from nsp.workflow import load_workflow


def test_workflow_loads_8_phases():
    wf = load_workflow()
    assert len(wf.phases) == 8
    assert wf.phases[0].id == "F1"
    assert wf.max_phase == 8
    assert wf.phase_by_num(1).name == "chiarimento"


def test_decision_min_phase_derived():
    wf = load_workflow()
    # question_rewritten is a prerequisite of F3 -> min phase 3
    assert wf.decision_min_phase("question_rewritten") == 3
    # sql_approved is a prerequisite of F7 -> min phase 7
    assert wf.decision_min_phase("sql_approved") == 7
    # datamart_requested / datamart_declined are prerequisites of F8 -> min phase 8
    assert wf.decision_min_phase("datamart_requested") == 8
    assert wf.decision_min_phase("datamart_declined") == 8
    # phase_skipped referenced via decision_subject_exists in F6 -> min phase 6
    assert wf.decision_min_phase("phase_skipped") == 6
    # unknown type -> phase 1 (default)
    assert wf.decision_min_phase("nonexistent_type") == 1


def test_phase_name_lookup():
    wf = load_workflow()
    assert wf.phase_name(1) == "chiarimento"
    assert wf.phase_name(6) == "cte"
    assert wf.phase_name(8) == "datamart"  # the JS drift bug in ChironeWp3 -- F8 MUST be present
    assert wf.phase_name(0) == "?"  # out of range lower
    assert wf.phase_name(9) == "?"  # out of range upper


def test_artifacts_out_per_phase():
    wf = load_workflow()
    assert "schema_linking.json" in wf.phase_by_num(4).artifacts_out
    assert "sql_final.sql" in wf.phase_by_num(7).artifacts_out
    assert "cte_plan.json" in wf.phase_by_num(6).artifacts_out
    assert "ctes/" in wf.phase_by_num(6).artifacts_out  # dir artifact
    assert wf.phase_by_num(1).artifacts_out == []  # F1 produces none


def test_advance_strategy_per_phase():
    wf = load_workflow()
    assert wf.phase_by_num(2).advance == "auto_if_empty"
    assert wf.phase_by_num(6).advance == "auto_if_empty_or_skipped"
    assert wf.phase_by_num(4).advance == "reviewer_decide"
    assert wf.phase_by_num(5).advance == "kind:phase"


def test_schema_version():
    wf = load_workflow()
    assert wf.schema_version == 1