rednet.close("bottom")
rednet.open("bottom")
mon = peripheral.wrap("top")

function alarm(val)
	if val == "On" then
		rednet.send(0,"alarmOn")
	end
	if val == "Off" then
		rednet.send(0,"alarmOff")
	end
end

-- Initial reactor and turbine status
reactor = peripheral.wrap("BigReactors-Reactor_0")
turbine = peripheral.wrap("BigReactors-Turbine_0")
if reactor.getActive() == true then
	reactorBtnText = "Deactivate reactor"
else
	reactorBtnText = "Activate reactor"
end
if turbine.getActive() == true then
	turbineBtnText = "Deactivate turbine"
else
	turbineBtnText = "Activate turbine"
end



local button = { --Our main button table. Contains everything from button draw functions to the button information.
	button_defaults = { --This is the metatable which we give set new buttons to. It provides color/size defaults.
		__index = {
			color_bg = colors.orange;
			color_cl = colors.blue;
			color_txt = colors.black;

			height = 3;
			padding = 2;
			isClicked = false;
		};
	};
	mt = { --This is the main metatable of the button table. It changes the behavior of the table to allow for calling and adding new indexes.
		__call = function(self) --This allows us to call the table as if it were a function.
			for index, btn in pairs(self.buttons) do
				local color = btn.isClicked and btn.color_cl or btn.color_bg
				mon.setBackgroundColor(color)
				mon.setTextColor(btn.color_txt)
				for yPos = btn.y, btn.bounds.y2 do
					mon.setCursorPos(btn.x, yPos)
					mon.write(string.rep(" ", btn.width))
				end
				local text = btn.isClicked and btn.clickText or btn.text
				mon.setCursorPos(btn.x + (btn.width/2 - #text/2), btn.y + (btn.height/2))
				mon.write(text)
			end
		end;

		__newindex = function(t, key, value) --This changes the behavior of the table upon adding a new button
			assert(type(value)=="table", "Requires a table") --assert will check that a condition is true; if it is not, it will error with the provided text
			assert(value.x, "Requires initial x")
			assert(value.y, "Requires initial y")
			assert(value.text, "Requires text value")
			setmetatable(value, t.button_defaults) --Give our new button its defaults with the __index metamethod
			value.width = #value.text + (value.padding * 2)
			value.bounds = {
				x1 = value.x; --I don't use the x1 or y1 vars from the bounds table due to the fact that it's shorter to simply type btn.x than btn.bounds.x, but they are equal to the same thing (obviously)
				y1 = value.y;
				x2 = value.x + value.width - 1; --In order to draw and detect clicks correctly, you need to subtract 1 from the width and height.
				y2 = value.y + value.height - 1;
			}
			t.buttons[key]=value --In the video, I am aware that I used rawset. However, it is actually not necessary because we are not changing the button table directly, but rather the button.buttons table (which has no newindex metamethod)
		end;
	};

	checkClick = function(self, x,y) --This checks whether you have actually clicked on a table
		for index, btn in pairs(self.buttons) do
			if x>=btn.x and x<=btn.bounds.x2 and y>=btn.y and y<=btn.bounds.y2 then
				btn.isClicked = true --If we have actually clicked the button then set its click value to true
				if btn.onClick then --And check if it has an onClick function
					btn:onClick() --If so, then execute it and pass the button's table/info into it by using the colon operator
				end
				return index --Return the index of the button so we can unhighlight it
			end
		end
	end;

	buttons = {}; --This is the table that we'll keep all the buttons in

}
setmetatable(button, button.mt) --Set the metatable of button to button.mt

button[1] = {
	x = 1;
	y = 1;
	text = reactorBtnText;
	clickText = "Please wait...";
	onClick = function(self)
		if reactor.getActive() == true then
			-- Deactivate reactor
			alarm("On")
			sleep(5.5)
			alarm("Off")
			reactor.setActive(false)
			self.text = "Activate reactor"
		else
			-- Deactivate reactor
			alarm("On")
			sleep(7.5)
			alarm("Off")
			reactor.setActive(true)
			self.text = "Deactivate reactor"
		end
	end
}

button[2] = {
	x = 4;
	y = 1;
	text = turbineBtnText;
	clickText = "Clicked.";
	onClick = function(self) --What is performed upon clicking the button
		mon.setBackgroundColor(colors.black)
		mon.setCursorPos(1,1)
		mon.write("New button title: ")
		--local input = read()
		--self.text = input --Set the button[2] text to input
	end;
}

local timer = { --This will keep track of clicked buttons/the timers associated with them
	index = false;
	timer = false;
}
while true do
	mon.clear()
	button() --Always draw the button first
	local e = {os.pullEvent()} --Then pull our events
	if e[1] == "monitor_touch" then
		local index = button:checkClick(e[3], e[4]) --Check the click: make sure to pass the button table into the checkClick function
		if index then
			timer.index =	index--The index of the button that is clicked
			timer.timer = os.startTimer(1)
		end
	elseif e[1] == "timer" and e[2] == timer.timer then --If we get a timer event and the ID is equal to the timer.timer var then
		button.buttons[timer.index].isClicked = false --Deselect the button
		timer = {} --This is actually fairly memory inneficient, but for such a small program it doesn't really matter. Rather than do this though, you should probably just manually set the values of timer.index/timer.timer to false
	end
end