"""Phase 5 tests — the 10 canonical engineering queries.

Test fixtures seed a small p-test graph and exercise each query. The 3 killer
queries (Q-006/009/011) get dedicated tests that verify they surface real gaps
and DON'T false-positive on well-formed data.
"""

from __future__ import annotations

import pytest

from atocore.engineering.queries import (
    all_gaps,
    decisions_affecting,
    evidence_chain,
    impact_analysis,
    orphan_requirements,
    recent_changes,
    requirements_for,
    risky_decisions,
    system_map,
    unsupported_claims,
)
from atocore.engineering.service import (
    create_entity,
    create_relationship,
    init_engineering_schema,
)
from atocore.models.database import init_db


@pytest.fixture
def seeded_graph(tmp_data_dir):
    """Build a small engineering graph for query tests."""
    init_db()
    init_engineering_schema()

    # Subsystem + components
    ss = create_entity("subsystem", "Optics", project="p-test")
    c1 = create_entity("component", "Primary Mirror", project="p-test")
    c2 = create_entity("component", "Diverger Lens", project="p-test")
    c_orphan = create_entity("component", "Unparented", project="p-test")
    create_relationship(c1.id, ss.id, "part_of")
    create_relationship(c2.id, ss.id, "part_of")

    # Requirements — one satisfied, one orphan
    r_ok = create_entity("requirement", "Surface figure < 25nm RMS", project="p-test")
    r_orphan = create_entity("requirement", "Measurement lambda/20", project="p-test")
    create_relationship(c1.id, r_ok.id, "satisfies")

    # Decisions
    d_ok = create_entity("decision", "Use Zerodur blank", project="p-test")
    d_risky = create_entity("decision", "Use external CGH", project="p-test")
    create_relationship(d_ok.id, ss.id, "affected_by_decision")

    # Assumption (flagged) — d_risky depends on it
    a_flagged = create_entity(
        "parameter", "Vendor lead time 6 weeks",
        project="p-test",
        properties={"flagged": True},
    )
    create_relationship(d_risky.id, a_flagged.id, "based_on_assumption")

    # Validation claim — one supported, one not
    v_ok = create_entity("validation_claim", "Margin is adequate", project="p-test")
    v_orphan = create_entity("validation_claim", "Thermal stability OK", project="p-test")
    result = create_entity("result", "FEA thermal sweep 2026-03", project="p-test")
    create_relationship(result.id, v_ok.id, "supports")

    # Material
    mat = create_entity("material", "Zerodur", project="p-test")
    create_relationship(c1.id, mat.id, "uses_material")

    return {
        "subsystem": ss, "component_1": c1, "component_2": c2,
        "orphan_component": c_orphan,
        "req_ok": r_ok, "req_orphan": r_orphan,
        "decision_ok": d_ok, "decision_risky": d_risky,
        "assumption_flagged": a_flagged,
        "claim_supported": v_ok, "claim_orphan": v_orphan,
        "result": result, "material": mat,
    }


# --- Structure queries ---


def test_system_map_returns_subsystem_with_components(seeded_graph):
    result = system_map("p-test")
    assert result["project"] == "p-test"
    assert len(result["subsystems"]) == 1
    optics = result["subsystems"][0]
    assert optics["name"] == "Optics"
    comp_names = {c["name"] for c in optics["components"]}
    assert "Primary Mirror" in comp_names
    assert "Diverger Lens" in comp_names


def test_system_map_reports_orphan_components(seeded_graph):
    result = system_map("p-test")
    names = {c["name"] for c in result["orphan_components"]}
    assert "Unparented" in names


def test_system_map_includes_materials(seeded_graph):
    result = system_map("p-test")
    primary = next(
        c for s in result["subsystems"] for c in s["components"] if c["name"] == "Primary Mirror"
    )
    assert "Zerodur" in primary["materials"]


def test_decisions_affecting_whole_project(seeded_graph):
    result = decisions_affecting("p-test")
    names = {d["name"] for d in result["decisions"]}
    assert "Use Zerodur blank" in names
    assert "Use external CGH" in names


def test_decisions_affecting_specific_subsystem(seeded_graph):
    ss_id = seeded_graph["subsystem"].id
    result = decisions_affecting("p-test", subsystem_id=ss_id)
    names = {d["name"] for d in result["decisions"]}
    # d_ok has edge to subsystem directly
    assert "Use Zerodur blank" in names


def test_requirements_for_component(seeded_graph):
    c_id = seeded_graph["component_1"].id
    result = requirements_for(c_id)
    assert result["count"] == 1
    assert result["requirements"][0]["name"] == "Surface figure < 25nm RMS"


def test_recent_changes_includes_created_entities(seeded_graph):
    result = recent_changes("p-test", limit=100)
    actions = [c["action"] for c in result["changes"]]
    assert "created" in actions
    assert result["count"] > 0


# --- Killer queries ---


def test_orphan_requirements_finds_unsatisfied(seeded_graph):
    result = orphan_requirements("p-test")
    names = {r["name"] for r in result["gaps"]}
    assert "Measurement lambda/20" in names  # orphan
    assert "Surface figure < 25nm RMS" not in names  # has SATISFIES edge


def test_orphan_requirements_empty_when_all_satisfied(tmp_data_dir):
    init_db()
    init_engineering_schema()
    c = create_entity("component", "C", project="p-clean")
    r = create_entity("requirement", "R", project="p-clean")
    create_relationship(c.id, r.id, "satisfies")
    result = orphan_requirements("p-clean")
    assert result["count"] == 0


def test_risky_decisions_finds_flagged_assumptions(seeded_graph):
    result = risky_decisions("p-test")
    names = {d["decision_name"] for d in result["gaps"]}
    assert "Use external CGH" in names
    assert "Use Zerodur blank" not in names  # has no flagged assumption


def test_unsupported_claims_finds_orphan_claims(seeded_graph):
    result = unsupported_claims("p-test")
    names = {c["name"] for c in result["gaps"]}
    assert "Thermal stability OK" in names
    assert "Margin is adequate" not in names  # has SUPPORTS edge


def test_all_gaps_combines_the_three_killers(seeded_graph):
    result = all_gaps("p-test")
    assert result["orphan_requirements"]["count"] == 1
    assert result["risky_decisions"]["count"] == 1
    assert result["unsupported_claims"]["count"] == 1


def test_all_gaps_clean_project_reports_zero(tmp_data_dir):
    init_db()
    init_engineering_schema()
    create_entity("component", "alone", project="p-empty")
    result = all_gaps("p-empty")
    assert result["orphan_requirements"]["count"] == 0
    assert result["risky_decisions"]["count"] == 0
    assert result["unsupported_claims"]["count"] == 0


# --- Impact + evidence ---


def test_impact_analysis_walks_outbound_edges(seeded_graph):
    c_id = seeded_graph["component_1"].id
    result = impact_analysis(c_id, max_depth=2)
    # Primary Mirror → SATISFIES → Requirement, → USES_MATERIAL → Material
    rel_types = {i["relationship"] for i in result["impacted"]}
    assert "satisfies" in rel_types
    assert "uses_material" in rel_types


def test_evidence_chain_walks_inbound_provenance(seeded_graph):
    v_ok_id = seeded_graph["claim_supported"].id
    result = evidence_chain(v_ok_id)
    # The Result entity supports the claim
    via_types = {e["via"] for e in result["evidence_chain"]}
    assert "supports" in via_types
    source_names = {e["source_name"] for e in result["evidence_chain"]}
    assert "FEA thermal sweep 2026-03" in source_names