# Copyright (c) 2026 Krzysztof Rudnicki. MIT licence.
"""Shared fixtures and envelope builders."""

from __future__ import annotations

import datetime as dt
import json
from typing import Any

import httpx
import pytest

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
from signal_bot.trust import InviteTrust

# Canonical ``group.<base64>`` ids, the spelling /v1/groups reports and the
# only one /v2/send accepts. The *_INTERNAL forms are what an envelope
# carries: exactly what the canonical form decodes to.
WATCHED_GROUP = "group.ZDJGMFkyaGxaQzFuY205MWNDMXBaQzB6TWkxaWVYUmxjeUVoSVNFaElRPT0="
WATCHED_INTERNAL = "d2F0Y2hlZC1ncm91cC1pZC0zMi1ieXRlcyEhISEhIQ=="
SECOND_GROUP = "group.YzJWamIyNWtMV2R5YjNWd0xXbGtMVE15TFdKNWRHVnpJU0VoSVNFaA=="
SECOND_INTERNAL = "c2Vjb25kLWdyb3VwLWlkLTMyLWJ5dGVzISEhISEh"
OTHER_GROUP = "group.YjNSb1pYSXRaM0p2ZFhBdGFXUXRNekl0WW5sMFpYTWhJU0VoSVNFPQ=="

# The operator, and somebody who is not.
TRUSTED_NUMBER = "+48516501330"
STRANGER_NUMBER = "+15555550123"


@pytest.fixture
def config() -> Config:
    """The production shape: no allowlist, groups discovered from the account."""
    return Config(
        phone_number="+15550000000",
        api_base_url="http://localhost:9922",
        database_path=":memory:",
        cooldown_seconds=10,
    )


def group_entry(group_id: str, *, member: bool = True, name: str = "e2e") -> dict[str, Any]:
    """One /v1/groups row, in both spellings the real API uses."""
    return {"id": group_id, "internal_id": group_id, "name": name, "member": member}


def listing_client(entries: list[dict[str, Any]]) -> httpx.AsyncClient:
    """A client whose /v1/groups always answers with these rows."""
    return httpx.AsyncClient(
        transport=httpx.MockTransport(lambda request: httpx.Response(200, json=entries))
    )


@pytest.fixture
async def directory(config: Config, store: Store) -> GroupDirectory:
    """A directory that has already discovered both test groups."""
    client = listing_client([group_entry(WATCHED_GROUP), group_entry(SECOND_GROUP)])
    found = GroupDirectory(config, client, store, InviteTrust(()))
    await found.refresh()
    return found


@pytest.fixture
def store() -> Store:
    with Store(":memory:") as opened:
        yield opened


@pytest.fixture
def transport() -> FakeTransport:
    return FakeTransport()


@pytest.fixture
def clock() -> dt.datetime:
    return dt.datetime(2026, 8, 29, 12, 0, tzinfo=dt.UTC)


def envelope(
    *,
    text: str | None = "hello",
    group_id: str | None = WATCHED_GROUP,
    uuid: str = "uuid-alice",
    name: str = "Alice",
    sticker: bool = False,
    reaction: bool = False,
    sync: bool = False,
) -> str:
    """Build one raw websocket frame in either envelope shape."""
    payload: dict[str, Any] = {"timestamp": 1719177917717}
    if text is not None:
        payload["message"] = text
    if group_id is not None:
        payload["groupInfo"] = {"groupId": group_id, "type": "DELIVER"}
    if sticker:
        payload["sticker"] = {"packId": "abc", "stickerId": 6}
    if reaction:
        payload["reaction"] = {"emoji": "👍", "targetAuthor": "x"}

    body: dict[str, Any] = {
        "source": name,
        "sourceNumber": STRANGER_NUMBER,
        "sourceUuid": uuid,
        "sourceName": name,
        "sourceDevice": 69,
        "timestamp": 1719177917717,
    }
    if sync:
        body["syncMessage"] = {"sentMessage": payload}
    else:
        body["dataMessage"] = payload
    return json.dumps({"envelope": body, "account": "+15550000000"})


def update_envelope(
    *,
    group_id: str = WATCHED_GROUP,
    number: str = TRUSTED_NUMBER,
    uuid: str = "uuid-operator",
) -> str:
    """Build a group-membership-change frame: no text, groupInfo type UPDATE.

    This is the shape signal-cli emits when somebody adds the bot to a
    group, and the only frame that names who did it.
    """
    return json.dumps(
        {
            "envelope": {
                "source": number,
                "sourceNumber": number,
                "sourceUuid": uuid,
                "sourceName": "kuhy",
                "timestamp": 1719177917717,
                "dataMessage": {
                    "timestamp": 1719177917717,
                    "message": None,
                    "groupInfo": {"groupId": group_id, "type": "UPDATE"},
                },
            },
            "account": "+15550000000",
        }
    )