local function newProgressBar(t)
    local mt = {
        borderStart = {
            text = "",
            textColor = nil,
            backgroundColor = nil,
        },
        borderMiddleLoaded = {
            text = " ",
            textColor = nil,
            backgroundColor = colors.white
        },
        borderEnd = {
            text = "",
            textColor = nil,
            backgroundColor = nil
        },
        borderMiddleEmpty ={
            text = " ",
            textColor = nil,
            backgroundColor = colors.black
        },
        minValue = 1,
        maxValue = 100,
        currentValue = 1,
        pos = {1, 1},
        size = {5, 1},
        update = function(self, currentValue)
            self.currentValue = currentValue
        end,
        draw = function(self)
            local posX, posY = unpack(self.pos)
            local sizeX, sizeY = unpack(self.size)
            local percentage = (self.currentValue - self.minValue) / (self.maxValue - self.minValue)
            local loadedLength = math.floor(percentage * (sizeX - 1) + 0.5) 
            for i = 1, 2 do
                local borderType = i == 1 and "borderMiddleLoaded" or "borderMiddleEmpty"
                if self[borderType].textColor then
                    term.setTextColor(self[borderType].textColor)
                end
                if self[borderType].backgroundColor then
                    term.setBackgroundColor(self[borderType].backgroundColor)
                end
                if type(self[borderType].text) == "string" then
                    term.setCursorPos(posX + (i == 1 and 0 or loadedLength) + 1, posY)
                    local emptyLength = (sizeX - loadedLength - 1) > 0 and (sizeX - loadedLength - 1) or 0
                    term.write(string.rep(self[borderType].text, (i == 1 and loadedLength or emptyLength)))
                elseif type(self[borderType].text) == "table" then
                    for j, v in ipairs(self[borderType].text) do
                        term.setCursorPos(posX + (i == 1 and 0 or loadedLength) + 1, posY + j - 1)
                        term.write(string.rep(v, (i == 1 and loadedLength or emptyLength)))
                    end
                end
            end
            for i = 1, 2 do
                local borderType = i == 1 and "borderStart" or "borderEnd"
                if self[borderType].textColor then
                    term.setTextColor(self[borderType].textColor)
                end
                if self[borderType].backgroundColor then
                    term.setBackgroundColor(self[borderType].backgroundColor)
                end
                if type(self[borderType].text) == "string" then
                    term.setCursorPos(posX + (i == 1 and 0 or sizeX), posY)
                    term.write(self[borderType].text)
                elseif type(self[borderType].text) == "table" then
                    for j, v in ipairs(self[borderType].text) do
                        term.setCursorPos(posX + (i == 1 and 0 or sizeX), posY + j - 1)
                        term.write(v)
                    end
                end
            end
        end
    }

    setmetatable(t, {__index = mt})
    return t
end