"""Attention evaluation (Q5) — method- and horizon-aware for one initiative."""

from __future__ import annotations

from typing import Any

from steering.kernel.models import HorizonMarker, SteeringBinding
from steering.strategies.next_action.execution_ready import gate_horizon_scope_for_method
from tenant_context import TenantContext

_GATE_METHODS = frozenset(
    {
        "sequential_dependency",
        "program_delivery",
        "maturity_progression",
    }
)


def evaluate_attention(
    ctx: TenantContext,
    *,
    initiative_id: str,
    binding: SteeringBinding,
    horizon: HorizonMarker,
    next_work: list[dict[str, Any]],
    limit: int = 20,
) -> list[dict[str, Any]]:
    """Kernel attention for a single initiative — no fake next when planning debt."""
    from services import actions as action_service
    from services import blockers as blocker_service
    from services import roadmap as roadmap_service
    from services.execution_plan import list_dependencies_for_initiative
    from steering.graph.execution_engine import (
        compute_execution_graph_state,
        compute_planning_debt,
        execution_waiting_to_attention_items,
        planning_debt_to_attention_items,
    )

    items: list[dict[str, Any]] = []

    blockers = blocker_service.list_blockers_for_initiative(
        tenant_id=ctx.tenant_id, initiative_id=initiative_id
    )
    for blocker in blockers:
        if blocker.get("status") not in ("open", "in_progress"):
            continue
        items.append(
            {
                "kind": "open_blocker",
                "severity": "warning",
                "title": blocker.get("title") or "Blocker",
                "summary": "Offener Blocker im Vorhaben",
                "scope_type": "blocker",
                "scope_id": str(blocker["id"]),
                "initiative_id": initiative_id,
                "action_id": (
                    str(blocker["action_id"]) if blocker.get("action_id") else None
                ),
                "blocker_id": str(blocker["id"]),
                "reason_code": "path_blocked",
                "data_source": "steering_kernel",
            }
        )

    actions = action_service.list_actions_for_initiative(
        tenant_id=ctx.tenant_id, initiative_id=initiative_id
    )
    for action in actions:
        if action.get("status") != "blocked":
            continue
        items.append(
            {
                "kind": "blocked_action",
                "severity": "critical",
                "title": action.get("title") or "Arbeitspaket",
                "summary": "Maßnahme ist blockiert",
                "scope_type": "action",
                "scope_id": str(action["id"]),
                "initiative_id": initiative_id,
                "action_id": str(action["id"]),
                "reason_code": "path_blocked",
                "data_source": "steering_kernel",
            }
        )

    gate_scope = gate_horizon_scope_for_method(
        binding.primary_method_key, ctx, initiative_id
    )
    roadmap_items = roadmap_service.list_roadmap_items_for_initiative(
        tenant_id=ctx.tenant_id, initiative_id=initiative_id
    )

    scoped_roadmap = roadmap_items
    scoped_actions = actions
    if gate_scope:
        scope = str(gate_scope)
        scoped_roadmap = [ri for ri in roadmap_items if str(ri.get("id")) == scope]
        scoped_actions = [
            a
            for a in actions
            if a.get("roadmap_item_id") and str(a["roadmap_item_id"]) == scope
        ]

    if binding.primary_method_key in _GATE_METHODS:
        debts = compute_planning_debt(
            actions=scoped_actions, roadmap_items=scoped_roadmap
        )
        items.extend(
            planning_debt_to_attention_items(
                initiative_id=initiative_id, debts=debts
            )
        )

    dependencies = list_dependencies_for_initiative(
        tenant_id=ctx.tenant_id, initiative_id=initiative_id
    )
    graph_state = compute_execution_graph_state(
        actions=actions,
        dependencies=dependencies,
        scope_roadmap_item_id=gate_scope,
    )
    items.extend(
        execution_waiting_to_attention_items(
            initiative_id=initiative_id,
            actions=actions,
            graph_state=graph_state,
        )
    )

    if (
        not next_work
        and binding.primary_method_key in _GATE_METHODS
        and horizon.kind == "gate"
    ):
        has_planning = any(i.get("reason_code") == "planning_debt" for i in items)
        has_waiting = any(i.get("reason_code") == "execution_waiting" for i in items)
        if not has_planning and not has_waiting and not graph_state.get("ready_actions"):
            items.append(
                {
                    "kind": "initiative_without_next_action",
                    "severity": "info",
                    "title": horizon.gate_title or "Aktiver Horizont",
                    "summary": "Keine ausführungsbereite Arbeit im aktiven Horizont",
                    "scope_type": "milestone",
                    "scope_id": horizon.gate_roadmap_item_id,
                    "initiative_id": initiative_id,
                    "reason_code": "horizon_no_ready_work",
                    "data_source": "steering_kernel",
                }
            )

    for item in items:
        item.setdefault("data_source", "steering_kernel")

    items.sort(
        key=lambda x: {"critical": 0, "warning": 1, "info": 2}.get(
            x.get("severity", "info"), 9
        )
    )
    return items[:limit]