#!/usr/bin/env python3
"""
Usage: python create_api_key.py <email> <name>
Creates an API key for the given user and stores it in api_keys.json.
"""
import json
import os
import secrets
import sys
from datetime import datetime

KEYS_FILE = os.path.join(os.path.dirname(__file__), "api_keys.json")


def create_key(email: str, name: str) -> str:
    keys: dict = {}
    if os.path.exists(KEYS_FILE):
        with open(KEYS_FILE) as f:
            keys = json.load(f)

    # Check for duplicate email
    for k, v in keys.items():
        if v["email"] == email:
            print(f"[!] A key already exists for {email}: {k}")
            print("    Delete it from api_keys.json first if you want a new one.")
            sys.exit(1)

    key = "tk_" + secrets.token_hex(24)
    keys[key] = {
        "email": email,
        "name": name,
        "created_at": datetime.now().isoformat(),
    }

    with open(KEYS_FILE, "w") as f:
        json.dump(keys, f, indent=2)

    print(f"\n✓ API key created for {name} <{email}>")
    print(f"\n  Key: {key}\n")
    print("  Share the key with the user — it cannot be recovered later.")
    return key


if __name__ == "__main__":
    if len(sys.argv) != 3:
        print("Usage: python create_api_key.py <email> <name>")
        sys.exit(1)
    create_key(sys.argv[1], sys.argv[2])