"""Read-only look at the Mercado Pago account behind MP_ACCESS_TOKEN.

    python -m app.mercadopago_probe [--bin 503143] [--valor 50]

Run from the api container's console (Portainer > Containers > api >
Console). It creates nothing and charges nothing: it asks Mercado Pago which
account the token belongs to, which card methods the account accepts, and how
it classifies a card number's first digits (type, issuer, instalments). That
is what payment errors such as 10111 (issuer) and 10113 (method excluded by a
rule) depend on.
"""
import argparse
import os
import sys

import httpx

from .core.secrets import load as load_secret_files

API = 'https://api.mercadopago.com'


def main(argv=None):
    parser = argparse.ArgumentParser(prog='python -m app.mercadopago_probe')
    parser.add_argument('--bin', default='503143', help="the card's first six digits (default: the Mastercard test card)")
    parser.add_argument('--valor', default='50', help='amount in reais for the instalment lookup')
    args = parser.parse_args(argv)
    load_secret_files()
    token = os.environ.get('MP_ACCESS_TOKEN', '')
    if not token:
        print('MP_ACCESS_TOKEN is not set in this container.')
        return 1
    http = httpx.Client(base_url=API, timeout=15, headers={'Authorization': f'Bearer {token}'})

    print(f"Token: {'TEST' if token.startswith('TEST-') else 'produção'}")
    me = http.get('/users/me')
    if me.status_code == 200:
        user = me.json()
        tags = user.get('tags') or []
        print(f"Conta: id {user.get('id')} · {user.get('nickname')} · site {user.get('site_id')} · "
              f"usuário de teste: {'sim' if 'test_user' in tags else 'não'} · tags {tags}")
    else:
        print(f'Conta: HTTP {me.status_code} {me.text[:200]}')

    methods = http.get('/v1/payment_methods')
    if methods.status_code == 200:
        cards = [m for m in methods.json() if m.get('payment_type_id') in ('credit_card', 'debit_card')]
        print('Cartões aceitos pela conta:')
        for m in cards:
            print(f"  {m.get('id'):<12} {m.get('payment_type_id'):<12} {m.get('status')}")
    else:
        print(f'Meios de pagamento: HTTP {methods.status_code} {methods.text[:200]}')

    quote = http.get('/v1/payment_methods/installments', params={'bin': args.bin, 'amount': args.valor})
    if quote.status_code == 200 and quote.json():
        print(f'BIN {args.bin}:')
        for option in quote.json():
            issuer = option.get('issuer') or {}
            counts = [c.get('installments') for c in option.get('payer_costs') or []]
            print(f"  meio {option.get('payment_method_id')} · tipo {option.get('payment_type_id')} · "
                  f"emissor {issuer.get('id')} ({issuer.get('name')}) · parcelas {counts}")
    else:
        print(f'BIN {args.bin}: HTTP {quote.status_code} {quote.text[:300]}')
    return 0


if __name__ == '__main__':
    sys.exit(main())