"""Settings loading: CSV splitting, validation, derived properties."""

from __future__ import annotations

from pathlib import Path

import pytest
from pydantic import ValidationError

from sebrief.config import Settings


def make_settings(**overrides) -> Settings:
    return Settings(_env_file=None, **overrides)


def test_defaults():
    s = make_settings()
    assert s.minimax_model == "MiniMax-M3"
    assert s.minimax_fallback_models == ["MiniMax-M2.7", "MiniMax-M2.5"]
    assert s.run_weekday == 0
    assert s.run_time_kst == "07:00"
    assert s.catchup_window_hours == 72
    assert s.max_papers == 60
    assert s.backfill_days == 7
    assert s.verify_enabled is True
    assert s.paper_summary_enabled is True
    assert s.paper_summary_batch_size == 8
    assert s.rss_feeds == []
    assert s.db_path == Path("data") / "sebrief.sqlite3"


def test_csv_fields_split():
    s = make_settings(
        MINIMAX_FALLBACK_MODELS=" a , b ,",
        SEBRIEF_RSS_FEEDS="e-Informatica|https://example.org/rss, X|https://x.example/feed",
        SEBRIEF_EXTRA_BLACKLIST_ISSNS="1234-5678, 2345-6789",
    )
    assert s.minimax_fallback_models == ["a", "b"]
    assert s.rss_feeds == ["e-Informatica|https://example.org/rss", "X|https://x.example/feed"]
    assert s.extra_blacklist_issns == ["1234-5678", "2345-6789"]


def test_run_weekday_validated():
    with pytest.raises(ValidationError):
        make_settings(SEBRIEF_RUN_WEEKDAY="7")
    assert make_settings(SEBRIEF_RUN_WEEKDAY="6").run_weekday == 6


def test_env_aliases(tmp_path):
    s = make_settings(SEBRIEF_DATA_DIR=str(tmp_path / "d"), SEBRIEF_MAX_PAPERS="10")
    assert s.data_dir == tmp_path / "d"
    assert s.max_papers == 10
    assert s.db_path == tmp_path / "d" / "sebrief.sqlite3"