RECOVERY CLIENT

-- Client Program

-- Function to find and return the modem peripheral
local function findModem()
    for _, side in ipairs(peripheral.getNames()) do
        if peripheral.getType(side) == "modem" then
            return side
        end
    end
    return nil
end

local modemSide = findModem()
if not modemSide then
    print("Error: No modem found. Please attach a modem.")
    return
end

rednet.open(modemSide)

-- Function to read file content
local function readFileContent(filePath)
    local file = fs.open(filePath, "r")
    if file then
        local content = file.readAll()
        file.close()
        return content
    end
    return nil
end

-- Prompt for server ID
print("Enter server ID: ")
local serverID = tonumber(read())

-- Prompt for file details
print("Enter file name: ")
local fileName = read()

-- Check if the file exists
local filePath = shell.resolve(fileName)
local fileExists = fs.exists(filePath)
if not fileExists then
    print("File not found.")
    return
end

-- Get file size
local fileSize = fs.getSize(filePath)

-- Send file content to server with confirmation request
local fileContent = readFileContent(filePath)
if fileContent then
    local message = {
        fileName = fileName,
        fileSize = fileSize,
        fileContent = fileContent
    }

    rednet.send(serverID, message, "file_transfer")
    print("File sent to server.")

    -- Wait for confirmation response
    local senderID, confirmation, protocol = rednet.receive("confirmation")

    -- Display server's choice
    if confirmation and confirmation.status then
        print("Server's choice: " .. confirmation.status)
    else
        print("No confirmation received from server.")
    end
end