Chris@909: # Redmine - project management software
Chris@909: # Copyright (C) 2006-2011  Jean-Philippe Lang
Chris@909: #
Chris@909: # This program is free software; you can redistribute it and/or
Chris@909: # modify it under the terms of the GNU General Public License
Chris@909: # as published by the Free Software Foundation; either version 2
Chris@909: # of the License, or (at your option) any later version.
Chris@909: #
Chris@909: # This program is distributed in the hope that it will be useful,
Chris@909: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@909: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@909: # GNU General Public License for more details.
Chris@909: #
Chris@909: # You should have received a copy of the GNU General Public License
Chris@909: # along with this program; if not, write to the Free Software
Chris@909: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@909: 
Chris@909: class Setting < ActiveRecord::Base
Chris@909: 
Chris@909:   DATE_FORMATS = [
Chris@909: 	'%Y-%m-%d',
Chris@909: 	'%d/%m/%Y',
Chris@909: 	'%d.%m.%Y',
Chris@909: 	'%d-%m-%Y',
Chris@909: 	'%m/%d/%Y',
Chris@909: 	'%d %b %Y',
Chris@909: 	'%d %B %Y',
Chris@909: 	'%b %d, %Y',
Chris@909: 	'%B %d, %Y'
Chris@909:     ]
Chris@909: 
Chris@909:   TIME_FORMATS = [
Chris@909:     '%H:%M',
Chris@909:     '%I:%M %p'
Chris@909:     ]
Chris@909: 
Chris@909:   ENCODINGS = %w(US-ASCII
Chris@909:                   windows-1250
Chris@909:                   windows-1251
Chris@909:                   windows-1252
Chris@909:                   windows-1253
Chris@909:                   windows-1254
Chris@909:                   windows-1255
Chris@909:                   windows-1256
Chris@909:                   windows-1257
Chris@909:                   windows-1258
Chris@909:                   windows-31j
Chris@909:                   ISO-2022-JP
Chris@909:                   ISO-2022-KR
Chris@909:                   ISO-8859-1
Chris@909:                   ISO-8859-2
Chris@909:                   ISO-8859-3
Chris@909:                   ISO-8859-4
Chris@909:                   ISO-8859-5
Chris@909:                   ISO-8859-6
Chris@909:                   ISO-8859-7
Chris@909:                   ISO-8859-8
Chris@909:                   ISO-8859-9
Chris@909:                   ISO-8859-13
Chris@909:                   ISO-8859-15
Chris@909:                   KOI8-R
Chris@909:                   UTF-8
Chris@909:                   UTF-16
Chris@909:                   UTF-16BE
Chris@909:                   UTF-16LE
Chris@909:                   EUC-JP
Chris@909:                   Shift_JIS
Chris@909:                   CP932
Chris@909:                   GB18030
Chris@909:                   GBK
Chris@909:                   ISCII91
Chris@909:                   EUC-KR
Chris@909:                   Big5
Chris@909:                   Big5-HKSCS
Chris@909:                   TIS-620)
Chris@909: 
Chris@909:   cattr_accessor :available_settings
Chris@909:   @@available_settings = YAML::load(File.open("#{Rails.root}/config/settings.yml"))
Chris@909:   Redmine::Plugin.all.each do |plugin|
Chris@909:     next unless plugin.settings
Chris@909:     @@available_settings["plugin_#{plugin.id}"] = {'default' => plugin.settings[:default], 'serialized' => true}
Chris@909:   end
Chris@909: 
Chris@909:   validates_uniqueness_of :name
Chris@909:   validates_inclusion_of :name, :in => @@available_settings.keys
Chris@909:   validates_numericality_of :value, :only_integer => true, :if => Proc.new { |setting| @@available_settings[setting.name]['format'] == 'int' }
Chris@909: 
Chris@909:   # Hash used to cache setting values
Chris@909:   @cached_settings = {}
Chris@909:   @cached_cleared_on = Time.now
Chris@909: 
Chris@909:   def value
Chris@909:     v = read_attribute(:value)
Chris@909:     # Unserialize serialized settings
Chris@909:     v = YAML::load(v) if @@available_settings[name]['serialized'] && v.is_a?(String)
Chris@909:     v = v.to_sym if @@available_settings[name]['format'] == 'symbol' && !v.blank?
Chris@909:     v
Chris@909:   end
Chris@909: 
Chris@909:   def value=(v)
Chris@909:     v = v.to_yaml if v && @@available_settings[name] && @@available_settings[name]['serialized']
Chris@909:     write_attribute(:value, v.to_s)
Chris@909:   end
Chris@909: 
Chris@909:   # Returns the value of the setting named name
Chris@909:   def self.[](name)
Chris@909:     v = @cached_settings[name]
Chris@909:     v ? v : (@cached_settings[name] = find_or_default(name).value)
Chris@909:   end
Chris@909: 
Chris@909:   def self.[]=(name, v)
Chris@909:     setting = find_or_default(name)
Chris@909:     setting.value = (v ? v : "")
Chris@909:     @cached_settings[name] = nil
Chris@909:     setting.save
Chris@909:     setting.value
Chris@909:   end
Chris@909: 
Chris@909:   # Defines getter and setter for each setting
Chris@909:   # Then setting values can be read using: Setting.some_setting_name
Chris@909:   # or set using Setting.some_setting_name = "some value"
Chris@909:   @@available_settings.each do |name, params|
Chris@909:     src = <<-END_SRC
Chris@909:     def self.#{name}
Chris@909:       self[:#{name}]
Chris@909:     end
Chris@909: 
Chris@909:     def self.#{name}?
Chris@909:       self[:#{name}].to_i > 0
Chris@909:     end
Chris@909: 
Chris@909:     def self.#{name}=(value)
Chris@909:       self[:#{name}] = value
Chris@909:     end
Chris@909:     END_SRC
Chris@909:     class_eval src, __FILE__, __LINE__
Chris@909:   end
Chris@909: 
Chris@909:   # Helper that returns an array based on per_page_options setting
Chris@909:   def self.per_page_options_array
Chris@909:     per_page_options.split(%r{[\s,]}).collect(&:to_i).select {|n| n > 0}.sort
Chris@909:   end
Chris@909: 
Chris@909:   def self.openid?
Chris@909:     Object.const_defined?(:OpenID) && self[:openid].to_i > 0
Chris@909:   end
Chris@909: 
Chris@909:   # Checks if settings have changed since the values were read
Chris@909:   # and clears the cache hash if it's the case
Chris@909:   # Called once per request
Chris@909:   def self.check_cache
Chris@909:     settings_updated_on = Setting.maximum(:updated_on)
Chris@909:     if settings_updated_on && @cached_cleared_on <= settings_updated_on
Chris@909:       clear_cache
Chris@909:     end
Chris@909:   end
Chris@909:   
Chris@909:   # Clears the settings cache
Chris@909:   def self.clear_cache
Chris@909:     @cached_settings.clear
Chris@909:     @cached_cleared_on = Time.now
Chris@909:     logger.info "Settings cache cleared." if logger
Chris@909:   end
Chris@909: 
Chris@909: private
Chris@909:   # Returns the Setting instance for the setting named name
Chris@909:   # (record found in database or new record with default value)
Chris@909:   def self.find_or_default(name)
Chris@909:     name = name.to_s
Chris@909:     raise "There's no setting named #{name}" unless @@available_settings.has_key?(name)
Chris@909:     setting = find_by_name(name)
Chris@909:     unless setting
Chris@909:       setting = new(:name => name)
Chris@909:       setting.value = @@available_settings[name]['default']
Chris@909:     end
Chris@909:     setting
Chris@909:   end
Chris@909: end