Stub out a /demo endpoint

app/controllers/dashboard_controller.rb

@@ -3,43 +3,45 @@ class DashboardController < ApplicationController
   layout "dashboard"
 
   # === THESE CONSTANTS ARE CONFIGURABLE: ===
-  EVERY_STATIC_PAGE = [ :front_page,
-                        :main_app,
-                        :password_reset,
-                        :tos_update, ]
+  EVERY_STATIC_PAGE = [:front_page,
+                       :main_app,
+                       :password_reset,
+                       :tos_update,
+                       :demo]
 
   OUTPUT_URL = "/" + File.join("assets", "parcel") # <= served from public/ dir
                                                    # <= See PUBLIC_OUTPUT_DIR
-  CACHE_DIR  = File.join(".cache")
+  CACHE_DIR = File.join(".cache")
 
-  CSS_INPUTS  = {
+  CSS_INPUTS = {
     front_page: "/css/laptop_splash.scss",
-    default:    "/css/_index.scss",
+    default: "/css/_index.scss",
   }.with_indifferent_access
 
-  JS_INPUTS   = {
-    main_app:       "/entry.tsx",
-    front_page:     "/front_page/index.tsx",
+  JS_INPUTS = {
+    main_app: "/entry.tsx",
+    front_page: "/front_page/index.tsx",
     password_reset: "/password_reset/index.tsx",
-    tos_update:     "/tos_update/index.tsx",
+    tos_update: "/tos_update/index.tsx",
+    demo: "/demo/index.tsx",
   }.with_indifferent_access
 
   # === THESE CONSTANTS ARE NON-CONFIGURABLE. ===
   # They are calculated based on config above.
 
-  RELEASE_CHUNK     = GlobalConfig::LONG_REVISION == "NONE" ?
+  RELEASE_CHUNK = GlobalConfig::LONG_REVISION == "NONE" ?
     SecureRandom.hex.first(5) : GlobalConfig::LONG_REVISION
   CACHE_BUST_STRING = "?version=#{RELEASE_CHUNK}"
   PUBLIC_OUTPUT_DIR = File.join("public", OUTPUT_URL)
 
   CSS_OUTPUTS = CSS_INPUTS.reduce({}) do |acc, (k, v)|
-    file     = v.gsub(/\.scss$/, ".css")
+    file = v.gsub(/\.scss$/, ".css")
     acc[k] = File.join(OUTPUT_URL, file)
     acc
   end.with_indifferent_access
 
   JS_OUTPUTS = JS_INPUTS.reduce({}) do |acc, (k, v)|
-    file   = v.gsub(/\.tsx?$/, ".js")
+    file = v.gsub(/\.tsx?$/, ".js")
     acc[k] = File.join(OUTPUT_URL, file)
     acc
   end.with_indifferent_access
@@ -50,9 +52,9 @@ class DashboardController < ApplicationController
     .map { |x| File.join("frontend", x) }
     .join(" ")
 
-  PARCEL_HMR_OPTS   = [
+  PARCEL_HMR_OPTS = [
     "--no-hmr",
-    "--no-cache"
+    "--no-cache",
   ].join(" ")
 
   EVERY_STATIC_PAGE.map do |actn|
@@ -61,22 +63,22 @@ class DashboardController < ApplicationController
         # If you don't do this, you will hit hard to debug
         # CSP errors on local when changing API_HOST.
         response.headers["Cache-Control"] = "no-cache, no-store"
-        response.headers["Pragma"]        = "no-cache"
-        response.headers["Expires"]       = "0"
+        response.headers["Pragma"] = "no-cache"
+        response.headers["Expires"] = "0"
         load_css_assets
         load_js_assets
         render actn
       rescue ActionView::MissingTemplate => q
-        raise ActionController::RoutingError, "Bad URL in dashboard"
+        raise ActionController::RoutingError, "Bad URL in dashboard. -Rick"
       end
     end
   end
 
   def confirmation_page
     load_css_assets
-    user   = User.find_by!(confirmation_token: params.fetch(:token))
+    user = User.find_by!(confirmation_token: params.fetch(:token))
     # Two use cases:                  re-confirmation   Email change
-    klass  = user.unconfirmed_email? ? Users::Reverify : Users::Verify
+    klass = user.unconfirmed_email? ? Users::Reverify : Users::Verify
     @token = klass.run!(user: user).to_json
     render :confirmation_page
   rescue User::AlreadyVerified
@@ -90,7 +92,7 @@ class DashboardController < ApplicationController
     begin
       report = JSON.parse(payload)
     rescue
-      report = {problem: "Crashed while parsing report"}
+      report = { problem: "Crashed while parsing report" }
     end
     Rollbar.info("CSP Violation", report)
 
@@ -101,13 +103,14 @@ class DashboardController < ApplicationController
   # Do not use this if you use GCS- it will slow your app down.
   def direct_upload
     raise "No." unless Api::ImagesController.store_locally
-    name        = params.fetch(:key).split("/").last
-    path        = File.join("public", "direct_upload", "temp", name)
+    name = params.fetch(:key).split("/").last
+    path = File.join("public", "direct_upload", "temp", name)
     File.open(path, "wb") { |f| f.write(params[:file]) }
     render json: ""
   end
 
-private
+  private
+
   def load_css_assets
     @css_assets ||= [action_name, :default].reduce([]) do |list, action|
       asset = CSS_OUTPUTS[action] # Not every endpoint has custom CSS.
@@ -118,8 +121,8 @@ private
 
   def load_js_assets
     # Every DashboardController has a JS SBundle.
-    @js_assets ||= \
-      [ JS_OUTPUTS.fetch(action_name) ].map { |x| x + CACHE_BUST_STRING }
+    @js_assets ||=
+      [JS_OUTPUTS.fetch(action_name)].map { |x| x + CACHE_BUST_STRING }
   end
 
   def set_global_config

app/views/dashboard/demo.html.erb

@@ -0,0 +1 @@
+<%# Intentionally blank template required by router for content generated by frontend. %>

config/routes.rb

@@ -108,8 +108,9 @@ FarmBot::Application.routes.draw do
   get "/app/controls" => "dashboard#main_app", as: :app_landing_page
   match "/app/*path", to: "dashboard#main_app", via: :all, constraints: { format: "html" }
 
-  get "/tos_update" => "dashboard#tos_update", as: :tos_update
+  get "/demo" => "dashboard#demo", as: :demo_main
   get "/password_reset/*token" => "dashboard#password_reset", as: :password_reset
+  get "/tos_update" => "dashboard#tos_update", as: :tos_update
   get "/verify/:token" => "dashboard#confirmation_page", as: :confirmation_page
   post "/csp_reports" => "dashboard#csp_reports", as: :csp_report
   post "/direct_upload" => "dashboard#direct_upload", as: :direct_upload

frontend/demo/index.tsx

@@ -0,0 +1 @@
+document.write("It works!");