-- Define ANSI color codes and setup
local colors = {
    Reset = colors.white,
    Black = colors.black,
    Red = colors.red,
    Green = colors.green,
    Yellow = colors.yellow,
    Blue = colors.blue,
    Magenta = colors.magenta,
    Cyan = colors.cyan,
    White = colors.white,
}

local DEBUG_MODE = true  -- Toggle this to enable/disable debug messages
local visited = {}  -- Map to track visited coordinates
local x, y, z = 0, 0, 0 -- Current position of the turtle
local facing = 0 -- Current facing of the turtle: 0=north, 1=east, 2=south, 3=west

-- Helper functions
local function debugPrint(message, color)
    if DEBUG_MODE then
        print(colors[color] .. message .. colors.Reset)
    end
end

local function saveKnowledge(data, filename)
    local file = fs.open(filename, "w")
    if file then
        file.write(textutils.serialize(data))
        file.close()
        debugPrint("Data saved to " .. filename, "Green")
        return true
    else
        debugPrint("Failed to save data to " .. filename, "Red")
        return false
    end
end

local function isVisited(x, y, z)
    return visited[x .. "," .. y .. "," .. z] or false
end

local function markVisited(x, y, z)
    visited[x .. "," .. y .. "," .. z] = true
    debugPrint("Marked visited: (" .. x .. ", " .. y .. ", " .. z .. ")", "Yellow")
end

local function getNextMove()
    -- Simple heuristic: prioritize unvisited directions
    local directions = {
        {dx = 1, dy = 0, dz = 0}, {dx = -1, dy = 0, dz = 0}, -- East, West
        {dx = 0, dy = 1, dz = 0}, {dx = 0, dy = -1, dz = 0}, -- North, South
        {dx = 0, dy = 0, dz = 1}, {dx = 0, dy = 0, dz = -1}  -- Up, Down
    }

    for _, direction in ipairs(directions) do
        local newX = x + direction.dx
        local newY = y + direction.dy
        local newZ = z + direction.dz
        if not isVisited(newX, newY, newZ) then
            return direction.dx, direction.dy, direction.dz
        end
    end
    debugPrint("No unvisited moves available.", "Red")
    return nil, nil, nil
end

local function moveTurtle(dx, dy, dz)
    -- Adjust the direction before moving
    if dz ~= 0 then
        if dz > 0 then turtle.up() else turtle.down() end
    elseif dx ~= 0 then
        while facing ~= (dx > 0 and 1 or 3) do
            turtle.turnRight()
            facing = (facing + 1) % 4
        end
        turtle.forward()
    elseif dy ~= 0 then
        while facing ~= (dy > 0 and 0 or 2) do
            turtle.turnRight()
            facing = (facing + 1) % 4
        end
        turtle.forward()
    end
    markVisited(x + dx, y + dy, z + dz)
end

-- Main function to start scanning
local function startScanning()
    markVisited(x, y, z)  -- Mark the starting position as visited
    while true do
        local dx, dy, dz = getNextMove()
        if dx or dy or dz then
            moveTurtle(dx, dy, dz)
        else
            break  -- No moves available, finish scanning
        end
    end
    saveKnowledge(visited, "visitedLocations.dat")
end

-- Call to start scanning
startScanning()



-- Function to fill the turtle's inventory
local function fillInventory()
    debugPrint("Filling inventory...", colors.Green)
    for slot = 1, 16 do
        turtle.select(slot)
        turtle.suck()
    end
    debugPrint("Inventory filled.", colors.Green)
end

-- Function to learn what blocks are in what slots
local function learnInventory()
    debugPrint("Learning inventory...", colors.Yellow)
    local inventory = {}
    for slot = 1, 16 do
        local item = turtle.getItemDetail(slot)
        if item then
            inventory[slot] = item.name
        end
    end
    debugPrint("Inventory learned.", colors.Yellow)
    return inventory
end

-- Function to save block names to an output file
local function saveBlockNames(inventory)
    debugPrint("Saving block names to output file...", colors.Blue)
    local file = fs.open("output.txt", "w")
    if file then
        for slot, blockName in pairs(inventory) do
            file.writeLine("Slot " .. slot .. ": " .. blockName)
        end
        file.close()
    end
    debugPrint("Block names saved to output file.", colors.Blue)
end

-- Function to load block names from a file
local function loadBlockNames(filename)
    debugPrint("Loading block names from file...", colors.Magenta)
    local blockNames = {}
    local file = fs.open(filename, "r")
    if file then
        while true do
            local line = file.readLine()
            if line == nil then
                break
            end
            local slot, blockName = line:match("Slot (%d+): (.+)")
            if slot and blockName then
                blockNames[tonumber(slot)] = blockName
            end
        end
        file.close()
    end
    debugPrint("Block names loaded from file.", colors.Magenta)
    return blockNames
end

-- Function to assign each block a chest and save chest information
local function assignChests(inventory)
    debugPrint("Assigning chests...", colors.Magenta)
    local chestInfo = {}
    for slot, blockName in pairs(inventory) do
        local chest = {
            x = math.random(1, STORAGE_WIDTH),
            y = math.random(1, STORAGE_HEIGHT),
            z = math.random(1, STORAGE_LENGTH)
        }
        chestInfo[blockName] = chest
    end
    saveKnowledge(chestInfo, "chest_info.txt")
    debugPrint("Chests assigned.", colors.Magenta)
end

-- Function to place blocks in assigned chests
local function placeBlocks(inventory, chestInfo)
    debugPrint("Placing blocks in assigned chests...", colors.Red)
    for slot, blockName in pairs(inventory) do
        local chest = chestInfo[blockName]
        if chest then
            -- Go to the assigned chest location
            -- Place the block in the chest
            -- Update knowledge with new information
        else
            debugPrint("No chest assigned for block: " .. blockName, colors.Red)
        end
    end
    debugPrint("Blocks placed in assigned chests.", colors.Red)
end

-- Function to return the turtle to its initial position
local function returnToInitialPosition()
    -- Implement this function as per your requirements
end

-- Function to check for items in the chest below and retrieve them
local function checkAndRetrieveItems()
    -- Implement this function as per your requirements
end

-- Main function to control the turtle's actions
local function main()
    debugPrint("Starting program...", colors.Cyan)

    -- Perform initial startup task if needed
    if not fs.exists("chest_locations.txt") then
        initialStartup()
    else
        debugPrint("Chest locations file found. Skipping initial startup task.", colors.Cyan)
    end

    -- Fill the turtle's inventory
    fillInventory()

    -- Learn block names from an existing file
    local blockNames = loadBlockNames("block_names.txt")

    -- Learn what blocks are in what slots
    local inventory = learnInventory()

    -- Save block names to an output file
    saveBlockNames(inventory)

    -- Assign each block a chest and save chest information
    assignChests(inventory)

    -- Place blocks in assigned chests
    local chestInfo = loadKnowledge("chest_info.txt")
    placeBlocks(inventory, chestInfo)

    -- Check for restarts
    while true do
        local event, key = os.pullEvent("key")
        if event == "key" and key == keys.r then
            print("Restart detected. Do you want to 'Go to home' or 'Terminate'?")
            local choice = io.read()
            if choice == "Go to home" then
                returnToInitialPosition()
            elseif choice == "Terminate" then
                return -- End the program
            end
        end
    end
end

-- Call the main function to start the process
main()