Add simple web interface

Gemfile.lock

@@ -36,9 +36,14 @@ GEM
     diff-lcs (1.2.5)
     globalid (0.3.3)
       activesupport (>= 4.1.0)
+    haml (4.0.6)
+      tilt
     i18n (0.7.0)
     json (1.8.2)
     minitest (5.5.1)
+    rack (1.6.0)
+    rack-protection (1.5.3)
+      rack
     rake (10.4.2)
     rspec (3.2.0)
       rspec-core (~> 3.2.0)
@@ -53,9 +58,14 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.2.0)
     rspec-support (3.2.2)
+    sinatra (1.4.5)
+      rack (~> 1.4)
+      rack-protection (~> 1.4)
+      tilt (~> 1.3, >= 1.3.4)
     slop (3.6.0)
     sqlite3 (1.3.10)
     thread_safe (0.3.4)
+    tilt (1.4.1)
     timecop (0.7.3)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
@@ -67,7 +77,9 @@ DEPENDENCIES
   bundler (>= 1.0.0)
   byebug
   crono!
+  haml
   rake (~> 10.0)
   rspec (~> 3.0)
+  sinatra
   sqlite3
   timecop (~> 0.7)

README.md

@@ -24,7 +24,9 @@ Other versions are untested but might work fine.
 
 Add the following line to your application's Gemfile:
 
-    gem 'crono'
+```ruby
+gem 'crono'
+```
 
 Run the `bundle` command to install it.  
 After you install Crono, you can run the generator:
@@ -47,40 +49,48 @@ Crono can use Active Job jobs from `app/jobs/`. The only requirements is that th
 
 Here's an example of a test job:
 
-    # app/jobs/test_job.rb
-    class TestJob < ActiveJob::Base
-      def perform
-        # put you scheduled code here
-        # Comments.deleted.clean_up...
-      end
-    end
+```ruby
+# app/jobs/test_job.rb
+class TestJob < ActiveJob::Base
+  def perform
+    # put you scheduled code here
+    # Comments.deleted.clean_up...
+  end
+end
+```
 
 The ActiveJob jobs is convenient because you can use one job in both periodic and enqueued ways. But Active Job is not required. Any class can be used as a crono job if it implements a method `perform` without arguments:
 
-    class TestJob # This is not an Active Job job, but pretty legal Crono job.
-      def perform
-        # put you scheduled code here
-        # Comments.deleted.clean_up...
-      end
-    end
-
+```ruby
+class TestJob # This is not an Active Job job, but pretty legal Crono job.
+  def perform
+    # put you scheduled code here
+    # Comments.deleted.clean_up...
+  end
+end
+```
 
 #### Job Schedule
 
 The schedule described in the configuration file `config/cronotab.rb`, that created using `crono:install` or manually. The semantic is pretty straightforward:
 
-    # config/cronotab.rb
-    Crono.perform(TestJob).every 2.days, at: "15:30"
+```ruby
+# config/cronotab.rb
+Crono.perform(TestJob).every 2.days, at: "15:30"
+```
 
 You can schedule one job a few times, if you want a job to be performed a few times a day:
 
-    Crono.perform(TestJob).every 1.day, at: "00:00"
-    Crono.perform(TestJob).every 1.day, at: "12:00"
+```ruby
+Crono.perform(TestJob).every 1.day, at: "00:00"
+Crono.perform(TestJob).every 1.day, at: "12:00"
+```
 
 The `at` can be a Hash:
 
-    Crono.perform(TestJob).every 1.day, at: {hour: 12, min: 15}
-
+```ruby
+Crono.perform(TestJob).every 1.day, at: {hour: 12, min: 15}
+```
 
 #### Run daemon
 
@@ -98,6 +108,28 @@ Usage: crono [options]
     -e, --environment ENV            Application environment (Default: development)
 ```
 
+## Web UI
+
+Crono comes with a Sinatra application that can display the current state of Crono jobs.  
+Add `sinatra` and `haml` to your Gemfile  
+
+```ruby
+gam 'haml'
+gem 'sinatra', require: nil
+```
+
+Add the following to your `config/routes.rb`:
+
+```ruby
+require 'crono/web'
+
+Rails.application.routes.draw do
+    mount Crono::Web, at: '/crono'
+    ...
+```
+
+Access management and other questions described in the [wiki](https://github.com/plashchynski/crono/wiki/Web-UI).
+
 ## Capistrano
 
 Use the `capistrano-crono` gem ([github](https://github.com/plashchynski/capistrano-crono/)).

crono.gemspec

@@ -22,6 +22,8 @@ Gem::Specification.new do |s|
   s.add_development_dependency  "timecop", "~> 0.7"
   s.add_development_dependency  "sqlite3"
   s.add_development_dependency  "byebug"
+  s.add_development_dependency  "sinatra"
+  s.add_development_dependency  "haml"
 
   s.files        = `git ls-files`.split("\n")
   s.executables  = `git ls-files`.split("\n").map{|f| f =~ /^bin\/(.*)/ ? $1 : nil}.compact

lib/crono/web.rb

@@ -0,0 +1,18 @@
+require 'haml'
+require 'sinatra/base'
+
+module Crono
+  class Web < Sinatra::Base
+    def app
+      Sinatra::Application
+      end
+    set :root, File.expand_path(File.dirname(__FILE__) + "/../../web")
+    set :public_folder, Proc.new { "#{root}/assets" }
+    set :views, Proc.new { "#{root}/views" }
+
+    get '/' do
+      @jobs = Crono::CronoJob.all
+      haml :dashboard, format: :html5
+    end
+  end
+end

web/views/dashboard.haml

@@ -0,0 +1,27 @@
+!!! 5
+%html{lang: "en"}
+  %head
+    %meta{charset: "utf-8"}
+    %meta{"http-equiv" => "X-UA-Compatible", content: "IE=edge"}
+    %meta{name: "viewport", content: "width=device-width, initial-scale=1"}
+
+    %title Crono Dashboard
+
+    %link{href: "https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css", rel: "stylesheet"}/
+    %link{href: "https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap-theme.min.css", rel: "stylesheet"}/
+
+  %body
+    .container
+      %h2 Crono Jobs
+      %table.table
+        %tr
+          %th Job
+          %th Last performed at
+          %th
+        - for job in @jobs
+          %tr
+            %td= job.job_id
+            %td= job.last_performed_at
+
+    %script{src: "https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"}
+    %script{src: "https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"}