chore: Provider APIs for SMS Channel - Bandwidth (#3889)

fixes: #3888

app/models/channel/sms.rb

@@ -0,0 +1,81 @@
+# == Schema Information
+#
+# Table name: channel_sms
+#
+#  id              :bigint           not null, primary key
+#  phone_number    :string           not null
+#  provider        :string           default("default")
+#  provider_config :jsonb
+#  created_at      :datetime         not null
+#  updated_at      :datetime         not null
+#  account_id      :integer          not null
+#
+# Indexes
+#
+#  index_channel_sms_on_phone_number  (phone_number) UNIQUE
+#
+
+class Channel::Sms < ApplicationRecord
+  include Channelable
+
+  self.table_name = 'channel_sms'
+  EDITABLE_ATTRS = [:phone_number, { provider_config: {} }].freeze
+
+  validates :phone_number, presence: true, uniqueness: true
+  # before_save :validate_provider_config
+
+  def name
+    'Sms'
+  end
+
+  # all this should happen in provider service . but hack mode on
+  def api_base_path
+    'https://messaging.bandwidth.com/api/v2'
+  end
+
+  # Extract later into provider Service
+  def send_message(phone_number, message)
+    if message.attachments.present?
+      send_attachment_message(phone_number, message)
+    else
+      send_text_message(phone_number, message.content)
+    end
+  end
+
+  def send_text_message(contact_number, message)
+    response = HTTParty.post(
+      "#{api_base_path}/users/#{provider_config['account_id']}/messages",
+      basic_auth: bandwidth_auth,
+      headers: { 'Content-Type' => 'application/json' },
+      body: {
+        'to' => contact_number,
+        'from' => phone_number,
+        'text' => message,
+        'applicationId' => provider_config['application_id']
+      }.to_json
+    )
+
+    response.success? ? response.parsed_response['id'] : nil
+  end
+
+  private
+
+  def send_attachment_message(phone_number, message)
+    # fix me
+  end
+
+  def bandwidth_auth
+    { username: provider_config['api_key'], password: provider_config['api_secret'] }
+  end
+
+  # Extract later into provider Service
+  # let's revisit later
+  def validate_provider_config
+    response = HTTParty.post(
+      "#{api_base_path}/users/#{provider_config['account_id']}/messages",
+      basic_auth: bandwidth_auth,
+      headers: { 'Content-Type': 'application/json' }
+    )
+    errors.add(:provider_config, 'error setting up') unless response.success?
+  end
+end

app/models/channel/whatsapp.rb

@@ -149,6 +149,6 @@ class Channel::Whatsapp < ApplicationRecord
         url: "#{ENV['FRONTEND_URL']}/webhooks/whatsapp/#{phone_number}"
       }.to_json
     )
-    errors.add(:bot_token, 'error setting up the webook') unless response.success?
+    errors.add(:provider_config, 'error setting up the webook') unless response.success?
   end
 end