MastoFE: Add PWA manifest.

config/config.exs

@@ -322,6 +322,16 @@
   ],
   default_mascot: :pleroma_fox_tan
 
+config :pleroma, :manifest,
+  icons: [
+    %{
+      src: "/static/logo.png",
+      type: "image/png"
+    }
+  ],
+  theme_color: "#282c37",
+  background_color: "#191b22"
+
 config :pleroma, :activitypub,
   unfollow_blocked: true,
   outgoing_blocks: true,

config/description.exs

@@ -1098,6 +1098,45 @@
       }
     ]
   },
+  %{
+    group: :pleroma,
+    key: :manifest,
+    type: :group,
+    description:
+      "This section describe PWA manifest instance-specific values. Currently this option relate only for MastoFE",
+    children: [
+      %{
+        key: :icons,
+        type: {:list, :map},
+        description: "Describe the icons of the app",
+        suggestion: [
+          %{
+            src: "/static/logo.png"
+          },
+          %{
+            src: "/static/icon.png",
+            type: "image/png"
+          },
+          %{
+            src: "/static/icon.ico",
+            sizes: "72x72 96x96 128x128 256x256"
+          }
+        ]
+      },
+      %{
+        key: :theme_color,
+        type: :string,
+        description: "Describe the theme color of the app",
+        suggestions: ["#282c37", "mediumpurple"]
+      },
+      %{
+        key: :background_color,
+        type: :string,
+        description: "Describe the background color of the app",
+        suggestions: ["#191b22", "aliceblue"]
+      }
+    ]
+  },
   %{
     group: :pleroma,
     key: :mrf_simple,

lib/pleroma/web/masto_fe_controller.ex

@@ -34,6 +34,12 @@ def index(%{assigns: %{user: user}} = conn, _params) do
     end
   end
 
+  @doc "GET /web/manifest.json"
+  def manifest(conn, _params) do
+    conn
+    |> render("manifest.json")
+  end
+
   @doc "PUT /api/web/settings"
   def put_settings(%{assigns: %{user: user}} = conn, %{"data" => settings} = _params) do
     with {:ok, _} <- User.update_info(user, &User.Info.mastodon_settings_update(&1, settings)) do

lib/pleroma/web/router.ex

@@ -591,6 +591,12 @@ defmodule Pleroma.Web.Router do
     get("/:version", Nodeinfo.NodeinfoController, :nodeinfo)
   end
 
+  scope "/", Pleroma.Web do
+    pipe_through(:api)
+
+    get("/web/manifest.json", MastoFEController, :manifest)
+  end
+
   scope "/", Pleroma.Web do
     pipe_through(:mastodon_html)
 

lib/pleroma/web/templates/masto_fe/index.html.eex

@@ -4,9 +4,13 @@
 <meta charset='utf-8'>
 <meta content='width=device-width, initial-scale=1' name='viewport'>
 <title>
-<%= Pleroma.Config.get([:instance, :name]) %>
+<%= Config.get([:instance, :name]) %>
 </title>
 <link rel="icon" type="image/png" href="/favicon.png"/>
+<link rel="manifest" type="applicaton/manifest+json" href="<%= masto_fe_path(Pleroma.Web.Endpoint, :manifest) %>" />
+
+<meta name="theme-color" content="<%= Config.get([:manifest, :theme_color]) %>" />
+
 <script crossorigin='anonymous' src="/packs/locales.js"></script>
 <script crossorigin='anonymous' src="/packs/locales/glitch/en.js"></script>
 

lib/pleroma/web/views/masto_fe_view.ex

@@ -99,4 +99,23 @@ def initial_state(token, user, custom_emojis) do
   defp present?(nil), do: false
   defp present?(false), do: false
   defp present?(_), do: true
+
+  def render("manifest.json", _params) do
+    %{
+      name: Config.get([:instance, :name]),
+      description: Config.get([:instance, :description]),
+      icons: Config.get([:manifest, :icons]),
+      theme_color: Config.get([:manifest, :theme_color]),
+      background_color: Config.get([:manifest, :background_color]),
+      display: "standalone",
+      scope: Pleroma.Web.base_url(),
+      start_url: masto_fe_path(Pleroma.Web.Endpoint, :index, ["getting-started"]),
+      categories: [
+        "social"
+      ],
+      serviceworker: %{
+        src: "/sw.js"
+      }
+    }
+  end
 end