mine

junk = {"granite","andesite","dirt", "stone","gravel","diorite", "grass_block", "flint", "cobblestone","bedrock", "lapis", "gold"}

depth = 0
function valuable()
  if (turtle.inspect()) then
    local succ, data = turtle.inspect()
    data.name = data.name:gsub("minecraft:", "")
    if (string.match(data.name, "_ore")) then
      data.name = data.name:gsub("_ore", "")
      shell.run("data "..data.name.." 1")
      turtle.dig()
    end
  end
end

function checkWalls()
  for i = 1, 4 do
    valuable()
    turtle.turnRight()
  end
end

function mine()
  while (turtle.getFuelLevel() <= 130) do
    turtle.turnRight()
  end

  while turtle.down() do end
  depth = 0
  while (turtle.inspectDown() or turtle.down()) do
    depth = depth + 1
    local success, data = turtle.inspectDown()
    if (data.name == "minecraft:bedrock") then
      break
    elseif (data.name == "minecraft:water" or data.name == "minecraft:flowing_water" or data.name == "minecraft:lava") then
      turtle.down()
    else
      turtle.digDown()
    end
    checkWalls()
  end

  organize()

  for i = 1, depth do
    turtle.up()
  end
  turtle.select(1)
  turtle.placeDown()
end

function organize()
  turtle.up()
  depth = depth - 1
  inventory = {}

  for i = 2,16 do
    if (turtle.getItemDetail(i)) then
      data = turtle.getItemDetail(i)
      data["slot"] = i
      table.insert(inventory,data)
    end
  end

  for key, valu in pairs(inventory) do
    if (isJunk(inventory[key].name)) then
      turtle.select(inventory[key].slot)
      turtle.dropDown()
    end
  end
end

function isJunk(input)
    local _match
    for key, valu in pairs(junk) do
      if (input == "minecraft:"..junk[key]) then
        _match = true
      end
    end
    if (_match) then
      return true
    else
      return false
    end
end

function main()
  while true do
    mine()
    depo()
    pathing()
  end
end

function depo()
  if (turtle.getItemDetail(16)) then
     if (turtle.getItemDetail(16).name == "minecraft:chest" and turtle.getItemDetail(11)) then
        turtle.select(16)
        turtle.placeUp()
        for i = 2,15 do
          if (turtle.getItemDetail(i)) then
            turtle.select(i)
            turtle.dropUp()
          end
        end
     end
  else
    print("Out of chests")
    while true do
      turtle.turnRight()
    end
  end
end

function pathing()
  turtle.turnRight()
  pathDetect()
  turtle.forward()
  pathDetect()
  turtle.forward()
  turtle.turnLeft()
  pathDetect()
  turtle.forward()
end

function pathDetect()
  while turtle.detect() do
    if (turtle.up()) then
    else
      turtle.digUp()
    end
  end
end

main()