# Copyright (c) 2026 Krzysztof Rudnicki. MIT licence.
"""!good bot: a reaction on the compliment, and not a word in the group."""

from __future__ import annotations

import datetime as dt
import json
from typing import TYPE_CHECKING

import pytest

from signal_bot.animals import ALIAS_FILE
from signal_bot.context import CommandContext
from signal_bot.decorators import cooldown
from signal_bot.dispatcher import Dispatcher
from signal_bot.good_bot_command import (
    COMMAND_NAME,
    EMOJI,
    pick,
    register_good_bot_command,
)
from signal_bot.help_command import GROUPS
from signal_bot.models import parse_envelope
from signal_bot.registry import CommandRegistry
from signal_bot.registry_holder import RegistryHolder
from tests.conftest import WATCHED_GROUP, envelope

if TYPE_CHECKING:
    from signal_bot.config import Config
    from signal_bot.discovery import GroupDirectory
    from signal_bot.store import Store
    from signal_bot.transport_fake import FakeTransport

ALIASES = {COMMAND_NAME: ["!good bot", "!dobry bot", "!goodbot"]}
SENT_AT = 1719177917717
DRAWS = 200
NOW = dt.datetime(2026, 9, 4, 12, 0, tzinfo=dt.UTC)


def _registry() -> CommandRegistry:
    registry = CommandRegistry()
    register_good_bot_command(registry, aliases=ALIASES)
    return registry


async def _run(
    store: Store, transport: FakeTransport, config: Config, text: str, *, timestamp: int
) -> None:
    """Type one line at the bot through the real resolver and handler."""
    message = parse_envelope(envelope(text=text, timestamp=timestamp))
    assert message is not None
    resolved = _registry().resolve_with_args(text, WATCHED_GROUP)
    assert resolved is not None
    ctx = CommandContext(
        message=message,
        group_id=WATCHED_GROUP,
        transport=transport,
        store=store,
        config=config,
        command_name=resolved.command.name,
        now=1_000.0,
        day="2026-09-04",
        args=resolved.args,
    )
    await resolved.command.handler(ctx)


@pytest.mark.parametrize(
    "text", ["!good bot", "!Good Bot", "!dobry bot", "!goodbot", " !good bot "]
)
async def test_the_compliment_gets_an_emoji_on_itself_and_no_reply(
    store: Store, transport: FakeTransport, config: Config, text: str
) -> None:
    await _run(store, transport, config, text, timestamp=SENT_AT)

    (reaction,) = transport.reactions
    assert reaction.emoji in EMOJI
    # On the asker's message, in the asker's group: what a quote would name.
    assert (reaction.recipient, reaction.target_author) == (WATCHED_GROUP, "uuid-alice")
    assert reaction.timestamp == SENT_AT
    assert transport.sent == []


async def test_a_message_that_cannot_be_pointed_at_gets_the_emoji_as_text(
    store: Store, transport: FakeTransport, config: Config
) -> None:
    """The visible degradation, the same one reply() makes when it cannot quote."""
    await _run(store, transport, config, "!good bot", timestamp=0)

    assert transport.reactions == []
    (sent,) = transport.sent
    assert sent.text in EMOJI
    assert sent.quote is None


def test_only_the_two_words_together_are_the_command() -> None:
    """The bare first word is nothing, and so is a compliment with a tail."""
    registry = _registry()
    assert registry.resolve_with_args("!good", WATCHED_GROUP) is None
    assert registry.resolve_with_args("!good bot!!!", WATCHED_GROUP) is None
    assert registry.resolve_with_args("!good bot thanks", WATCHED_GROUP) is None
    assert registry.resolve_with_args("!goodbot", WATCHED_GROUP) is not None


def test_every_emoji_in_the_set_comes_up() -> None:
    """A draw over seven; two hundred draws that miss one would be a broken draw."""
    assert {pick() for _ in range(DRAWS)} == set(EMOJI)
    assert pick(("x",)) == "x"


def test_the_shipped_aliases_are_command_words_and_the_first_is_the_two_word_one() -> None:
    """_repo_vocabulary() subtracts these from the personal-data gate.

    The first alias is what !pomoc prints, and "!good bot" is the spelling
    the group asked for; the one-word ones exist for a double space.
    """
    document = json.loads(ALIAS_FILE.read_text(encoding="utf-8"))
    triggers = document[COMMAND_NAME]
    assert triggers[0] == "!good bot"
    for trigger in triggers:
        assert trigger.startswith("!")
        assert trigger[1:].replace(" ", "").replace("_", "").isalpha()


def test_help_files_it_under_its_own_heading() -> None:
    assert any(COMMAND_NAME in names for _, names in GROUPS)


async def test_through_the_dispatcher_it_is_a_command_with_a_cooldown(
    config: Config, directory: GroupDirectory, store: Store, transport: FakeTransport
) -> None:
    """Served like any other command: recorded, timed, and rate-limited."""
    registry = CommandRegistry()
    register_good_bot_command(registry, aliases=ALIASES, decorate=cooldown(10, "wait {seconds}"))
    dispatcher = Dispatcher(
        config=config,
        directory=directory,
        holder=RegistryHolder(lambda: registry),
        store=store,
        transport=transport,
        clock=lambda: NOW,
    )

    first = await dispatcher.handle(envelope(text="!good bot"))
    second = await dispatcher.handle(envelope(text="!good bot"))

    assert first is not None
    assert (first.command, first.outcome) == (COMMAND_NAME, "ok")
    assert first.send_ms >= 0
    assert second is not None
    assert second.outcome == "refused_cooldown"
    assert len(transport.reactions) == 1
    assert transport.texts[0].startswith("wait ")