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#--
# CyborgHood, a distributed system management software.
# Copyright (c) 2009-2010 Marc Dequènes (Duck) <Duck@DuckCorp.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#++

module CyborgHood
class Command
attr_reader :cmdline, :cmdsplit, :parsing_errors

def initialize(cmdline, cmdsplit, parsing_errors = [])
@cmdline = cmdline
@cmdsplit = cmdsplit
@parsing_errors = parsing_errors
end

def valid?
@parsing_errors.empty?
end
end

class SharedParameter
attr_reader :content_type, :content

def initialize(content, content_type = nil)
@content = content
@content_type = content_type
end
end

class ParameterReference
attr_reader :reference

def initialize(reference)
@reference = reference
end
end

class Order
include I18nTranslation
attr_reader :error, :user, :commands, :shared_parameters

def initialize(params = {})
@error = params[:error]
@user = params[:user]
@commands = params[:commands]
@shared_parameters = params[:shared_parameters]
end

def self.parse(user, command_lines, shared_parameters)
logger.debug "Parsing Order"
used_refs = []
commands = []
command_lines.each do |line|
line.strip!
# skip empty lines and comments
next if line == "" or line[0, 1] == "#"

errors = []
begin
raw_cmd_parts = line.shellsplit
rescue
errors << _("Syntax error in command.")
raw_cmd_parts = []
end
cmd_parts = raw_cmd_parts.collect do |word|
yield word, errors, used_refs
end

commands << Command.new(line, cmd_parts, errors)
end

# remove references to unused parameters
shared_parameters.delete_if{|ref, param| not used_refs.include?(ref) }

logger.debug "Order is OK"
new(:user => user, :commands => commands, :shared_parameters => shared_parameters)
end

def self.dereference_param(shared_parameters, param, ref = nil)
if param.is_a? SharedParameter
[ref, param]
elsif param.is_a? ParameterReference
d_ref = param.reference
d_param = shared_parameters[d_ref]
return dereference_param(shared_parameters, d_param, d_ref)
else
nil
end
end

def valid?
@error.nil? and @user and not @commands.empty?
end
end
end
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