from __future__ import annotations

from pathlib import Path

import pytest

from gyxx_flow.ops.effects import (
    EffectAlreadyApplied,
    EffectLedger,
    EffectStateAmbiguous,
)


def test_effect_ledger_blocks_applied_and_ambiguous_replays(tmp_path: Path) -> None:
    ledger = EffectLedger(tmp_path)
    first = ledger.begin(
        workflow_id="product.daily",
        business_date="2026-07-27",
        step_id="legacy_execute",
        run_id="run-001",
    )
    ledger.mark_applied(first)

    with pytest.raises(EffectAlreadyApplied):
        ledger.begin(
            workflow_id="product.daily",
            business_date="2026-07-27",
            step_id="legacy_execute",
            run_id="run-002",
        )

    ambiguous = ledger.begin(
        workflow_id="product.daily",
        business_date="2026-07-28",
        step_id="legacy_execute",
        run_id="run-003",
    )
    ledger.mark_ambiguous(ambiguous, reason="nonzero-exit")
    with pytest.raises(EffectStateAmbiguous):
        ledger.begin(
            workflow_id="product.daily",
            business_date="2026-07-28",
            step_id="legacy_execute",
            run_id="run-004",
        )


def test_effect_ledger_leaves_in_progress_claim_ambiguous_after_crash(
    tmp_path: Path,
) -> None:
    ledger = EffectLedger(tmp_path)
    ledger.begin(
        workflow_id="shop.metrics.weekly",
        business_date="2026-07-27",
        step_id="legacy_collect",
        run_id="run-001",
    )

    with pytest.raises(EffectStateAmbiguous):
        ledger.begin(
            workflow_id="shop.metrics.weekly",
            business_date="2026-07-27",
            step_id="legacy_collect",
            run_id="run-002",
        )