-- REMOTE CONTROLLING CLIENTS (XEP-0146)

-- library

require 'lm'
require 'iq'
-- forms
require 'disco'

-- public

remote = { }

function remote.list ( conn, to, success, fail )
	disco.items ( conn, to, success, fail, 'http://jabber.org/protocol/commands' )
end

function remote.command ( conn, to, command, success, fail )
	iq.send ( conn, to, 'set',
		{
			command = { xmlns = 'http://jabber.org/protocol/commands', action = 'execute', node = command },
		},
		function ( mess )
			local c = mess:child ( 'command' )
			if c then
				local x = c:child ( 'x' )
				if x then
					local sid = c:attribute ( 'sessionid' )
					local id  = parse_form ( x ) -- FIXME
					forms[id].send =
						function ( form )
							iq.send ( conn, to, 'set',
								{
									command = { xmlns = 'http://jabber.org/protocol/commands', node = command, sessionid = sid,
										x = { xmlns = 'jabber:x:data', type = 'form',
											field = form.val,
										},
									},
								},
								function ( mess )
									local c = mess:child ( 'command' )
									if c and c:attribute ( 'status' ) == 'completed' then
										success ()
										main.print_info ( to, 'Now you can run /form del ' .. id .. ' to delete form from list' )
										form.status = 'acquired'
									else
										print ( 'D: FIXME: nonsuccessful remote command: ' .. mess:xml () )
									end
								end,
								function ( mesg )
									main.print_info ( to, 'Got non-successful response to form: ' .. mesg )
									form.status = 'rejected'
								end )
							form.status = 'sent'
						end
					forms[id].status = 'filling'
					main.print_info ( to, 'You have new form. To fill it, use /form ' .. id .. ' fieldname value' )
				end
			end
		end,
		fail )
end

-- mcabber

main.command ( 'remote',
	function ( args )
		local who
		if args.t then
			who = args.t
		else
			who = main.full_jid ()
		end
		local action = args[1]
		local conn   = lm.connection.bless ( main.connection () )
		if action then
			remote.command ( conn, who, action,
				function ()
					main.print_info ( who, ('Command %s executed'):format ( action ) )
				end,
				function ( mesg )
					main.print_info ( who, ('Command %s execution failed: %s'):format ( action, mesg ) )
				end )
		else
			remote.list ( conn, who,
				function ( items )
					local text = ''
					for index, item in ipairs ( items ) do
						text = text .. '\n - ' .. item.node
					end
					if text ~= '' then
						main.print_info ( who, 'Available commands:' .. text )
					else
						main.print_info ( who, 'No commands available.' )
					end
				end,
				function ( mesg )
					main.print_info ( who, ("Remote commands list for %s failed: %s"):format ( who, mesg ) )
				end )
		end
	end, true, 'jid' )

commands_help['remote'] = "[-t target_jid] [remote_command]\n\nPrints list of available remote command or requests execution of specified command."

-- vim: se ts=4: --