#!/bin/python3

"""
Arguments:
    name
    exec location
    [icon path]
"""

import os
from sys import stderr
import argparse

class Args(argparse.Namespace):
    NAME_OF_ENTRY: str = ""
    EXEC_PATH: str = ""
    icon_path: str | None = None
    argsparser: argparse.ArgumentParser

    def __init__(self):
        super().__init__()
        self.argsparser = argparse.ArgumentParser("dte.py")
        _ = self.argsparser.add_argument("NAME_OF_ENTRY")
        _ = self.argsparser.add_argument("EXEC_PATH")
        _ = self.argsparser.add_argument("--icon-path", "-i")
        self = self.argsparser.parse_args(namespace=self)


args = Args()

name: str = args.NAME_OF_ENTRY
path: str = args.EXEC_PATH
icon_path: str | None = args.icon_path
entry_path: str = os.path.expanduser(f"~/.local/share/applications/{name}.desktop")
entry_lines = [
    "[Desktop Entry]\n",
    "Type=Application\n",
    f"Name={name}\n",
    f"Exec={path}\n"
]
if icon_path is not None:
    entry_lines.append(f"Icon={icon_path}\n")

msg_str: str = f"This will create the following destop entry:\n\n"
for line in entry_lines:
    msg_str += line
msg_str += f"\nIn {entry_path}\n"
print(msg_str)

while True:
    sure: str = input("Continue? (y/n): ").strip().lower()
    if sure == "y" or sure == "yes":
        break
    elif sure == "n" or sure == "no":
        exit(0)

try:
    with open(entry_path, "r") as f:
        print("Desktop entry already exists");
        while True:
            choice = input(f"Overwrite entry at {entry_path}? (y/n): ").strip().lower()
            if choice == "y":
                try:
                    os.remove(entry_path)
                    break
                except Exception as e:
                    print(f"Failed to remove entry. Exception: {e}", file=stderr)
                    exit(1)
            elif choice == "n":
                exit(0)
except FileNotFoundError:
    pass


with open(entry_path, "x") as f:
    f.writelines(entry_lines)