"""
Massimport av spillere (`POST /orgs/{id}/players/bulk`, se FEATURE_
BACKLOG.md "Massimport av spillere til organisasjon/turnering"). Samme
dedup-mønster som registration.py sin selvregistrering (ADR-017
Beslutning B), utvidet til alle PlayerCreate-felt.

`match_player_id`/`duplicate_action` (2026-08-18) -- ekte produksjonsbug:
rader uten e-post har ingen matchingsnøkkel, så reimport av samme CSV
dublerte dem i stedet for å oppdatere. Frontend oppdager nå slike mulige
duplikater selv (navnetreff, ingen e-post) og spør organisator eksplisitt
-- svaret sendes hit som disse to feltene per rad.
"""

import app.db as app_db
from app.routers.players import PlayerBulkRow, PlayerCreate, create_players_bulk

from tests.conftest import create_org, create_player


def _row(**kwargs) -> PlayerBulkRow:
    match_player_id = kwargs.pop("match_player_id", None)
    duplicate_action = kwargs.pop("duplicate_action", None)
    return PlayerBulkRow(
        data=PlayerCreate(**kwargs), match_player_id=match_player_id, duplicate_action=duplicate_action
    )


async def test_bulk_creates_new_players_without_email(pool):
    org_id = await create_org()
    rows = [
        _row(display_name="Ny Spiller A"),
        _row(display_name="Ny Spiller B", handicap_index=12.5),
    ]
    results = await create_players_bulk(rows, organization_id=org_id)
    assert len(results) == 2
    assert all(r.status == "created" for r in results)
    assert {r.player.display_name for r in results} == {"Ny Spiller A", "Ny Spiller B"}


async def test_bulk_matches_existing_player_by_email_and_fills_only_empty_fields(pool):
    org_id = await create_org()
    existing_id = await create_player(org_id, display_name="Eksisterende Spiller")
    # Sett e-post + ett annet felt på forhånd -- importen skal IKKE
    # overskrive country (allerede satt), kun matche på e-posten.
    async with app_db.org_connection(org_id) as conn:
        await conn.execute(
            "UPDATE player SET email = 'match@example.com', country = 'Norge' WHERE id = $1",
            existing_id,
        )

    rows = [
        _row(
            display_name="Annet Navn Fra CSV",  # skal IKKE overskrive display_name
            email="match@example.com",
            country="Sverige",  # skal IKKE overskrive et allerede satt felt
            club="Ny Klubb",  # skal FYLLES INN (var tomt før)
            handicap_index=8.0,  # skal FYLLES INN (var tomt før)
        ),
    ]
    results = await create_players_bulk(rows, organization_id=org_id)
    assert len(results) == 1
    assert results[0].status == "updated"
    p = results[0].player
    assert p.id == existing_id
    assert p.display_name == "Eksisterende Spiller"  # uendret
    assert p.country == "Norge"  # uendret (var allerede satt)
    assert p.club == "Ny Klubb"  # fylt inn (var tomt)
    assert p.handicap_index == 8.0  # fylt inn (var tomt)


async def test_bulk_without_email_never_matches_existing_and_always_creates(pool):
    """Uendret standardoppførsel når INGEN duplikat-varsel er besvart
    (match_player_id ikke satt) -- ren e-postløs rad oppretter fortsatt
    alltid en ny rad, akkurat som før denne funksjonen fikk
    duplikat-håndtering."""
    org_id = await create_org()
    await create_player(org_id, display_name="Har Ikke E-post")

    rows = [_row(display_name="Har Ikke E-post")]
    results = await create_players_bulk(rows, organization_id=org_id)
    assert results[0].status == "created"

    async with app_db.org_connection(org_id) as conn:
        count = await conn.fetchval(
            "SELECT count(*) FROM player WHERE display_name = 'Har Ikke E-post'"
        )
    assert count == 2  # den opprinnelige + den nye, ingen falsk dedup uten e-post


async def test_bulk_paid_flag_never_overwritten_on_existing_match(pool):
    org_id = await create_org()
    existing_id = await create_player(org_id, display_name="Betalt Spiller")
    async with app_db.org_connection(org_id) as conn:
        await conn.execute(
            "UPDATE player SET email = 'paid@example.com', paid = true WHERE id = $1", existing_id
        )

    rows = [_row(display_name="X", email="paid@example.com", paid=False)]
    results = await create_players_bulk(rows, organization_id=org_id)
    assert results[0].player.paid is True  # uendret, COALESCE mot ikke-nullbar kolonne er en no-op


async def test_bulk_is_transactional_across_rows(pool):
    """Selve listen kjøres i org_connection sin egen transaksjon -- ingen
    partial-suksess-forventning her, men bekreft at flere rader i samme
    kall faktisk lander i samme, konsistente organisasjon."""
    org_id = await create_org()
    rows = [_row(display_name=f"Spiller {i}") for i in range(5)]
    results = await create_players_bulk(rows, organization_id=org_id)
    assert len(results) == 5
    assert len({r.player.id for r in results}) == 5


async def test_bulk_duplicate_merge_fills_only_empty_fields_like_email_match(pool):
    """Organisator svarte "Slå sammen" på et duplikat-varsel -- COALESCE-
    oppførsel, identisk til e-post-matchingen, men rettet mot en
    eksplisitt oppgitt match_player_id i stedet."""
    org_id = await create_org()
    existing_id = await create_player(org_id, display_name="Anders Sperre")
    async with app_db.org_connection(org_id) as conn:
        await conn.execute("UPDATE player SET club = 'Gamle Klubb' WHERE id = $1", existing_id)

    rows = [
        _row(
            display_name="Anders Sperre",
            club="Ny Klubb",  # skal IKKE overskrive (allerede satt)
            handicap_index=14.0,  # skal FYLLES INN (var tomt)
            match_player_id=existing_id,
            duplicate_action="merge",
        )
    ]
    results = await create_players_bulk(rows, organization_id=org_id)
    assert results[0].status == "updated"
    assert results[0].player.id == existing_id
    assert results[0].player.club == "Gamle Klubb"  # uendret
    assert results[0].player.handicap_index == 14.0  # fylt inn

    async with app_db.org_connection(org_id) as conn:
        count = await conn.fetchval("SELECT count(*) FROM player WHERE display_name = 'Anders Sperre'")
    assert count == 1  # ingen ny duplikat opprettet


async def test_bulk_duplicate_overwrite_replaces_already_set_fields(pool):
    """Organisator svarte "Overskriv" -- eneste sti i endepunktet som
    erstatter et allerede satt felt, og kun for akkurat denne raden."""
    org_id = await create_org()
    existing_id = await create_player(org_id, display_name="Anders Sperre")
    async with app_db.org_connection(org_id) as conn:
        await conn.execute("UPDATE player SET club = 'Gamle Klubb' WHERE id = $1", existing_id)

    rows = [
        _row(
            display_name="Anders Sperre",
            club="Ny Klubb",
            match_player_id=existing_id,
            duplicate_action="overwrite",
        )
    ]
    results = await create_players_bulk(rows, organization_id=org_id)
    assert results[0].status == "overwritten"
    assert results[0].player.id == existing_id
    assert results[0].player.club == "Ny Klubb"  # overskrevet, ikke bevart


async def test_bulk_duplicate_create_new_still_creates_a_second_row(pool):
    """Organisator svarte "Importer som ny" (bevisst duplikat) --
    match_player_id kan følge med, men skal IGNORERES når
    duplicate_action er create_new."""
    org_id = await create_org()
    existing_id = await create_player(org_id, display_name="Anders Sperre")

    rows = [
        _row(
            display_name="Anders Sperre",
            match_player_id=existing_id,
            duplicate_action="create_new",
        )
    ]
    results = await create_players_bulk(rows, organization_id=org_id)
    assert results[0].status == "created"
    assert results[0].player.id != existing_id

    async with app_db.org_connection(org_id) as conn:
        count = await conn.fetchval("SELECT count(*) FROM player WHERE display_name = 'Anders Sperre'")
    assert count == 2