from io import BytesIO
from serenitas.utils.env import DAILY_DIR
import datetime
from csv_headers.citco import GIL, GTL
from serenitas.utils.remote import SftpClient
from serenitas.analytics.dates import prev_business_day


def concat_csv(file_type, date):
    match file_type:
        case "trade":
            file_tag = "innocap_serenitas_trades"
        case "instrument":
            file_tag = "i.innocap_serenitas"
    fname = f"Innocap_ISOSEL_{file_type}_{date:%Y-%m-%d}.csv"
    buf = BytesIO()
    buf.write((",".join(GTL if file_type == "trade" else GIL) + "\n").encode())
    for f in (DAILY_DIR / str(date)).iterdir():
        if f.is_file() and f.name.startswith(file_tag):
            with f.open("rb") as fh:
                next(fh)  # Don't concat headers
                buf.write(fh.read())
    return buf.getvalue(), fname


def main(date, upload):
    for file_type in ("trade", "instrument"):
        buf, fname = concat_csv(file_type, date)
        dest = DAILY_DIR / str(date) / fname
        dest.write_bytes(buf)
        if upload:
            innocap_sftp = SftpClient.from_creds("innocap", folder="Innocap")
            innocap_sftp.put(buf, fname)


if __name__ == "__main__":
    import argparse

    parser = argparse.ArgumentParser()
    parser.add_argument(
        "cob",
        nargs="?",
        type=datetime.date.fromisoformat,
        default=prev_business_day(datetime.date.today()),
        help="file transfer date",
    )
    parser.add_argument(
        "--no-upload",
        "-n",
        action="store_true",
        default=False,
        help="uploads to citco and innocap",
    )
    args = parser.parse_args()

    main(args.cob, not args.no_upload)