package db

import (
	"context"

	"github.com/dtoro/oikos/internal/checkdefaults"
	"github.com/google/uuid"
	"github.com/jackc/pgx/v5"
)

// EnsureEntityChecks derives an entity's default check_defs from the
// monitoring spec of its type (resolving per-entity `monitoring` overrides).
//
// This is the single shared hook that keeps the check graph in sync with
// entity mutations. Both the HTTP create/patch handlers and the MCP
// entity-mutation tools (create_entity, update_entity_attributes) call it so
// that flipping an entity's `monitoring` attribute regenerates checks
// regardless of which surface made the change — previously only the HTTP
// path ran check derivation, so entities mutated via MCP silently produced no
// checks (see plans/2026-08-03-session-review-haos-monitoring-capability-gaps.md, A2).
func EnsureEntityChecks(ctx context.Context, tx pgx.Tx, id uuid.UUID, slug, entityType, name string, attrs []byte) (checkdefaults.Result, error) {
	tree, err := LoadTypeTree(ctx, tx)
	if err != nil {
		return checkdefaults.Result{}, err
	}
	res, err := checkdefaults.Ensure(ctx, tx, tree, checkdefaults.Target{
		ID: id, Slug: slug, Type: entityType, Name: name, Attrs: attrs,
	})
	if err != nil {
		return res, err
	}
	checkdefaults.LogResult(slug, entityType, res)
	return res, nil
}