bank

-- bank.lua

local accounts = {}

local function saveAccounts()
    local file = fs.open("accounts", "w")
    file.write(textutils.serialize(accounts))
    file.close()
end

local function loadAccounts()
    if fs.exists("accounts") then
        local file = fs.open("accounts", "r")
        accounts = textutils.unserialize(file.readAll())
        file.close()
    end
end

local function createAccount(name)
    if accounts[name] then
        print("Compte déjà existant!")
        return
    end
    accounts[name] = 0
    saveAccounts()
    print("Compte créé pour " .. name)
end

local function deposit(name, amount)
    if not accounts[name] then
        print("Compte non trouvé!")
        return
    end
    accounts[name] = accounts[name] + amount
    saveAccounts()
    print(amount .. " déposé. Nouveau solde: " .. accounts[name])
end

local function withdraw(name, amount)
    if not accounts[name] then
        print("Compte non trouvé!")
        return
    end
    if accounts[name] < amount then
        print("Fonds insuffisants!")
        return
    end
    accounts[name] = accounts[name] - amount
    saveAccounts()
    print(amount .. " retiré. Nouveau solde: " .. accounts[name])
end

local function checkBalance(name)
    if not accounts[name] then
        print("Compte non trouvé!")
        return
    end
    print("Solde de " .. name .. ": " .. accounts[name])
end

local function drawMenu()
    term.clear()
    term.setCursorPos(1, 1)
    print("Banque")
    print("1. Créer Compte")
    print("2. Déposer")
    print("3. Retirer")
    print("4. Consulter Solde")
    print("Selection: ")
end

local function main()
    loadAccounts()
    while true do
        drawMenu()
        local choice = read()

        if choice == "1" then
            print("Nom du compte: ")
            local name = read()
            createAccount(name)
        elseif choice == "2" then
            print("Nom du compte: ")
            local name = read()
            print("Montant à déposer: ")
            local amount = tonumber(read())
            deposit(name, amount)
        elseif choice == "3" then
            print("Nom du compte: ")
            local name = read()
            print("Montant à retirer: ")
            local amount = tonumber(read())
            withdraw(name, amount)
        elseif choice == "4" then
            print("Nom du compte: ")
            local name = read()
            checkBalance(name)
        else
            print("Option invalide")
        end
        sleep(2)
    end
end

main()