"""
Order of Merit (ADR-043) -- Steg 0/1/2-tester (ADR-074/075). Kaller de
faktiske router-funksjonene direkte (samme mønster som
test_tournament_hole_stats.py/test_hole_history.py).
"""

import pytest
from fastapi import HTTPException

from app.auth import CurrentUser
from app.routers.individual_tournaments import (
    HoleUpdate as TournamentHoleUpdate,
    update_hole as tournament_update_hole,
)
from app.routers.order_of_merit import (
    OrderOfMeritCreate,
    OrderOfMeritLinkCreate,
    OrderOfMeritTeamCreate,
    OrderOfMeritTeamMemberCreate,
    OrderOfMeritUpdate,
    add_order_of_merit_team_member,
    create_order_of_merit,
    create_order_of_merit_team,
    delete_order_of_merit_team,
    get_public_order_of_merit,
    link_tournament_to_order_of_merit,
    list_order_of_merit_teams,
    order_of_merit_leaderboard,
    remove_order_of_merit_team_member,
    update_order_of_merit,
)

from tests.conftest import (
    add_membership,
    create_org,
    create_org_hole,
    create_course,
    create_player,
    create_tee,
    create_tournament,
    create_tournament_participant,
    create_tournament_round,
    create_tournament_round_participant,
    create_user,
    new_id,
)

import app.db as app_db


async def _score_all_holes(tournament_id, round_id, rp_id, org_id, user_id, score):
    user = CurrentUser(user_id=user_id)
    for n in range(1, 19):
        await tournament_update_hole(
            tournament_id, round_id, rp_id, n,
            TournamentHoleUpdate(gross_strokes=score, expected_version=None),
            organization_id=org_id, user=user,
        )


async def _setup_eclectic_tournament(org_id, user_id, method="eclectic_stableford"):
    tournament_id = await create_tournament(org_id, name="Eclectic OOM-turnering")
    course_id = await create_course(org_id, name="OOM Links")
    for n in range(1, 19):
        await create_org_hole(org_id, course_id, hole_number=n, par=4, stroke_index=n)
    tee_id = await create_tee(org_id, course_id)
    async with app_db.org_connection(org_id) as conn:
        await conn.execute(
            "UPDATE tournament SET format_type = 'individual', scoring_method = $2 WHERE id = $1",
            tournament_id, method,
        )
    player_id = await create_player(org_id, user_id=user_id, display_name="OOM Spiller")
    tp_id = await create_tournament_participant(org_id, tournament_id, player_id)

    round1_id = await create_tournament_round(org_id, tournament_id, course_id, sequence=1)
    round2_id = await create_tournament_round(org_id, tournament_id, course_id, sequence=2)
    rp1_id = await create_tournament_round_participant(org_id, round1_id, tp_id, tee_id, course_handicap=0)
    rp2_id = await create_tournament_round_participant(org_id, round2_id, tp_id, tee_id, course_handicap=0)

    # Runde 1: par (4) på alle 18 hull -> 2 poeng/hull = 36 Stableford-poeng.
    await _score_all_holes(tournament_id, round1_id, rp1_id, org_id, user_id, score=4)
    # Runde 2: bogey (5) på alle 18 hull -> 1 poeng/hull = 18 Stableford-poeng.
    await _score_all_holes(tournament_id, round2_id, rp2_id, org_id, user_id, score=5)
    # Rå SUM over begge runder = 36 + 18 = 54. Eclectic (beste PER HULL,
    # runde 1 vinner hver gang) = 18 hull * 2 poeng = 36 -- tydelig
    # forskjellig fra rå-summen, beviser at riktig tall faktisk brukes.
    return tournament_id, player_id


async def test_oom_stableford_uses_eclectic_total_not_raw_sum(pool):
    """ADR-074: en lenket eclectic_stableford-turnering skal bidra med
    entry.eclectic_total (36), IKKE rå stableford_total på tvers av
    begge runder (54)."""
    org_id = await create_org()
    owner_id = await create_user()
    await add_membership(org_id, owner_id, role="owner")
    tournament_id, player_id = await _setup_eclectic_tournament(org_id, owner_id)

    oom = await create_order_of_merit(
        OrderOfMeritCreate(name="Sesong-OOM", kind="player", result_type="stableford", aggregation_mode="sum"),
        organization_id=org_id,
    )
    await link_tournament_to_order_of_merit(
        oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_id), organization_id=org_id
    )

    leaderboard = await order_of_merit_leaderboard(oom.id, organization_id=org_id)
    assert len(leaderboard) == 1
    assert leaderboard[0].value == 36.0
    assert leaderboard[0].value != 54.0


# ---------------------------------------------------------------------------
# Steg 1 (ADR-074): lag-OOM CRUD + leaderboard.
# ---------------------------------------------------------------------------

async def _setup_stroke_gross_tournament(org_id, name, participants: list[tuple[str, int]]):
    """participants: liste av (player_id, gross-score-per-hull) -- ETT
    18-hulls slagspill-runde, samme score på alle 18 hull for enkelhets
    skyld."""
    tournament_id = await create_tournament(org_id, name=name)
    course_id = await create_course(org_id, name=f"{name} bane")
    for n in range(1, 19):
        await create_org_hole(org_id, course_id, hole_number=n, par=4, stroke_index=n)
    tee_id = await create_tee(org_id, course_id)
    async with app_db.org_connection(org_id) as conn:
        await conn.execute(
            "UPDATE tournament SET format_type = 'individual', scoring_method = 'stroke_gross' WHERE id = $1",
            tournament_id,
        )
    round_id = await create_tournament_round(org_id, tournament_id, course_id)
    for player_id, score in participants:
        tp_id = await create_tournament_participant(org_id, tournament_id, player_id)
        rp_id = await create_tournament_round_participant(org_id, round_id, tp_id, tee_id, course_handicap=0)
        user_id = None
        async with app_db.org_connection(org_id) as conn:
            user_id = await conn.fetchval("SELECT user_id::text FROM player WHERE id = $1", player_id)
        await _score_all_holes(tournament_id, round_id, rp_id, org_id, user_id, score=score)
    return tournament_id


async def test_team_leaderboard_sums_member_individual_totals(pool):
    """To turneringer lenket til en gross/sum lag-OOM. Spiller 1: 72+90=162.
    Spiller 2: 90+108=198. Ett lag med begge -> forventet lagsum 360."""
    org_id = await create_org()
    owner_id = await create_user()
    await add_membership(org_id, owner_id, role="owner")
    user1_id = await create_user(display_name="Spiller Én")
    user2_id = await create_user(display_name="Spiller To")
    player1_id = await create_player(org_id, user_id=user1_id, display_name="Spiller Én")
    player2_id = await create_player(org_id, user_id=user2_id, display_name="Spiller To")

    tournament_a = await _setup_stroke_gross_tournament(
        org_id, "Turnering A", [(player1_id, 4), (player2_id, 5)]
    )
    tournament_b = await _setup_stroke_gross_tournament(
        org_id, "Turnering B", [(player1_id, 5), (player2_id, 6)]
    )

    oom = await create_order_of_merit(
        OrderOfMeritCreate(name="Lag-OOM", kind="team", result_type="gross", aggregation_mode="sum"),
        organization_id=org_id,
    )
    await link_tournament_to_order_of_merit(
        oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_a), organization_id=org_id
    )
    await link_tournament_to_order_of_merit(
        oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_b), organization_id=org_id
    )

    team = await create_order_of_merit_team(
        oom.id, OrderOfMeritTeamCreate(name="Laget"), organization_id=org_id
    )
    await add_order_of_merit_team_member(
        oom.id, team.id, OrderOfMeritTeamMemberCreate(player_id=player1_id), organization_id=org_id
    )
    await add_order_of_merit_team_member(
        oom.id, team.id, OrderOfMeritTeamMemberCreate(player_id=player2_id), organization_id=org_id
    )

    leaderboard = await order_of_merit_leaderboard(oom.id, organization_id=org_id)
    assert len(leaderboard) == 1
    assert leaderboard[0].player_id == team.id
    assert leaderboard[0].player_name == "Laget"
    assert leaderboard[0].value == 360.0
    assert leaderboard[0].results_available == 2
    assert leaderboard[0].results_counted == 2
    assert leaderboard[0].eligible is True


async def test_team_leaderboard_best_n_applies_at_both_levels(pool):
    """Samme oppsett som over, men count_best_n=1. ADR-074: ETT lagret
    aggregeringsvalg styrer BEGGE nivåer -- count_best_n=1 betyr derfor
    "hver spillers beste 1 av 2 turneringer" OG "lagets beste 1 av 2
    medlemmer", ikke bare det ene. Spiller 1 sin beste (laveste) turnering
    er 72, spiller 2 sin er 90 -- laget teller da KUN 72 (sitt beste
    medlem, som allerede er redusert til sitt eget beste resultat)."""
    org_id = await create_org()
    owner_id = await create_user()
    await add_membership(org_id, owner_id, role="owner")
    user1_id = await create_user()
    user2_id = await create_user()
    player1_id = await create_player(org_id, user_id=user1_id)
    player2_id = await create_player(org_id, user_id=user2_id)

    tournament_a = await _setup_stroke_gross_tournament(org_id, "A", [(player1_id, 4), (player2_id, 5)])
    tournament_b = await _setup_stroke_gross_tournament(org_id, "B", [(player1_id, 5), (player2_id, 6)])

    oom = await create_order_of_merit(
        OrderOfMeritCreate(
            name="Lag-OOM beste-1", kind="team", result_type="gross", aggregation_mode="sum", count_best_n=1
        ),
        organization_id=org_id,
    )
    await link_tournament_to_order_of_merit(oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_a), organization_id=org_id)
    await link_tournament_to_order_of_merit(oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_b), organization_id=org_id)

    team = await create_order_of_merit_team(oom.id, OrderOfMeritTeamCreate(name="Laget"), organization_id=org_id)
    await add_order_of_merit_team_member(oom.id, team.id, OrderOfMeritTeamMemberCreate(player_id=player1_id), organization_id=org_id)
    await add_order_of_merit_team_member(oom.id, team.id, OrderOfMeritTeamMemberCreate(player_id=player2_id), organization_id=org_id)

    leaderboard = await order_of_merit_leaderboard(oom.id, organization_id=org_id)
    assert leaderboard[0].value == 72.0
    assert leaderboard[0].results_counted == 1


async def test_team_crud_and_kind_guard(pool):
    org_id = await create_org()
    owner_id = await create_user()
    await add_membership(org_id, owner_id, role="owner")
    player_id = await create_player(org_id)

    player_oom = await create_order_of_merit(
        OrderOfMeritCreate(name="Spiller-OOM", kind="player", result_type="gross"), organization_id=org_id
    )
    with pytest.raises(HTTPException) as exc_info:
        await create_order_of_merit_team(
            player_oom.id, OrderOfMeritTeamCreate(name="Skal feile"), organization_id=org_id
        )
    assert exc_info.value.status_code == 400

    team_oom = await create_order_of_merit(
        OrderOfMeritCreate(name="Lag-OOM", kind="team", result_type="gross"), organization_id=org_id
    )
    team = await create_order_of_merit_team(team_oom.id, OrderOfMeritTeamCreate(name="Laget"), organization_id=org_id)
    member = await add_order_of_merit_team_member(
        team_oom.id, team.id, OrderOfMeritTeamMemberCreate(player_id=player_id), organization_id=org_id
    )

    teams = await list_order_of_merit_teams(team_oom.id, organization_id=org_id)
    assert len(teams) == 1
    assert len(teams[0].members) == 1
    assert teams[0].members[0].player_id == player_id

    await remove_order_of_merit_team_member(team_oom.id, team.id, member.id, organization_id=org_id)
    teams = await list_order_of_merit_teams(team_oom.id, organization_id=org_id)
    assert len(teams[0].members) == 0

    await delete_order_of_merit_team(team_oom.id, team.id, organization_id=org_id)
    teams = await list_order_of_merit_teams(team_oom.id, organization_id=org_id)
    assert len(teams) == 0


# ---------------------------------------------------------------------------
# Steg 2 (ADR-075): eclectic-aggregering på tvers av lenkede turneringer.
# ---------------------------------------------------------------------------

async def _setup_tournament_on_course(org_id, name, course_id, tee_id, participants: list[tuple[str, str, list[int]]]):
    """participants: liste av (player_id, user_id, [score per hull 1..18])
    -- DELER en allerede opprettet bane med kalleren (kreves for eclectic-
    testene, der to turneringer må ha SAMME course_id)."""
    tournament_id = await create_tournament(org_id, name=name)
    async with app_db.org_connection(org_id) as conn:
        await conn.execute(
            "UPDATE tournament SET format_type = 'individual', scoring_method = 'stroke_gross' WHERE id = $1",
            tournament_id,
        )
    round_id = await create_tournament_round(org_id, tournament_id, course_id)
    for player_id, user_id, scores in participants:
        tp_id = await create_tournament_participant(org_id, tournament_id, player_id)
        rp_id = await create_tournament_round_participant(org_id, round_id, tp_id, tee_id, course_handicap=0)
        user = CurrentUser(user_id=user_id)
        for n, score in enumerate(scores, start=1):
            await tournament_update_hole(
                tournament_id, round_id, rp_id, n,
                TournamentHoleUpdate(gross_strokes=score, expected_version=None),
                organization_id=org_id, user=user,
            )
    return tournament_id


async def test_eclectic_oom_picks_best_hole_across_tournaments(pool):
    """To turneringer, SAMME bane. Spiller: par (4) på hull 1-9 i A, bogey
    (5) på hull 10-18 i A -- omvendt i B. Eclectic gross skal plukke par
    (4) på ALLE 18 hull (9 fra A, 9 fra B) = 72, IKKE 81 (snitt) eller noe
    annet -- beviser faktisk kryss-turnering-utvelgelse, samme bevis-
    mønster som ADR-068 sin egen innad-i-turnering-test."""
    org_id = await create_org()
    owner_id = await create_user()
    await add_membership(org_id, owner_id, role="owner")
    user_id = await create_user()
    player_id = await create_player(org_id, user_id=user_id)

    course_id = await create_course(org_id, name="Delt bane")
    for n in range(1, 19):
        await create_org_hole(org_id, course_id, hole_number=n, par=4, stroke_index=n)
    tee_id = await create_tee(org_id, course_id)

    scores_a = [4] * 9 + [5] * 9  # par hull 1-9, bogey hull 10-18
    scores_b = [5] * 9 + [4] * 9  # bogey hull 1-9, par hull 10-18
    tournament_a = await _setup_tournament_on_course(org_id, "A", course_id, tee_id, [(player_id, user_id, scores_a)])
    tournament_b = await _setup_tournament_on_course(org_id, "B", course_id, tee_id, [(player_id, user_id, scores_b)])

    oom = await create_order_of_merit(
        OrderOfMeritCreate(name="Eclectic-OOM", kind="player", result_type="gross", aggregation_mode="eclectic"),
        organization_id=org_id,
    )
    await link_tournament_to_order_of_merit(oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_a), organization_id=org_id)
    await link_tournament_to_order_of_merit(oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_b), organization_id=org_id)

    leaderboard = await order_of_merit_leaderboard(oom.id, organization_id=org_id)
    assert len(leaderboard) == 1
    assert leaderboard[0].value == 72.0
    assert leaderboard[0].results_available == 2  # begge turneringene bidro minst ett hull


async def test_eclectic_oom_rejects_linking_tournament_on_different_course(pool):
    org_id = await create_org()
    owner_id = await create_user()
    await add_membership(org_id, owner_id, role="owner")
    user_id = await create_user()
    player_id = await create_player(org_id, user_id=user_id)

    course_a = await create_course(org_id, name="Bane A")
    for n in range(1, 19):
        await create_org_hole(org_id, course_a, hole_number=n, par=4, stroke_index=n)
    tee_a = await create_tee(org_id, course_a)
    tournament_a = await _setup_tournament_on_course(org_id, "A", course_a, tee_a, [(player_id, user_id, [4] * 18)])

    course_b = await create_course(org_id, name="Bane B")
    for n in range(1, 19):
        await create_org_hole(org_id, course_b, hole_number=n, par=4, stroke_index=n)
    tee_b = await create_tee(org_id, course_b)
    tournament_b = await _setup_tournament_on_course(org_id, "B", course_b, tee_b, [(player_id, user_id, [5] * 18)])

    oom = await create_order_of_merit(
        OrderOfMeritCreate(name="Eclectic-OOM", kind="player", result_type="gross", aggregation_mode="eclectic"),
        organization_id=org_id,
    )
    await link_tournament_to_order_of_merit(oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_a), organization_id=org_id)

    with pytest.raises(HTTPException) as exc_info:
        await link_tournament_to_order_of_merit(
            oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_b), organization_id=org_id
        )
    assert exc_info.value.status_code == 400


async def test_eclectic_oom_rejects_mode_switch_with_existing_different_course_links(pool):
    org_id = await create_org()
    owner_id = await create_user()
    await add_membership(org_id, owner_id, role="owner")
    user_id = await create_user()
    player_id = await create_player(org_id, user_id=user_id)

    course_a = await create_course(org_id, name="Bane A")
    for n in range(1, 19):
        await create_org_hole(org_id, course_a, hole_number=n, par=4, stroke_index=n)
    tee_a = await create_tee(org_id, course_a)
    tournament_a = await _setup_tournament_on_course(org_id, "A", course_a, tee_a, [(player_id, user_id, [4] * 18)])

    course_b = await create_course(org_id, name="Bane B")
    for n in range(1, 19):
        await create_org_hole(org_id, course_b, hole_number=n, par=4, stroke_index=n)
    tee_b = await create_tee(org_id, course_b)
    tournament_b = await _setup_tournament_on_course(org_id, "B", course_b, tee_b, [(player_id, user_id, [5] * 18)])

    # Opprettes med sum (ikke eclectic), slik at begge ulikbane-turneringene
    # kan lenkes uten å treffe lenke-tidspunktets sjekk -- selve bug-en som
    # skal testes er modus-BYTTET etterpå.
    oom = await create_order_of_merit(
        OrderOfMeritCreate(name="Sum-OOM", kind="player", result_type="gross", aggregation_mode="sum"),
        organization_id=org_id,
    )
    await link_tournament_to_order_of_merit(oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_a), organization_id=org_id)
    await link_tournament_to_order_of_merit(oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_b), organization_id=org_id)

    with pytest.raises(HTTPException) as exc_info:
        await update_order_of_merit(
            oom.id, OrderOfMeritUpdate(aggregation_mode="eclectic"), organization_id=org_id
        )
    assert exc_info.value.status_code == 400


# ---------------------------------------------------------------------------
# Steg 3 (ADR-076): offentlig/delt visning -- migrasjon 076
# (public_order_of_merit_by_id) + /public/order-of-merits/{id}.
# ---------------------------------------------------------------------------

async def test_public_order_of_merit_returns_404_for_nonexistent_id(pool):
    with pytest.raises(HTTPException) as exc_info:
        await get_public_order_of_merit(new_id())
    assert exc_info.value.status_code == 404


async def test_public_order_of_merit_returns_404_for_private_oom(pool):
    """public_visible=false (default) -- samme anti-enumerering som
    public_org_by_slug/public_tournament_by_code: en privat OOM skal gi
    NØYAKTIG samme 404 som en ikke-eksisterende id, ikke en 403 som ville
    røpet at id-en faktisk finnes."""
    org_id = await create_org()
    owner_id = await create_user()
    await add_membership(org_id, owner_id, role="owner")
    oom = await create_order_of_merit(
        OrderOfMeritCreate(name="Privat OOM", kind="player", result_type="gross", public_visible=False),
        organization_id=org_id,
    )
    with pytest.raises(HTTPException) as exc_info:
        await get_public_order_of_merit(oom.id)
    assert exc_info.value.status_code == 404


async def test_public_order_of_merit_returns_leaderboard_when_visible(pool):
    org_id = await create_org()
    owner_id = await create_user()
    await add_membership(org_id, owner_id, role="owner")
    user_id = await create_user()
    player_id = await create_player(org_id, user_id=user_id, display_name="Offentlig Spiller")

    tournament_id = await _setup_stroke_gross_tournament(org_id, "Offentlig turnering", [(player_id, 4)])

    oom = await create_order_of_merit(
        OrderOfMeritCreate(name="Offentlig OOM", kind="player", result_type="gross", public_visible=True),
        organization_id=org_id,
    )
    await link_tournament_to_order_of_merit(
        oom.id, OrderOfMeritLinkCreate(tournament_id=tournament_id), organization_id=org_id
    )

    result = await get_public_order_of_merit(oom.id)
    assert result.name == "Offentlig OOM"
    assert result.kind == "player"
    assert result.result_type == "gross"
    assert len(result.entries) == 1
    assert result.entries[0].player_name == "Offentlig Spiller"
    assert result.entries[0].value == 72.0