commit 6af34f3d351bf0d8902d07d5d5f1fb05f9935903
Author: Trevor Vallender <trevor@tsvallender.co.uk>
Date:   Mon Sep 25 11:10:44 2023 +0100

    Initial commit

diff --git a/.rubocop.yml b/.rubocop.yml
new file mode 100644
index 0000000..ee560cc
--- /dev/null
+++ b/.rubocop.yml
@@ -0,0 +1,30 @@
+AllCops:
+  NewCops: enable
+  Exclude:
+    - 'bin/*'
+    - 'db/migrate/*'
+    - 'db/schema.rb'
+
+Style/Documentation:
+  Enabled: false
+
+Style/StringLiterals:
+  EnforcedStyle: double_quotes
+
+Style/HashSyntax:
+  Enabled: false
+
+Style/SymbolArray:
+  Enabled: false
+
+Style/TrailingCommaInArguments:
+  EnforcedStyleForMultiline: consistent_comma
+
+Style/TrailingCommaInArrayLiteral:
+  EnforcedStyleForMultiline: consistent_comma
+
+Style/TrailingCommaInHashLiteral:
+  EnforcedStyleForMultiline: consistent_comma
+
+Style/WordArray:
+  Enabled: false
diff --git a/git-ticket.rb b/git-ticket.rb
new file mode 100755
index 0000000..ed4acfe
--- /dev/null
+++ b/git-ticket.rb
@@ -0,0 +1,91 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require "open3"
+require "thor"
+
+##
+# CLI interface to the GitTicket class below
+class GitTicketCli < Thor
+  desc "shas", "show SHAs for a given ticket ref"
+  def shas(ticket_ref)
+    git_ticket = GitTicket.new(ticket_ref)
+
+    git_ticket.shas.each { |sha| puts sha }
+  end
+
+  desc "commits", "show commits for a given ticket ref"
+  def commits(ticket_ref)
+    git_ticket = GitTicket.new(ticket_ref)
+
+    git_ticket.commit_messages.each { |message| puts "#{message}\n" }
+  end
+
+  desc "patches", "show patches for a given ticket ref"
+  def patches(ticket_ref)
+    git_ticket = GitTicket.new(ticket_ref)
+
+    git_ticket.patches.each { |patch| puts patch }
+  end
+end
+
+##
+# Provides an interface to the git commits related to a specific ticket
+class GitTicket
+  attr_reader :ticket
+  attr_accessor :git_command
+
+  ##
+  # Creates a new diff from all commits referencing a given ticket.
+  #
+  # @param [String] ticket_reference The ticket reference to use
+  # @param [String] diff_target The git reference to diff against.
+  def initialize(ticket_reference)
+    @ticket = ticket_reference
+    @git_command = "git -c color.ui=always" # So our output is colourised
+  end
+
+  ##
+  # Sets and returns the commit messages for each commit
+  # @return [Array<String>] The commit messages
+  def commit_messages
+    return @commit_messages if @commit_messages
+
+    @commit_messages = []
+    shas.each do |sha|
+      message, _status = Open3.capture2("#{git_command} show #{sha} -s")
+      @commit_messages.push(message)
+    end
+
+    @commit_messages
+  end
+
+  ##
+  # Sets and returns the patches for each commit.
+  #
+  # @return [Array<String>] The diffs
+  def patches
+    return @patches if @patches
+
+    @patches = []
+    shas.each do |sha|
+      patch, _status = Open3.capture2("#{git_command} show #{sha} --patch")
+      @patches.push(patch)
+    end
+
+    @patches
+  end
+  ##
+
+  # Sets and returns the commit SHAs referenced.
+  #
+  # @return [Array<String>] The commit SHAs
+  def shas
+    return @shas if @shas
+
+    @shas, _status = Open3.capture2("#{git_command} log --all --grep #{@ticket} --format=%H")
+    @shas = @shas.split("\n")
+  end
+end
+
+GitTicketCli.start