module CookieAlert

# File lib/cookie_alert.rb, line 27
def self.config
  @config
end

# File lib/cookie_alert.rb, line 7
def self.configure(&block)
  yield @config ||= CookieAlert::Configuration.new

  # Validate the configuration
  config.cookie_type                          = 'session'   unless ['session','fixed_duration','permanent'].include? config.cookie_type
  
  config.user_must_accept_cookie_use          = true        unless [true,false].include? config.user_must_accept_cookie_use
  config.use_secondary_alert = true        unless [true,false].include? config.use_secondary_alert
  
  config.max_alert_display_count              = 5           unless config.max_alert_display_count.present?       and  config.max_alert_display_count       > 2
  config.num_days_until_cookie_expires        = 60          unless config.num_days_until_cookie_expires.present? and  config.num_days_until_cookie_expires > 1
  
  config.cookie_name                    = config.cookie_name                     || '_we_use_cookies'
  config.cookie_value_text_separator    = config.cookie_value_text_separator     || "~~" 
  config.primary_alert_template         = config.primary_alert_template          || 'cookie_alert/cookies/primary_alert'
  config.secondary_alert_template       = config.secondary_alert_template        || 'cookie_alert/cookies/secondary_alert'
  config.js_acceptance_template         = config.js_acceptance_template          || 'cookie_alert/cookies/cookie_accepted'
end

# File lib/cookie_alert.rb, line 64
def display_cookie_alert
  # If the visitor has not seen the warning before
  # set a cookie recording the first view
  unless cookies.signed[CookieAlert.config.cookie_name.to_sym]
  
    cookie_alert_set_display_count_cookie 1
    cookie_alert_render_primary_alert

  else
  
    # If the warning has previously been accepted because the visitor has either clicked on the 'accept' link
    # or it has been displayed the required number of times
    if cookies.signed[CookieAlert.config.cookie_name.to_sym] == 'accepted'
    
      # Don't display the notice
      cookie_alert_render_nothing
    
    else
      
      # Retrieve the number of times the Alert has been displayed from the Cookie
      num_views = cookie_alert_get_view_count
        
      # MUST the Visitor accept the Cookie by clicking the link?
      unless CookieAlert.config.user_must_accept_cookie_use
        
        # is this past the max number of Warnings to display?
        if num_views == CookieAlert.config.max_alert_display_count

          # The visitor has accepted through usage, so set the Cookie to 'accepted'
          cookie_alert_set_accepted_cookie

          # Don't display the notive
          cookie_alert_render_nothing
        
        else

          # Increment the view count & display the warning
          cookie_alert_set_display_count_cookie num_views + 1
          cookie_alert_render_primary_alert

        end

      else

        # The user MUST accept the cookie use and hasn't done so yet
        # Do we display the Full Alert of the Reminder?
        if CookieAlert.config.use_secondary_alert == true and num_views >= CookieAlert.config.max_alert_display_count

          # Display the reminder
          cookie_alert_render_secondary_alert
        
        else

          # Display the full alert
          cookie_alert_set_display_count_cookie num_views + 1
          cookie_alert_render_primary_alert

        end
      end
    end
  end
end

# File lib/cookie_alert.rb, line 178
def cookie_alert_get_current_url
  cookies.signed[CookieAlert.config.cookie_name.to_sym].split(CookieAlert.config.cookie_value_text_separator)[1]
end

# File lib/cookie_alert.rb, line 173
def cookie_alert_get_view_count
  cookies.signed[CookieAlert.config.cookie_name.to_sym].split(CookieAlert.config.cookie_value_text_separator)[0].to_i
end

# File lib/cookie_alert.rb, line 168
def cookie_alert_render_nothing
  render partial: "cookie_alert/cookies/no_response"
end

# File lib/cookie_alert.rb, line 158
def cookie_alert_render_primary_alert
  render partial: CookieAlert.config.primary_alert_template
end

# File lib/cookie_alert.rb, line 163
def cookie_alert_render_secondary_alert
  render partial: CookieAlert.config.secondary_alert_template
end

# File lib/cookie_alert.rb, line 138
def cookie_alert_set_accepted_cookie
   cookie_alert_set_cookie "accepted"
end

# File lib/cookie_alert.rb, line 144
def cookie_alert_set_cookie cookie_value=''
  if CookieAlert.config.cookie_type == 'permanent'
    # Set a permanent cookie
    cookies.permanent.signed[CookieAlert.config.cookie_name.to_sym] = cookie_value
  elsif CookieAlert.config.cookie_type == 'fixed_duration'
    # Set a fixed duration cookie
    cookies.signed[CookieAlert.config.cookie_name.to_sym] = { value: cookie_value, expires: CookieAlert.config.num_days_until_cookie_expires.days.from_now }
  else
    # Set a session cookie
    cookies.signed[CookieAlert.config.cookie_name.to_sym] = cookie_value
  end
end

# File lib/cookie_alert.rb, line 133
def cookie_alert_set_display_count_cookie num_views
  cookie_alert_set_cookie num_views.to_s << CookieAlert.config.cookie_value_text_separator << request.fullpath
end