Backend utils for broadcasting

app/models/global_bulletin.rb

@@ -1,5 +1,5 @@
 class GlobalBulletin < ActiveRecord::Base
   self.inheritance_column = "none"
   validates_uniqueness_of :slug
-  validates_presence_of :content, :href, :slug, :type
+  validates_presence_of :content, :slug, :type
 end

db/structure.sql

@@ -625,6 +625,7 @@ ALTER SEQUENCE public.fragments_id_seq OWNED BY public.fragments.id;
 CREATE TABLE public.global_bulletins (
     id bigint NOT NULL,
     href character varying,
+    href_label character varying,
     slug character varying,
     title character varying,
     type character varying,

lib/tasks/api.rake

@@ -38,7 +38,7 @@ def user_typed?(word)
 end
 
 namespace :api do
-  desc "Runs pending email digests. "\
+  desc "Runs pending email digests. " \
        "Use the `FOREVER` ENV var to continually check."
   task log_digest: :environment do
     puts "Running log digest loop..."
@@ -51,14 +51,13 @@ namespace :api do
   end
 
   def parcel(cmd, opts = " ")
-    intro = [ "node_modules/parcel-bundler/bin/cli.js",
+    intro = ["node_modules/parcel-bundler/bin/cli.js",
              cmd,
              DashboardController::PARCEL_ASSET_LIST,
              "--out-dir",
              DashboardController::PUBLIC_OUTPUT_DIR,
              "--public-url",
-              DashboardController::OUTPUT_URL,
-            ].join(" ")
+             DashboardController::OUTPUT_URL].join(" ")
     sh [intro, opts].join(" ")
   end
 
@@ -67,8 +66,7 @@ namespace :api do
     # Clear out cache and previous builds on initial load.
     sh ["rm -rf",
         DashboardController::CACHE_DIR,
-        DashboardController::PUBLIC_OUTPUT_DIR
-       ].join(" ")
+        DashboardController::PUBLIC_OUTPUT_DIR].join(" ")
     parcel "watch", DashboardController::PARCEL_HMR_OPTS
   end
 
@@ -79,7 +77,7 @@ namespace :api do
 
   desc "Reset _everything_, including your database"
   task :reset do
-    puts "This is going to destroy _ALL_ of your local Farmbot SQL data and "\
+    puts "This is going to destroy _ALL_ of your local Farmbot SQL data and " \
          "configs. Type 'destroy' to continue, enter to abort."
     if user_typed?("destroy")
       hard_reset_api

lib/tasks/broadcast.rake

@@ -0,0 +1,77 @@
+class BroadcastToAll < Mutations::Command
+  RELEVANT_TIMEFRAME = 7.months.ago
+
+  required do
+    string :title
+    string :content
+  end
+
+  optional do
+    string :type, default: "info"
+    string :href
+    string :href_label
+  end
+
+  def execute
+    create_bulletin
+    attach_alerts
+  end
+
+  def create_bulletin
+    @bulletin ||= GlobalBulletin.create!(title: title,
+                                         type: type,
+                                         content: content,
+                                         slug: slug,
+                                         href: href,
+                                         href_label: href_label)
+  end
+
+  def slug
+    @slug ||= title.parameterize
+  end
+
+  def devices
+    @devices ||= Device.where("updated_at > ?", RELEVANT_TIMEFRAME)
+  end
+
+  def attach_alerts
+    puts "This will take a while..."
+    devices.map do |d|
+      puts "attaching Alert to Device #{d.id}"
+      Alerts::Create.run!(problem_tag: Alert::BULLETIN,
+                          device: d,
+                          slug: slug)
+    end
+  end
+end
+
+def prompt(query)
+  puts "=== #{query}"
+  output = STDIN.gets.chomp
+  output.length == 0 ? nil : output
+end
+
+def mutliline_prompt(query)
+  puts "=== #{query}"
+  puts "TYPE @@@ TO FINISH"
+  buffer = []
+  loop {
+    chunk = STDIN.gets.chomp
+    break if chunk == "@@@" # Just to show one example for a break condition here
+    buffer.push(chunk)
+  }
+  buffer.length == 0 ? nil : buffer.join("\n")
+end
+
+namespace :broadcast do
+  desc "Create a global bulletin for all users"
+  task to_all: :environment do
+    puts "BEGIN"
+    BroadcastToAll.run!(type: prompt("(optional) Enter `type`"),
+                        href: prompt("(optional) Enter href"),
+                        href_label: prompt("(optional) Enter href label"),
+                        title: prompt("Enter title"),
+                        content: mutliline_prompt("Enter content"))
+    puts "DONE"
+  end
+end