#
# Cookbook Name:: ruby_rbenv
# Provider:: script
#
# Author:: Fletcher Nichol <fnichol@nichol.ca>
#
# Copyright 2011, 2014, Fletcher Nichol
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

def whyrun_supported?
  true
end

use_inline_resources

provides :rbenv_script

include Chef::Rbenv::ScriptHelpers

action :run do
  set_updated { run_script }
end

def run_script
  script_code        = build_script_code
  script_environment = build_script_environment

  script new_resource.name do
    interpreter 'bash'
    code script_code
    user new_resource.user if new_resource.user
    creates new_resource.creates if new_resource.creates
    cwd new_resource.cwd if new_resource.cwd
    group new_resource.group if new_resource.group
    returns new_resource.returns if new_resource.returns
    timeout new_resource.timeout if new_resource.timeout
    umask new_resource.umask if new_resource.umask

    environment(script_environment)
  end
end

def build_script_code
  script = []
  script << %(export RBENV_ROOT="#{rbenv_root}")
  script << %(export PATH="${RBENV_ROOT}/bin:$PATH")
  script << %{eval "$(rbenv init -)"}
  if new_resource.rbenv_version
    script << %(export RBENV_VERSION="#{new_resource.rbenv_version}")
  end
  script << new_resource.code
  script.join("\n").concat("\n")
end

def build_script_environment
  script_env = { 'RBENV_ROOT' => rbenv_root }

  script_env.merge!(new_resource.environment) if new_resource.environment

  if new_resource.path
    script_env.merge!('PATH' => "#{new_resource.path.join(':')}:#{ENV['PATH']}")
  end

  if new_resource.user
    script_env.merge!('USER' => new_resource.user, 'HOME' => user_home)
  end

  script_env
end