From c16eaac74f8c209a9a67834665762b22177ddec0 Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sat, 23 Sep 2017 21:44:09 +0300
Subject: [PATCH 01/14] modify the database schema

---
 lib/record.ex | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/record.ex b/lib/record.ex
index 49cc6c4..e6c415a 100644
--- a/lib/record.ex
+++ b/lib/record.ex
@@ -2,8 +2,11 @@ defmodule ElixirDocker.Record do
   use Ecto.Schema
 
   schema "records" do
-    field :count, :integer
+    field :title, :string
+    field :description, :string
+    field :due_date, Ecto.Date
+    field :priority, :string
 
-    timestamps
+    timestamps()
   end
 end

From 4ae913e1a7cc4c598bbca8cc39e182b8cbc0824c Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sat, 23 Sep 2017 21:50:59 +0300
Subject: [PATCH 02/14] define REST endpoints

---
 lib/elixir_docker.ex | 21 ---------------------
 lib/router.ex        | 38 ++++++++++++++++++++++++++------------
 lib/users.ex         | 20 --------------------
 3 files changed, 26 insertions(+), 53 deletions(-)
 delete mode 100644 lib/elixir_docker.ex
 delete mode 100644 lib/users.ex

diff --git a/lib/elixir_docker.ex b/lib/elixir_docker.ex
deleted file mode 100644
index 25f8836..0000000
--- a/lib/elixir_docker.ex
+++ /dev/null
@@ -1,21 +0,0 @@
-defmodule ElixirDocker do
-  @moduledoc """
-  Documentation for ElixirDocker.
-  """
-  
-  use Application
-  alias Users
-  require Logger
-
-  def start(_type, _args) do
-    children = [
-      Supervisor.Spec.worker(ElixirDocker.Repo, []),
-      Supervisor.Spec.worker(ElixirDocker.Router, [])
-    ]
-
-    Logger.info "Started application"
-
-    Supervisor.start_link(children, strategy: :one_for_one,
-                          name: ElixirDocker.Supervisor)
-  end
-end
diff --git a/lib/router.ex b/lib/router.ex
index 0c5adc2..c65710f 100644
--- a/lib/router.ex
+++ b/lib/router.ex
@@ -17,25 +17,39 @@ defmodule ElixirDocker.Router do
     {:ok, _} = Cowboy.http(ElixirDocker.Router, [], port: 8080)
   end
 
-  get "/status" do
-    if System.get_env("MIX_ENV") == "test" do
-      timestamp = Ecto.DateTime.from_date_and_time(%Ecto.Date{year: 2017, month: 09, day: 03},
-                                                 %Ecto.Time{hour: 12, min: 42, sec: 50, usec: 00})
-      last_run = %{inserted_at: timestamp, count: 10}
-    else
-      last_run = Record |> Ecto.Query.last |> Repo.one
-    end
-
-    data = Poison.encode!(%{last_run: last_run.inserted_at,
-                            result_count: last_run.count})
+  get "/v1/tasks" do
+    conn
+    |> put_resp_content_type("application/json")
+    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
+  end
+
+  get "/v1/tasks/{id}" do
+    conn
+    |> put_resp_content_type("application/json")
+    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
+  end
+
+  post "/v1/tasks" do
+    conn
+    |> put_resp_content_type("application/json")
+    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
+  end
+
+  put "/v1/tasks/{id}" do
+    conn
+    |> put_resp_content_type("application/json")
+    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
+  end
 
+  delete "/v1/tasks/{id}" do
     conn
     |> put_resp_content_type("application/json")
-    |> send_resp(200, data)
+    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
   end
 
   match _ do
     conn
+    |> put_resp_content_type("application/json")
     |> send_resp(404, Poison.encode!(%{endpoint: "not implemented!"}))
   end
 end
diff --git a/lib/users.ex b/lib/users.ex
deleted file mode 100644
index a457817..0000000
--- a/lib/users.ex
+++ /dev/null
@@ -1,20 +0,0 @@
-defmodule Users do
-  @moduledoc """
-  Documentation for Users module.
-  """
-
-  @doc """
-  Fetches 10 users from an URL
-  """
-  alias ElixirDocker.Repo
-  alias ElixirDocker.Record
-
-  def count(url) do
-    response = HTTPotion.get url
-
-    case Poison.Parser.parse(response.body) do
-      {:ok, json} -> Repo.insert! %Record{count: length(json)}
-      _           -> IO.puts "something wrong with the answer"
-    end
-  end
-end

From 1fcdab5532e5092eb79350d00afceb6938e1a1ab Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sat, 23 Sep 2017 21:51:19 +0300
Subject: [PATCH 03/14] remove users.ex file

---
 lib/main.ex | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 lib/main.ex

diff --git a/lib/main.ex b/lib/main.ex
new file mode 100644
index 0000000..dcaa73d
--- /dev/null
+++ b/lib/main.ex
@@ -0,0 +1,22 @@
+defmodule ElixirDocker do
+  @moduledoc """
+  Documentation for ElixirDocker.
+  """
+  
+  use Application
+  alias Users
+  require Logger
+  import Supervisor.Spec  
+
+  def start(_type, _args) do
+    children = [
+      worker(ElixirDocker.Repo, []),
+      worker(ElixirDocker.Router, [])
+    ]
+
+    Logger.info "Started application"
+
+    Supervisor.start_link(children, strategy: :one_for_one,
+                          name: ElixirDocker.Supervisor)
+  end
+end

From acaaed26db72be13a9f694b7075cc7610a8deed2 Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sat, 23 Sep 2017 22:01:54 +0300
Subject: [PATCH 04/14] add conditional debuger and logger + route wildcards

---
 lib/router.ex | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/lib/router.ex b/lib/router.ex
index c65710f..67cd890 100644
--- a/lib/router.ex
+++ b/lib/router.ex
@@ -2,10 +2,13 @@ defmodule ElixirDocker.Router do
   use Plug.Router
   import Plug.Conn
 
-  alias ElixirDocker.Record
-  alias ElixirDocker.Repo
   alias Plug.Adapters.Cowboy
 
+  if Mix.env == :dev do
+    use Plug.Debugger
+  end
+
+  plug Plug.Logger
   plug :match
   plug :dispatch
 
@@ -23,7 +26,7 @@ defmodule ElixirDocker.Router do
     |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
   end
 
-  get "/v1/tasks/{id}" do
+  get "/v1/tasks/:id" do
     conn
     |> put_resp_content_type("application/json")
     |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
@@ -35,13 +38,13 @@ defmodule ElixirDocker.Router do
     |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
   end
 
-  put "/v1/tasks/{id}" do
+  put "/v1/tasks/:id" do
     conn
     |> put_resp_content_type("application/json")
     |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
   end
 
-  delete "/v1/tasks/{id}" do
+  delete "/v1/tasks/:id" do
     conn
     |> put_resp_content_type("application/json")
     |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))

From 26f6904ff65e9ce79623ec14604b6baad6ba6488 Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sat, 23 Sep 2017 22:39:42 +0300
Subject: [PATCH 05/14] implement task router as separate module then forward
 to it

---
 lib/router.ex | 34 +++-------------------------------
 1 file changed, 3 insertions(+), 31 deletions(-)

diff --git a/lib/router.ex b/lib/router.ex
index 67cd890..6f58f18 100644
--- a/lib/router.ex
+++ b/lib/router.ex
@@ -6,9 +6,9 @@ defmodule ElixirDocker.Router do
 
   if Mix.env == :dev do
     use Plug.Debugger
+    plug Plug.Logger, log: :debug
   end
 
-  plug Plug.Logger
   plug :match
   plug :dispatch
 
@@ -20,39 +20,11 @@ defmodule ElixirDocker.Router do
     {:ok, _} = Cowboy.http(ElixirDocker.Router, [], port: 8080)
   end
 
-  get "/v1/tasks" do
-    conn
-    |> put_resp_content_type("application/json")
-    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
-  end
-
-  get "/v1/tasks/:id" do
-    conn
-    |> put_resp_content_type("application/json")
-    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
-  end
-
-  post "/v1/tasks" do
-    conn
-    |> put_resp_content_type("application/json")
-    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
-  end
-
-  put "/v1/tasks/:id" do
-    conn
-    |> put_resp_content_type("application/json")
-    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
-  end
-
-  delete "/v1/tasks/:id" do
-    conn
-    |> put_resp_content_type("application/json")
-    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
-  end
+  forward "/v1/tasks", to: TasksRouter
 
   match _ do
     conn
     |> put_resp_content_type("application/json")
     |> send_resp(404, Poison.encode!(%{endpoint: "not implemented!"}))
   end
-end
+end
\ No newline at end of file

From e9a7f8b60cbc9ed6823c97697058ab595a55af0d Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sat, 23 Sep 2017 22:39:55 +0300
Subject: [PATCH 06/14] implement task router as separate module then forward
 to it

---
 lib/task_router.ex | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 lib/task_router.ex

diff --git a/lib/task_router.ex b/lib/task_router.ex
new file mode 100644
index 0000000..bcdfb47
--- /dev/null
+++ b/lib/task_router.ex
@@ -0,0 +1,32 @@
+defmodule TasksRouter do
+  use Plug.Router
+
+  plug :match
+  plug :dispatch
+
+  defp common_behaviour(connection) do
+    connection
+    |> put_resp_content_type("application/json")
+    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
+  end
+
+  post "/" do
+    common_behaviour(conn)
+  end
+
+  get "/" do
+    common_behaviour(conn)
+  end
+
+  get "/:id" do
+    common_behaviour(conn)
+  end
+
+  put "/:id" do
+    common_behaviour(conn)
+  end
+
+  delete "/:id" do
+    common_behaviour(conn)
+  end
+end
\ No newline at end of file

From c01a2bc47bb71ac8a3a388957f39a3d69a429191 Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sat, 23 Sep 2017 22:43:22 +0300
Subject: [PATCH 07/14] small fixes

---
 lib/main.ex        | 1 -
 lib/record.ex      | 2 +-
 lib/router.ex      | 1 +
 lib/task_router.ex | 2 +-
 4 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/main.ex b/lib/main.ex
index dcaa73d..5fe66d9 100644
--- a/lib/main.ex
+++ b/lib/main.ex
@@ -4,7 +4,6 @@ defmodule ElixirDocker do
   """
   
   use Application
-  alias Users
   require Logger
   import Supervisor.Spec  
 
diff --git a/lib/record.ex b/lib/record.ex
index e6c415a..631b9c8 100644
--- a/lib/record.ex
+++ b/lib/record.ex
@@ -1,7 +1,7 @@
 defmodule ElixirDocker.Record do
   use Ecto.Schema
 
-  schema "records" do
+  schema "tasks" do
     field :title, :string
     field :description, :string
     field :due_date, Ecto.Date
diff --git a/lib/router.ex b/lib/router.ex
index 6f58f18..52d0de7 100644
--- a/lib/router.ex
+++ b/lib/router.ex
@@ -3,6 +3,7 @@ defmodule ElixirDocker.Router do
   import Plug.Conn
 
   alias Plug.Adapters.Cowboy
+  alias ElixirDocker.Router.TasksRouter
 
   if Mix.env == :dev do
     use Plug.Debugger
diff --git a/lib/task_router.ex b/lib/task_router.ex
index bcdfb47..8ff68cc 100644
--- a/lib/task_router.ex
+++ b/lib/task_router.ex
@@ -1,4 +1,4 @@
-defmodule TasksRouter do
+defmodule ElixirDocker.Router.TasksRouter do
   use Plug.Router
 
   plug :match

From a0df63d8ce34403316736df73600d46e31ccf49f Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sat, 23 Sep 2017 22:55:26 +0300
Subject: [PATCH 08/14] migration: create table tasks

---
 lib/record.ex                                    |  2 +-
 lib/task_router.ex                               |  3 +++
 mix.exs                                          |  4 ++--
 .../migrations/20170923195206_change_schema.exs  | 16 ++++++++++++++++
 4 files changed, 22 insertions(+), 3 deletions(-)
 create mode 100644 priv/repo/migrations/20170923195206_change_schema.exs

diff --git a/lib/record.ex b/lib/record.ex
index 631b9c8..23022b8 100644
--- a/lib/record.ex
+++ b/lib/record.ex
@@ -4,7 +4,7 @@ defmodule ElixirDocker.Record do
   schema "tasks" do
     field :title, :string
     field :description, :string
-    field :due_date, Ecto.Date
+    field :due_date, :date
     field :priority, :string
 
     timestamps()
diff --git a/lib/task_router.ex b/lib/task_router.ex
index 8ff68cc..c358070 100644
--- a/lib/task_router.ex
+++ b/lib/task_router.ex
@@ -2,6 +2,9 @@ defmodule ElixirDocker.Router.TasksRouter do
   use Plug.Router
 
   plug :match
+  plug Plug.Parsers, parsers: [:json],
+                     pass:  ["application/json"],
+                     json_decoder: Poison
   plug :dispatch
 
   defp common_behaviour(connection) do
diff --git a/mix.exs b/mix.exs
index 0d0965c..b2c6c99 100644
--- a/mix.exs
+++ b/mix.exs
@@ -26,9 +26,9 @@ defmodule ElixirDocker.Mixfile do
       {:cowboy, "~> 1.1.2"},
       {:plug, "~> 1.3.4"},
       {:postgrex, ">= 0.0.0"},
-      {:ecto, "~> 2.0.0-beta"},
+      {:ecto, "~> 2.1.0"},
       {:httpotion, "~> 2.1.0"},
-      {:poison, "~> 1.5"},
+      {:poison, "~> 2.2"},
       {:ibrowse, github: "cmullaparthi/ibrowse", tag: "v4.1.2"},
       # for dev and test purpose only
       {:excoveralls, github: "parroty/excoveralls", only: :test},
diff --git a/priv/repo/migrations/20170923195206_change_schema.exs b/priv/repo/migrations/20170923195206_change_schema.exs
new file mode 100644
index 0000000..8dcbbd4
--- /dev/null
+++ b/priv/repo/migrations/20170923195206_change_schema.exs
@@ -0,0 +1,16 @@
+defmodule ElixirDocker.Repo.Migrations.ChangeSchema do
+  use Ecto.Migration
+
+  def change do
+    drop table(:records)
+    
+    create table(:tasks) do
+      add :title, :string
+      add :description, :string
+      add :due_date, :date
+      add :priority, :string
+  
+      timestamps
+    end
+  end
+end

From cb2e52161654f24ecd0f31a7e6c46cc13d07ca7a Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sun, 24 Sep 2017 12:50:15 +0300
Subject: [PATCH 09/14] implement dumb logic for all endpoints + add brief
 documentation to modules

---
 lib/main.ex        |  6 +++---
 lib/record.ex      |  4 ++++
 lib/repo.ex        |  4 ++++
 lib/router.ex      |  6 +++++-
 lib/task_router.ex | 32 ++++++++++++++++++++++++--------
 5 files changed, 40 insertions(+), 12 deletions(-)

diff --git a/lib/main.ex b/lib/main.ex
index 5fe66d9..65927d5 100644
--- a/lib/main.ex
+++ b/lib/main.ex
@@ -1,11 +1,11 @@
 defmodule ElixirDocker do
   @moduledoc """
-  Documentation for ElixirDocker.
+  Entry point and handler for ElixirDocker app.
   """
-  
+
   use Application
   require Logger
-  import Supervisor.Spec  
+  import Supervisor.Spec
 
   def start(_type, _args) do
     children = [
diff --git a/lib/record.ex b/lib/record.ex
index 23022b8..29e4224 100644
--- a/lib/record.ex
+++ b/lib/record.ex
@@ -1,4 +1,8 @@
 defmodule ElixirDocker.Record do
+  @moduledoc """
+  Describes the 'tasks' table in the Database.
+  """
+
   use Ecto.Schema
 
   schema "tasks" do
diff --git a/lib/repo.ex b/lib/repo.ex
index 4f470ce..1d2d5d5 100644
--- a/lib/repo.ex
+++ b/lib/repo.ex
@@ -1,3 +1,7 @@
 defmodule ElixirDocker.Repo do
+  @moduledoc """
+  I think it binds the Ecto Repository to the app.
+  """
+
   use Ecto.Repo, otp_app: :elixir_docker
 end
diff --git a/lib/router.ex b/lib/router.ex
index 52d0de7..b00c962 100644
--- a/lib/router.ex
+++ b/lib/router.ex
@@ -1,4 +1,8 @@
 defmodule ElixirDocker.Router do
+  @moduledoc """
+  Top level router of the TODO API.
+  """
+
   use Plug.Router
   import Plug.Conn
 
@@ -28,4 +32,4 @@ defmodule ElixirDocker.Router do
     |> put_resp_content_type("application/json")
     |> send_resp(404, Poison.encode!(%{endpoint: "not implemented!"}))
   end
-end
\ No newline at end of file
+end
diff --git a/lib/task_router.ex b/lib/task_router.ex
index c358070..3b7d239 100644
--- a/lib/task_router.ex
+++ b/lib/task_router.ex
@@ -1,5 +1,11 @@
 defmodule ElixirDocker.Router.TasksRouter do
+  @moduledoc """
+  Special purpose router to handle
+  CRUD operations over 'tasks' in the TODO API.
+  """
+
   use Plug.Router
+  require Logger
 
   plug :match
   plug Plug.Parsers, parsers: [:json],
@@ -7,29 +13,39 @@ defmodule ElixirDocker.Router.TasksRouter do
                      json_decoder: Poison
   plug :dispatch
 
-  defp common_behaviour(connection) do
+  defp common_behaviour(connection, data) do
     connection
     |> put_resp_content_type("application/json")
-    |> send_resp(200, Poison.encode!(%{data: "Nothing to show"}))
+    |> send_resp(200, Poison.encode!(data))
   end
 
   post "/" do
-    common_behaviour(conn)
+    conn
+    |> common_behaviour(%{info: "Welcome from post",
+                          data: conn.body_params})
   end
 
   get "/" do
-    common_behaviour(conn)
+    conn
+    |> common_behaviour(%{info: "Welcome from listing",
+                          data: [%{no: "posts"}, %{no: "posts"}]})
   end
 
   get "/:id" do
-    common_behaviour(conn)
+    conn
+    |> common_behaviour(%{info: "Welcome from details",
+                          data: %{no: "info on #{id}"}})
   end
 
   put "/:id" do
-    common_behaviour(conn)
+    conn
+    |> common_behaviour(%{info: "Welcome from update",
+                          data: %{no: "way to update #{id}"}})
   end
 
   delete "/:id" do
-    common_behaviour(conn)
+    conn
+    |> common_behaviour(%{info: "Welcome from delete",
+                          data: %{no: "way to delete #{id}"}})
   end
-end
\ No newline at end of file
+end

From d02c6ecb670c9391e708038f4ca828a88ab2a97e Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sun, 24 Sep 2017 15:09:53 +0300
Subject: [PATCH 10/14] implement POST endpoint

---
 lib/task_router.ex | 43 +++++++++++++++++++++++++++++++++----------
 1 file changed, 33 insertions(+), 10 deletions(-)

diff --git a/lib/task_router.ex b/lib/task_router.ex
index 3b7d239..48d5d0c 100644
--- a/lib/task_router.ex
+++ b/lib/task_router.ex
@@ -5,7 +5,9 @@ defmodule ElixirDocker.Router.TasksRouter do
   """
 
   use Plug.Router
-  require Logger
+
+  alias ElixirDocker.Record
+  alias ElixirDocker.Repo
 
   plug :match
   plug Plug.Parsers, parsers: [:json],
@@ -13,39 +15,60 @@ defmodule ElixirDocker.Router.TasksRouter do
                      json_decoder: Poison
   plug :dispatch
 
-  defp common_behaviour(connection, data) do
+  defp response(connection, code, data) do
     connection
     |> put_resp_content_type("application/json")
-    |> send_resp(200, Poison.encode!(data))
+    |> send_resp(code, Poison.encode!(data))
+  end
+
+  defp valid_data?(data) do
+    ["title", "description", "due_date", "priority"]
+    |> Enum.map(fn k ->
+      data
+      |> Map.has_key?(k)
+    end)
+    |> Enum.all?
   end
 
   post "/" do
-    conn
-    |> common_behaviour(%{info: "Welcome from post",
-                          data: conn.body_params})
+    data = conn.body_params
+
+    if (valid_data?(data)) do
+
+      record = %Record{title: data["title"],
+                       description: data["description"],
+                       due_date: Date.from_iso8601!(data["due_date"]),
+                       priority: data["priority"]}
+
+      resp = Repo.insert! record
+
+      conn |> response(201, %{info: "Task created", task_id: resp.id})
+    else
+      conn |> response(400, %{info: "Invalid body"})
+    end
   end
 
   get "/" do
     conn
-    |> common_behaviour(%{info: "Welcome from listing",
+    |> response(200, %{info: "Welcome from listing",
                           data: [%{no: "posts"}, %{no: "posts"}]})
   end
 
   get "/:id" do
     conn
-    |> common_behaviour(%{info: "Welcome from details",
+    |> response(200, %{info: "Welcome from details",
                           data: %{no: "info on #{id}"}})
   end
 
   put "/:id" do
     conn
-    |> common_behaviour(%{info: "Welcome from update",
+    |> response(200, %{info: "Welcome from update",
                           data: %{no: "way to update #{id}"}})
   end
 
   delete "/:id" do
     conn
-    |> common_behaviour(%{info: "Welcome from delete",
+    |> response(200, %{info: "Welcome from delete",
                           data: %{no: "way to delete #{id}"}})
   end
 end

From 8f6cee6f45bf28d0224b76ab7d0ef86f8fea704f Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Sun, 24 Sep 2017 16:25:45 +0300
Subject: [PATCH 11/14] implement logic fot GET endpoints

---
 lib/task_router.ex | 33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/lib/task_router.ex b/lib/task_router.ex
index 48d5d0c..f138a81 100644
--- a/lib/task_router.ex
+++ b/lib/task_router.ex
@@ -5,6 +5,7 @@ defmodule ElixirDocker.Router.TasksRouter do
   """
 
   use Plug.Router
+  import Ecto.Query
 
   alias ElixirDocker.Record
   alias ElixirDocker.Repo
@@ -30,6 +31,17 @@ defmodule ElixirDocker.Router.TasksRouter do
     |> Enum.all?
   end
 
+  defp stringify_dates(raw_data) do
+    raw_data |> Enum.map(fn record ->
+      {{y, m, d}, _} = record.inserted_at
+      {due_y, due_m, due_d} = record.due_date
+
+      record
+      |> Map.put(:inserted_at, "#{y}-#{m}-#{d}")
+      |> Map.put(:due_date, "#{due_y}-#{due_m}-#{due_d}")
+    end)
+  end
+
   post "/" do
     data = conn.body_params
 
@@ -49,15 +61,24 @@ defmodule ElixirDocker.Router.TasksRouter do
   end
 
   get "/" do
-    conn
-    |> response(200, %{info: "Welcome from listing",
-                          data: [%{no: "posts"}, %{no: "posts"}]})
+    data = Repo.all(from t in "tasks",
+                    select: [:title, :description,
+                            :due_date, :priority,
+                            :inserted_at, :id])
+
+    conn |> response(200, %{info: "The available tasks",
+                            data: stringify_dates(data)})
   end
 
   get "/:id" do
-    conn
-    |> response(200, %{info: "Welcome from details",
-                          data: %{no: "info on #{id}"}})
+    data = Repo.all(from t in "tasks",
+                    where: t.id == ^String.to_integer(id),
+                    select: [:title, :description,
+                             :due_date, :priority,
+                             :inserted_at])
+
+    conn |> response(200, %{info: "Information about tasks ##{id}",
+                            data: stringify_dates(data)})
   end
 
   put "/:id" do

From 11b00989dfaa42538e7872718c895c4d0c4b50c8 Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Mon, 25 Sep 2017 11:30:10 +0300
Subject: [PATCH 12/14] add corect return codes for existing REST methods +
 implement DELETE

---
 lib/task_router.ex | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

diff --git a/lib/task_router.ex b/lib/task_router.ex
index f138a81..cdbd9c6 100644
--- a/lib/task_router.ex
+++ b/lib/task_router.ex
@@ -60,6 +60,10 @@ defmodule ElixirDocker.Router.TasksRouter do
     end
   end
 
+  post "/:id" do
+    conn |> response(405, %{info: "Impossible to update tasks via POST, use PUT instead"})
+  end
+
   get "/" do
     data = Repo.all(from t in "tasks",
                     select: [:title, :description,
@@ -77,19 +81,34 @@ defmodule ElixirDocker.Router.TasksRouter do
                              :due_date, :priority,
                              :inserted_at])
 
-    conn |> response(200, %{info: "Information about tasks ##{id}",
-                            data: stringify_dates(data)})
+    case (data) do
+      [] -> conn |> response(404, %{info: "No information about tasks ##{id}"})
+      _  -> conn |> response(200, %{info: "Information about tasks ##{id}",
+                                    data: stringify_dates(data)})
+    end
+  end
+
+  put "/" do
+    conn |> response(405, %{info: "Impossible to update all tasks"})
   end
 
   put "/:id" do
     conn
     |> response(200, %{info: "Welcome from update",
-                          data: %{no: "way to update #{id}"}})
+                       data: %{no: "way to update #{id}"}})
+  end
+
+  delete "/" do
+    conn |> response(405, %{info: "Impossible to delete all tasks"})
   end
 
   delete "/:id" do
-    conn
-    |> response(200, %{info: "Welcome from delete",
-                          data: %{no: "way to delete #{id}"}})
+    stats = Ecto.Adapters.SQL.query(Repo,
+      "DELETE FROM tasks WHERE id = $1", [String.to_integer id])
+
+    case (stats) do
+      {:ok, _}    -> conn |> response(200, %{info: "Task ##{id} deleted"})
+      {:error, _} -> conn |> response(700, %{info: "Task ##{id} not deleted"})
+    end
   end
 end

From 46a1e202b701c61bdb9b5af779cd1e08e31905cb Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Mon, 25 Sep 2017 11:31:38 +0300
Subject: [PATCH 13/14] add corect return codes for existing REST methods +
 implement DELETE

---
 lib/task_router.ex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/task_router.ex b/lib/task_router.ex
index cdbd9c6..3eed7ec 100644
--- a/lib/task_router.ex
+++ b/lib/task_router.ex
@@ -93,6 +93,7 @@ defmodule ElixirDocker.Router.TasksRouter do
   end
 
   put "/:id" do
+    IO.puts inspect conn.body_params
     conn
     |> response(200, %{info: "Welcome from update",
                        data: %{no: "way to update #{id}"}})

From b57f3e164567a1c3245b1a344ad47cd719a21d1c Mon Sep 17 00:00:00 2001
From: Alexandru Burlacu <alexburlacu96@gmail.com>
Date: Mon, 25 Sep 2017 12:07:29 +0300
Subject: [PATCH 14/14] implement PUT endpoint - it's quite awful tho

---
 lib/task_router.ex | 43 ++++++++++++++++++++++++++-----------------
 1 file changed, 26 insertions(+), 17 deletions(-)

diff --git a/lib/task_router.ex b/lib/task_router.ex
index 3eed7ec..0ebcf75 100644
--- a/lib/task_router.ex
+++ b/lib/task_router.ex
@@ -45,18 +45,16 @@ defmodule ElixirDocker.Router.TasksRouter do
   post "/" do
     data = conn.body_params
 
-    if (valid_data?(data)) do
+    case (valid_data?(data)) do
+      true  -> record = %Record{title: data["title"],
+                                description: data["description"],
+                                due_date: Date.from_iso8601!(data["due_date"]),
+                                priority: data["priority"]}
 
-      record = %Record{title: data["title"],
-                       description: data["description"],
-                       due_date: Date.from_iso8601!(data["due_date"]),
-                       priority: data["priority"]}
+               resp = Repo.insert! record
 
-      resp = Repo.insert! record
-
-      conn |> response(201, %{info: "Task created", task_id: resp.id})
-    else
-      conn |> response(400, %{info: "Invalid body"})
+               conn |> response(201, %{info: "Task created", task_id: resp.id})
+      false -> conn |> response(400, %{info: "Invalid body"})
     end
   end
 
@@ -69,9 +67,11 @@ defmodule ElixirDocker.Router.TasksRouter do
                     select: [:title, :description,
                             :due_date, :priority,
                             :inserted_at, :id])
-
-    conn |> response(200, %{info: "The available tasks",
-                            data: stringify_dates(data)})
+    case (data) do
+      [] -> conn |> response(404, %{info: "No available tasks"})
+      _  -> conn |> response(200, %{info: "The available tasks",
+                                    data: stringify_dates(data)})
+    end
   end
 
   get "/:id" do
@@ -93,10 +93,19 @@ defmodule ElixirDocker.Router.TasksRouter do
   end
 
   put "/:id" do
-    IO.puts inspect conn.body_params
-    conn
-    |> response(200, %{info: "Welcome from update",
-                       data: %{no: "way to update #{id}"}})
+    data = conn.body_params
+
+    case (valid_data?(data)) do
+      true  -> resp = from(t in "tasks", where: t.id == ^String.to_integer(id),
+                           update: [set: [title: ^data["title"],
+                                          description: ^data["description"],
+                                          due_date: ^Date.from_iso8601!(data["due_date"]),
+                                          priority: ^data["priority"]]])
+                      |> Repo.update_all([])
+
+               conn |> response(200, %{info: "Task ##{id} updated"})
+      false -> conn |> response(400, %{info: "Invalid body"})
+    end
   end
 
   delete "/" do