse_trans, "3.3.1", "16328ab840cc09919bd10dab29e431da3af9e9e7e7e6f0089dd5a2d2820011d8", [:rebar3], [], "hexpm", "07cd9577885f56362d414e8c4c4e6bdf10d43a8767abb92d24cbe8b24c54888b"},
   "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"},
diff --git a/test/privacy_revolver_test.exs b/test/privacy_revolver_test.exs
new file mode 100644
index 0000000..aa8fa79
--- /dev/null
+++ b/test/privacy_revolver_test.exs
@@ -0,0 +1,8 @@
+defmodule PrivacyRevolverTest do
+  use ExUnit.Case
+  doctest PrivacyRevolver
+
+  test "greets the world" do
+    assert PrivacyRevolver.hello() == :world
+  end
+end
diff --git a/test/test_helper.exs b/test/test_helper.exs
new file mode 100644
index 0000000..869559e
--- /dev/null
+++ b/test/test_helper.exs
@@ -0,0 +1 @@
+ExUnit.start()