add json data export

lib/memex_web/controllers/export_controller.ex

@@ -0,0 +1,17 @@
+defmodule MemexWeb.ExportController do
+  use MemexWeb, :controller
+  alias Memex.{Contexts, Notes, Pipelines, Pipelines.Steps}
+
+  def export(%{assigns: %{current_user: current_user}} = conn, %{"mode" => "json"}) do
+    pipelines =
+      Pipelines.list_pipelines(current_user)
+      |> Enum.map(fn pipeline -> Steps.preload_steps(pipeline, current_user) end)
+
+    json(conn, %{
+      user: current_user,
+      notes: Notes.list_notes(current_user),
+      contexts: Contexts.list_contexts(current_user),
+      pipelines: pipelines
+    })
+  end
+end

lib/memex_web/router.ex

@@ -76,6 +76,7 @@ defmodule MemexWeb.Router do
       put "/users/settings", UserSettingsController, :update
       delete "/users/settings/:id", UserSettingsController, :delete
       get "/users/settings/confirm_email/:token", UserSettingsController, :confirm_email
+      get "/export/:mode", ExportController, :export
     end
 
     scope "/", MemexWeb do

lib/memex_web/templates/user_settings/edit.html.heex

@@ -136,12 +136,22 @@
 
   <hr class="hr" />
 
-  <.link
-    href={Routes.user_settings_path(@conn, :delete, @current_user)}
-    method={:delete}
-    class="btn btn-alert"
-    data-confirm={dgettext("prompts", "are you sure you want to delete your account?")}
-  >
-    <%= dgettext("actions", "delete user") %>
-  </.link>
+  <div class="flex justify-center items-center">
+    <.link
+      href={Routes.export_path(@conn, :export, :json)}
+      class="mx-4 my-2 btn btn-primary"
+      target="_blank"
+    >
+      <%= dgettext("actions", "export data as json") %>
+    </.link>
+
+    <.link
+      href={Routes.user_settings_path(@conn, :delete, @current_user)}
+      method={:delete}
+      class="mx-4 my-2 btn btn-alert"
+      data-confirm={dgettext("prompts", "are you sure you want to delete your account?")}
+    >
+      <%= dgettext("actions", "delete user") %>
+    </.link>
+  </div>
 </div>