Scan

local m = require("blib")
local lastTurn = "Left"
local FileName = ""
local Length
local Width
local Height

local map = {x = 1, y = 0, z = 1, xf = 0, yf = 1}

function MapTurnRight()
    turtle.turnRight()
    if map.xf == 1 then
        map.xf = 0
        map.yf = -1
    elseif map.xf == -1 then
        map.xf = 0
        map.yf = 1
    elseif map.yf == 1 then
        map.yf = 0
        map.xf = 1
    elseif map.yf == -1 then
        map.yf = 0
        map.xf = -1
    end
end

function MapTurnLeft()
    turtle.turnLeft()
    if map.xf == 1 then
        map.xf = 0
        map.yf = 1
    elseif map.xf == -1 then
        map.xf = 0
        map.yf = -1
    elseif map.yf == 1 then
        map.yf = 0
        map.xf = -1
    elseif map.yf == -1 then
        map.yf = 0
        map.xf = 1
    end
end

function MapForward()
    turtle.forward()
    if map.xf == 1 then
        map.x = map.x + 1
    elseif map.xf == -1 then
        map.x = map.x - 1
    elseif map.yf == 1 then
        map.y = map.y + 1
    elseif map.yf == -1 then
        map.y = map.y - 1
    end
end

function MapUp()
    turtle.up()
    map.z = map.z + 1
end


-- Example ANY File
-- {
    -- Dimensions
    -- "X" : 2
    -- "Y" : 2
    -- "Z" : 2
    -- List of blocks needed
    -- "list" : {"name" : 1, "cobblestone" : 5, "name again" : 7} etc. for k, v in pairs(list) or whatever
    -- "1,1,1" : "minecraft:cobblestone"
    -- "2,1,1" : "Something else blockname idk"
-- }

local scan = {}

function PlaceBlock()
    local success, data = turtle.inspect()
    local fx = map.x
    local fy = map.y
    local fz = map.z

    if(map.xf ~= 0) then
        fx = fx + map.xf
    else
        fy = fy + map.yf
    end


    local key = tostring(fx) .. "," .. tostring(fy) .. "," .. tostring(fz)
    print("key: " .. key)
    if success then
        scan[key] = data.name
        print("val: " .. data.name)
    else
        scan[key] = nil
        print("val: nil")
    end
    turtle.dig()
end

function ScanAndDigUp()
    local success, data = turtle.inspectUp()
    local fx = map.x
    local fy = map.y
    local fz = map.z + 1

    local key = tostring(fx) .. "," .. tostring(fy) .. "," .. tostring(fz)
    print("key: " .. key)
    if success then
        scan[key] = data.name
        print("val: " .. data.name)
    else
        scan[key] = nil
        print("val: nil")
    end
    turtle.digUp()
end

function dump(o)
    if type(o) == 'table' then
       local s = '{ '
       for k,v in pairs(o) do
          if type(k) ~= 'number' then k = '"'..k..'"' end
          s = s .. '['..k..'] = ' .. dump(v) .. ','
       end
       return s .. '} '
    else
       return tostring(o)
    end
 end


--- Scanning Process ---
function Start()

    PlaceBlock() -- The turtle starts outside the square, as such, it enters at the start, and the Y index
    MapForward()             -- is actually decremented by one, since mining on the x axis will manage one block off each
                 -- level change


    for z = 1, Height do

        for x = 1, Width do                         -- starting length cuts one turn off, but not one column off. see below

            for y = 1, Length - 1 do                -- width cuts one length down off the next

                -- check for fuel
                if(not m.CheckFuel(10)) then
                    return Shutdown("Out of Fuel!")
                end

                -- check if inventory is full
                if(reqChests == true) then
                    if(m.InventoryFull() == true) then
                        if(m.DumpItemsChest() == false) then
                            return Shutdown("Out of chests!")
                        end
                    end
                end

                PlaceBlock()
                MapForward()
            end

            if( Width - x ~= 0) then -- Technically on the last column, we want to continue forward so we can't do 'Width - 1', but don't turn into the next column
                if(lastTurn == "Right") then -- if we're on an even column, turn left
                    MapTurnLeft()
                    PlaceBlock()
                    MapForward()
                    MapTurnLeft()
                    lastTurn = "Left"
                else -- odd columns (start is 1 btw) turn right!
                    MapTurnRight()
                    PlaceBlock()
                    MapForward()
                    MapTurnRight()
                    lastTurn = "Right"
                end
            end

        end

        if( Height - z ~= 0 ) then
            ScanAndDigUp()
            MapUp()
            MapTurnRight()
            MapTurnRight()

        end

    end

    return 1
end

function Main()
    local response
    print("Welcome to the Minecraft file scanning program")
    print("please enter the X, Y, and Z lengths of the area you'd like to scan")
    print("Length: ")
    Length = read()
    scan.Y = Length
    print("Width: ")
    Width = read()
    scan.X = Width
    print("Height: ")
    Height = read()
    scan.Z = Height
    print("What do you want to call this build file? (e.g. Sand_Castle, Cool-Cannon)")
    print("(Careful! it will overwrite existing files!)")
    FileName = read()
    Start()
    local data = textutils.serialize(scan)
    print(data)
    print("Data written!")
    local f = fs.open(FileName .. ".b", "w")
    f.write(data)
    f.close()

    print("Finished!")
end
Main() -- testing post request lol