AE Monitor

local aeStorage = peripheral.wrap("bottom")
local bigDisplay = peripheral.wrap("top")
local firstTopTen = peripheral.wrap("left")
local secondTopTen = peripheral.wrap("right")
local leftColor = 8192 -- green
local rightColor = 2048 -- blue
local overlapColor = 16 -- yellow

local graphWindow = {}
local x
local y
local JSON = (loadfile "JSON.lua")()
JSON.strictTypes = true
function printDebug(textString)
   print(textString)
end

function initDisplays()
   bigDisplay.clear()
   bigDisplay.setTextScale(.5)
   firstTopTen.clear()
   secondTopTen.clear()
end

function num2Text( inputNumber, textLength )
   inputNumber = tostring( inputNumber )
   if string.len(inputNumber ) < textLength then
      inputNumber = string.rep( " " , textLength - string.len( inputNumber ) )..inputNumber
   elseif string.len(inputNumber ) > textLength then
      inputNumber = "ERR: String too long"
   end
   return inputNumber
end

function valueToScale( maxValue, inputValue )
   return graphWindow.ylen - math.ceil( inputValue / ( maxValue / ( graphWindow.ylen - 1 ) ) )
end

function scaleToValue( maxValue, inputScale )
   return maxValue - math.floor( ( maxValue / ( graphWindow.ylen - 1 ) ) * ( inputScale - 1 ) )
end

function drawScale( maxYLeft, maxYRight )
   local leftLen = string.len( tostring( maxYLeft ) )
   local rightLen = string.len( tostring( maxYRight ) )
   printDebug(textutils.serialize(graphWindow))
   for i = graphWindow.ylen, graphWindow.y, - 1 do
      bigDisplay.setCursorPos( 1 , i )
      bigDisplay.setTextColor(leftColor)
      bigDisplay.write( num2Text( scaleToValue(maxYLeft, i), leftLen ).."-|" )
      bigDisplay.setCursorPos( graphWindow.xlen + graphWindow.x , i )
      bigDisplay.setTextColor(rightColor)
      bigDisplay.write( "|-"..num2Text( scaleToValue(maxYRight, i), rightLen ) )
   end
   bigDisplay.setCursorPos( graphWindow.x , y )
   bigDisplay.setTextColor(1)
   bigDisplay.write( string.rep( "-", graphWindow.xlen ) )
end

local leftGraphTable
local rightGraphTable

function buildGraph( leftArray, rightArray )
   leftGraphTable = {}
   rightGraphTable = {}
   local lefti = #leftArray
   local righti = #rightArray
   for i = graphWindow.xlen - 1 , 1, - 1 do
      if lefti == 0 or righti == 0 then break end
      leftGraphTable[i] = valueToScale(math.max(unpack(leftArray)), leftArray[lefti] )
      rightGraphTable[i] = valueToScale(math.max(unpack(rightArray)), rightArray[righti] )
      lefti = lefti - 1
      righti = righti - 1
   end
end

function drawGraph()
   for i = graphWindow.xlen - 1 , 1, - 1 do
      if not leftGraphTable[i] or not rightGraphTable[i] then break end
      for l = 1, graphWindow.ylen do
         bigDisplay.setCursorPos( i + graphWindow.x, l)
         bigDisplay.write(" ")
      end
      bigDisplay.setCursorPos( i + graphWindow.x, leftGraphTable[i])
      if leftGraphTable[i] == rightGraphTable[i] then
         -- If the table values are the same, draw them as an overlap
         bigDisplay.setTextColor( overlapColor )
         bigDisplay.write("=")
      else
         -- Otherwise, draw one
         bigDisplay.setTextColor( leftColor )
         bigDisplay.write("-")
         -- Then the other
         bigDisplay.setCursorPos( i + graphWindow.x, rightGraphTable[i])
         bigDisplay.setTextColor( rightColor )
         bigDisplay.write("-")
      end
   end
end

function rotateHistory( inputArray )
   local outputArray
   if not inputArray or #inputArray < ( graphWindow.xlen + 3 ) then
      outputArray = inputArray
   else
      for i = 2, #inputArray do
         outputArray[i-1] = inputArray[i]
      end
      inputArray[#inputArray] = nil
   end
   return outputArray
end

local historyType = {}
local historyCount = {}
if fs.exists("AE_History") then
   local recoveredHistory = fs.open("AE_History", "r")
   local historyData = recoveredHistory.readLine()
   printDebug(historyData)
   if historyData then
      historyData = JSON:decode(historyData)
      printDebug(textutils.serialize(historyData))
      historyType = historyData["Type"]
      historyCount = historyData["Count"]
      printDebug("Recovered old data.")
   end
   recoveredHistory.close()
end
initDisplays()
while true do
   -- Initialize displays, draw the graph axis on bigDisplay and grab AE data
   -- local allItems = aeStorage.getAvailableItems()
   table.insert( historyType, aeStorage.getRemainingItemTypes() + aeStorage.getStoredItemTypes() )
   table.insert( historyCount, aeStorage.getRemainingItemCount() + aeStorage.getStoredItemCount() )
   fs.delete("AE_History")
   recoveredHistory = fs.open("AE_History", "w")
   local tempTable = {
      Type = historyType ;
      Count = historyCount ;
   }
   recoveredHistory.write( JSON:encode( tempTable ) )
   recoveredHistory.close()
   local leftLen = string.len( tostring( math.max(unpack(historyCount)) ) )
   local rightLen = string.len( tostring( math.max(unpack(historyType)) ) )
   x, y = bigDisplay.getSize()
   graphWindow.x = leftLen + 3
   graphWindow.y = 1
   graphWindow.xlen = ( x - ( leftLen + 2 ) ) - ( rightLen + 2 )
   graphWindow.ylen = y - 1
   buildGraph( historyCount, historyType )
   drawScale( math.max(unpack(historyCount)), math.max(unpack(historyType)) )
   drawGraph()
   -- Draw graphs
   printDebug(textutils.serialize(historyType).." - "..textutils.serialize(historyCount))
   sleep(60)
   -- historyCount = rotateHistory( historyCount )
   -- historyType = rotateHistory( historyType )
end