"""Console script for unifi_protect_backup."""

import sys
import re

import click
from aiorun import run  # type: ignore
from dateutil.relativedelta import relativedelta

from uiprotect.data.types import SmartDetectObjectType, SmartDetectAudioType

from unifi_protect_backup import __version__
from unifi_protect_backup.unifi_protect_backup_core import UnifiProtectBackup
from unifi_protect_backup.utils import human_readable_to_float

DETECTION_TYPES = ["motion", "ring", "line", "fingerprint", "nfc"]
DETECTION_TYPES += [t for t in SmartDetectObjectType.values() if t not in SmartDetectAudioType.values()]
DETECTION_TYPES += [f"{t}" for t in SmartDetectAudioType.values()]


def _parse_detection_types(ctx, param, value):
    # split columns by ',' and remove whitespace
    types = [t.strip() for t in value.split(",")]

    # validate passed columns
    for t in types:
        if t not in DETECTION_TYPES:
            raise click.BadOptionUsage("detection-types", f"`{t}` is not an available detection type.", ctx)

    return types


def parse_rclone_retention(ctx, param, retention) -> relativedelta | None:
    """Parse the rclone `retention` parameter into a relativedelta which can then be used to calculate datetimes."""
    if retention is None:
        return None

    matches = {k: int(v) for v, k in re.findall(r"([\d]+)(ms|s|m|h|d|w|M|y)", retention)}

    # Check that we matched the whole string
    if len(retention) != len("".join([f"{v}{k}" for k, v in matches.items()])):
        raise click.BadParameter("See here for expected format: https://rclone.org/docs/#time-option")

    return relativedelta(
        microseconds=matches.get("ms", 0) * 1000,
        seconds=matches.get("s", 0),
        minutes=matches.get("m", 0),
        hours=matches.get("h", 0),
        days=matches.get("d", 0),
        weeks=matches.get("w", 0),
        months=matches.get("M", 0),
        years=matches.get("y", 0),
    )


@click.command(context_settings=dict(max_content_width=100))
@click.version_option(__version__)
@click.option("--address", required=True, envvar="UFP_ADDRESS", help="Address of Unifi Protect instance")
@click.option("--port", default=443, envvar="UFP_PORT", show_default=True, help="Port of Unifi Protect instance")
@click.option("--username", required=True, envvar="UFP_USERNAME", help="Username to login to Unifi Protect instance")
@click.option("--password", required=True, envvar="UFP_PASSWORD", help="Password for Unifi Protect user")
@click.option(
    "--verify-ssl/--no-verify-ssl",
    default=True,
    show_default=True,
    envvar="UFP_SSL_VERIFY",
    help="Set if you do not have a valid HTTPS Certificate for your instance",
)
@click.option(
    "--rclone-destination",
    required=True,
    envvar="RCLONE_DESTINATION",
    help="`rclone` destination path in the format {rclone remote}:{path on remote}."
    " E.g. `gdrive:/backups/unifi_protect`",
)
@click.option(
    "--retention",
    default="7d",
    show_default=True,
    envvar="RCLONE_RETENTION",
    help="How long should event clips be backed up for. Format as per the `--max-age` argument of `rclone` "
    "(https://rclone.org/filtering/#max-age-don-t-transfer-any-file-older-than-this)",
    callback=parse_rclone_retention,
)
@click.option(
    "--missing-range",
    default=None,
    envvar="MISSING_RANGE",
    help="How far back should missing events be checked for. Defaults to the same as the retention time. "
    "Format as per the `--max-age` argument of `rclone` "
    "(https://rclone.org/filtering/#max-age-don-t-transfer-any-file-older-than-this)",
    callback=parse_rclone_retention,
)
@click.option(
    "--rclone-args",
    default="",
    envvar="RCLONE_ARGS",
    help="Optional extra arguments to pass to `rclone rcat` directly. Common usage for this would "
    "be to set a bandwidth limit, for example.",
)
@click.option(
    "--rclone-purge-args",
    default="",
    envvar="RCLONE_PURGE_ARGS",
    help="Optional extra arguments to pass to `rclone delete` directly. Common usage for this would "
    "be to execute a permanent delete instead of using the recycle bin on a destination. "
    "Google Drive example: `--drive-use-trash=false`",
)
@click.option(
    "--detection-types",
    envvar="DETECTION_TYPES",
    default=",".join(DETECTION_TYPES),
    show_default=True,
    help="A comma separated list of which types of detections to backup. "
    f"Valid options are: {', '.join([f'`{t}`' for t in DETECTION_TYPES])}",
    callback=_parse_detection_types,
)
@click.option(
    "--ignore-camera",
    "ignore_cameras",
    multiple=True,
    envvar="IGNORE_CAMERAS",
    help="IDs of cameras for which events should not be backed up. Use multiple times to ignore "
    "multiple IDs. If being set as an environment variable the IDs should be separated by whitespace. "
    "Alternatively, use a Unifi user with a role which has access restricted to the subset of cameras "
    "that you wish to backup.",
)
@click.option(
    "--camera",
    "cameras",
    multiple=True,
    envvar="CAMERAS",
    help="IDs of *ONLY* cameras for which events should be backed up. Use multiple times to include "
    "multiple IDs. If being set as an environment variable the IDs should be separated by whitespace. "
    "Alternatively, use a Unifi user with a role which has access restricted to the subset of cameras "
    "that you wish to backup.",
)
@click.option(
    "--file-structure-format",
    envvar="FILE_STRUCTURE_FORMAT",
    default="{camera_name}/{event.start:%Y-%m-%d}/{event.end:%Y-%m-%dT%H-%M-%S} {detection_type}.mp4",
    show_default=True,
    help="A Python format string used to generate the file structure/name on the rclone remote."
    "For details of the fields available, see the projects `README.md` file.",
)
@click.option(
    "-v",
    "--verbose",
    count=True,
    help="How verbose the logging output should be."
    """
    \n
    None: Only log info messages created by `unifi-protect-backup`, and all warnings

    -v: Only log info & debug messages created by `unifi-protect-backup`, and all warnings

    -vv: Log info & debug messages created by `unifi-protect-backup`, command output, and all warnings

    -vvv Log debug messages created by `unifi-protect-backup`, command output, all info messages, and all warnings

    -vvvv: Log debug messages created by `unifi-protect-backup` command output, all info messages,
all warnings, and websocket data

    -vvvvv: Log websocket data, command output, all debug messages, all info messages and all warnings
""",
)
@click.option(
    "--sqlite_path",
    default="events.sqlite",
    envvar="SQLITE_PATH",
    help="Path to the SQLite database to use/create",
)
@click.option(
    "--color-logging/--plain-logging",
    default=False,
    show_default=True,
    envvar="COLOR_LOGGING",
    help="Set if you want to use color in logging output",
)
@click.option(
    "--download-buffer-size",
    default="512MiB",
    show_default=True,
    envvar="DOWNLOAD_BUFFER_SIZE",
    help='How big the download buffer should be (you can use suffixes like "B", "KiB", "MiB", "GiB")',
    callback=lambda ctx, param, value: int(human_readable_to_float(value)),
)
@click.option(
    "--purge_interval",
    default="1d",
    show_default=True,
    envvar="PURGE_INTERVAL",
    help="How frequently to check for file to purge.\n\nNOTE: Can create a lot of API calls, so be careful if "
    "your cloud provider charges you per api call",
    callback=parse_rclone_retention,
)
@click.option(
    "--apprise-notifier",
    "apprise_notifiers",
    multiple=True,
    envvar="APPRISE_NOTIFIERS",
    help="""\b
Apprise URL for sending notifications.
E.g: ERROR,WARNING=tgram://[BOT KEY]/[CHAT ID]

You can use this parameter multiple times to use more than one notification platform.

The following notification tags are available (corresponding to the respective logging levels):

    ERROR, WARNING, INFO, DEBUG, EXTRA_DEBUG, WEBSOCKET_DATA

If no tags are specified, it defaults to ERROR

More details about supported platforms can be found here: https://github.com/caronc/apprise""",
)
@click.option(
    "--skip-missing",
    default=False,
    show_default=True,
    is_flag=True,
    envvar="SKIP_MISSING",
    help="""\b
If set, events which are 'missing' at the start will be ignored.
Subsequent missing events will be downloaded (e.g. a missed event)
""",
)
@click.option(
    "--download-rate-limit",
    default=None,
    show_default=True,
    envvar="DOWNLOAD_RATELIMIT",
    type=float,
    help="Limit how events can be downloaded in one minute. Disabled by default",
)
@click.option(
    "--max-event-length",
    default=2 * 60 * 60,
    show_default=True,
    envvar="MAX_EVENT_LENGTH",
    type=int,
    help="Only download events shorter than this maximum length, in seconds",
)
@click.option(
    "--experimental-downloader",
    "use_experimental_downloader",
    default=False,
    show_default=True,
    is_flag=True,
    envvar="EXPERIMENTAL_DOWNLOADER",
    help="""\b
If set, a new experimental download mechanism will be used to match
what the web UI does. This might be more stable if you are experiencing
a lot of failed downloads with the default downloader.
""",
)
@click.option(
    "--parallel-uploads",
    default=1,
    show_default=True,
    envvar="PARALLEL_UPLOADS",
    type=int,
    help="Max number of parallel uploads to allow",
)
def main(**kwargs):
    """Python based tool for backing up Unifi Protect event clips as they occur."""
    try:
        # Validate only one of the camera select arguments was given
        if kwargs.get("cameras") and kwargs.get("ignore_cameras"):
            click.echo(
                "Error: --camera and --ignore-camera options are mutually exclusive. "
                "Please use only one of these options.",
                err=True,
            )
            raise SystemExit(200)  # throw 200 = arg error, service will not be restarted (docker)

        if kwargs.get("missing_range") is None:
            kwargs["missing_range"] = kwargs.get("retention")

        # Only create the event listener and run if validation passes
        event_listener = UnifiProtectBackup(**kwargs)
        run(event_listener.start(), stop_on_unhandled_errors=True)
    except SystemExit as e:
        sys.exit(e.code)
    except Exception as e:
        click.echo(f"Error: {str(e)}", err=True)
        sys.exit(1)


if __name__ == "__main__":
    main()  # pragma: no cover