startup

local function chestView(cpId, side)

    fini = false
    if side == nil then
        if not turtle.detectDown() then
            side = 6
        elseif not turtle.detectUp() then
            side = 5
        else
            rednet.send(cpId, "imp")
            return nil
        end
    end

    print(side)

    turtle.select(15)

    if side == 1 then
        turtle.place()
    elseif side == 2 then
        turtle.turnRight()
        turtle.place()
        turtle.turnLeft()
    elseif side == 3 then
        turtle.turnRight()
        turtle.turnRight()
        turtle.place()
        turtle.turnLeft()
        turtle.turnLeft()
    elseif side == 4 then
        turtle.turnLeft()
        turtle.place()
        turtle.turnRight()
    elseif side == 5 then
        turtle.placeUp()
    else
        turtle.placeDown()
    end

    while not fini do
        turtle.suck()
        if (turtle.getItemCount() == 0) then
            fini = true
        else
            rednet.send(cpId, turtle.getItemDetail().name)
            rednet.send(cpId, turtle.getItemCount())
            if side == 1 then
                turtle.drop()
            elseif side == 2 then
                turtle.turnRight()
                turtle.drop()
                turtle.turnLeft()
            elseif side == 3 then
                turtle.turnRight()
                turtle.turnRight()
                turtle.drop()
                turtle.turnLeft()
                turtle.turnLeft()
            elseif side == 4 then
                turtle.turnLeft()
                turtle.drop()
                turtle.turnRight()
            elseif side == 5 then
                turtle.dropUp()
            else
                turtle.dropDown()
            end
        end
    end

    fini = false
    while not fini do
        if side == 1 then
            turtle.suck()
        elseif side == 2 then
            turtle.turnRight()
            turtle.suck()
            turtle.turnLeft()
        elseif side == 3 then
            turtle.turnRight()
            turtle.turnRight()
            turtle.suck()
            turtle.turnLeft()
            turtle.turnLeft()
        elseif side == 4 then
            turtle.turnLeft()
            turtle.suck()
            turtle.turnRight()
        elseif side == 5 then
            turtle.suckUp()
        else
            turtle.suckDown()
        end

        if (turtle.getItemCount() == 0) then
            fini = true
        else
            turtle.drop()
        end
    end

    if side == 1 then
        turtle.dig()
    elseif side == 2 then
        turtle.turnRight()
        turtle.dig()
        turtle.turnLeft()
    elseif side == 3 then
        turtle.turnRight()
        turtle.turnRight()
        turtle.dig()
        turtle.turnLeft()
        turtle.turnLeft()
    elseif side == 4 then
        turtle.turnLeft()
        turtle.dig()
        turtle.turnRight()
    elseif side == 5 then
        turtle.digUp()
    else
        turtle.digDown()
    end
end

local function main()
    rednet.open("left")
    t = turtle
    lastMove = 0

    -- last move:
    -- 0 : nil
    -- 1 : front
    -- 2 : right
    -- 3 : back
    -- 4 : left
    -- 5 : up
    -- 6 : down

    while true do

        cpt, msg, ptc = rednet.receive()

        print("test")

        if (t.getFuelLevel() < 50) then
            t.select(16)
            t.refuel()
        end

        if (msg == 44) then
            t.forward()
            lastMove = 3
        elseif (msg == 31) then
            t.back()
            lastMove = 1
        elseif (msg == 16) then
            t.turnLeft()
            if (lastMove >= 1 and lastMove <= 4) then
                lastMove = ((lastMove - 1) + 1) % 4 + 1
            end
        elseif (msg == 32) then
            t.turnRight()
            if (lastMove >= 1 and lastMove <= 4) then
                lastMove = ((lastMove - 1) - 1) % 4 + 1
            end
        elseif (msg == 30) then
            t.up()
            lastMove = 6
        elseif (msg == 18) then
            t.down()
            lastMove = 5
        elseif (msg >= 2 and msg <= 11) then
            t.select(msg-1)
            t.place()
        elseif (msg == 33) then
            t.dig()
        elseif (msg == 34) then
            t.digDown()
        elseif (msg == 20) then
            t.digUp()
        elseif (msg == 45) then
            t.attack()
        elseif (msg == 71) then
            rednet.send(cpt, "chest")
            chestView(cpt, lastMove)
            rednet.send(cpt, "fini")
        elseif (msg == 72) then
            redstone.setOutput("front", true)
            rednet.send(cpt, yes)
        else
            rednet.send(cpt, "no")
        end

        rednet.send(cpt, t.getFuelLevel())

    end
end

main()