require 'rails_helper'

describe Facebook::SendOnFacebookService do
  subject(:send_reply_service) { described_class.new(message: message) }

  before do
    allow(Facebook::Messenger::Subscriptions).to receive(:subscribe).and_return(true)
    allow(bot).to receive(:deliver).and_return({ recipient_id: '1008372609250235', message_id: 'mid.1456970487936:c34767dfe57ee6e339' }.to_json)
    create(:message, message_type: :incoming, inbox: facebook_inbox, account: account, conversation: conversation)
  end

  let!(:account) { create(:account) }
  let(:bot) { class_double(Facebook::Messenger::Bot).as_stubbed_const }
  let!(:widget_inbox) { create(:inbox, account: account) }
  let!(:facebook_channel) { create(:channel_facebook_page, account: account) }
  let!(:facebook_inbox) { create(:inbox, channel: facebook_channel, account: account) }
  let!(:contact) { create(:contact, account: account) }
  let(:contact_inbox) { create(:contact_inbox, contact: contact, inbox: facebook_inbox) }
  let(:conversation) { create(:conversation, contact: contact, inbox: facebook_inbox, contact_inbox: contact_inbox) }

  describe '#perform' do
    context 'without reply' do
      it 'if message is private' do
        message = create(:message, message_type: 'outgoing', private: true, inbox: facebook_inbox, account: account)
        described_class.new(message: message).perform
        expect(bot).not_to have_received(:deliver)
      end

      it 'if inbox channel is not facebook page' do
        message = create(:message, message_type: 'outgoing', inbox: widget_inbox, account: account)
        expect { described_class.new(message: message).perform }.to raise_error 'Invalid channel service was called'
        expect(bot).not_to have_received(:deliver)
      end

      it 'if message is not outgoing' do
        message = create(:message, message_type: 'incoming', inbox: facebook_inbox, account: account)
        described_class.new(message: message).perform
        expect(bot).not_to have_received(:deliver)
      end

      it 'if message has an FB ID' do
        message = create(:message, message_type: 'outgoing', inbox: facebook_inbox, account: account, source_id: SecureRandom.uuid)
        described_class.new(message: message).perform
        expect(bot).not_to have_received(:deliver)
      end
    end

    context 'with reply' do
      it 'if message is sent from chatwoot and is outgoing' do
        message = create(:message, message_type: 'outgoing', inbox: facebook_inbox, account: account, conversation: conversation)
        described_class.new(message: message).perform
        expect(bot).to have_received(:deliver)
      end

      it 'raise and exception to validate access token' do
        message = create(:message, message_type: 'outgoing', inbox: facebook_inbox, account: account, conversation: conversation)
        allow(bot).to receive(:deliver).and_raise(Facebook::Messenger::FacebookError.new('message' => 'Error validating access token'))
        described_class.new(message: message).perform

        expect(facebook_channel.authorization_error_count).to eq(1)
        expect(message.reload.status).to eq('failed')
        expect(message.reload.external_error).to eq('Error validating access token')
      end

      it 'if message with attachment is sent from chatwoot and is outgoing' do
        message = build(:message, message_type: 'outgoing', inbox: facebook_inbox, account: account, conversation: conversation)
        attachment = message.attachments.new(account_id: message.account_id, file_type: :image)
        attachment.file.attach(io: Rails.root.join('spec/assets/avatar.png').open, filename: 'avatar.png', content_type: 'image/png')
        message.save!
        allow(attachment).to receive(:download_url).and_return('url1')
        described_class.new(message: message).perform
        expect(bot).to have_received(:deliver).with({
                                                      recipient: { id: contact_inbox.source_id },
                                                      message: { text: message.content },
                                                      messaging_type: 'MESSAGE_TAG',
                                                      tag: 'ACCOUNT_UPDATE'
                                                    }, { page_id: facebook_channel.page_id })
        expect(bot).to have_received(:deliver).with({
                                                      recipient: { id: contact_inbox.source_id },
                                                      message: {
                                                        attachment: {
                                                          type: 'image',
                                                          payload: {
                                                            url: 'url1'
                                                          }
                                                        }
                                                      },
                                                      messaging_type: 'MESSAGE_TAG',
                                                      tag: 'ACCOUNT_UPDATE'
                                                    }, { page_id: facebook_channel.page_id })
      end

      it 'if message is sent with multiple attachments' do
        message = build(:message, content: nil, message_type: 'outgoing', inbox: facebook_inbox, account: account, conversation: conversation)
        avatar = message.attachments.new(account_id: message.account_id, file_type: :image)
        avatar.file.attach(io: Rails.root.join('spec/assets/avatar.png').open, filename: 'avatar.png', content_type: 'image/png')
        sample = message.attachments.new(account_id: message.account_id, file_type: :image)
        sample.file.attach(io: Rails.root.join('spec/assets/sample.png').open, filename: 'sample.png', content_type: 'image/png')
        message.save!

        service = described_class.new(message: message)

        # Stub the send_to_facebook_page method on the service instance
        allow(service).to receive(:send_message_to_facebook)
        service.perform

        # Now you can set expectations on the stubbed method for each attachment
        expect(service).to have_received(:send_message_to_facebook).exactly(:twice)
      end

      it 'if message sent from chatwoot is failed' do
        message = create(:message, message_type: 'outgoing', inbox: facebook_inbox, account: account, conversation: conversation)
        allow(bot).to receive(:deliver).and_return({ error: { message: 'Invalid OAuth access token.', type: 'OAuthException', code: 190,
                                                              fbtrace_id: 'BLBz/WZt8dN' } }.to_json)
        described_class.new(message: message).perform
        expect(bot).to have_received(:deliver)
        expect(message.reload.status).to eq('failed')
      end
    end

    context 'when deliver_message fails' do
      let(:message) { create(:message, message_type: 'outgoing', inbox: facebook_inbox, account: account, conversation: conversation) }

      it 'handles JSON parse errors' do
        allow(bot).to receive(:deliver).and_return('invalid_json')
        described_class.new(message: message).perform

        expect(message.reload.status).to eq('failed')
        expect(message.external_error).to eq('Facebook was unable to process this request')
      end

      it 'handles timeout errors' do
        allow(bot).to receive(:deliver).and_raise(Net::OpenTimeout)
        described_class.new(message: message).perform

        expect(message.reload.status).to eq('failed')
        expect(message.external_error).to eq('Request timed out, please try again later')
      end

      it 'handles facebook error with code' do
        error_response = {
          error: {
            message: 'Invalid OAuth access token.',
            type: 'OAuthException',
            code: 190,
            fbtrace_id: 'BLBz/WZt8dN'
          }
        }.to_json
        allow(bot).to receive(:deliver).and_return(error_response)

        described_class.new(message: message).perform

        expect(message.reload.status).to eq('failed')
        expect(message.external_error).to eq('190 - Invalid OAuth access token.')
      end

      it 'handles successful delivery with message_id' do
        success_response = {
          message_id: 'mid.1456970487936:c34767dfe57ee6e339'
        }.to_json
        allow(bot).to receive(:deliver).and_return(success_response)

        described_class.new(message: message).perform

        expect(message.reload.source_id).to eq('mid.1456970487936:c34767dfe57ee6e339')
        expect(message.status).not_to eq('failed')
      end
    end

    context 'with input_select' do
      it 'if message with input_select is sent from chatwoot and is outgoing' do
        message = build(
          :message,
          message_type: 'outgoing',
          inbox: facebook_inbox,
          account: account,
          conversation: conversation,
          content_type: 'input_select',
          content_attributes: { 'items' => [{ 'title' => 'text 1', 'value' => 'value 1' }, { 'title' => 'text 2', 'value' => 'value 2' }] }
        )

        described_class.new(message: message).perform
        expect(bot).to have_received(:deliver).with({
                                                      recipient: { id: contact_inbox.source_id },
                                                      message: {
                                                        text: message.content,
                                                        quick_replies: [
                                                          { content_type: 'text', payload: 'text 1', title: 'text 1' },
                                                          { content_type: 'text', payload: 'text 2', title: 'text 2' }
                                                        ]
                                                      },
                                                      messaging_type: 'MESSAGE_TAG',
                                                      tag: 'ACCOUNT_UPDATE'
                                                    }, { page_id: facebook_channel.page_id })
      end
    end
  end
end