#--

# Copyright 2014 by MTN Sattelite Communications
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#++

require 'fileutils'
require 'json'

module ZergrushCF
    class Renderer

        def initialize(hive_location, task_name, task_hash)
            @vm = task_hash["vm"]
            @name = task_name
            @template = task_hash["vm"]["driver"]["driveroptions"][0]["template"]
            @template_file = task_hash["vm"]["driver"]["driveroptions"][0]["template_file"]
            @driver = task_hash["vm"]["driver"]["drivertype"] 
            @hive_location = hive_location
        end

        def render
            puts ("Rendering driver templates...")

            abort("ERROR: Can't specify both template and template_file") unless @template == nil || @template_file == nil
            abort("ERROR: Must specify template or template_file") unless @template != nil || @template_file != nil

            template_body = (@template != nil) ? @template : JSON.parse( IO.read(File.join(@hive_location, @name, @template_file)) )


            puts ("Writing #{File.join(@hive_location, "driver", @driver, @name, "template.json")}...")
            FileUtils.mkdir_p(File.join(@hive_location, "driver", @driver, @name))
            File.open(File.join("#{@hive_location}", "driver", @vm["driver"]["drivertype"], @name, "template.json"), 'w') { |file| file.write(template_body.to_json) }

            return template_body
        end
    end
end