"""L1: require_phase_or_exit — the phase-gate guard rewritten vs Workflow.

Used by cte_cmd/decision_cmd/datamart_cmd to refuse an action when the session
hasn't reached a phase yet. The rewrite replaces the old PHASE_NAMES constant
with load_workflow().phase_name(). Exit code 1 (typer.Exit) when below threshold.
"""
import pytest
import typer

from tht.cli.phase_cmd import require_phase_or_exit


def _make_session(tmp_path, current_phase_num: int) -> str:
    """Build a session dir whose current_phase reads as current_phase_num.
    current_phase is derived from the ledger fold (cur = last approved + 1), so
    approving phases 1..N-1 puts the session at phase N."""
    import json

    s = tmp_path / "sess"
    s.mkdir()
    decisions = [
        {"seq": n, "type": "phase_approved", "subject": f"phase:{n}", "ts": "2025-01-01T00:00:00"}
        for n in range(1, current_phase_num)
    ]
    (s / "review_decisions.jsonl").write_text(
        "\n".join(json.dumps(d) for d in decisions) + ("\n" if decisions else "")
    )
    return "sess"


class _StubConfig:
    """Minimal config: paths.sessions points at tmp_path so session_dir resolves there."""

    def __init__(self, tmp_path):
        from tht.config import PathsConfig

        self.paths = PathsConfig(sessions=tmp_path)


def test_require_phase_or_exit_allows_when_at_or_above(tmp_path):
    cfg = _StubConfig(tmp_path)
    session = _make_session(tmp_path, current_phase_num=5)  # at phase 5
    # require phase 4 -> allowed (cur 5 >= 4), no exit
    require_phase_or_exit(cfg, session, min_phase=4)


def test_require_phase_or_exit_allows_when_exactly_at(tmp_path):
    cfg = _StubConfig(tmp_path)
    session = _make_session(tmp_path, current_phase_num=4)  # at phase 4
    require_phase_or_exit(cfg, session, min_phase=4)  # boundary: allowed


def test_require_phase_or_exit_exits_when_below(tmp_path):
    cfg = _StubConfig(tmp_path)
    session = _make_session(tmp_path, current_phase_num=3)  # at phase 3
    with pytest.raises(typer.Exit) as exc_info:
        require_phase_or_exit(cfg, session, min_phase=5)  # require 5 -> exit 1
    assert exc_info.value.exit_code == 1


def test_require_phase_or_exit_message_uses_workflow_phase_name(tmp_path, capsys):
    cfg = _StubConfig(tmp_path)
    session = _make_session(tmp_path, current_phase_num=3)
    with pytest.raises(typer.Exit):
        require_phase_or_exit(cfg, session, min_phase=6)  # phase 6 = cte
    captured = capsys.readouterr()
    # the message must use the workflow-derived name (not a hardcoded constant)
    assert "cte" in captured.err.lower()
    assert "Fase 6" in captured.err