Scrape Clubhouse.io tickets from git logs.

pennant.rb

#!/usr/bin/env ruby
require 'optparse'

options = {
  repo: File.expand_path(`pwd`),
  verbose: false
}

parser = OptionParser.new do |opts|
  opts.banner = 'Usage: pennant.rb -p TAG_PATTERN'

  opts.on('-p', '--pattern TAG_PATTERN', 'Pattern to look up tags with') do |p|
    options[:pattern] = p
  end

  opts.on('-r', '--repo-path [PATH]', 'Path to Git repo to search through (current path will be used if not supplied)') do |r|
    options[:repo] = File.expand_path(r)
  end

  opts.on('-v', '--verbose', 'Print debug logging') do |d|
    options[:verbose] = d
  end
end

begin
  parser.parse!
  unless options[:repo] && options[:pattern]
    puts "Missing options!"
    puts parser.help
    exit 2
  end
rescue OptionParser::InvalidOption, OptionParser::MissingArgument => error
  puts error
  puts parser
  exit 2
end

full_repo = "#{options[:repo]}/.git"

previous_commit_command = "git --git-dir #{full_repo} tag -l #{options[:pattern]} --sort=-refname | head -n1"

previous_commitish = `#{previous_commit_command}`.chomp!
current_commitish = 'HEAD'

commits_command = "git --git-dir #{full_repo} log #{previous_commitish}...#{current_commitish}"
formatted_commits_command = "#{commits_command} --format=oneline"

if options[:verbose]
  puts "Running '#{previous_commit_command}' to determine previous Git marker..."
  puts "Found #{previous_commitish} as previous Git marker..."
  puts "Using #{current_commitish} as current Git marker..."
  puts "Running '#{commits_command}' to locate commits between commitish markers..."
  puts "----"
end

commits = `#{commits_command}`
formatted_commits = `#{formatted_commits_command}`

matches = commits.scan(/(ch[0-9]+)/).flatten.uniq
completed_stories = ""

for match in matches do
  story_url = "https://app.clubhouse.io/ando/story/#{match[2..-1]}"
  completed_stories += "* [#{story_url}](#{story_url})\n"
end

changelog = <<EOF
# Changelog from `#{previous_commitish}` to `#{current_commitish}`
\n## Clubhouse Tickets\n
#{completed_stories}
\n## All Commits\n
```
#{formatted_commits}
```
EOF

puts changelog