password_manager_json_update.py

# save passwords in json file (data.json) and better UI

from tkinter import *
from tkinter import messagebox
import random
import json
import pyperclip  # use to copy something

FONT = ("times new roman", 14)
CANVAS_BACKGROUND = "#186f65"
BUTTON_COLOR = "#c1d8c3"


# ----------------- PASSWORD GENERATOR ---------------------
def generate_password():
    letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
               'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
               'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']
    numbers = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
    symbols = ['!', '#', '$', '%', '&', '(', ')', '*', '+']

    nr_letters = random.randint(5, 10)
    nr_symbols = random.randint(2, 4)
    nr_numbers = random.randint(2, 4)

    password_list = []

    [password_list.append(random.choice(letters)) for _ in range(nr_letters)]
    [password_list.append(random.choice(symbols)) for _ in range(nr_symbols)]
    [password_list.append(random.choice(numbers)) for _ in range(nr_numbers)]

    # print(f"{''.join(password_list)}")

    random.shuffle(password_list)

    password = ""
    for char in password_list:
        password += char

    password_entry.insert(END, password)
    pyperclip.copy(password)


# ------------------- SAVE PASSWORD --------------------
def save_password():
    website = website_entry.get()
    email = email_entry.get()
    password = password_entry.get()

    # create a dictionary
    new_data = {
        website: {
            "email": email,
            "password": password,
        }
    }

    retry = messagebox.askretrycancel(title="information", message="Before saving password use search button to "
                                                                   "confirm that website does not already exist in "
                                                                   "data file, otherwise data will be overwritten on "
                                                                   "that website.")

    if not retry:   # retry returns true if retry button is clicked
        if not website or not email or not password:
            messagebox.showerror(title="OOPS", message="Please don't leave any field empty.")
        else:
            is_ok = messagebox.askokcancel(title=website, message=f"These are the details entered:" + "\n" +
                                                                  f"\nEmail: {email}" + f"\nPassword:  {password}" + "\n" +
                                                                  "\nIs is ok to save?")
            if is_ok:
                try:
                    # open json file in read mode and update data with new data
                    with open("data.json", "r") as data_file:
                        data = json.load(data_file)  # read json data

                except FileNotFoundError:
                    # open json file in write mode and add updated data
                    with open("data.json", "w") as data_file:
                        json.dump(new_data, data_file, indent=4)

                except json.decoder.JSONDecodeError:
                    with open("data.json", "w") as data_file:
                        json.dump(new_data, data_file, indent=4)

                else:
                    # update json data
                    data.update(new_data)
                    # write updated data
                    with open("data.json", "w") as data_file:
                        json.dump(data, data_file, indent=4)

                finally:
                    website_entry.delete(0, END)
                    password_entry.delete(0, END)


# --------------------- search from data --------------------
def search_data():
    try:
        with open("data.json", "r") as data_file:
            search = json.load(data_file)
            website_name = website_entry.get()
            website_search = search[website_name]
    except FileNotFoundError:
        messagebox.showerror(title="OOPS", message=" Data file does not exist.")

    except KeyError:  # when user type a website which does not exist in json file and hit search button
        messagebox.showerror(title="OOPS", message=f"Details of {website_name} website does not exist.")

    except json.decoder.JSONDecodeError:  # if json file exist but has no data inside and user hit search button
        messagebox.showwarning(title="OOPS", message="File has no data")
    else:
        messagebox.showinfo(title=website_name, message=f"website data found\n\nemail:  {website_search['email']}"
                                                        f"\npassword:  {website_search['password']}")
        if website_name in search:      # membership operator in dict search for keys
            is_yes = messagebox.askyesno(title=f"⚠️{website_name}", message=f"website '{website_name}' already exist in data. Do you want to overwrite the data?")
            if not is_yes:
                website_entry.delete(0, END)
                password_entry.delete(0, END)


# -------------------- UI SETUP --------------------

window = Tk()
window.title("Password Manager")
window.config(pady=50, padx=50)
window.resizable(0, 0)

canvas = Canvas(width=200, height=200, bg=CANVAS_BACKGROUND, highlightthickness=0)
logo_img = PhotoImage(file="logo.png")
canvas.create_image(100, 100, image=logo_img)
canvas.grid(row=0, column=1, pady=20)

# label
website_label = Label(pady=5, text="website:", font=FONT)
website_label.grid(row=1, column=0)  # sticky="e"

email_label = Label(pady=5, text="email id/username:", font=FONT)
email_label.grid(row=2, column=0)

password_label = Label(pady=5, text="password:", font=FONT)
password_label.grid(row=3, column=0)  # sticky="e"

# entry
website_entry = Entry(width=34, font=FONT)
website_entry.focus()
website_entry.grid(row=1, column=1, columnspan=2, sticky="w")

email_entry = Entry(width=50, font=FONT)
email_entry.insert(END, "yourmail@gmail.com")
email_entry.grid(row=2, column=1, columnspan=2)

password_entry = Entry(width=34, font=FONT)
password_entry.grid(row=3, column=1, sticky="w")

# buttons
password_generate_button = Button(text="generate password", bg=BUTTON_COLOR, font=("times new roman", 13,), command=generate_password)
password_generate_button.grid(row=3, column=2)

add_button = Button(text="add", width=50, bg=BUTTON_COLOR, font=("times new roman", 13,), command=save_password)
add_button.grid(row=4, column=1, columnspan=2)

search_button = Button(text="search", width=14, bg=BUTTON_COLOR, font=("times new roman", 13,), command=search_data)
search_button.grid(row=1, column=2)

window.mainloop()