adds rest api connector

- routing setup with path to message_controller
- messages api to database updated to function
  similar to a stack system (push, pop, peek, ..)
- rest calls the same as database calls
- setup default controller showing text message
- parsing database output with Jason to client
- adds curl examples

README.md

@@ -26,6 +26,6 @@ Ready to run in production? Please [check our deployment guides](https://hexdocs
 ## TODOs
 
 [x] finish api calls in lib/bump/messages.ex
-[]
+[x] add rest api and connect to database api
 
 

curl.sh

@@ -0,0 +1,5 @@
+curl -X POST http://localhost:4000/api/push -H "Content-Type: application/json" -d '{"sender": "raphael", "message": "Hello"}'
+# curl -X POST http://localhost:4000/api/peak -H "Content-Type: application/json" -d '{"sender": "raphael"}'
+# curl -X POST http://localhost:4000/api/pop -H "Content-Type: application/json" -d '{"sender": "raphael"}'
+# curl -X POST http://localhost:4000/api/list -H "Content-Type: application/json" -d '{"sender": "raphael", "minutes": "40"}'
+# curl -X POST http://localhost:4000/api/clear -H "Content-Type: application/json" -d '{"sender": "raphael"}'

lib/bump/messages.ex

@@ -3,16 +3,34 @@ defmodule Bump.Messages do
   alias Bump.Messages.Message
   import Ecto.Query
 
-  def get_newest_message(sender) do
+  def pop(sender) do
     query = from m in "messages",
             where: m.sender == ^sender,
             order_by: [desc: m.timestamp],
             limit: 1,
-            select: m.data
+            select: %{id: m.id, data: m.data, timestamp: m.timestamp}
+
+    res = Repo.one(query)
+
+    if not is_nil(res) do
+      Repo.delete_all(from m in "messages", where: m.id == ^res.id)
+    %{data: res.data, timestamp: res.timestamp}
+    else
+      nil
+    end
+
+  end
+
+  def peak(sender) do
+    query = from m in "messages",
+            where: m.sender == ^sender,
+            order_by: [desc: m.timestamp],
+            limit: 1,
+            select: %{data: m.data, timestamp: m.timestamp}
     Repo.one(query)
   end
 
-  def get_all_messages_since(sender, minutes) do
+  def list(sender, minutes) do
 
     ago = DateTime.utc_now 
           |> Timex.shift(minutes: -minutes) 
@@ -21,21 +39,20 @@ defmodule Bump.Messages do
     query = from m in "messages",
             where: m.sender == ^sender and
             m.timestamp >= ^ago,
-      select: m.data
+            select: %{data: m.data, timestamp: m.timestamp}
+
     Repo.all(query)
   end
 
-  def remove_sender(sender) do
+  def clear(sender) do
     query = from m in "messages",
-      where: m.sender == ^sender,
-      select: m.id
+            where: m.sender == ^sender
+
     Repo.delete_all(query)
   end
 
-  def add_message(sender, message) do
-    time = 
-      DateTime.utc_now 
-      |> DateTime.truncate(:second)
+  def push(sender, message) do
+    time = DateTime.utc_now |> DateTime.truncate(:second)
 
     Repo.insert(%Message{sender: sender, data: message, timestamp: time})
 

lib/bump_web/controllers/default_controller.ex

@@ -1,7 +1,7 @@
-defmodule BumpWeb.PageController do
+defmodule BumpWeb.DefaultController do
   use BumpWeb, :controller
 
   def index(conn, _params) do
-    render(conn, "index.html")
+    text conn, "Bump API"
   end
 end

lib/bump_web/controllers/message_controller.ex

@@ -0,0 +1,37 @@
+defmodule BumpWeb.MessageController do
+  use BumpWeb, :controller
+
+  alias Bump.Messages
+
+  def index(conn, _params) do
+    text conn, "Bump Api"
+  end
+
+  def list(conn, %{"sender" => sender, "minutes" => minutes}) do
+    list = Messages.list(sender, String.to_integer(minutes))
+    text conn, Jason.encode!(list)
+
+  end
+
+  def clear(conn, %{"sender" => sender}) do
+    Messages.clear(sender)
+    text conn, "OK"
+
+  end
+
+  def push(conn, %{"sender" => sender, "message" => message}) do
+    Messages.push(sender, message)
+    text conn, "OK"
+
+  end
+
+  def pop(conn, %{"sender" => sender}) do
+    message = Messages.pop(sender)
+    text conn, Jason.encode!(message)
+  end
+
+  def peak(conn, %{"sender" => sender}) do
+    message = Messages.peak(sender)
+    text conn, Jason.encode!(message)
+  end
+end

lib/bump_web/router.ex

@@ -1,25 +1,28 @@
 defmodule BumpWeb.Router do
   use BumpWeb, :router
 
-  pipeline :browser do
-    plug :accepts, ["html"]
-    plug :fetch_session
-    plug :fetch_live_flash
-    plug :put_root_layout, {BumpWeb.LayoutView, :root}
-    plug :protect_from_forgery
-    plug :put_secure_browser_headers
-  end
-
   pipeline :api do
     plug :accepts, ["json"]
   end
 
-  scope "/", BumpWeb do
-    pipe_through :browser
-
-    get "/", PageController, :index
+  scope "/api", BumpWeb do
+    pipe_through :api
+    post "/push", MessageController, :push
+    post "/peak", MessageController, :peak
+    post "/pop", MessageController, :pop
+    post "/list", MessageController, :list
+    post "/clear", MessageController, :clear
   end
 
+
+  pipeline :browser do
+    plug :accepts, ["html"]
+  end
+
+  scope "/", BumpWeb do
+    pipe_through :browser
+    get "/", DefaultController, :index
+  end
   # Other scopes may use custom stacks.
   # scope "/api", BumpWeb do
   #   pipe_through :api
@@ -33,23 +36,5 @@ defmodule BumpWeb.Router do
   # you can use Plug.BasicAuth to set up some basic authentication
   # as long as you are also using SSL (which you should anyway).
   if Mix.env() in [:dev, :test] do
-    import Phoenix.LiveDashboard.Router
-
-    scope "/" do
-      pipe_through :browser
-      live_dashboard "/dashboard", metrics: BumpWeb.Telemetry
-    end
-  end
-
-  # Enables the Swoosh mailbox preview in development.
-  #
-  # Note that preview only shows emails that were sent by the same
-  # node running the Phoenix server.
-  if Mix.env() == :dev do
-    scope "/dev" do
-      pipe_through :browser
-
-      forward "/mailbox", Plug.Swoosh.MailboxPreview
-    end
   end
 end