76 lines
2.9 KiB
Ruby
76 lines
2.9 KiB
Ruby
class Whatsapp::SendOnWhatsappService < Base::SendOnChannelService
|
|
private
|
|
|
|
def channel_class
|
|
Channel::Whatsapp
|
|
end
|
|
|
|
def perform_reply
|
|
# can reply checks if 24 hour limit has passed.
|
|
if message.conversation.can_reply?
|
|
send_on_whatsapp
|
|
else
|
|
send_template_message
|
|
end
|
|
end
|
|
|
|
def send_template_message
|
|
name, namespace, lang_code, processed_parameters = processable_channel_message_template
|
|
return if name.blank?
|
|
|
|
message_id = channel.send_template(message.conversation.contact_inbox.source_id, {
|
|
name: name,
|
|
namespace: namespace,
|
|
lang_code: lang_code,
|
|
parameters: processed_parameters
|
|
})
|
|
message.update!(source_id: message_id) if message_id.present?
|
|
end
|
|
|
|
def processable_channel_message_template
|
|
# see if we can match the message content to a template
|
|
# An example template may look like "Your package has been shipped. It will be delivered in {{1}} business days.
|
|
# We want to iterate over these templates with our message body and see if we can fit it to any of the templates
|
|
# Then we use regex to parse the template varibles and convert them into the proper payload
|
|
channel.message_templates.each do |template|
|
|
match_obj = template_match_object(template)
|
|
next if match_obj.blank?
|
|
|
|
# we have a match, now we need to parse the template variables and convert them into the wa recommended format
|
|
processed_parameters = match_obj.captures.map { |x| { type: 'text', text: x } }
|
|
|
|
# no need to look up further end the search
|
|
return [template['name'], template['namespace'], template['language'], processed_parameters]
|
|
end
|
|
[nil, nil, nil, nil]
|
|
end
|
|
|
|
def template_match_object(template)
|
|
body_object = validated_body_object(template)
|
|
return if body_object.blank?
|
|
|
|
template_match_regex = build_template_match_regex(body_object['text'])
|
|
message.content.match(template_match_regex)
|
|
end
|
|
|
|
def build_template_match_regex(template_text)
|
|
# Converts the whatsapp template to a comparable regex string to check against the message content
|
|
# the variables are of the format {{num}} ex:{{1}}
|
|
template_match_string = "^#{template_text.gsub(/{{\d}}/, '(.*)')}$"
|
|
Regexp.new template_match_string
|
|
end
|
|
|
|
def validated_body_object(template)
|
|
# we don't care if its not approved template
|
|
return if template['status'] != 'approved'
|
|
|
|
# we only care about text body object in template. if not present we discard the template
|
|
# we don't support other forms of templates
|
|
template['components'].find { |obj| obj['type'] == 'BODY' && obj.key?('text') }
|
|
end
|
|
|
|
def send_on_whatsapp
|
|
message_id = channel.send_message(message.conversation.contact_inbox.source_id, message)
|
|
message.update!(source_id: message_id) if message_id.present?
|
|
end
|
|
end
|