#!/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+"/cli"

require 'command_parser'
require 'one_helper/onevnet_helper'
require 'one_helper/onecluster_helper'

cmd=CommandParser::CmdParser.new(ARGV) do
    usage "`onevnet` <command> [<args>] [<options>]"
    version OpenNebulaHelper::ONE_VERSION

    helper = OneVNetHelper.new

    before_proc do
        helper.set_client(options)
    end

    ########################################################################
    # Global Options
    ########################################################################
    set :option, CommandParser::OPTIONS+OpenNebulaHelper::CLIENT_OPTIONS

    CREATE_OPTIONS = [OneClusterHelper::CLUSTER]
    STD_OPTIONS = CommandParser::OPTIONS + OpenNebulaHelper::CLIENT_OPTIONS

    ########################################################################
    # Formatters for arguments
    ########################################################################
    set :format, :groupid, OpenNebulaHelper.rname_to_id_desc("GROUP") do |arg|
        OpenNebulaHelper.rname_to_id(arg, "GROUP")
    end

    set :format, :userid, OpenNebulaHelper.rname_to_id_desc("USER") do |arg|
        OpenNebulaHelper.rname_to_id(arg, "USER")
    end

    set :format, :vnetid, OneVNetHelper.to_id_desc do |arg|
        helper.to_id(arg)
    end

    set :format, :vnetid_list, OneVNetHelper.list_to_id_desc do |arg|
        helper.list_to_id(arg)
    end

    set :format, :filterflag, OneVNetHelper.filterflag_to_i_desc do |arg|
        helper.filterflag_to_i(arg)
    end

    set :format, :ar_id, "Integer" do |arg|
        format_int(arg)
    end

    ########################################################################
    # Commands
    ########################################################################

    create_desc = <<-EOT.unindent
        Creates a new Virtual Network from the given template file
    EOT

    command :create, create_desc, :file, :options=>CREATE_OPTIONS do
        cid = options[:cluster] || ClusterPool::NONE_CLUSTER_ID

        helper.create_resource(options) do |vn|
            begin
                template=File.read(args[0])
                vn.allocate(template, cid)
            rescue => e
                STDERR.puts e.message
                exit -1
            end
        end
    end

    delete_desc = <<-EOT.unindent
        Deletes the given Virtual Network
    EOT

    command :delete, delete_desc, [:range, :vnetid_list] do
        helper.perform_actions(args[0],options,"deleted") do |vn|
            vn.delete
        end
    end

    addar_desc = <<-EOT.unindent
        Adds an address range to the Virtual Network
    EOT

    command :addar, addar_desc, :vnetid, [:file, nil],
            :options => STD_OPTIONS + OneVNetHelper::ADDAR_OPTIONS do
        helper.perform_action(args[0],options,"lease added") do |vn|
            if args[1]
                ar = File.read(args[1])
            else
                ar = "AR = [ "

                if options[:ip]
                    if options[:ip6_global] || options[:ip6_ula]
                        ar << "TYPE=\"IP4_6\""
                    else
                        ar << "TYPE=\"IP4\""
                    end
                else
                    if options[:ip6_global] || options[:ip6_ula]
                        ar << "TYPE=\"IP6\""
                    else
                        ar << "TYPE=\"ETHER\""
                    end
                end

                if options[:size]
                    ar << ", SIZE = " << options[:size]
                else
                    STDERR.puts "Address range needs to specify size (-s size)"
                    exit -1
                end

                ar << ", IP = " << options[:ip] if options[:ip]
                ar << ", MAC = " << options[:mac] if options[:mac]
                ar << ", GLOBAL_PREFIX = " <<
                      options[:ip6_global] if options[:ip6_global]
                ar << ", ULA_PREFIX = " <<
                      options[:ip6_ula] if options[:ip6_ula]
                ar << ", GATEWAY = " << options[:gateway] if options[:gateway]
                ar << ", MASK = " << options[:netmask] if options[:netmask]
                ar << ", VLAN = YES" if options[:vlan]
                ar << ", VLAN_ID = " << options[:vlanid] if options[:vlanid]

                ar << "]"
            end

            vn.add_ar(ar)
        end
    end

    addleases_desc = <<-EOT.unindent
        (DEPRECATED, use addar) Adds a lease to the Virtual Network
    EOT

    command :addleases, addleases_desc, :vnetid, :ip, [:mac, nil] do
        helper.perform_action(args[0],options,"lease added") do |vn|
            vn.addleases(args[1], args[2])
        end
    end

    rmar_desc = <<-EOT.unindent
        Removes an address range from the Virtual Network
    EOT

    command :rmar, rmar_desc, :vnetid, :ar_id do
        helper.perform_action(args[0],options,"address range removed") do |vn|
            vn.rm_ar(args[1])
        end
    end

    rmleases_desc = <<-EOT.unindent
        (DEPRECATED, use rmar) Removes a lease from the Virtual Network
    EOT

    command :rmleases, rmleases_desc, :vnetid, :ip do
        helper.perform_action(args[0],options,"lease removed") do |vn|
            vn.rmleases(args[1])
        end
    end

    free_desc = <<-EOT.unindent
        Frees a reserved address range from the Virtual Network
    EOT

    command :free, free_desc, :vnetid, :ar_id do
        helper.perform_action(args[0],options,"address range freed") do |vn|
            vn.free(args[1])
        end
    end

    hold_desc = <<-EOT.unindent
        Holds a Virtual Network lease, marking it as used
    EOT

    command :hold, hold_desc, :vnetid, :ip,
        :options=>STD_OPTIONS + [OneVNetHelper::AR] do
        helper.perform_action(args[0],options,"lease on hold") do |vn|
            ar = options[:address_range] || -1

            vn.hold(args[1], ar)
        end
    end

    release_desc = <<-EOT.unindent
        Releases a Virtual Network lease on hold
    EOT

    command :release, release_desc, :vnetid, :ip,
        :options=>STD_OPTIONS + [OneVNetHelper::AR] do
        helper.perform_action(args[0],options,"lease released") do |vn|
            ar  = options[:address_range] || -1

            vn.release(args[1], ar)
        end
    end

    reserve_desc = <<-EOT.unindent
        Reserve addresses from the Virtual Network. A new virtual network will
        be created to hold the reservation. Optionally the reservation can be
        put on an exisiting VNET, as long as it contains a valid reservation
        from the same VNET
    EOT

    command :reserve, reserve_desc, :vnetid, [:vnetid, nil],
        :options=>STD_OPTIONS + [OneVNetHelper::AR, OneVNetHelper::NAME,
            OneVNetHelper::SIZE, OneVNetHelper::MAC, OneVNetHelper::IP] do
        helper.perform_action(args[0],options,"reservation made") do |vn|
            size = options[:size] || -1
            name = options[:name] || -1

            addr = nil
            addr = options[:mac] if options[:mac]
            addr = options[:ip] if options[:ip]

            if size == -1
                STDERR.puts "Specify a size (-s size) for the reservation"
                exit -1
            end

            if name == -1 && args[1].nil?
                STDERR.puts "Specify a name (-n name) for the reservation"
                exit -1
            end

            res = vn.reserve(name, size, options[:address_range], addr, args[1])

            if !OpenNebula.is_error?(res)
                puts "Reservation VNET ID: #{res}"
            end

            res
        end
    end


    chgrp_desc = <<-EOT.unindent
        Changes the Virtual Network group
    EOT

    command :chgrp, chgrp_desc,[:range, :vnetid_list], :groupid do
        helper.perform_actions(args[0],options,"Group changed") do |vn|
            vn.chown(-1, args[1].to_i)
        end
    end

    chown_desc = <<-EOT.unindent
        Changes the Virtual Network owner and group
    EOT

    command :chown, chown_desc, [:range, :vnetid_list], :userid,
            [:groupid,nil] do
        gid = args[2].nil? ? -1 : args[2].to_i
        helper.perform_actions(args[0],options,"Owner/Group changed") do |vn|
            vn.chown(args[1].to_i, gid)
        end
    end

    chmod_desc = <<-EOT.unindent
        Changes the Virtual Network permissions
    EOT

    command :chmod, chmod_desc, [:range, :vnetid_list], :octet do
        helper.perform_actions(args[0],options, "Permissions changed") do |vn|
            vn.chmod_octet(args[1])
        end
    end

    list_desc = <<-EOT.unindent
        Lists Virtual Networks in the pool
    EOT

    command :list, list_desc, [:filterflag, nil],
            :options=>CLIHelper::OPTIONS+OpenNebulaHelper::OPTIONS+
            [OpenNebulaHelper::DESCRIBE] do
        helper.list_pool(options, false, args[0])
    end

    show_desc = <<-EOT.unindent
        Shows information for the given Virtual Network
    EOT

    command :show, show_desc, :vnetid,
            :options=>[OpenNebulaHelper::XML, OneVNetHelper::SHOW_AR] do
        helper.show_resource(args[0],options)
    end

    update_desc = <<-EOT.unindent
        Update the template contents. If a path is not provided the editor will
        be launched to modify the current content.
    EOT

    command :update, update_desc, :vnetid, [:file, nil],
    :options=>OpenNebulaHelper::APPEND do
        helper.perform_action(args[0],options,"modified") do |obj|
            if options[:append]
                str = OpenNebulaHelper.append_template(args[0], obj, args[1])
            else
                str = OpenNebulaHelper.update_template(args[0], obj, args[1])
            end

            obj.update(str, options[:append])
        end
    end

    update_ar_desc = <<-EOT.unindent
        Update Address Range variables. SIZE, IP, MAC and TYPE cannot be updated
    EOT

    command :updatear, update_ar_desc, :vnetid, :ar_id, [:file, nil] do
        helper.perform_action(args[0],options,"modified") do |obj|
            rc = obj.info

            if OpenNebula.is_error?(rc)
                puts rc.message
                exit -1
            end

            obj.delete_element("AR_POOL/AR[AR_ID!=#{args[1]}]")
            obj.delete_element("AR_POOL/AR/LEASES")
            obj.delete_element("AR_POOL/AR/USED_LEASES")
            obj.delete_element("AR_POOL/AR/MAC_END")
            obj.delete_element("AR_POOL/AR/IP_END")
            obj.delete_element("AR_POOL/AR/IP6_ULA")
            obj.delete_element("AR_POOL/AR/IP6_ULA_END")
            obj.delete_element("AR_POOL/AR/IP6_GLOBAL")
            obj.delete_element("AR_POOL/AR/IP6_GLOBAL_END")

            if obj.template_like_str("AR_POOL").empty?
                puts "Address Range #{args[1]} does not exist for "<<
                    "Virtual Network #{args[0]}"
                exit -1
            end

            str = OpenNebulaHelper.update_template_helper(false, args[0], obj,
                args[2], "AR_POOL", false)

            obj.update_ar(str)
        end
    end

    rename_desc = <<-EOT.unindent
        Renames the Virtual Network
    EOT

    command :rename, rename_desc, :vnetid, :name do
        helper.perform_action(args[0],options,"renamed") do |o|
            o.rename(args[1])
        end
    end
end
