from __future__ import annotations

import pytest
from fastapi.testclient import TestClient

from chat.app import app


@pytest.fixture
def client(tmp_path, monkeypatch):
    cfg = tmp_path / "config.toml"
    cfg.write_text('featherless_api_key = "test"\n')
    monkeypatch.setenv("CHAT_CONFIG_PATH", str(cfg))
    db = tmp_path / "test.db"
    monkeypatch.setenv("CHAT_DB_PATH", str(db))
    with TestClient(app) as c:
        if hasattr(app.state, "background_worker"):
            app.state.background_worker.enabled = False
        yield c


def _setup_minimal_state(db_path):
    """Set up enough state so the first-run middleware doesn't redirect."""
    from chat.db.connection import open_db
    from chat.eventlog.log import append_event
    from chat.eventlog.projector import project

    with open_db(db_path) as conn:
        append_event(
            conn,
            kind="you_authored",
            payload={"name": "Me", "pronouns": "", "persona": ""},
        )
        append_event(
            conn,
            kind="bot_authored",
            payload={
                "id": "bot_a",
                "name": "BotA",
                "persona": "",
                "voice_samples": [],
                "traits": [],
                "backstory": "",
                "initial_relationship_to_you": "",
                "kickoff_prose": "",
            },
        )
        project(conn)


def test_404_renders_friendly_page_for_html(client, tmp_path):
    _setup_minimal_state(tmp_path / "test.db")
    response = client.get("/chats/no_such_chat")
    assert response.status_code == 404
    body = response.text
    assert "404" in body
    assert "back to" in body.lower()