Rednet Spam Monitor index

local activeError = nil
local w, h = term.getSize()
local spamData = {}
local ready = false

local function drawHeader()
    term.setBackgroundColor(colors.lightGray)
    term.clear()
    term.setCursorPos(1, 1)
    term.setBackgroundColor(colors.white)
    term.clearLine()
    term.setCursorPos(1, 2)
    term.clearLine()
    term.setTextColor(colors.cyan)
    center("Rednet Spam Monitor by 1lann")
    term.setCursorPos(1, 3)
    term.clearLine()
end

local function drawBottomBar(err)
    term.setBackgroundColor(colors.gray)
    if err then
        activeError = err
        term.setCursorPos(1, h)
        term.setTextColor(colors.red)
        term.clearLine()
        center(err)
    else
        activeError = nil
        term.setCursorPos(1, h)
        term.clearLine()
        term.setTextColor(colors.green)
        center("Connected to the server!")
    end
end

local function drawData(data)
    term.setBackgroundColor(colors.lightGray)
    term.clear()
    drawHeader()
    drawBottomBar(activeError)
    term.setBackgroundColor(colors.lightGray)
    if #data > 0 then
        for k,v in pairs(data) do
            term.setBackgroundColor(colors.white)
            local baseY = (4 * (k - 1) + 1) + 4
            term.setCursorPos(2, baseY)
            term.write(string.rep(" ", w - 4))
            term.setCursorPos(3, baseY)
            term.setTextColor(colors.red)
            local time = "Ongoing..."
            if v.time > 7 then
                time = math.floor(v.time) .. " secs ago"
            end
            term.write("Computer ID: " .. v.id .. " | Time: " .. time)
            term.setCursorPos(2, baseY + 1)
            term.write(string.rep(" ", w - 4))
            term.setCursorPos(3, baseY + 1)
            term.setTextColor(colors.lightBlue)
            if v.locationA and v.locationB then
                term.write(v.locationA)
                term.setCursorPos(2, baseY + 2)
                term.write(string.rep(" ", w - 4))
                term.setCursorPos(3, baseY + 2)
                term.write(v.locationB)
            else
                term.write(v.locationA)
            end
        end
    else
        term.setCursorPos(1, 9)
        term.setTextColor(colors.lightBlue)
        center("The skies are all clear!")
        term.setCursorPos(1, 10)
        center("No spam to be seen")
    end
end

local serverLoop = function()
    while true do
        local rawData = firewolf.query("get")
        if rawData then
            local data = textutils.unserialize(rawData)
            if type(data) == "table" then
                spamData = data
                ready = true
                drawData(data)
            else
                drawBottomBar("Server error!")
            end
        else
            drawBottomBar("Could not connect to server! Retrying...")
        end
        sleep(5)
    end
end

local updateLoop = function()
    while true do
        for k,v in pairs(spamData) do
            spamData[k].time = spamData[k].time + 1
        end
        if ready then
            drawData(spamData)
        else
            term.setCursorPos(1, 9)
            term.setBackgroundColor(colors.lightGray)
            term.setTextColor(colors.lightBlue)
            center("Connecting...")
        end
        sleep(1)
    end
end

drawHeader()
parallel.waitForAny(serverLoop, updateLoop)