"""Integration tests for GET /api/v1/people (browse/discover, section 17 --
additive beyond the spec's minimum endpoint list): sorting, filtering, and
pagination against real PostgreSQL, exercised through
person_service.list_people directly rather than over HTTP. Mirrors
test_movie_browse.py; people have no genre/year/status equivalent, just
known_for_department, so there's no invalid-filter case to test here (no
parsing/enum lookup happens, unlike movies/series filters)."""

from __future__ import annotations

import pytest
from sqlalchemy.ext.asyncio import AsyncSession

from app.repositories.provider_repository import get_or_create_provider
from app.repositories.reference_repository import get_or_create_person
from app.services import person_service


async def _seed_people(db_session: AsyncSession) -> None:
    provider = await get_or_create_provider(db_session, "tmdb", "TMDB")
    people = [
        ("1001", "Alice Actor", 10.0, "Acting"),
        ("1002", "Bob Actor", 90.0, "Acting"),
        ("1003", "Cara Director", 50.0, "Directing"),
        ("1004", "Dana Writer", 20.0, "Writing"),
    ]
    for external_id, name, popularity, department in people:
        await get_or_create_person(
            db_session,
            provider_id=provider.id,
            external_id=external_id,
            name=name,
            popularity=popularity,
            known_for_department=department,
        )
    await db_session.commit()


@pytest.mark.asyncio
async def test_list_people_defaults_to_popularity_descending(db_session: AsyncSession):
    await _seed_people(db_session)

    out = await person_service.list_people(
        db_session,
        known_for_department=None,
        sort_by="popularity",
        sort_dir="desc",
        page=1,
        page_size=20,
    )

    assert out.total_results == 4
    assert out.total_pages == 1
    assert [p.name for p in out.results] == [
        "Bob Actor",
        "Cara Director",
        "Dana Writer",
        "Alice Actor",
    ]


@pytest.mark.asyncio
async def test_list_people_filters_by_known_for_department(db_session: AsyncSession):
    await _seed_people(db_session)

    out = await person_service.list_people(
        db_session,
        known_for_department="Acting",
        sort_by="popularity",
        sort_dir="desc",
        page=1,
        page_size=20,
    )

    assert out.total_results == 2
    assert [p.name for p in out.results] == ["Bob Actor", "Alice Actor"]


@pytest.mark.asyncio
async def test_list_people_sorts_by_name_ascending(db_session: AsyncSession):
    await _seed_people(db_session)

    out = await person_service.list_people(
        db_session,
        known_for_department=None,
        sort_by="name",
        sort_dir="asc",
        page=1,
        page_size=20,
    )

    assert [p.name for p in out.results] == [
        "Alice Actor",
        "Bob Actor",
        "Cara Director",
        "Dana Writer",
    ]


@pytest.mark.asyncio
async def test_list_people_paginates(db_session: AsyncSession):
    await _seed_people(db_session)

    page1 = await person_service.list_people(
        db_session,
        known_for_department=None,
        sort_by="popularity",
        sort_dir="desc",
        page=1,
        page_size=2,
    )
    page2 = await person_service.list_people(
        db_session,
        known_for_department=None,
        sort_by="popularity",
        sort_dir="desc",
        page=2,
        page_size=2,
    )

    assert page1.total_results == 4
    assert page1.total_pages == 2
    assert [p.name for p in page1.results] == ["Bob Actor", "Cara Director"]
    assert [p.name for p in page2.results] == ["Dana Writer", "Alice Actor"]


@pytest.mark.asyncio
async def test_list_people_returns_empty_page_when_nothing_matches(db_session: AsyncSession):
    await _seed_people(db_session)

    out = await person_service.list_people(
        db_session,
        known_for_department="Editing",
        sort_by="popularity",
        sort_dir="desc",
        page=1,
        page_size=20,
    )

    assert out.results == []
    assert out.total_results == 0
    assert out.total_pages == 0