#!/usr/bin/env ruby
# -------------------------------------------------------------------------- #
# Copyright 2002-2015, OpenNebula Project (OpenNebula.org), C12G Labs        #
#                                                                            #
# 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.                                             #
#--------------------------------------------------------------------------- #
ONE_LOCATION=ENV["ONE_LOCATION"]

if !ONE_LOCATION
    RUBY_LIB_LOCATION="/usr/lib/one/ruby"
else
    RUBY_LIB_LOCATION=ONE_LOCATION+"/lib/ruby"
end

$: << RUBY_LIB_LOCATION
$: << RUBY_LIB_LOCATION+"/cloud"


require 'cli/command_parser'
require 'cli/cli_helper'
require 'econe/EC2QueryClient'

include CloudCLI

TABLE = CLIHelper::ShowTable.new(nil, self) do
    column :instanceId, "instanceId", :size=>12 do |d|
        d["instanceId"]
    end

    column :ImageId, "ImageId", :size=>13 do |d|
        d["imageId"]
    end

    column :State, "State", :size=>14 do |d|
        d["instanceState"]['name']
    end

    column :IP, "IP", :size=>18 do |d|
        d['privateIpAddress']
    end

    column :instanceType, "instanceType", :size=>12 do |d|
        d["instanceType"]
    end

    default :instanceId, :ImageId, :State, :IP, :instanceType
end

CommandParser::CmdParser.new(ARGV) do
    usage "econe-describe-instances [OPTIONS]"
    version CloudCLI.version_text
    description "List and describe running instances"

    option [
        CommandParser::VERBOSE,
        CommandParser::HELP,
        CommandParser::VERSION,
        EC2QueryClient::ACCESS_KEY,
        EC2QueryClient::SECRET_KEY,
        EC2QueryClient::URL
    ]

    main do
        begin
            ec2_client = EC2QueryClient::Client.new(
                options[:access_key],
                options[:secret_key],
                options[:url])
        rescue Exception => e
            exit_with_code -1, "#{cmd_name}: #{e.message}"
        end

        rc = ec2_client.describe_instances

        if CloudClient::is_error?(rc)
            exit_with_code -1, "#{cmd_name}: #{rc.message}"
        else
            if rc.empty? ||
                    rc['reservationSet']['item'][0]['instancesSet'].nil? ||
                    rc['reservationSet']['item'][0]['instancesSet']['item'].nil?
                insts = []
            else
                insts = rc['reservationSet']['item'][0]['instancesSet']['item']
            end

            TABLE.show(insts)
            exit_with_code 0
        end
    end
end
