#!/usr/bin/env ruby

require 'rubygems'
require 'gitscape'
require "optparse"


OVERVIEW = <<-EOS
gitscape   perform git-related promotions in a consistent manner.

The following actions are supported.

  bugfix_start <branch-name>      Creates a branch off master called feature/<branch-name>
  feature_start <branch-name>     Creates a branch off the latest release branch called 
                                  bugfix/<branch-name>
  hotfix_start <branch-name>      Creates a branch off live called hotfix/<branch-name>
  feature_finish [<branch-name>]  Merges the branch feature/<branch-name> into the master
                                  branch. 
                                  When -u is specified, the master branch is copied to its
                                  corresponding tracking branch (staging).
                                  If <branch-name> is omitted and you are already on a
                                  feature branch, it is used.
  bugfix_finish [<branch-name>]   Merges the branch bugfix/<branch-name> into master and
                                  optionally into the current release branch (when 
                                  --qa is specified).
                                  When -u is specified, any updated branch is copied to its
                                  corresponding tracking branch (master to staging, the 
                                  current release branch to qa).
                                  If <branch-name> is omitted and you are already on a
                                  bugfix branch, it is used.
  hotfix_finish [<branch-name>]   Merges the branch hotfix/<branch-name> into master, 
                                  optionally into the current branch (when --qa or --live is
                                  specified) and to the live branch (when --live is specified).
                                  When -u is specified, any updated branch is copied to its
                                  corresponding tracking branch (master to staging, the 
                                  current release branch to qa).
                                  If <branch-name> is omitted and you are already on a
                                  hotfix branch, it is used.
  release_start                   Branches master, incrementing the release number to create
                                  a new release branch, release/i<version+1>. The release
                                  branch is forced to the qa branch.
                                  ** These actions update the origin server. **
  release_finish                  After performing several validations, it merges the latest
                                  release branch into live and master. Tags are created that
                                  facilitate a rollback.
                                  ** These actions update the origin server. **
EOS

# Parse option overrides.
options = {}

op = OptionParser.new do |op|
  op.banner = 'Usage: gitscape [action] [options]'
  op.separator('Options:')
  
  op.on '--[no-]trace', 'Verbose output for debugging' do |bool|
    options[:trace] = bool
  end
  
  op.on '-h', '--help', 'Show a list of actions' do
    puts OVERVIEW
    exit
  end

  op.on '-p', '--[no-]push', 'Whether or not to push changes to origin' do |bool|
    options[:push] = bool
  end
  
  op.on '-u', '--[no-]update-env', 'Whether to update environment branches when their development branch is updated' do |bool|
    options[:update_env] = bool
  end

  op.on '-e', '--env-depth=ENV', [:staging, :qa, :live], 'The level of environments to push changes to' do |depth|
    options[:env_depth] = depth
  end
  
  op.on '--qa', 'Sets the environment depth for the command to the qa environment' do
    options[:env_depth] = :qa
  end
  
  op.on '--live', 'Sets the environment depth for the command to the live environment' do
    options[:env_depth] = :live
  end
end

op.parse!(ARGV)

if ARGV.size < 1
  puts OVERVIEW
  exit
else
  command_name = ARGV[0]
  case command_name
    when "bugfix_start", "feature_start", "hotfix_start"
      branch_name = ARGV[1]
      Gitscape::Base.new.send command_name, branch_name, options
    when "bugfix_finish", "feature_finish", "hotfix_finish"
      branch_name = ARGV[1]
      Gitscape::Base.new.send command_name, branch_name, options
    when "release_start"
      Gitscape::Base.new.release_start options
    when "release_finish"
      Gitscape::Base.new.release_finish options
    when "tag_cleanup"
      Gitscape::Base.new.tag_cleanup options
    else
      puts "Unknown command: #{command_name}"
  end
end