chore: Handle attachments in Whatsapp Channel (#3299)

send and receive attachments in 360Dialog WhatsApp channels

app/models/channel/telegram.rb

@@ -43,7 +43,7 @@ class Channel::Telegram < ApplicationRecord
     response = HTTParty.get("#{telegram_api_url}/getUserProfilePhotos", query: { user_id: user_id })
     return nil unless response.success?
 
-    photos = response.parsed_response['result']['photos']
+    photos = response.parsed_response.dig('result', 'photos')
     return if photos.blank?
 
     get_telegram_file_path(photos.first.last['file_id'])

app/models/channel/whatsapp.rb

@@ -36,15 +36,19 @@ class Channel::Whatsapp < ApplicationRecord
 
   # Extract later into provider Service
   def send_message(phone_number, message)
-    HTTParty.post(
-      "#{api_base_path}/messages",
-      headers: { 'D360-API-KEY': provider_config['api_key'], 'Content-Type': 'application/json' },
-      body: {
-        to: phone_number,
-        text: { body: message },
-        type: 'text'
-      }.to_json
-    )
+    if message.attachments.present?
+      send_attachment_message(phone_number, message)
+    else
+      send_text_message(phone_number, message)
+    end
+  end
+
+  def media_url(media_id)
+    "#{api_base_path}/media/#{media_id}"
+  end
+
+  def api_headers
+    { 'D360-API-KEY' => provider_config['api_key'], 'Content-Type' => 'application/json' }
   end
 
   def has_24_hour_messaging_window?
@@ -53,6 +57,36 @@ class Channel::Whatsapp < ApplicationRecord
 
   private
 
+  def send_text_message(phone_number, message)
+    HTTParty.post(
+      "#{api_base_path}/messages",
+      headers: { 'D360-API-KEY': provider_config['api_key'], 'Content-Type': 'application/json' },
+      body: {
+        to: phone_number,
+        text: { body: message.content },
+        type: 'text'
+      }.to_json
+    )
+  end
+
+  def send_attachment_message(phone_number, message)
+    attachment = message.attachments.first
+    type = %w[image audio video].include?(attachment.file_type) ? attachment.file_type : 'document'
+    attachment_url = attachment.file_url
+    HTTParty.post(
+      "#{api_base_path}/messages",
+      headers: { 'D360-API-KEY': provider_config['api_key'], 'Content-Type': 'application/json' },
+      body: {
+        'to' => phone_number,
+        'type' => type,
+        type.to_s => {
+          'link': attachment_url,
+          'caption': message.content
+        }
+      }.to_json
+    )
+  end
+
   # Extract later into provider Service
   def validate_provider_config
     response = HTTParty.post(