class UserMailer < ActionMailer::Base
  helper :application # textilizable
  
  default :from => "from@example.com"

  # Subject can be set in your I18n file at config/locales/en.yml
  # with the following lookup:
  #
  #   en.user_mailer.test_mail.subject
  #
  def test_mail(user)
    @greeting = "Hi"

    to = "#{user.name} <#{user.mail}>"
    
    mail :to => to, :subject => 'Test'
  end
  
  def issue_added(user, issue)  
    @issue = issue
    @user  = user
    
    headers["X-OpenProject-Project"] = issue.project.identifier
    headers["X-OpenProject-Issue-Id"] = issue.id
    headers["X-OpenProject-Issue-Author"] = issue.author.login
    headers["X-OpenProject-Type"] = 'Issue'

    assigned_to_header issue.assigned_to
    
    #message_id issue

    to      = user.mail

    locale = user.language.presence || I18n.default_locale # || Setting.default_language

    I18n.with_locale(locale) do
      subject = "[#{issue.project.name} - #{issue.tracker.name} ##{issue.id}] (#{issue.status.name}) #{issue.subject}"

      mail :to => to, :subject => subject
    end
  end
  
  def issue_updated(user, journal)
    @user    = user
    @journal = journal
    @issue   = journal.journaled.reload
    
    headers["X-OpenProject-Project"] = @issue.project.identifier
    headers["X-OpenProject-Issue-Id"] = @issue.id
    headers["X-OpenProject-Issue-Author"] = @issue.author.login
    headers["X-OpenProject-Type"] = 'Issue'

    assigned_to_header @issue.assigned_to
    
    to = user.mail

    #message_id journal
    #references issue
    #@author = journal.user

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject =  "[#{@issue.project.name} - #{@issue.tracker.name} ##{@issue.id}] "
      subject << "(#{@issue.status.name}) " if journal.details['status_id']
      subject << @issue.subject

      mail :to => to, :subject => subject
    end
  end
  
  def password_lost(token)
    @token = token
    @reset_password_url = url_for(:controller => :account,
                                  :action     => :lost_password,
                                  :token      => @token.value)
    
    headers["X-OpenProject-Type"] = 'Account'
    
    user = token.user

    to = user.mail

    locale = user.language.presence || I18n.default_locale  

    I18n.with_locale(locale) do
      subject = t(:mail_subject_lost_password, :value => Setting.app_title)      

      mail :to => to, :subject => subject
    end
  end

  def news_added(user, news)
    @news = news

    headers["X-OpenProject-Project"] = news.project.identifier
    headers["X-OpenProject-Type"] = "News"

    #message_id news

    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = "[#{news.project.name}] #{t(:label_news)}: #{news.title}"

      mail :to => to, :subject => subject
    end
  end

  def user_signed_up(token)
    @token = token
    @activation_url = url_for(:controller => :account,
                              :action     => :activate,
                              :token      => @token.value)

    headers["X-OpenProject-Type"] = "Account"

    user = token.user

    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = t(:mail_subject_register, :value => Setting.app_title)

      mail :to => to, :subject => subject
    end
  end

  def news_comment_added(user, comment)
    @comment = comment
    @news = @comment.commented

    headers["X-OpenProject-Project"] = @news.project.identifier

    #message_id comment
    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = "Re: [#{@news.project.name}] #{t(:label_news)}: #{@news.title}"

      mail :to => to, :subject => subject
    end
  end

  def wiki_content_added(user, wiki_content)
    @wiki_content = wiki_content

    headers["X-OpenProject-Project"] = @wiki_content.project.identifier
    headers["X-OpenProject-Wiki-Page-Id"] = @wiki_content.page.id
    headers["X-OpenProject-Type"] = "Wiki"

    # message_id wiki_content
    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = "[#{wiki_content.project.name}] #{t(:mail_subject_wiki_content_added, :id => wiki_content.page.pretty_title)}"

      mail :to => to, :subject => subject
    end
  end

  def wiki_content_updated(user, wiki_content)
    @wiki_content  = wiki_content
    @wiki_diff_url = url_for(:controller => :wiki,
                             :action     => :diff,
                             :project_id => wiki_content.project,
                             :id         => wiki_content.page.title,
                             :version    => wiki_content.version)

    headers["X-OpenProject-Project"] = @wiki_content.project.identifier
    headers["X-OpenProject-Wiki-Page-Id"] = @wiki_content.page.id
    headers["X-OpenProject-Type"] = "Wiki"

    #message_id wiki_content
    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = "[#{wiki_content.project.name}] #{t(:mail_subject_wiki_content_updated, :id => wiki_content.page.pretty_title)}"

      mail :to => to, :subject => subject
    end
  end

  def message_posted(user, message)
    @message     = message
    @message_url = url_for(:controller => :messages,
                           :action     => :show,
                           :board_id   => @message.board,
                           :id         => @message.root,
                           :r          => @message,
                           :anchor     => "message-#{@message.id}")

    headers["X-OpenProject-Project"] = @message.project.identifier
    headers["X-OpenProject-Topic-Id"] = message.parent_id || message.id
    headers["X-OpenProject-Type"] = "Forum"

    #message_id message
    #references message.parent unless message.parent.nil?
    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = "[#{@message.board.project.name} - #{@message.board.name} - msg#{@message.root.id}] #{@message.subject}"

      mail :to => to, :subject => subject
    end
  end

  def document_added(user, document)
    @document = document

    headers["X-OpenProject-Project"] = @document.project.identifier
    headers["X-OpenProject-Type"] = "Document"

    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = "[#{@document.project.name}] #{t(:label_document_new)}: #{@document.title}"

      mail :to => to, :subject => subject
    end
  end

  def account_activated(user)
    @user = user

    headers["X-OpenProject-Type"] = "Account"

    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = t(:mail_subject_register, :value => Setting.app_title)

      mail :to => to, :subject => subject
    end
  end

  def account_information(user, password)
    @user     = user
    @password = password

    headers["X-OpenProject-Type"] = "Account"

    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = t(:mail_subject_register, :value => Setting.app_title)

      mail :to => to, :subject => subject
    end
  end

  def account_activation_requested(admin, user)
    @user           = user
    @activation_url = url_for(:controller => :users,
                              :action     => :index,
                              :status     => User::STATUS_REGISTERED,
                              :sort_key   => :created_on,
                              :sort_order => :desc)

    headers["X-OpenProject-Type"] = "Account"

    to = admin.mail

    locale = admin.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = t(:mail_subject_account_activation_request, :value => Setting.app_title)

      mail :to => to, :subject => subject
    end
  end

  def attachments_added(user, attachments)
    @attachments = attachments

    container = attachments.first.container

    headers["X-OpenProject-Project"] = container.project.identifier
    headers["X-OpenProject-Type"] = "Attachment"

    case container.class.name
    when 'Project'
      @added_to     = "#{t(:label_project)}: #{container}"
      @added_to_url = url_for(:controller => 'files', :action => 'index', :project_id => container)
    when 'Version'
      @added_to     = "#{t(:label_version)}: #{container.name}"
      @added_to_url = url_for(:controller => 'files', :action => 'index', :project_id => container.project)
    when 'Document'
      @added_to     = "#{t(:label_document)}: #{container.title}"
      @added_to_url = url_for(:controller => 'documents', :action => 'show', :id => container.id)
    end

    to = user.mail

    locale = user.language.presence || I18n.default_locale

    I18n.with_locale(locale) do
      subject = "[#{container.project.name}] #{t(:label_attachment_new)}"

      mail :to => to, :subject => subject
    end
  end

private

  def assigned_to_header(user)
    headers["X-OpenProject-Issue-Assignee"] = user.login if user
  end
end