/* =============================================================================
 * A00_Common/design/logic/design_calc_node_carry.ts
 * 계산 Node 입구(`design_calc_node.ts`)의 노선 바뀐 [저장] 다시 얹기 몫(PLAN 472-6 6-B) — 브라우저가 쓰던 같은 TS.
 *
 *   facility.rebase  입력 rebase { pipes?: { draft · before · after } · structures?: { draft · before · after } } →
 *                    { pipes · structures }(세션 초안을 서버가 따라 옮긴 정본 위에 · `rebasePipeDraft` ·
 *                    `rebaseStructureDraft` · 없는 몫 null)
 *   stations.carry   입력 carry(`RouteCarryInput` — 새 노선 상세 · 옛 노선 세션 칸 · 옛 열쇠 목록 · 측점 주인 ·
 *                    관 세션 장부 · 저장 관 앞뒤) → { patches · outside }(`routeCarryPatches`)
 * ========================================================================== */

import {
  rebasePipeDraft,
  rebaseStructureDraft,
  type FollowingPoint,
  type FollowingStructure,
} from "@util/common_util_route_follow";
import {
  routeCarryPatches,
  type RouteCarryInput,
} from "../../../B06_Section/logic/B06_Section_Route_Carry_Patch";

type Pipe = FollowingPoint & { id?: string | null };
type Structure = FollowingStructure & { structure_id?: string | null };
type Rebase<T> = { draft: T[]; before: T[]; after: T[] };

export interface CarryInputs {
  rebase?: { pipes?: Rebase<Pipe> | null; structures?: Rebase<Structure> | null };
  carry?: RouteCarryInput;
}

/** id → 셈(입구 `RUNNERS` 에 얹음). */
export function carryRunners(inputs: CarryInputs): Record<string, () => unknown> {
  return {
    "facility.rebase": () => {
      const rebase = inputs.rebase;
      if (!rebase) return null;
      const { pipes, structures } = rebase;
      return {
        pipes: pipes ? rebasePipeDraft(pipes.draft, pipes.before, pipes.after) : null,
        structures: structures
          ? rebaseStructureDraft(structures.draft, structures.before, structures.after)
          : null,
      };
    },
    "stations.carry": () => (inputs.carry ? routeCarryPatches(inputs.carry) : null),
  };
}