Wild Mining Turtle

local SLOT_COUNT = 16
local CHUNK_SIDE = 8

function storeAll()
    for slot = 1, SLOT_COUNT, 1 do
        item = turtle.getItemDetail(slot)
        if(item ~= nil) then
            if(item["name"] == "minecraft:chest") then
                turtle.select(slot)
                turtle.placeUp()
                for slot = 1, SLOT_COUNT, 1 do
                    item = turtle.getItemDetail(slot)
                    if(item ~= nil) then
                        if((item["name"] ~= "minecraft:coal") and (item["name"] ~= "minecraft:chest")) then
                            turtle.select(slot)
                            turtle.dropUp()
                        end
                    end
                end
                return true
            end
        end
    end
    return false
end

function checkFuel()
    if(turtle.getFuelLevel() < 50) then
        for slot = 1, SLOT_COUNT, 1 do
            item = turtle.getItemDetail(slot)
            if(item ~= nil) then
                if(item["name"] == "minecraft:coal") then
                    turtle.select(slot)
                    turtle.refuel(1)
                    return true
                end
            end
        end
        return false
    end
    return true
end

function chunkDig()
    success, data = turtle.inspectDown()
    while(data.name ~= "minecraft:bedrock") do
        checkFuel()
        for times = 1, 4, 1 do
            for block = 2, 8, 1 do
                turtle.dig()
                turtle.forward()
            end
            turtle.turnRight()
            turtle.dig()
            turtle.forward()
            turtle.turnRight()
            for block = 2, 8, 1 do
                turtle.dig()
                turtle.forward()
            end
            turtle.turnLeft()
            turtle.dig()
            turtle.forward()
            turtle.turnLeft()
            checkFuel()
        end
        turtle.turnLeft()
        for block = 1, 8, 1 do
            turtle.forward()
        end
        turtle.turnRight()
        turtle.digDown()
        turtle.down()
        storeAll()
        success, data = turtle.inspectDown()
    end
    return true
end

function main()
    return chunkDig()
end

main()