"""Ledger-gap operational check tests (REQ-055 / dcy-011 FR-5, issue #11).

PostgreSQL-gated (TREX_POSTGRESQL_TEST_DSN). dcy-020 (BAT-030): the detector
keys off slot_transition_log sell fills (the `closed` status no longer
exists). Inserts sold slots + outbox rows directly and asserts
find_ledger_gap_slots detects only the gaps.
"""
from __future__ import annotations

import uuid
from datetime import date, datetime, timezone

from trex_core.adapters.persistence.ops_checks import find_ledger_gap_slots

_DAY = date(2026, 6, 10)
_TS = datetime(2026, 6, 10, 6, 0, tzinfo=timezone.utc)


def _insert_slot(conn, *, status, portfolio_id, symbol="005930"):
    sid = str(uuid.uuid4())
    with conn.cursor() as cur:
        cur.execute(
            "INSERT INTO daily_slot (slot_id, status, symbol, portfolio_id) "
            "VALUES (%s, %s, %s, %s)",
            (sid, status, symbol, portfolio_id),
        )
    return sid


def _insert_sell_fill(conn, slot_id, *, reason="sell_filled", ts=_TS):
    with conn.cursor() as cur:
        cur.execute(
            "INSERT INTO slot_transition_log (slot_id, from_state, to_state, ts, reason, actor) "
            "VALUES (%s, 'pending_sell', 'inactive', %s, %s, 'execution_loop')",
            (slot_id, ts, reason),
        )


def _insert_outbox(conn, *, asset_id, order_id="O1", execution_id="E1"):
    with conn.cursor() as cur:
        cur.execute(
            "INSERT INTO ledger_outbox (correlation_id, asset_id, order_id, execution_id, "
            "side, qty, price) VALUES (%s, %s, %s, %s, 'sell', 1, 1000)",
            (f"{asset_id}:{order_id}:{execution_id}", asset_id, order_id, execution_id),
        )


def test_detects_only_gap_slots(pg_clean):
    import psycopg
    dsn = pg_clean
    with psycopg.connect(dsn, autocommit=True) as conn:
        gap_null = _insert_slot(conn, status="inactive", portfolio_id=None)  # gap (no pf)
        _insert_sell_fill(conn, gap_null)
        gap_no_outbox = _insert_slot(conn, status="inactive", portfolio_id="PF-GAP")
        _insert_sell_fill(conn, gap_no_outbox)                               # gap (no outbox row)
        ok = _insert_slot(conn, status="inactive", portfolio_id="PF-OK")     # not a gap
        _insert_sell_fill(conn, ok)
        _insert_outbox(conn, asset_id="PF-OK")
        never_sold = _insert_slot(conn, status="holding", portfolio_id=None)  # no sell fill → ignored

    gaps = find_ledger_gap_slots(dsn, trading_date=_DAY)
    gap_ids = {str(g["slot_id"]) for g in gaps}
    assert gap_null in gap_ids
    assert gap_no_outbox in gap_ids
    assert ok not in gap_ids
    assert never_sold not in gap_ids


def test_no_gaps_when_all_recorded(pg_clean):
    import psycopg
    dsn = pg_clean
    with psycopg.connect(dsn, autocommit=True) as conn:
        sid = _insert_slot(conn, status="inactive", portfolio_id="PF-1")
        _insert_sell_fill(conn, sid)
        _insert_outbox(conn, asset_id="PF-1")
    assert find_ledger_gap_slots(dsn, trading_date=_DAY) == []


def test_date_scope_filters_by_sell_fill_day(pg_clean):
    import psycopg
    dsn = pg_clean
    other_day_ts = datetime(2026, 6, 9, 6, 0, tzinfo=timezone.utc)
    with psycopg.connect(dsn, autocommit=True) as conn:
        sid = _insert_slot(conn, status="inactive", portfolio_id="PF-OLD")
        _insert_sell_fill(conn, sid, ts=other_day_ts)
    assert find_ledger_gap_slots(dsn, trading_date=_DAY) == []
    gaps = find_ledger_gap_slots(dsn, trading_date=date(2026, 6, 9))
    assert {str(g["slot_id"]) for g in gaps} == {sid}