require_relative 'string.rb'

  class Git
    def self.remote
      begin
        `git remote -v show`.lines.first.strip.match(/github\.com[\/|:](.+)\.git/)[1]
      rescue
        $stderr.puts 'Unable to retrieve slug from >> git remote -v show'
        exit 1
      end
    end
    def self.repo
      remote
    end
    def self.branch
      `git rev-parse --abbrev-ref HEAD`.strip
    end
    def self.tag
      (`git describe --tags --match 'v*' --abbrev=0 2>/dev/null` || 'HEAD').strip
    end
    def self.clean_tag(tag=self.tag)
      tag.strip.sub('v','').split(/[\.,-]/).select { |e| e.is_number?}.first(3).join('.')
    end
    def self.commit_count
      `git rev-list --count HEAD`.to_i
    end
    def self.commit_count_since_tag(tag)
      `git rev-list --count #{tag}.. 2>/dev/null`.to_i
    end
    def self.installed?
      system 'git --version >>/dev/null 2>&1'
    end
    def self.parse_deploy(commitMessage)
      commands = %w(deploy DEPLOY force_deploy FORCE_DEPLOY).collect{ |x| "\\b#{x}\\b" }.join("|")
      re = Regexp.new(/<(#{commands}):?\s*(.*?)(?:>)/)
      deploy = commitMessage.scan(re).flatten.compact
      return !deploy[0].nil? && !deploy[0].empty?, deploy[1] || ''
    end
    def self.parse_crashlytics(commitMessage)
      return commitMessage.scan(/(c|C):(?<crashlytics>\d+)/).flatten.collect { |x| x.to_i }.uniq
    end
    def self.parse_sprintly(commitMessage)
      commands = %w(close closed closes finish finished finishes fix fixed fixes breaks unfixes reopen reopens re-open re-opens addresses re ref references refs start starts see).collect{ |x| "\\b#{x}\\b" }.join("|")
      prefixes = %w(task issue defect bug item ticket).collect{ |x| "\\b#{x}:\\b" }.join("|") + "|#"
      re = Regexp.new(/(?:#{commands})\s(?:#{prefixes})(\d+)/)
      return commitMessage.downcase.scan(re).flatten.collect{ |x| x.to_i }.uniq
    end
    def self.parse_commit_message(commitMessage)
      h = Hash.new
      deploy, message = self.parse_deploy(commitMessage)
      sprintly_tickets = self.parse_sprintly(commitMessage)
      crashlytics_ids = self.parse_crashlytics(commitMessage)
      h["deploy?"] = deploy
      h["message"] = message
      h["sprintly"] = sprintly_tickets
      h["crashlytics"] = crashlytics_ids
      return h
    end
    def self.commit_sha
      `git rev-parse HEAD`.strip
    end
    def self.commit_short_sha
      `git rev-parse --short HEAD`.strip
    end
  end