ShopDirectory_WEST

Shop_L1 = { x = -1726, y = 30, z = 30 }
Shop_L2 = { x = -1710, y = 30, z = 30 }
Shop_L3 = { x = -1692, y = 30, z = 30 }
Shop_L4 = { x = -1674, y = 30, z = 30 }
Shop_L5 = { x = -1656, y = 30, z = 30 }
Shop_R1 = { x = -1726, y = 30, z = -8 }
Shop_R2 = { x = -1710, y = 30, z = -8 }
Shop_R3 = { x = -1692, y = 30, z = -8 }
Shop_R4 = { x = -1674, y = 30, z = -8 }
Shop_R5 = { x = -1656, y = 30, z = -8 }
Shop_H1 = { x = -1731, y = 38, z = 18 }
Shop_H2 = { x = -1731, y = 38, z = 4 }

direction = "bottom"
const_rent = "FOR RENT"

function getText(sign, line)
    if (line == nil) then
        line = 0
    end
    -- use sign.x, etc
    return adminapi.getSignLine("PlayerShop", sign.x, sign.y, sign.z, line)
end

function string.jsub(str, startIndex, endIndex)
    if (endIndex == nil) then
        endIndex = string.len(str) + 1
    end

    return string.sub(str, startIndex, endIndex - 1)
end

function cpos(x, y)
    monitor.setCursorPos(x, y)
end
function writeText(x, y, text)
    cpos(x, y)
    monitor.write(text)
end

function writeTextColour(x, y, text, brush)
    cpos(x, y)
    monitor.setTextColour(brush)
    monitor.write(text)
    monitor.setTextColour(colours.white)
end

function writeCentered(x1, x2, y, text)
    local len = string.len(text)
    local mid = math.ceil(x1 + ((x2 - x1) / 2))
    local startX = mid - (len / 2)
    writeText(startX, y, text)
end

function writeCenteredColour(x1, x2, y, text, brush)
    local len = string.len(text)
    local mid = math.ceil(x1 + ((x2 - x1) / 2))
    local startX = mid - (len / 2)
    writeTextColour(startX, y, text, brush)
end

function drawLineV(x, y, height, brush)
    for i = y, height, 1 do
        writeTextColour(x, i, "|", brush)
    end
end

function drawLineH(x, y, width, brush)
    for i = x, width, 1 do
        writeTextColour(i, y, "-", brush)
    end
end

function writeSignTop(sign, x1, x2, y)
    local text = string.jsub(getText(sign), 3)
    local brush = colours.orange
    if (text == const_rent) then
        brush = colours.green
    else
        text = string.jsub(getText(sign, 3), 3)
    end

    writeCenteredColour(x1, x2, y, text, brush)
end

function writeSignLeft(sign, y, w, h)
    local text = string.jsub(getText(sign), 3)
    local brush = colours.orange
    if (text == const_rent) then
        brush = colours.green
    else
        text = string.jsub(getText(sign, 3), 3)
    end

    writeTextColour(2, y, text, brush)
end

function writeSignRight(sign, y, w, h)
    local text = string.jsub(getText(sign), 3)
    local len = string.len(text)
    local brush = colours.orange
    if (text == const_rent) then
        brush = colours.green
    else
        text = string.jsub(getText(sign, 3), 3)
    end

    writeTextColour(w - len, y, text, brush)
end

function main()
    monitor = peripheral.wrap(direction)
    cpos(1,1)
    monitor.clear()
    local w,h = monitor.getSize()

    monWidth = w
    monHeight = h

    yOff = 2
    mid = (w / 2)
    gap = 2

    while (true) do
        local i = 0
        drawLineV(mid, 1, h, colours.red)
        drawLineH(1, 4, w, colours.red)
        writeSignTop(Shop_H1, 2, mid - 2, 2)
        writeSignTop(Shop_H2, mid + 2, w - 2, 2)
        writeSignLeft(Shop_L1, yOff + 4, w, h)
        writeSignLeft(Shop_L2, yOff + 8, w, h)
        writeSignLeft(Shop_L3, yOff + 12, w, h)
        writeSignLeft(Shop_L4, yOff + 16, w, h)
        writeSignLeft(Shop_L5, yOff + 20, w, h)
        writeSignRight(Shop_R1, yOff + 4, w, h)
        writeSignRight(Shop_R2, yOff + 8, w, h)
        writeSignRight(Shop_R3, yOff + 12, w, h)
        writeSignRight(Shop_R4, yOff + 16, w, h)
        writeSignRight(Shop_R5, yOff + 20, w, h)
        os.sleep(10)
    end
end

main()