serverBlockValues

local filename = "block_data.txt"
local communicator = 0  -- Initially set to 0

-- Function to read data from file
local function readDataFromFile()
    local file = fs.open(filename, "r") -- Open file in read mode
    if file then
        local data = textutils.unserialize(file.readAll()) -- Read all content and deserialize
        file.close() -- Close the file
        return data
    else
        return nil
    end
end

-- Function to display menu and get user choice
local function getMenuChoice()
    print("Modify Block Data Menu:")
    print("1. Add block")
    print("2. Remove block")
    print("3. Modify block value")
    print("4. Save and send data")
    print("5. Exit without saving")
    write("Enter your choice: ")
    return tonumber(read())
end

-- Function to add a block
local function addBlock(data)
    write("Enter block name: ")
    local blockName = read()
    write("Enter block value: ")
    local blockValue = tonumber(read())
    table.insert(data.blockList, blockName)
    table.insert(data.valueList, blockValue)
    print("Block added successfully.")
end

-- Function to remove a block
local function removeBlock(data)
    print("Current block list:")
    for i, blockName in ipairs(data.blockList) do
        print(i .. ". " .. blockName)
    end
    write("Enter the index of the block to remove: ")
    local index = tonumber(read())
    if index and index >= 1 and index <= #data.blockList then
        table.remove(data.blockList, index)
        table.remove(data.valueList, index)
        print("Block removed successfully.")
    else
        print("Invalid index.")
    end
end

-- Function to modify block value
local function modifyBlockValue(data)
    print("Current block list:")
    for i, blockName in ipairs(data.blockList) do
        print(i .. ". " .. blockName .. " (Value: " .. data.valueList[i] .. ")")
    end
    write("Enter the index of the block to modify: ")
    local index = tonumber(read())
    if index and index >= 1 and index <= #data.blockList then
        write("Enter the new value for the block: ")
        local newValue = tonumber(read())
        if newValue then
            data.valueList[index] = newValue
            print("Block value modified successfully.")
        else
            print("Invalid value.")
        end
    else
        print("Invalid index.")
    end
end

-- Function to write data to file and send it to a computer
local function writeDataToFileAndSend(data)
    local file = fs.open(filename, "w") -- Open file in write mode
    if file then
        file.write(textutils.serialize(data)) -- Serialize data and write to file
        file.close() -- Close the file

        -- Send the file to the computer named "communicator"
        if communicator ~= 0 then
            local fileContent = fs.open(filename, "r")
            if fileContent then
                local content = fileContent.readAll()
                fileContent.close()
                rednet.send(communicator, content)
                print("Data saved and sent to computer 'communicator' successfully.")
            else
                print("Failed to read data from file.")
            end
        else
            print("Computer 'communicator' not set.")
        end

        return true
    else
        return false
    end
end

-- Main function
local function main()
    -- Check if file exists, if not, create it with empty data
    if not fs.exists(filename) then
        local emptyData = {blockList = {}, valueList = {}}
        if not writeDataToFileAndSend(emptyData) then
            print("Failed to create file.")
            return
        end
    end

    -- Read data from file
    local data = readDataFromFile()

    if not data then
        print("Failed to read data from file.")
        return
    end

    while true do
        local choice = getMenuChoice()

        if choice == 1 then
            addBlock(data)
        elseif choice == 2 then
            removeBlock(data)
        elseif choice == 3 then
            modifyBlockValue(data)
        elseif choice == 4 then
            if writeDataToFileAndSend(data) then
                print("Data saved successfully.")
            else
                print("Failed to save data.")
            end
        elseif choice == 5 then
            print("Exiting without saving.")
            break
        else
            print("Invalid choice. Please enter a number between 1 and 5.")
        end
    end
end

-- Run the main function
main()