#!/usr/bin/env ruby
require 'yaml'
require 'pathname'
require 'rbconfig'
require 'optparse'
require 'ostruct'


# configure database.yml
# fetch required vendor plugins
# usage ./init.rb -d database -u user -p pass

opts = OpenStruct.new
proj_name = Pathname.new( "." ).realpath.basename.to_s

OptionParser.new { |o|
	o.banner = "Usage: #{$0} [options]"
	o.separator ""
	o.separator "Specific options:"
	opts.conf = "development"
	opts.adapter = "mysql"
	opts.host = "localhost"
	opts.database = "#{proj_name}_development"
	opts.user = "root"
	opts.pass = nil

	o.on( "-c S", "--config", "Select Configuration (development|test|production)" ){|conf|opts.conf = conf }
	o.on( "-a S", "--adapter", "Database Adapter" ){|adapter|opts.adapter = adapter }
	o.on( "-s S", "--shost", "Database Server Host" ){|host|opts.host = host }
	o.on( "-d S", "--database", "Configure Database" ){|db|opts.database = db }
	o.on( "-u S", "--user", "User Name" ){|user|opts.user = user }
	o.on( "-p S", "--password", "Password" ){|pass|opts.pass = pass }

}.parse!

dbpath = Pathname.new( "config/database.yml" )

if !dbpath.exist?
	File.open( dbpath, 'w' ) do |out|
		YAML.dump( {'development' => 
								 {
								 	'adapter' => 'mysql',
								 	'host' => 'localhost',
								 	'database' => "#{proj_name}_development",
									'username' => 'root',
									'password' => nil
								 }, 
								'test' => 
								 {
								 	'adapter' => 'mysql',
								 	'host' => 'localhost',
								 	'database' => "#{proj_name}_test",
									'username' => 'root',
									'password' => nil
								 },
								'production' => 
								 {
								 	'adapter' => 'mysql',
								 	'host' => 'localhost',
								 	'database' => "#{proj_name}_production",
									'username' => 'root',
									'password' => nil
								 }
							}, out )
	end
end

dbconf = YAML.load_file( dbpath )
if( !dbconf[opts.conf] )
	dbconf[opts.conf] = Hash.new
end
dbconf[opts.conf]['adapter'] = opts.adapter
dbconf[opts.conf]['host'] = opts.host
dbconf[opts.conf]['database'] = opts.database
dbconf[opts.conf]['username'] = opts.user
dbconf[opts.conf]['password'] = opts.pass

File.open( dbpath, 'w' ) do |out|
	YAML.dump( dbconf, out )
end