feat: Ability to send attachments to telegram (#3108)

This feature allows the user to send and delete attachments in the telegram conversation.

Fixes #3037

spec/models/channel/telegram_spec.rb

@@ -0,0 +1,70 @@
+require 'rails_helper'
+
+RSpec.describe Channel::Telegram do
+  let(:telegram_channel) { create(:channel_telegram) }
+
+  context 'when a valid message and empty attachments' do
+    it 'send message' do
+      message = create(:message, message_type: :outgoing, content: 'test',
+                                 conversation: create(:conversation, inbox: telegram_channel.inbox, additional_attributes: { 'chat_id' => '123' }))
+
+      telegram_message_response = double
+
+      allow(telegram_message_response).to receive(:success?).and_return(true)
+      allow(telegram_message_response).to receive(:parsed_response).and_return({ 'result' => { 'message_id' => 'telegram_123' } })
+      allow(telegram_channel).to receive(:message_request).and_return(telegram_message_response)
+      expect(telegram_channel.send_message_on_telegram(message)).to eq('telegram_123')
+    end
+  end
+
+  context 'when a empty message and valid attachments' do
+    let(:message) do
+      create(:message, message_type: :outgoing, content: nil,
+                       conversation: create(:conversation, inbox: telegram_channel.inbox, additional_attributes: { 'chat_id' => '123' }))
+    end
+
+    it 'send image' do
+      telegram_attachment_response = double
+      attachment = message.attachments.new(account_id: message.account_id, file_type: :image)
+      attachment.file.attach(io: File.open(Rails.root.join('spec/assets/avatar.png')), filename: 'avatar.png', content_type: 'image/png')
+
+      allow(telegram_attachment_response).to receive(:success?).and_return(true)
+      allow(telegram_attachment_response).to receive(:parsed_response).and_return({ 'result' => [{ 'message_id' => 'telegram_456' }] })
+      allow(telegram_channel).to receive(:attachments_request).and_return(telegram_attachment_response)
+      expect(telegram_channel.send_message_on_telegram(message)).to eq('telegram_456')
+    end
+
+    it 'send document' do
+      telegram_attachment_response = double
+      attachment = message.attachments.new(account_id: message.account_id, file_type: :file)
+      attachment.file.attach(io: File.open(Rails.root.join('spec/assets/attachment.pdf')), filename: 'attachment.pdf',
+                             content_type: 'application/pdf')
+
+      allow(telegram_attachment_response).to receive(:success?).and_return(true)
+      allow(telegram_attachment_response).to receive(:parsed_response).and_return({ 'result' => [{ 'message_id' => 'telegram_456' }] })
+      allow(telegram_channel).to receive(:attachments_request).and_return(telegram_attachment_response)
+      expect(telegram_channel.send_message_on_telegram(message)).to eq('telegram_456')
+    end
+  end
+
+  context 'when a valid message and valid attachment' do
+    it 'send both message and attachment' do
+      message = create(:message, message_type: :outgoing, content: 'test',
+                                 conversation: create(:conversation, inbox: telegram_channel.inbox, additional_attributes: { 'chat_id' => '123' }))
+
+      telegram_message_response = double
+      telegram_attachment_response = double
+      attachment = message.attachments.new(account_id: message.account_id, file_type: :image)
+      attachment.file.attach(io: File.open(Rails.root.join('spec/assets/avatar.png')), filename: 'avatar.png', content_type: 'image/png')
+
+      allow(telegram_message_response).to receive(:success?).and_return(true)
+      allow(telegram_message_response).to receive(:parsed_response).and_return({ 'result' => { 'message_id' => 'telegram_456' } })
+      allow(telegram_attachment_response).to receive(:success?).and_return(true)
+      allow(telegram_attachment_response).to receive(:parsed_response).and_return({ 'result' => [{ 'message_id' => 'telegram_789' }] })
+
+      allow(telegram_channel).to receive(:message_request).and_return(telegram_message_response)
+      allow(telegram_channel).to receive(:attachments_request).and_return(telegram_attachment_response)
+      expect(telegram_channel.send_message_on_telegram(message)).to eq('telegram_789')
+    end
+  end
+end