Merge pull request #1 from andresilveira/autoscaling

Autoscaling

Rakefile

@@ -7,7 +7,6 @@ namespace :db do
       :database => "fireboard"
     )
   end
-
   desc "Run all migrations at migrations path"
     task :migrate => :configure_connection do
       ActiveRecord::Migration.verbose = true
@@ -21,3 +20,27 @@ namespace :db do
   end
 end
 
+namespace :reports do
+  task :configure_connection do
+    ActiveRecord::Base.establish_connection(
+      :adapter => "mysql2",
+      :database => "fireboard"
+    )
+  end
+  desc "Rollback all reports made today"
+  task :rollback => :configure_connection do
+    class Report < ActiveRecord::Base
+    end
+    system("rm -rf ./charts/#{Time.now.strftime("%Y%m%d")}")
+    deleted = 0
+    reports = Report.all
+    reports.each do |report|
+      if report.created_at.day == Time.now.day
+        report.delete
+        deleted += 1
+      end
+    end
+    p "#{deleted} entries was destroyed"
+  end
+end
+

firechart.rb

@@ -1,7 +1,25 @@
 module FireChart
+
+  GRAPH_FACTOR = 5.5 # because of chart size limited (yet)
+  @@current_scale = 1
+
+  def auto_scale data
+    if data.max > 100
+      @@current_scale = (data.max / 100.0).round
+    end
+    return @@current_scale
+  end
+
+  def print_scale
+    %Q{
+      <rect x="830" y="625" width="150" height="25" fill="white" />
+      <text font-family="Verdana" font-size="15" fill="black" x="855" y="643">Escala: #{@@current_scale}x</text>
+    }
+  end
+
   def generate_shape
     %Q{
-      <rect x='0' y='0' width='980' height='600' fill='rgb(241,241,241)' style='stroke:rgb(241,241,241); stroke-width: 10'/>
+      <rect x='0' y='0' width='980' height='650' fill='rgb(241,241,241)' style='stroke:rgb(241,241,241); stroke-width: 10'/>
       <rect x='50' y='50' width='930' height='550' fill='white' />
     }
   end
@@ -35,7 +53,7 @@ def generate_marks bugs
     i = 0
     dia = 50
     while i < bugs.size
-      marks += "<circle cx='#{dia}' cy='#{600 - bugs[i] * 5.5}' r='4' fill='#2166AC' /> \n"
+      marks += "<circle cx='#{dia}' cy='#{600 - bugs[i] * (GRAPH_FACTOR/@@current_scale)}' r='4' fill='#2166AC' /> \n"
       i += 1
       dia += 30
     end
@@ -50,7 +68,7 @@ def generate_data_line bugs
     dia = 50
 
     while i < bugs.size
-      data_line += "#{dia}, #{600 - bugs[i] * 5.5} \n"
+      data_line += "#{dia}, #{600 - bugs[i] * (GRAPH_FACTOR / @@current_scale)} \n"
       i += 1
       dia += 30
     end
@@ -61,6 +79,8 @@ def generate_data_line bugs
   end
 
   def create_chart project_name, bug_occurrences, options = {}
+    auto_scale bug_occurrences
+
     svg_string = %Q{<?xml version='1.0' encoding='UTF-8'?>
       <!DOCTYPE svg PUBLIC '-//W3C//DTD SVG 1.1//EN' 'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd'>
       <?xml-stylesheet href='brushmetal.css' type='text/css'?>
@@ -74,6 +94,7 @@ def create_chart project_name, bug_occurrences, options = {}
       <!-- / Marks -->
       <!-- Data_Line -->
       #{generate_data_line(bug_occurrences)}
+      #{print_scale}
       <!-- / Data_Line -->
       </svg>
     }
@@ -89,5 +110,3 @@ def create_chart project_name, bug_occurrences, options = {}
     end
   end
 end
-
-