add notes

lib/memex/notes.ex

@@ -0,0 +1,104 @@
+defmodule Memex.Notes do
+  @moduledoc """
+  The Notes context.
+  """
+
+  import Ecto.Query, warn: false
+  alias Memex.Repo
+
+  alias Memex.Notes.Note
+
+  @doc """
+  Returns the list of notes.
+
+  ## Examples
+
+      iex> list_notes()
+      [%Note{}, ...]
+
+  """
+  def list_notes do
+    Repo.all(Note)
+  end
+
+  @doc """
+  Gets a single note.
+
+  Raises `Ecto.NoResultsError` if the Note does not exist.
+
+  ## Examples
+
+      iex> get_note!(123)
+      %Note{}
+
+      iex> get_note!(456)
+      ** (Ecto.NoResultsError)
+
+  """
+  def get_note!(id), do: Repo.get!(Note, id)
+
+  @doc """
+  Creates a note.
+
+  ## Examples
+
+      iex> create_note(%{field: value})
+      {:ok, %Note{}}
+
+      iex> create_note(%{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def create_note(attrs \\ %{}) do
+    %Note{}
+    |> Note.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  @doc """
+  Updates a note.
+
+  ## Examples
+
+      iex> update_note(note, %{field: new_value})
+      {:ok, %Note{}}
+
+      iex> update_note(note, %{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def update_note(%Note{} = note, attrs) do
+    note
+    |> Note.changeset(attrs)
+    |> Repo.update()
+  end
+
+  @doc """
+  Deletes a note.
+
+  ## Examples
+
+      iex> delete_note(note)
+      {:ok, %Note{}}
+
+      iex> delete_note(note)
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def delete_note(%Note{} = note) do
+    Repo.delete(note)
+  end
+
+  @doc """
+  Returns an `%Ecto.Changeset{}` for tracking note changes.
+
+  ## Examples
+
+      iex> change_note(note)
+      %Ecto.Changeset{data: %Note{}}
+
+  """
+  def change_note(%Note{} = note, attrs \\ %{}) do
+    Note.changeset(note, attrs)
+  end
+end

lib/memex/notes/note.ex

@@ -0,0 +1,22 @@
+defmodule Memex.Notes.Note do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  @primary_key {:id, :binary_id, autogenerate: true}
+  @foreign_key_type :binary_id
+  schema "notes" do
+    field :content, :string
+    field :tag, {:array, :string}
+    field :title, :string
+    field :visibility, Ecto.Enum, values: [:public, :private, :unlisted]
+
+    timestamps()
+  end
+
+  @doc false
+  def changeset(note, attrs) do
+    note
+    |> cast(attrs, [:title, :content, :tag, :visibility])
+    |> validate_required([:title, :content, :tag, :visibility])
+  end
+end

lib/memex_web.ex

@@ -92,6 +92,7 @@ defmodule MemexWeb do
 
       # Import LiveView and .heex helpers (live_render, live_patch, <.form>, etc)
       import Phoenix.LiveView.Helpers
+      import MemexWeb.LiveHelpers
 
       # Import basic rendering functionality (render, render_layout, etc)
       import Phoenix.View

lib/memex_web/live/note_live/form_component.ex

@@ -0,0 +1,55 @@
+defmodule MemexWeb.NoteLive.FormComponent do
+  use MemexWeb, :live_component
+
+  alias Memex.Notes
+
+  @impl true
+  def update(%{note: note} = assigns, socket) do
+    changeset = Notes.change_note(note)
+
+    {:ok,
+     socket
+     |> assign(assigns)
+     |> assign(:changeset, changeset)}
+  end
+
+  @impl true
+  def handle_event("validate", %{"note" => note_params}, socket) do
+    changeset =
+      socket.assigns.note
+      |> Notes.change_note(note_params)
+      |> Map.put(:action, :validate)
+
+    {:noreply, assign(socket, :changeset, changeset)}
+  end
+
+  def handle_event("save", %{"note" => note_params}, socket) do
+    save_note(socket, socket.assigns.action, note_params)
+  end
+
+  defp save_note(socket, :edit, note_params) do
+    case Notes.update_note(socket.assigns.note, note_params) do
+      {:ok, _note} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "Note updated successfully")
+         |> push_redirect(to: socket.assigns.return_to)}
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        {:noreply, assign(socket, :changeset, changeset)}
+    end
+  end
+
+  defp save_note(socket, :new, note_params) do
+    case Notes.create_note(note_params) do
+      {:ok, _note} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "Note created successfully")
+         |> push_redirect(to: socket.assigns.return_to)}
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        {:noreply, assign(socket, changeset: changeset)}
+    end
+  end
+end

lib/memex_web/live/note_live/form_component.html.heex

@@ -0,0 +1,32 @@
+<div>
+  <h2><%= @title %></h2>
+
+  <.form
+    let={f}
+    for={@changeset}
+    id="note-form"
+    phx-target={@myself}
+    phx-change="validate"
+    phx-submit="save">
+  
+    <%= label f, :title %>
+    <%= text_input f, :title %>
+    <%= error_tag f, :title %>
+  
+    <%= label f, :content %>
+    <%= textarea f, :content %>
+    <%= error_tag f, :content %>
+  
+    <%= label f, :tag %>
+    <%= multiple_select f, :tag, ["Option 1": "option1", "Option 2": "option2"] %>
+    <%= error_tag f, :tag %>
+  
+    <%= label f, :visibility %>
+    <%= select f, :visibility, Ecto.Enum.values(Memex.Notes.Note, :visibility), prompt: "Choose a value" %>
+    <%= error_tag f, :visibility %>
+  
+    <div>
+      <%= submit "Save", phx_disable_with: "Saving..." %>
+    </div>
+  </.form>
+</div>

lib/memex_web/live/note_live/index.ex

@@ -0,0 +1,46 @@
+defmodule MemexWeb.NoteLive.Index do
+  use MemexWeb, :live_view
+
+  alias Memex.Notes
+  alias Memex.Notes.Note
+
+  @impl true
+  def mount(_params, _session, socket) do
+    {:ok, assign(socket, :notes, list_notes())}
+  end
+
+  @impl true
+  def handle_params(params, _url, socket) do
+    {:noreply, apply_action(socket, socket.assigns.live_action, params)}
+  end
+
+  defp apply_action(socket, :edit, %{"id" => id}) do
+    socket
+    |> assign(:page_title, "Edit Note")
+    |> assign(:note, Notes.get_note!(id))
+  end
+
+  defp apply_action(socket, :new, _params) do
+    socket
+    |> assign(:page_title, "New Note")
+    |> assign(:note, %Note{})
+  end
+
+  defp apply_action(socket, :index, _params) do
+    socket
+    |> assign(:page_title, "Listing Notes")
+    |> assign(:note, nil)
+  end
+
+  @impl true
+  def handle_event("delete", %{"id" => id}, socket) do
+    note = Notes.get_note!(id)
+    {:ok, _} = Notes.delete_note(note)
+
+    {:noreply, assign(socket, :notes, list_notes())}
+  end
+
+  defp list_notes do
+    Notes.list_notes()
+  end
+end

lib/memex_web/live/note_live/index.html.heex

@@ -0,0 +1,45 @@
+<h1>Listing Notes</h1>
+
+<%= if @live_action in [:new, :edit] do %>
+  <.modal return_to={Routes.note_index_path(@socket, :index)}>
+    <.live_component
+      module={MemexWeb.NoteLive.FormComponent}
+      id={@note.id || :new}
+      title={@page_title}
+      action={@live_action}
+      note={@note}
+      return_to={Routes.note_index_path(@socket, :index)}
+    />
+  </.modal>
+<% end %>
+
+<table>
+  <thead>
+    <tr>
+      <th>Title</th>
+      <th>Content</th>
+      <th>Tag</th>
+      <th>Visibility</th>
+
+      <th></th>
+    </tr>
+  </thead>
+  <tbody id="notes">
+    <%= for note <- @notes do %>
+      <tr id={"note-#{note.id}"}>
+        <td><%= note.title %></td>
+        <td><%= note.content %></td>
+        <td><%= note.tag %></td>
+        <td><%= note.visibility %></td>
+
+        <td>
+          <span><%= live_redirect "Show", to: Routes.note_show_path(@socket, :show, note) %></span>
+          <span><%= live_patch "Edit", to: Routes.note_index_path(@socket, :edit, note) %></span>
+          <span><%= link "Delete", to: "#", phx_click: "delete", phx_value_id: note.id, data: [confirm: "Are you sure?"] %></span>
+        </td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>
+
+<span><%= live_patch "New Note", to: Routes.note_index_path(@socket, :new) %></span>

lib/memex_web/live/note_live/show.ex

@@ -0,0 +1,21 @@
+defmodule MemexWeb.NoteLive.Show do
+  use MemexWeb, :live_view
+
+  alias Memex.Notes
+
+  @impl true
+  def mount(_params, _session, socket) do
+    {:ok, socket}
+  end
+
+  @impl true
+  def handle_params(%{"id" => id}, _, socket) do
+    {:noreply,
+     socket
+     |> assign(:page_title, page_title(socket.assigns.live_action))
+     |> assign(:note, Notes.get_note!(id))}
+  end
+
+  defp page_title(:show), do: "Show Note"
+  defp page_title(:edit), do: "Edit Note"
+end

lib/memex_web/live/note_live/show.html.heex

@@ -0,0 +1,41 @@
+<h1>Show Note</h1>
+
+<%= if @live_action in [:edit] do %>
+  <.modal return_to={Routes.note_show_path(@socket, :show, @note)}>
+    <.live_component
+      module={MemexWeb.NoteLive.FormComponent}
+      id={@note.id}
+      title={@page_title}
+      action={@live_action}
+      note={@note}
+      return_to={Routes.note_show_path(@socket, :show, @note)}
+    />
+  </.modal>
+<% end %>
+
+<ul>
+
+  <li>
+    <strong>Title:</strong>
+    <%= @note.title %>
+  </li>
+
+  <li>
+    <strong>Content:</strong>
+    <%= @note.content %>
+  </li>
+
+  <li>
+    <strong>Tag:</strong>
+    <%= @note.tag %>
+  </li>
+
+  <li>
+    <strong>Visibility:</strong>
+    <%= @note.visibility %>
+  </li>
+
+</ul>
+
+<span><%= live_patch "Edit", to: Routes.note_show_path(@socket, :edit, @note), class: "button" %></span> |
+<span><%= live_redirect "Back", to: Routes.note_index_path(@socket, :index) %></span>

lib/memex_web/router.ex

@@ -53,23 +53,38 @@ defmodule MemexWeb.Router do
     put "/users/reset_password/:token", UserResetPasswordController, :update
   end
 
-  scope "/", MemexWeb do
-    pipe_through [:browser, :require_authenticated_user]
+  live_session :default do
+    scope "/", MemexWeb do
+      pipe_through [:browser]
 
-    get "/users/settings", UserSettingsController, :edit
-    put "/users/settings", UserSettingsController, :update
-    delete "/users/settings/:id", UserSettingsController, :delete
-    get "/users/settings/confirm_email/:token", UserSettingsController, :confirm_email
+      live "/notes", NoteLive.Index, :index
+      live "/notes/:id", NoteLive.Show, :show
+    end
+
+    scope "/", MemexWeb do
+      pipe_through [:browser, :require_authenticated_user]
+
+      live "/notes/new", NoteLive.Index, :new
+      live "/notes/:id/edit", NoteLive.Index, :edit
+      live "/notes/:id/show/edit", NoteLive.Show, :edit
+
+      get "/users/settings", UserSettingsController, :edit
+      put "/users/settings", UserSettingsController, :update
+      delete "/users/settings/:id", UserSettingsController, :delete
+      get "/users/settings/confirm_email/:token", UserSettingsController, :confirm_email
+    end
   end
 
-  scope "/", MemexWeb do
-    pipe_through [:browser, :require_authenticated_user, :require_admin]
+  live_session :admin do
+    scope "/", MemexWeb do
+      pipe_through [:browser, :require_authenticated_user, :require_admin]
 
-    live_dashboard "/dashboard", metrics: MemexWeb.Telemetry, ecto_repos: [Memex.Repo]
+      live_dashboard "/dashboard", metrics: MemexWeb.Telemetry, ecto_repos: [Memex.Repo]
 
-    live "/invites", InviteLive.Index, :index
-    live "/invites/new", InviteLive.Index, :new
-    live "/invites/:id/edit", InviteLive.Index, :edit
+      live "/invites", InviteLive.Index, :index
+      live "/invites/new", InviteLive.Index, :new
+      live "/invites/:id/edit", InviteLive.Index, :edit
+    end
   end
 
   scope "/", MemexWeb do

priv/repo/migrations/20220726000552_create_notes.exs

@@ -0,0 +1,15 @@
+defmodule Memex.Repo.Migrations.CreateNotes do
+  use Ecto.Migration
+
+  def change do
+    create table(:notes, primary_key: false) do
+      add :id, :binary_id, primary_key: true
+      add :title, :string
+      add :content, :text
+      add :tag, {:array, :string}
+      add :visibility, :string
+
+      timestamps()
+    end
+  end
+end

test/memex/notes_test.exs

@@ -0,0 +1,65 @@
+defmodule Memex.NotesTest do
+  use Memex.DataCase
+
+  alias Memex.Notes
+
+  describe "notes" do
+    alias Memex.Notes.Note
+
+    import Memex.NotesFixtures
+
+    @invalid_attrs %{content: nil, tag: nil, title: nil, visibility: nil}
+
+    test "list_notes/0 returns all notes" do
+      note = note_fixture()
+      assert Notes.list_notes() == [note]
+    end
+
+    test "get_note!/1 returns the note with given id" do
+      note = note_fixture()
+      assert Notes.get_note!(note.id) == note
+    end
+
+    test "create_note/1 with valid data creates a note" do
+      valid_attrs = %{content: "some content", tag: [], title: "some title", visibility: :public}
+
+      assert {:ok, %Note{} = note} = Notes.create_note(valid_attrs)
+      assert note.content == "some content"
+      assert note.tag == []
+      assert note.title == "some title"
+      assert note.visibility == :public
+    end
+
+    test "create_note/1 with invalid data returns error changeset" do
+      assert {:error, %Ecto.Changeset{}} = Notes.create_note(@invalid_attrs)
+    end
+
+    test "update_note/2 with valid data updates the note" do
+      note = note_fixture()
+      update_attrs = %{content: "some updated content", tag: [], title: "some updated title", visibility: :private}
+
+      assert {:ok, %Note{} = note} = Notes.update_note(note, update_attrs)
+      assert note.content == "some updated content"
+      assert note.tag == []
+      assert note.title == "some updated title"
+      assert note.visibility == :private
+    end
+
+    test "update_note/2 with invalid data returns error changeset" do
+      note = note_fixture()
+      assert {:error, %Ecto.Changeset{}} = Notes.update_note(note, @invalid_attrs)
+      assert note == Notes.get_note!(note.id)
+    end
+
+    test "delete_note/1 deletes the note" do
+      note = note_fixture()
+      assert {:ok, %Note{}} = Notes.delete_note(note)
+      assert_raise Ecto.NoResultsError, fn -> Notes.get_note!(note.id) end
+    end
+
+    test "change_note/1 returns a note changeset" do
+      note = note_fixture()
+      assert %Ecto.Changeset{} = Notes.change_note(note)
+    end
+  end
+end

test/memex_web/live/note_live_test.exs

@@ -0,0 +1,110 @@
+defmodule MemexWeb.NoteLiveTest do
+  use MemexWeb.ConnCase
+
+  import Phoenix.LiveViewTest
+  import Memex.NotesFixtures
+
+  @create_attrs %{content: "some content", tag: [], title: "some title", visibility: :public}
+  @update_attrs %{content: "some updated content", tag: [], title: "some updated title", visibility: :private}
+  @invalid_attrs %{content: nil, tag: [], title: nil, visibility: nil}
+
+  defp create_note(_) do
+    note = note_fixture()
+    %{note: note}
+  end
+
+  describe "Index" do
+    setup [:create_note]
+
+    test "lists all notes", %{conn: conn, note: note} do
+      {:ok, _index_live, html} = live(conn, Routes.note_index_path(conn, :index))
+
+      assert html =~ "Listing Notes"
+      assert html =~ note.content
+    end
+
+    test "saves new note", %{conn: conn} do
+      {:ok, index_live, _html} = live(conn, Routes.note_index_path(conn, :index))
+
+      assert index_live |> element("a", "New Note") |> render_click() =~
+               "New Note"
+
+      assert_patch(index_live, Routes.note_index_path(conn, :new))
+
+      assert index_live
+             |> form("#note-form", note: @invalid_attrs)
+             |> render_change() =~ "can't be blank"
+
+      {:ok, _, html} =
+        index_live
+        |> form("#note-form", note: @create_attrs)
+        |> render_submit()
+        |> follow_redirect(conn, Routes.note_index_path(conn, :index))
+
+      assert html =~ "Note created successfully"
+      assert html =~ "some content"
+    end
+
+    test "updates note in listing", %{conn: conn, note: note} do
+      {:ok, index_live, _html} = live(conn, Routes.note_index_path(conn, :index))
+
+      assert index_live |> element("#note-#{note.id} a", "Edit") |> render_click() =~
+               "Edit Note"
+
+      assert_patch(index_live, Routes.note_index_path(conn, :edit, note))
+
+      assert index_live
+             |> form("#note-form", note: @invalid_attrs)
+             |> render_change() =~ "can't be blank"
+
+      {:ok, _, html} =
+        index_live
+        |> form("#note-form", note: @update_attrs)
+        |> render_submit()
+        |> follow_redirect(conn, Routes.note_index_path(conn, :index))
+
+      assert html =~ "Note updated successfully"
+      assert html =~ "some updated content"
+    end
+
+    test "deletes note in listing", %{conn: conn, note: note} do
+      {:ok, index_live, _html} = live(conn, Routes.note_index_path(conn, :index))
+
+      assert index_live |> element("#note-#{note.id} a", "Delete") |> render_click()
+      refute has_element?(index_live, "#note-#{note.id}")
+    end
+  end
+
+  describe "Show" do
+    setup [:create_note]
+
+    test "displays note", %{conn: conn, note: note} do
+      {:ok, _show_live, html} = live(conn, Routes.note_show_path(conn, :show, note))
+
+      assert html =~ "Show Note"
+      assert html =~ note.content
+    end
+
+    test "updates note within modal", %{conn: conn, note: note} do
+      {:ok, show_live, _html} = live(conn, Routes.note_show_path(conn, :show, note))
+
+      assert show_live |> element("a", "Edit") |> render_click() =~
+               "Edit Note"
+
+      assert_patch(show_live, Routes.note_show_path(conn, :edit, note))
+
+      assert show_live
+             |> form("#note-form", note: @invalid_attrs)
+             |> render_change() =~ "can't be blank"
+
+      {:ok, _, html} =
+        show_live
+        |> form("#note-form", note: @update_attrs)
+        |> render_submit()
+        |> follow_redirect(conn, Routes.note_show_path(conn, :show, note))
+
+      assert html =~ "Note updated successfully"
+      assert html =~ "some updated content"
+    end
+  end
+end

test/support/fixtures/notes_fixtures.ex

@@ -0,0 +1,23 @@
+defmodule Memex.NotesFixtures do
+  @moduledoc """
+  This module defines test helpers for creating
+  entities via the `Memex.Notes` context.
+  """
+
+  @doc """
+  Generate a note.
+  """
+  def note_fixture(attrs \\ %{}) do
+    {:ok, note} =
+      attrs
+      |> Enum.into(%{
+        content: "some content",
+        tag: [],
+        title: "some title",
+        visibility: :public
+      })
+      |> Memex.Notes.create_note()
+
+    note
+  end
+end