NEW: Initial task mgmt (#4)

lib/planner_web/live/landing_live.ex

@@ -0,0 +1,83 @@
+defmodule PlannerWeb.LandingLive do
+  use Phoenix.LiveView, layout: {PlannerWeb.LayoutView, "live.html"}
+  use Phoenix.HTML
+
+  import PlannerWeb.ErrorHelpers
+
+  alias Planner.Tasks
+  alias Planner.Tasks.Task
+
+  def mount(_params, _session, socket) do
+    socket =
+      socket
+      # |> put_flash(:info, "hello world")
+      |> assign(:new_task_changeset, Tasks.change_task(%Task{}))
+      |> assign(:tasks, Tasks.list_unfinished_tasks())
+
+    {:ok, socket}
+  end
+
+  def render(assigns) do
+    ~L"""
+    <%= f = form_for(@new_task_changeset, "#", [phx_submit: :save_new_task]) %>
+      <%= label f, :value, "New Task" %>
+      <%= text_input f, :value %>
+      <%= error_tag f, :value %>
+
+      <%= submit "Create" %>
+    </form>
+
+    <hr>
+
+    <table>
+      <thead>
+        <tr>
+          <th colspan="3">tasks</th>
+        </tr>
+      </thead>
+      <tbody>
+        <%= for task <- @tasks do %>
+          <tr>
+            <td><%= task.value %></td>
+            <td><button phx-click="delete_task" phx-value-task_id="<%= task.id %>">delete</button></td>
+            <td><button phx-click="finish_task" phx-value-task_id="<%= task.id %>">done</button></td>
+          </tr>
+        <% end %>
+      </tbody>
+    </table>
+    """
+  end
+
+  def handle_event("save_new_task", %{"task" => task_params}, socket) do
+    case Tasks.add_task(task_params) do
+      {:ok, task} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "task created")
+         |> assign(:tasks, Tasks.list_unfinished_tasks())}
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        {:noreply,
+         socket
+         |> assign(new_task_changeset: changeset)}
+    end
+  end
+
+  def handle_event("delete_task", %{"task_id" => task_id}, socket) do
+    Tasks.delete_task_by_id!(task_id)
+
+    {:noreply,
+     socket
+     |> put_flash(:info, "task deleted")
+     |> assign(:tasks, Tasks.list_unfinished_tasks())}
+  end
+
+  def handle_event("finish_task", %{"task_id" => task_id}, socket) do
+    Tasks.finish_task_by_id!(task_id)
+
+    {:noreply,
+     socket
+     |> put_flash(:info, "task completed")
+     |> assign(:tasks, Tasks.list_unfinished_tasks())}
+  end
+end