From b7824c4abcf4401f235d7c69d5adb4ac3c0be7f9 Mon Sep 17 00:00:00 2001
From: "Liam P. White" <byteslice@airmail.cc>
Date: Wed, 28 Aug 2019 12:48:39 -0400
Subject: [PATCH] context: conversations

---
 lib/philomena/conversations.ex              | 104 ++++++++++++++++++++
 lib/philomena/conversations/conversation.ex |  26 +++++
 test/philomena/conversations_test.exs       |  62 ++++++++++++
 3 files changed, 192 insertions(+)
 create mode 100644 lib/philomena/conversations.ex
 create mode 100644 lib/philomena/conversations/conversation.ex
 create mode 100644 test/philomena/conversations_test.exs

diff --git a/lib/philomena/conversations.ex b/lib/philomena/conversations.ex
new file mode 100644
index 00000000..51ce0dc8
--- /dev/null
+++ b/lib/philomena/conversations.ex
@@ -0,0 +1,104 @@
+defmodule Philomena.Conversations do
+  @moduledoc """
+  The Conversations context.
+  """
+
+  import Ecto.Query, warn: false
+  alias Philomena.Repo
+
+  alias Philomena.Conversations.Conversation
+
+  @doc """
+  Returns the list of conversations.
+
+  ## Examples
+
+      iex> list_conversations()
+      [%Conversation{}, ...]
+
+  """
+  def list_conversations do
+    Repo.all(Conversation)
+  end
+
+  @doc """
+  Gets a single conversation.
+
+  Raises `Ecto.NoResultsError` if the Conversation does not exist.
+
+  ## Examples
+
+      iex> get_conversation!(123)
+      %Conversation{}
+
+      iex> get_conversation!(456)
+      ** (Ecto.NoResultsError)
+
+  """
+  def get_conversation!(id), do: Repo.get!(Conversation, id)
+
+  @doc """
+  Creates a conversation.
+
+  ## Examples
+
+      iex> create_conversation(%{field: value})
+      {:ok, %Conversation{}}
+
+      iex> create_conversation(%{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def create_conversation(attrs \\ %{}) do
+    %Conversation{}
+    |> Conversation.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  @doc """
+  Updates a conversation.
+
+  ## Examples
+
+      iex> update_conversation(conversation, %{field: new_value})
+      {:ok, %Conversation{}}
+
+      iex> update_conversation(conversation, %{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def update_conversation(%Conversation{} = conversation, attrs) do
+    conversation
+    |> Conversation.changeset(attrs)
+    |> Repo.update()
+  end
+
+  @doc """
+  Deletes a Conversation.
+
+  ## Examples
+
+      iex> delete_conversation(conversation)
+      {:ok, %Conversation{}}
+
+      iex> delete_conversation(conversation)
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def delete_conversation(%Conversation{} = conversation) do
+    Repo.delete(conversation)
+  end
+
+  @doc """
+  Returns an `%Ecto.Changeset{}` for tracking conversation changes.
+
+  ## Examples
+
+      iex> change_conversation(conversation)
+      %Ecto.Changeset{source: %Conversation{}}
+
+  """
+  def change_conversation(%Conversation{} = conversation) do
+    Conversation.changeset(conversation, %{})
+  end
+end
diff --git a/lib/philomena/conversations/conversation.ex b/lib/philomena/conversations/conversation.ex
new file mode 100644
index 00000000..7db30650
--- /dev/null
+++ b/lib/philomena/conversations/conversation.ex
@@ -0,0 +1,26 @@
+defmodule Philomena.Conversations.Conversation do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  schema "conversations" do
+    belongs_to :from, Philomena.Users.User
+    belongs_to :to, Philomena.Users.User
+
+    field :title, :string
+    field :to_read, :boolean, default: false
+    field :from_read, :boolean, default: true
+    field :to_hidden, :boolean, default: false
+    field :from_hidden, :boolean, default: false
+    field :slug, :string
+    field :last_message_at, :naive_datetime
+
+    timestamps(inserted_at: :created_at)
+  end
+
+  @doc false
+  def changeset(conversation, attrs) do
+    conversation
+    |> cast(attrs, [])
+    |> validate_required([])
+  end
+end
diff --git a/test/philomena/conversations_test.exs b/test/philomena/conversations_test.exs
new file mode 100644
index 00000000..94357e2a
--- /dev/null
+++ b/test/philomena/conversations_test.exs
@@ -0,0 +1,62 @@
+defmodule Philomena.ConversationsTest do
+  use Philomena.DataCase
+
+  alias Philomena.Conversations
+
+  describe "conversations" do
+    alias Philomena.Conversations.Conversation
+
+    @valid_attrs %{}
+    @update_attrs %{}
+    @invalid_attrs %{}
+
+    def conversation_fixture(attrs \\ %{}) do
+      {:ok, conversation} =
+        attrs
+        |> Enum.into(@valid_attrs)
+        |> Conversations.create_conversation()
+
+      conversation
+    end
+
+    test "list_conversations/0 returns all conversations" do
+      conversation = conversation_fixture()
+      assert Conversations.list_conversations() == [conversation]
+    end
+
+    test "get_conversation!/1 returns the conversation with given id" do
+      conversation = conversation_fixture()
+      assert Conversations.get_conversation!(conversation.id) == conversation
+    end
+
+    test "create_conversation/1 with valid data creates a conversation" do
+      assert {:ok, %Conversation{} = conversation} = Conversations.create_conversation(@valid_attrs)
+    end
+
+    test "create_conversation/1 with invalid data returns error changeset" do
+      assert {:error, %Ecto.Changeset{}} = Conversations.create_conversation(@invalid_attrs)
+    end
+
+    test "update_conversation/2 with valid data updates the conversation" do
+      conversation = conversation_fixture()
+      assert {:ok, %Conversation{} = conversation} = Conversations.update_conversation(conversation, @update_attrs)
+    end
+
+    test "update_conversation/2 with invalid data returns error changeset" do
+      conversation = conversation_fixture()
+      assert {:error, %Ecto.Changeset{}} = Conversations.update_conversation(conversation, @invalid_attrs)
+      assert conversation == Conversations.get_conversation!(conversation.id)
+    end
+
+    test "delete_conversation/1 deletes the conversation" do
+      conversation = conversation_fixture()
+      assert {:ok, %Conversation{}} = Conversations.delete_conversation(conversation)
+      assert_raise Ecto.NoResultsError, fn -> Conversations.get_conversation!(conversation.id) end
+    end
+
+    test "change_conversation/1 returns a conversation changeset" do
+      conversation = conversation_fixture()
+      assert %Ecto.Changeset{} = Conversations.change_conversation(conversation)
+    end
+  end
+end