#!/usr/bin/env ruby
require 'gli'
require 'gitlink'

include GLI::App

program_desc 'Allows you to quickly open your GitHub project in a web browser from the command line'

version Gitlink::VERSION

subcommand_option_handling :normal
arguments :strict

desc 'Name of remote'
arg_name 'remote_name'
default_value 'origin'
flag [:r, :remote]

desc 'Opens project\'s GitHub page'
command [:project, :p] do |c|
  c.action do |global_options,options,args|
    %x(open "#{@base_project_url}")
  end
end

desc 'Opens project\'s GitHub page to a specific branch'
arg_name 'Branch Name (leave blank for current)'
command [:branch, :b] do |c|
  c.action do |global_options,options,args|
    @current_branch = args.first if args.any?
    %x(open "#{@base_project_url}/tree/#{@current_branch}")
  end
end

desc 'Opens project\'s pull requests page'
command [:pulls, :pr] do |c|
  c.action do |global_options,options,args|
    %x(open "#{@base_project_url}/pulls")
  end
end

desc 'Open project\'s wiki page'
command [:wiki, :w] do |c|
  c.action do |global_options,options,args|
    %x(open "#{@base_project_url}/wiki")
  end
end

pre do |global,command,options,args|
  no_repo_error = "gitlink only works from within git repos"
  raise no_repo_error unless %x(git rev-parse --is-inside-work-tree)

  @remote = global[:remote]

  available_urls = %x(git remote -v)
  remotes = available_urls.split("\n").select do |remote|
    remote = remote.split("\t")
    remote[0] == @remote
  end

  raise "this project does not have any remotes" if remotes.empty?

  project_params = remotes.first.match(/\:(.*).git/)[1]
  @base_project_url = "http://github.com/#{project_params}"

  @current_branch = %x(git symbolic-ref -q HEAD | sed -e 's|^refs/heads/||')
  @current_branch.chomp!

  true
end

post do |global,command,options,args|
  # Post logic here
  # Use skips_post before a command to skip this
  # block on that command only
end

on_error do |exception|
  # Error logic here
  # return false to skip default error handling
  true
end

exit run(ARGV)