Cache application data for offline use

lib/api/applications.rb

@@ -1,6 +1,8 @@
 class W3DHub
   class Api
     class Applications
+      attr_reader :data
+
       def initialize(response)
         @data = JSON.parse(response, symbolize_names: true)
 

lib/pages/login.rb

@@ -102,6 +102,8 @@ class W3DHub
       end
 
       def populate_account_info
+        return if Store.offline_mode
+
         @host.instance_variable_get(:"@account_container").clear do
           flow(fill: true, height: 1.0) do
             avatar_image = begin

lib/settings.rb

@@ -71,5 +71,15 @@ class W3DHub
     def save_settings
       File.write(SETTINGS_FILE_PATH, @settings.to_json)
     end
+
+    def save_application_cache(json)
+      File.write(APPLICATIONS_CACHE_FILE_PATH, json)
+    end
+
+    def load_application_cache
+      JSON.parse(File.read(APPLICATIONS_CACHE_FILE_PATH), symbolize_names: true)
+    rescue
+      nil
+    end
   end
 end

lib/states/boot.rb

@@ -29,8 +29,8 @@ class W3DHub
 
           stack(width: 1.0, height: 60) do
             flow(width: 1.0, height: 26, margin_left: 16, margin_right: 16, margin_bottom: 8, margin_top: 8) do
-              @status_label = caption "Starting #{I18n.t(:app_name_simple)}...", width: 0.5
-              para "#{I18n.t(:app_name)} #{W3DHub::VERSION}", width: 0.5, text_align: :right
+              @status_label = caption "Starting #{I18n.t(:app_name_simple)}...", fill: true
+              para "#{I18n.t(:app_name)} #{W3DHub::VERSION}", text_align: :right
             end
 
             @progressbar = progress height: 4, width: 1.0, margin_left: 16, margin_right: 16, margin_bottom: 8
@@ -52,7 +52,16 @@ class W3DHub
 
         @progressbar.value = @fraction
 
-        load_offline_applications_list if @offline_mode
+        if @offline_mode
+          load_offline_applications_list
+
+          unless Store.applications
+            @progressbar.value = 0.0
+            @status_label.value = "<c=f80>Unable to connect to W3D Hub API. No application data cached, unable to continue.</c>"
+
+            return
+          end
+        end
 
         if @offline_mode || (@progressbar.value >= 1.0 && @task_index == @tasks.size)
           pop_state
@@ -156,7 +165,7 @@ class W3DHub
         Api.on_thread(:applications) do |applications|
           if applications
             Store.applications = applications
-
+            Store.settings.save_application_cache(applications.data.to_json)
             @tasks[:applications][:complete] = true
           else
             # FIXME: Failed to retreive!
@@ -227,6 +236,12 @@ class W3DHub
       end
 
       def load_offline_applications_list
+        if (application_cache = Store.settings.load_application_cache)
+          Store.applications = Api::Applications.new(application_cache.to_json)
+
+          return
+        end
+
         hash = {
           applications: []
         }

w3d_hub_linux_launcher.rb

@@ -23,6 +23,7 @@ class W3DHub
   GAME_ROOT_PATH = File.expand_path(".", __dir__)
   CACHE_PATH = "#{GAME_ROOT_PATH}/data/cache"
   SETTINGS_FILE_PATH = "#{GAME_ROOT_PATH}/data/settings.json"
+  APPLICATIONS_CACHE_FILE_PATH = "#{GAME_ROOT_PATH}/data/applications_cache.json"
 
   LOGGER = Logger.new("#{GAME_ROOT_PATH}/data/logs/w3d_hub_linux_launcher.log", "daily")
   LOGGER.level = Logger::Severity::DEBUG # W3DHUB_DEBUG ? Logger::Severity::DEBUG : Logger::Severity::WARN