trabajo-afectivo/app/models/channel/email_build.rb

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# Copyright (C) 2012-2016 Zammad Foundation, http://zammad-foundation.org/
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module Channel::EmailBuild
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=begin
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mail = Channel::EmailBuild.build(
from: 'sender@example.com',
to: 'recipient@example.com',
body: 'somebody with some text',
content_type: 'text/plain',
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)
=end
def self.build(attr, notification = false)
mail = Mail.new
# set organization
organization = Setting.get('organization')
if organization
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mail['Organization'] = organization.to_s
end
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# notification
if notification
attr['X-Loop'] = 'yes'
attr['Precedence'] = 'bulk'
attr['Auto-Submitted'] = 'auto-generated'
attr['X-Auto-Response-Suppress'] = 'All'
end
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attr['X-Powered-By'] = 'Zammad - Helpdesk/Support (https://zammad.org/)'
attr['X-Mailer'] = 'Zammad Mail Service'
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# set headers
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attr.each do |key, value|
next if key.to_s == 'attachments'
next if key.to_s == 'body'
next if key.to_s == 'content_type'
mail[key.to_s] = if value && value.class != Array
value.to_s
else
value
end
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end
# add html part
if attr[:content_type] && attr[:content_type] == 'text/html'
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html_alternative = Mail::Part.new do
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content_type 'text/html; charset=UTF-8'
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# complete check
html_document = Channel::EmailBuild.html_complete_check(attr[:body])
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body html_document
end
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# generate plain part
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attr[:body] = attr[:body].html2text
end
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# add plain text part
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text_alternative = Mail::Part.new do
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content_type 'text/plain; charset=UTF-8'
body attr[:body]
end
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# build email without any attachments
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if !html_alternative && attr[:attachments].blank?
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mail.content_type 'text/plain; charset=UTF-8'
mail.body attr[:body]
return mail
end
# build email with attachments
alternative_bodies = Mail::Part.new { content_type 'multipart/alternative' }
alternative_bodies.add_part text_alternative
if html_alternative
html_container = Mail::Part.new { content_type 'multipart/related' }
html_container.add_part html_alternative
# place to add inline attachments related to html alternative
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attr[:attachments]&.each do |attachment|
next if attachment.class == Hash
next if attachment.preferences['Content-ID'].blank?
attachment = Mail::Part.new do
content_type attachment.preferences['Content-Type']
content_id "<#{attachment.preferences['Content-ID']}>"
content_disposition attachment.preferences['Content-Disposition'] || 'inline'
content_transfer_encoding 'binary'
body attachment.content.force_encoding('BINARY')
end
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html_container.add_part attachment
end
alternative_bodies.add_part html_container
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end
mail.add_part alternative_bodies
# add attachments
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attr[:attachments]&.each do |attachment|
if attachment.class == Hash
attachment['content-id'] = nil
mail.attachments[attachment[:filename]] = attachment
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else
next if attachment.preferences['Content-ID'].present?
filename = attachment.filename
encoded_filename = Mail::Encodings.decode_encode filename, :encode
disposition = attachment.preferences['Content-Disposition'] || 'attachment'
content_type = attachment.preferences['Content-Type'] || attachment.preferences['Mime-Type'] || 'application/octet-stream'
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mail.attachments[attachment.filename] = {
content_disposition: "#{disposition}; filename=\"#{encoded_filename}\"",
content_type: "#{content_type}; filename=\"#{encoded_filename}\"",
content: attachment.content
}
end
end
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mail
end
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=begin
quoted_in_one_line = Channel::EmailBuild.recipient_line('Somebody @ "Company"', 'some.body@example.com')
returns
'"Somebody @ \"Company\"" <some.body@example.com>'
=end
def self.recipient_line(realname, email)
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return "#{realname} <#{email}>" if realname.match?(/^[A-z]+$/i)
"\"#{realname.gsub('"', '\"')}\" <#{email}>"
end
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=begin
Check if string is a complete html document. If not, add head and css styles.
full_html_document_string = Channel::EmailBuild.html_complete_check(html_string)
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=end
def self.html_complete_check(html)
# apply mail client fixes
html = Channel::EmailBuild.html_mail_client_fixes(html)
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return html if html.match?(/<html>/i)
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html_email_body = File.read(Rails.root.join('app', 'views', 'mailer', 'application_wrapper.html.erb').to_s)
html_email_body.gsub!('###html_email_css_font###', Setting.get('html_email_css_font'))
# use block form because variable html could contain backslashes and e. g. '\1' that
# must not be handled as back-references for regular expressions
html_email_body.sub('###html###') { html }
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end
=begin
Add/change markup to display html in any mail client nice.
html_string_with_fixes = Channel::EmailBuild.html_mail_client_fixes(html_string)
=end
def self.html_mail_client_fixes(html)
# https://github.com/martini/zammad/issues/165
new_html = html.gsub('<blockquote type="cite">', '<blockquote type="cite" style="border-left: 2px solid blue; margin: 0 0 16px; padding: 8px 12px 8px 12px;">')
new_html.gsub!(/<p>/mxi, '<p style="margin: 0;">')
new_html.gsub!(%r{</?hr>}mxi, '<hr style="margin-top: 6px; margin-bottom: 6px; border: 0; border-top: 1px solid #dfdfdf;">')
new_html
end
end