#!/usr/bin/env python3
# Copyright (c) 2026 Krzysztof Rudnicki. MIT licence.
"""Manage the bot, in a browser, on this machine only.

Health, configuration and the photo album in one page. It replaces the
tagger, which served the album half of this on the same port. Everything it
did is still here -- the roster form, the tagging checkboxes, the add-person
box and the ``--untagged`` filter -- and the routes behind them now live in
``signal_bot/manage/`` where the coverage gate can see them.

Started by hand and stopped again, deliberately. This page can rewrite
``.env`` -- the file that decides which groups the bot answers in and who may
add it to one -- and a unit would keep that writable on loopback all day for
the sake of a bookmark.

    ./web.sh                             # the configured pack
    ./web.sh --dir ~/pack --port 8140
    ./web.sh --import ~/photos           # dedup, strip and import, then serve
    ./web.sh --import ~/photos --dry-run # the report, changing nothing
    ./web.sh --untagged                  # only items with no tags yet

It prints the album summary when it stops: how many items are untagged, and
how many photos each command would have. A command with zero is dead on
arrival, and this is where that shows up rather than in the group.
"""

from __future__ import annotations

# Importing this sets up .venv if the interpreter running us cannot import
# what follows. It has to come first, and it is an import rather than a call
# so that nothing here needs an E402 suppression.
from venv_bootstrap import REPO_ROOT

import argparse
import sys
import webbrowser
from pathlib import Path
from typing import TYPE_CHECKING, Final

import httpx
import uvicorn

from signal_bot.config_env import load_config
from signal_bot.custom_aliases import default_path as default_aliases_path
from signal_bot.manage.app import build_app
from signal_bot.manage.deps import ManageDeps
from signal_bot.manage.routes_suggestions import default_export_path
from signal_bot.media_strip import ExiftoolStripper
from signal_bot.pack import default_dirs
from signal_bot.pack_album import Album
from signal_bot.pack_import import plan_import, run_import
from signal_bot.portcheck import assert_port_free

if TYPE_CHECKING:
    from signal_bot.pack_report import ImportReport

DEFAULT_PORT: Final = 8140
DIST: Final = REPO_ROOT / "web" / "dist"


def _arguments() -> argparse.Namespace:
    """What the launcher was asked to do."""
    parser = argparse.ArgumentParser(
        description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter
    )
    parser.add_argument("--dir", type=Path, default=None, help="the pack directory")
    parser.add_argument("--port", type=int, default=DEFAULT_PORT)
    parser.add_argument(
        "--import", dest="source", type=Path, default=None, help="import media from here first"
    )
    parser.add_argument(
        "--dry-run", action="store_true", help="report what --import would do, change nothing"
    )
    parser.add_argument(
        "--untagged", action="store_true", help="present only items with no tags yet"
    )
    parser.add_argument("--no-open", action="store_true", help="do not open a browser")
    return parser.parse_args()


def main() -> int:
    """Serve the management page until it is stopped, then print the summary."""
    arguments = _arguments()
    directory = arguments.dir or default_dirs()[0][0]
    if arguments.source is not None:
        report = _import(arguments.source, directory, dry_run=arguments.dry_run)
        sys.stdout.write("\n".join(report.lines()) + "\n\n")
    if arguments.dry_run:
        # Nothing was written, so there is nothing to serve and no reason to
        # open a browser at a server this run is not going to start.
        return 0

    # Before the browser opens, not after: a stale instance on this port
    # should be a refusal naming the process, not a tab showing somebody
    # else's album. signal_bot/__main__.py does the same for the bot.
    assert_port_free("127.0.0.1", arguments.port)

    album = Album(directory, untagged_only=arguments.untagged)
    settings = load_config()
    deps = ManageDeps(
        config=settings,
        env_path=REPO_ROOT / ".env",
        dist_dir=DIST,
        album=album,
        # database_path is relative by default and the bot runs from the
        # repo root; joining an absolute one leaves it alone.
        database_path=REPO_ROOT / settings.database_path,
        export_path=default_export_path(),
        aliases_path=default_aliases_path(),
        client=httpx.AsyncClient(),
        port=arguments.port,
    )
    url = f"http://127.0.0.1:{arguments.port}/"
    sys.stdout.write(f"== {len(album.files)} item(s) in {directory}\n")
    sys.stdout.write(f"== open {url} -- ctrl-c here when you are done\n")
    if not arguments.no_open:
        webbrowser.open(url)
    uvicorn.run(build_app(deps), host="127.0.0.1", port=arguments.port, log_level="warning")
    sys.stdout.write("\n".join(album.summary()) + "\n")
    return 0


def _import(source: Path, directory: Path, *, dry_run: bool) -> ImportReport:
    """Import a folder, or work out what importing it would do."""
    stripper = ExiftoolStripper()
    if dry_run:
        return plan_import(source, directory, stripper)
    return run_import(source, directory, stripper)


if __name__ == "__main__":
    raise SystemExit(main())