From 824b3d1fa2f01aef8bb0a6b544876feb6292413b Mon Sep 17 00:00:00 2001
From: Savannah Albanez <savannah.albanez@sofwarellc.com>
Date: Wed, 5 Feb 2025 13:04:41 -0700
Subject: [PATCH] Add threaded Changelog to release message

Co-authored-by: Jim Gay <jim@saturnflyer.com>
---
 CHANGELOG.md           |  1 +
 lib/discharger/task.rb | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 84499cd..21faa0e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,3 +16,4 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 
 - Reset the production branch to the staging branch instead of rebasing.
+- Deploy slack message now threads the changelog for the release.
diff --git a/lib/discharger/task.rb b/lib/discharger/task.rb
index 72e890d..a874faa 100644
--- a/lib/discharger/task.rb
+++ b/lib/discharger/task.rb
@@ -37,6 +37,8 @@ def self.create(name = :release, tasker: Rake::Task, &block)
     attr_accessor :commit_identifier
     attr_accessor :pull_request_url
 
+    attr_reader :last_message_ts
+
     # Reissue settings
     attr_accessor(
       *Reissue::Task.instance_methods(false).reject { |method|
@@ -146,6 +148,11 @@ def define
           ["git push origin v#{current_version}"]
         ) do
           tasker["#{name}:slack"].invoke("Released #{app_name} #{current_version} to production.", release_message_channel, ":chipmunk:")
+          if last_message_ts.present?
+            text = File.read(Rails.root.join(changelog_file))
+            tasker["#{name}:slack"].reenable
+            tasker["#{name}:slack"].invoke(text, release_message_channel, ":log:", last_message_ts)
+          end
           syscall ["git checkout #{working_branch}"]
         end
 
@@ -209,7 +216,7 @@ def define
         end
 
         desc "Send a message to Slack."
-        task :slack, [:text, :channel, :emoji] => :environment do |_, args|
+        task :slack, [:text, :channel, :emoji, :ts] => :environment do |_, args|
           args.with_defaults(
             channel: release_message_channel,
             emoji: nil
@@ -217,9 +224,11 @@ def define
           client = Slack::Web::Client.new
           options = args.to_h
           options[:icon_emoji] = options.delete(:emoji) if options[:emoji]
+          options[:thread_ts] = options.delete(:ts) if options[:ts]
 
           sysecho "Sending message to Slack:".bg(:green).black + " #{args[:text]}"
           result = client.chat_postMessage(**options)
+          instance_variable_set(:@last_message_ts, result["ts"])
           sysecho %(Message sent: #{result["ts"]})
         end