-- By Sp1rit

local windows = {
	getTitle = function(self)
		return self.title
	end,
	setTitle = function(self, text)
		if text ~= nil and string.len(text) > 0 then
			self.title = text
		else
			self.title = ""
		end
	end,
	setLine = function(self, line, text, color)
		if text ~= nil and string.len(text) > 0 then
			self.content[line] = {}
			self.content[line]["text"] = text
			self.content[line]["color"] = color or colors.white
		end
	end,
	getLine = function(self, line)
		return self.content[line]
	end,
	clearLine = function(self, line)
		table.remove(self.content, line)
	end,
	setBackgroundColor = function(self, color)
		if color ~= nil and tonumber(color) > 0 then
			self.backgroundColor = color
		else
			self.backgroundColor = colors.black
		end
	end,
	setBorderColor = function(self, color)
		if color ~= nil and tonumber(color) > 0 then
			self.borderColor = color
		else
			self.borderColor = colors.white
		end
	end,
	setTitleColor = function(self, color)
		if color ~= nil and tonumber(color) > 0 then
			self.titleColor = color
		else
			self.titleColor = colors.white
		end
	end,
	draw = function(self)
		local drawTitle = (string.len(self.title) > 0)
		local startPos = vector.new(self.x, self.y)
		local endPos = startPos:add(vector.new(self.width - 1, self.height - 1))

		term.setBackgroundColor(self.backgroundColor)

		for y = startPos.y, endPos.y do
			for x = startPos.x, endPos.x do
				term.setCursorPos(x, y)

				if x == startPos.x or x == endPos.x then
					term.setTextColor(self.borderColor)

					if y == startPos.y then
						term.write(",")
					elseif y == endPos.y or y == startPos.y + 2 and drawTitle then
						term.write("+")
					else
						term.write("|")
					end
				else
					if y == startPos.y or y == endPos.y or y == startPos.y + 2 and drawTitle then
						term.setTextColor(self.borderColor)
						term.write("-")
					else
						term.write(" ")
					end
				end
			end
		end

		local textPos = startPos:add(vector.new(2, (drawTitle and 3 or 1)))
		local lineCount = self.height - (drawTitle and 4 or 2)

		if drawTitle then
			term.setCursorPos(textPos.x, textPos.y - 2)
			term.setTextColor(self.titleColor)
			term.write(self.title)
		end

		term.setTextColor(colors.white)
		for i = 1, lineCount do
			if self.content[i] ~= nil then
				term.setCursorPos(textPos.x, textPos.y + i - 1)
				term.setTextColor(self.content[i].color)
				term.write(self.content[i].text)
			end
		end

		term.setCursorPos(endPos.x, endPos.y)
		term.setBackgroundColor(colors.black)
		term.setTextColor(colors.white)
	end
}

local wmetatable = {
	__index = windows
}

function new(x, y, width, height)
	local w = {
		x = x or 0,
		y = y or 0,
		width = width or 0,
		height = height or 0,
		title = "",
		content = {},
		backgroundColor = colors.black,
		borderColor = colors.white,
		titleColor = colors.white
	}
	setmetatable( w, wmetatable )
	return w
end