"""Unit tests — sprint commit proposal rankers (P6)."""

from __future__ import annotations

from steering.eval_context import SteeringEvalContext
from steering.kernel.models import HorizonMarker, LifecycleContext, SteeringBinding
from steering.proposals.sprint_commit import propose_sprint_commit
from tenant_context import TenantContext


def _ctx(
    *,
    backlog_items: list,
    work_cycles: list,
    actions: list | None = None,
    vocabulary: dict | None = None,
) -> SteeringEvalContext:
    binding = SteeringBinding(
        primary_method_key="continuous_product",
        composition_modifier="agile_iteration",
        next_work_strategy_key="agile_iteration",
    )
    lifecycle = LifecycleContext(
        current_state="execution",
        current_state_label="Ausführung",
        slot_map={},
        active_slots=(),
        operational_slots=(),
    )
    horizon = HorizonMarker(kind="work_cycle", work_cycle_id="wc-1", work_cycle_title="S1")
    eval_ctx = SteeringEvalContext(
        tenant_ctx=TenantContext(
            user_id="u1",
            email="t@example.com",
            display_name="Test",
            portal_role="user",
            tenant_id="t1",
            tenant_slug="t",
            tenant_name="T",
            tenant_role="admin",
            actor_id=None,
            actor_type=None,
            session_token="test",
            capabilities=frozenset(),
        ),
        initiative_id="init-1",
        binding=binding,
        horizon=horizon,
        lifecycle=lifecycle,
        operating_context={
            "steering_elements": ["work_cycle_scope", "backlog_epic_hierarchy"],
            "data_slices": ["backlog", "work_cycles"],
            "backlog_vocabulary": vocabulary
            or {"convertible_kinds": ["story", "bug", "issue"]},
        },
    )
    eval_ctx._backlog_items = backlog_items
    eval_ctx._work_cycles = work_cycles
    eval_ctx._actions = actions or []
    return eval_ctx


def test_critical_story_can_rank_before_normal_bug():
    proposals = propose_sprint_commit(
        _ctx(
            work_cycles=[{"id": "wc-1", "title": "Sprint 1", "status": "planned", "sort_order": 0}],
            backlog_items=[
                {"id": "s1", "title": "Critical story", "item_kind": "story", "status": "accepted", "priority": "critical", "sort_order": 1},
                {"id": "b1", "title": "Minor bug", "item_kind": "bug", "status": "accepted", "priority": "normal", "sort_order": 0},
            ],
        )
    )
    assert proposals[0]["scope_id"] == "s1"
    assert proposals[0]["ranker_key"] == "heuristic_v0"
    assert any(f["code"] == "priority" for f in proposals[0]["factors"])


def test_dependency_blocked_bug_ranks_after_ready_story():
    proposals = propose_sprint_commit(
        _ctx(
            work_cycles=[{"id": "wc-1", "title": "Sprint 1", "status": "planned", "sort_order": 0}],
            backlog_items=[
                {"id": "s1", "title": "Ready story", "item_kind": "story", "status": "accepted", "priority": "normal", "sort_order": 1},
                {
                    "id": "b1",
                    "title": "Blocked bug",
                    "item_kind": "bug",
                    "status": "accepted",
                    "priority": "critical",
                    "sort_order": 0,
                    "parent_action_id": "a-feature",
                },
            ],
            actions=[
                {"id": "a-feature", "title": "Feature", "status": "in_progress", "work_cycle_id": None},
            ],
        )
    )
    assert proposals[0]["scope_id"] == "s1"
    blocked = next(p for p in proposals if p["scope_id"] == "b1")
    assert blocked["dependency_blocked"] is True
    assert blocked["reason_code"] == "waiting_on_feature_action"


def test_sprint_commit_empty_without_planable_cycle():
    proposals = propose_sprint_commit(
        _ctx(
            work_cycles=[],
            backlog_items=[
                {"id": "s1", "title": "Story", "item_kind": "story", "status": "accepted", "priority": "normal", "sort_order": 0},
            ],
        )
    )
    assert proposals == []