feat: Add support for sending CSAT surveys via templates (Whatsapp Twilio) (#13143)

Fixes
https://linear.app/chatwoot/issue/CW-6189/support-for-sending-csat-surveys-via-approved-whatsapp

---------

Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Vinay Keerthi <11478411+stonecharioteer@users.noreply.github.com>
Co-authored-by: iamsivin <iamsivin@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

app/services/csat_template_name_service.rb

@@ -0,0 +1,49 @@
+class CsatTemplateNameService
+  CSAT_BASE_NAME = 'customer_satisfaction_survey'.freeze
+
+  # Generates template names like: customer_satisfaction_survey_{inbox_id}_{version_number}
+
+  def self.csat_template_name(inbox_id, version = nil)
+    base_name = csat_base_name_for_inbox(inbox_id)
+    version ? "#{base_name}_#{version}" : base_name
+  end
+
+  def self.extract_version(template_name, inbox_id)
+    return nil if template_name.blank?
+
+    pattern = versioned_pattern_for_inbox(inbox_id)
+    match = template_name.match(pattern)
+    match ? match[1].to_i : nil
+  end
+
+  def self.generate_next_template_name(base_name, inbox_id, current_template_name)
+    return base_name if current_template_name.blank?
+
+    current_version = extract_version(current_template_name, inbox_id)
+    next_version = current_version ? current_version + 1 : 1
+    csat_template_name(inbox_id, next_version)
+  end
+
+  def self.matches_csat_pattern?(template_name, inbox_id)
+    return false if template_name.blank?
+
+    base_pattern = base_pattern_for_inbox(inbox_id)
+    versioned_pattern = versioned_pattern_for_inbox(inbox_id)
+
+    template_name.match?(base_pattern) || template_name.match?(versioned_pattern)
+  end
+
+  def self.csat_base_name_for_inbox(inbox_id)
+    "#{CSAT_BASE_NAME}_#{inbox_id}"
+  end
+
+  def self.base_pattern_for_inbox(inbox_id)
+    /^#{CSAT_BASE_NAME}_#{inbox_id}$/
+  end
+
+  def self.versioned_pattern_for_inbox(inbox_id)
+    /^#{CSAT_BASE_NAME}_#{inbox_id}_(\d+)$/
+  end
+
+  private_class_method :csat_base_name_for_inbox, :base_pattern_for_inbox, :versioned_pattern_for_inbox
+end