--[[

	sl_controller
	=============

	Copyright (C) 2018 Joachim Stolberg

	LGPLv2.1+
	See LICENSE.txt for more information

	commands.lua:
	
	Register all basic controller commands

]]--

sl_controller.register_function("get_input", {
	cmnd = function(self, num)
		_G = self._G
		num = tostring(num or "")
		return sl_controller.get_input(self.meta.number, num)
	end,
	help = " $get_input(num)  --> 'on', 'off', or nil\n"..
		" Read local input value from device with number 'num'.\n"..
		' example: inp = $get_input("1234")\n'..
		" The device has to be connected with the controller."
})

sl_controller.register_function("get_status", {
	cmnd = function(self, num) 
		_G = self._G
		num = tostring(num or "")
		return tubelib.send_request(num, "state", nil)
	end,
	help = " $get_status(num)  --> 'stopped', 'running',\n"..
		" 'standby', 'blocked' or 'fault'\n"..
		" Read status from a remote device.\n"..
		' example: sts = $get_status("1234")'
})

sl_controller.register_function("time_as_str", {
	cmnd = function(self) 
		_G = self._G
		local t = minetest.get_timeofday()
		local h = math.floor(t*24) % 24
		local m = math.floor(t*1440) % 60
		return string.format("%02d:%02d", h, m)
	end,
	help = " $time_as_str()  --> e.g. '18:45'\n"..
		" Read time of day as string (24h).\n"..
		' example: time = $time_as_str()'
})

sl_controller.register_function("time_as_num", {
	cmnd = function(self, num) 
		_G = self._G
		local t = minetest.get_timeofday()
		local h = math.floor(t*24) % 24
		local m = math.floor(t*1440) % 60
		return h * 100 + m
	end,
	help = " $time_as_num()  --> e.g.: 1845\n"..
		" Read time of day as number (24h).\n"..
		' example: time = $time_as_num()'
})

sl_controller.register_function("playerdetector", {
	cmnd = function(self, num) 
		_G = self._G
		num = tostring(num or "")
		return tubelib.send_request(num, "name", nil)
	end,
	help = " $playerdetector(num) --> e.g. 'Joe'\n"..
		" '' is returned if no layer is nearby.\n"..
		' example: name = $playerdetector("1234")'
})

sl_controller.register_action("send_cmnd", {
	cmnd = function(self, num, text) 
		_G = self._G
		num = tostring(num or "")
		text = tostring(text or "")
		tubelib.send_message(num, self.meta.owner, nil, text, nil)
	end,
	help = " $send_cmnd(num, text)\n"..
		" Send a command to the device with number 'num'.\n"..
		" For most devices: 'on', 'off'\n"..
		" Signal Tower: 'green', 'amber', 'red'\n"..
		' example: $send_cmnd("1234", "on")'
})

sl_controller.register_action("display", {
	cmnd = function(self, num, row, text1, text2, text3)
		_G = self._G
		text1 = tostring(text1 or "")
		text2 = tostring(text2 or "")
		text3 = tostring(text3 or "")
		tubelib.send_message(num, self.meta.owner, nil, "row", {row = row, str = text1..text2..text3})
	end,
	help = " $display(num, row, text,...)\n"..
		" Send a text line to the display with number 'num'.\n"..
		" 'row' is a value from 1..9\n"..
		" The function accepts up to 3 text parameters\n"..
		' example: $display("0123", 1, "Hello ", name, " !")'
})

sl_controller.register_action("clear_screen", {
	cmnd = function(self, num) 
		_G = self._G
		num = tostring(num or "")
		tubelib.send_message(num, self.meta.owner, nil, "clear", nil)
	end,
	help = " $clear_screen(num)\n"..
		" Clear the screen of the display\n"..
		" with number 'num'.\n"..
		' example: $clear_screen("1234")'
})

sl_controller.register_action("chat", {
	cmnd = function(self, text1, text2, text3) 
		_G = self._G
		text1 = tostring(text1 or "")
		text2 = tostring(text2 or "")
		text3 = tostring(text3 or "")
		minetest.chat_send_player(self.meta.owner, "[SmartLine Controller] "..text1..text2..text3)
	end,
	help =  " $chat(text,...)\n"..
		" Send yourself a chat message.\n"..
		" The function accepts up to 3 text parameters\n"..
		' example: $chat("Hello ", name)'
})

sl_controller.register_action("door", {
	cmnd = function(self, pos, text) 
		_G = self._G
		pos = tostring(pos or "")
		text = tostring(text or "")
		pos = minetest.string_to_pos("("..pos..")")
		if pos then
			local door = doors.get(pos)
			if door then
				local player = {
					get_player_name = function() return self.meta.owner end,
				}
				if state == "open" then
					door:open(player)
				elseif state == "close" then
					door:close(player)
				end
			end
		end
	end,
	help =  " %door(pos, text)\n"..
		" Open/Close a door at position 'pos'\n"..
		' example: door("123,7,-1200", "close")\n'..
		" Hint: Use the Tubelib Programmer to\ndetermine the door position."
})