# Copyright (c) 2026 Krzysztof Rudnicki. MIT licence.
"""The !papież command: a random pope, captioned and linked."""

from __future__ import annotations

import base64
from pathlib import Path
from typing import TYPE_CHECKING

import httpx
import pytest

from signal_bot.decorators import DISPLAY_MARGIN_SECONDS, cooldown
from signal_bot.http_client import ImageFetcher
from signal_bot.models import parse_envelope
from signal_bot.popes_command import (
    COMMAND_NAME,
    article_url,
    caption_for,
    random_pope,
    register_pope_command,
)
from signal_bot.portraits import PortraitCache
from signal_bot.registry import CommandContext, CommandRefusedError, CommandRegistry
from signal_bot.versioning import POPES
from tests.conftest import WATCHED_GROUP, envelope

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

IMAGE = b"portrait-bytes"
ALIASES = {COMMAND_NAME: ["!papież", "!papiez", "!pope"]}


def _cache(tmp_path: Path) -> PortraitCache:
    def handler(request: httpx.Request) -> httpx.Response:
        if "commons" in str(request.url):
            page = {"imageinfo": [{"thumburl": "https://cdn/portrait.jpg"}]}
            return httpx.Response(200, json={"query": {"pages": [page]}})
        return httpx.Response(200, content=IMAGE)

    fetcher = ImageFetcher(httpx.AsyncClient(transport=httpx.MockTransport(handler)))
    return PortraitCache(fetcher, "https://commons.example/w/api.php", tmp_path)


def _ctx(transport: FakeTransport, store: Store, config: Config, text: str) -> CommandContext:
    message = parse_envelope(envelope(text=text))
    assert message is not None
    return CommandContext(
        message=message,
        group_id=WATCHED_GROUP,
        transport=transport,
        store=store,
        config=config,
        command_name=COMMAND_NAME,
        now=100.0,
        day="2026-08-30",
    )


@pytest.mark.parametrize("trigger", ["!papież", "!papiez", "!pope"])
def test_every_alias_resolves(trigger: str) -> None:
    registry = CommandRegistry()
    register_pope_command(registry, _cache(Path("/nonexistent")), aliases=ALIASES)

    command = registry.resolve(trigger)
    assert command is not None
    assert command.name == COMMAND_NAME


def test_the_real_alias_file_carries_the_command() -> None:
    registry = CommandRegistry()
    register_pope_command(registry, _cache(Path("/nonexistent")))
    # The Polish spelling is the one kuhy asked for; folding makes the rest
    # of the keyboard layouts work, but this one must be listed outright.
    assert registry.resolve("!papież") is not None


async def test_it_posts_a_portrait_with_the_caption_attached(
    tmp_path: Path, transport: FakeTransport, store: Store, config: Config
) -> None:
    registry = CommandRegistry()
    register_pope_command(registry, _cache(tmp_path), aliases=ALIASES)
    command = registry.resolve("!papież")
    assert command is not None

    await command.handler(_ctx(transport, store, config, "!papież"))

    sent = transport.sent[0]
    assert sent.recipient == WATCHED_GROUP
    assert sent.image_base64 is not None
    assert base64.b64decode(sent.image_base64) == IMAGE
    # One message, not two: the caption rides in the same payload.
    assert len(transport.sent) == 1
    assert "papież nr " in sent.caption
    assert "https://pl.wikipedia.org/wiki/" in sent.caption


async def test_the_cooldown_decorator_applies(
    tmp_path: Path, transport: FakeTransport, store: Store, config: Config
) -> None:
    registry = CommandRegistry()
    register_pope_command(
        registry, _cache(tmp_path), decorate=cooldown(10, "WAIT {seconds}"), aliases=ALIASES
    )
    store.record_use(WATCHED_GROUP, "uuid-alice", COMMAND_NAME, 100.0, "2026-08-30")
    command = registry.resolve("!pope")
    assert command is not None

    with pytest.raises(CommandRefusedError):
        await command.handler(_ctx(transport, store, config, "!pope"))

    assert transport.texts == [f"WAIT {10 + DISPLAY_MARGIN_SECONDS}"]


def test_the_caption_names_the_pope_in_both_languages() -> None:
    pope = POPES[263]
    assert pope.name == "Jan Paweł II"
    assert caption_for(pope) == (
        "Jan Paweł II — Ioannes Paulus Secundus\n"
        "papież nr 264 z 267, pontyfikat 1978-2005\n"
        "https://pl.wikipedia.org/wiki/Jan_Pawe%C5%82_II"
    )


def test_the_latin_name_never_contradicts_the_polish_number() -> None:
    """Both names come from the same table row, so they cannot disagree.

    la.wikipedia titles #154 "Stephanus X" while every other source calls
    him the ninth, and "Stefan IX — Stephanus X" in one caption reads as a
    bug. The Latin column of Poczet papieży says "Stephanus Nonus".
    """
    assert POPES[153].name == "Stefan IX"
    assert POPES[153].latin == "Stephanus Nonus"
    assert POPES[266].latin == "Leo Decimus Quartus"


def test_the_url_uses_the_title_so_disambiguated_popes_still_resolve() -> None:
    telesfor = POPES[7]
    assert telesfor.name == "Telesfor"
    # Half the early popes live at "<name> (papież)"; name alone 404s.
    assert article_url(telesfor) == "https://pl.wikipedia.org/wiki/Telesfor_%28papie%C5%BC%29"


def test_the_draw_actually_varies() -> None:
    # 0.0.3 shipped a !gekon that posted one identical photo forever because
    # nobody drew twice. Twenty draws from 267 popes repeating is a 1-in-267^19
    # event; anything that pins the choice fails here immediately.
    drawn = {random_pope().ordinal for _ in range(20)}
    assert len(drawn) > 1