VisitorDB

os.loadAPI("ocs/apis/sensor")

-- Wrap the sensor

for a,b in pairs(rs.getSides()) do
  if peripheral.getType(b) == 'sensor' then
   prox = sensor.wrap(b)
   break
  end
end

-- Create database if it doesn't exist

if fs.exists("database") == false then
        term.clear()
        term.setCursorPos(11,4)
        print("Enter your In-game name here")
        term.setCursorPos(20,6)
        owner = read()
        ini = fs.open("database", "a")
        ini.writeLine(owner)
        ini.close()
 end

term.clear()
term.setCursorPos(13,4)
print("Now logging to database \n open the file 'database' to see who visited")

-- Loop through the database and store data in table

function readTable()
        h = fs.open("database", "r")
        l = {}
        count = 0
        while true do
                local line = h.readLine()
                        if line == nil then
                                break
                        end
        count = count + 1
        table.insert(l, line)
        end
end

-- Run the function one time to get everything into the table
readTable()

while true do
owner = (l[1])
example = http.get("http://www.timeapi.org/gmt/in+2+hours")
everything = tostring(example.readAll())
example.close()
date = string.sub(everything, 1,10)
time = string.sub(everything, 12,19)

local targets = prox.getTargets()
        for name, basicDetails in pairs(targets) do
         lastLine = string.find(l[count], name)
                if lastLine == nil and name ~= owner then
                        p = fs.open("database", "a")
                        p.writeLine(name .. " " .. time .. " " .. date)
                        p.close()
                        table.insert(l, name .. " " .. time .. " " .. date)
                        count = count + 1
                        break
                end
        end
-- Change this if you want to check for names more than once every 10 seconds. (Time API might not like it)
sleep(10)
end