Aislo/A00_Common/design/design_pipeline_probe.ts

/* =============================================================================
 * A00_Common/design/design_pipeline_probe.ts
 * 계산 묶음 아무 누가거리 한 장(368-4 · 요구 240-21) — 종단 원지반 점 작은 창 = 지금 계획선(초안 포함).
 *
 * 묶음 출력(노선 · 측점 · 종단 · 횡단 입력 · 관 · 구조물)을 읽기만 하고, 같은 단계 함수(ground · cross ·
 * `crossWithUphill` · `stationSection`)를 그 자리 측점 하나로 다시 부름 — [측점 추가] 뒤 묶음이 낼 측점과
 * 같은 틀 · 반경 · 확폭(기존 측점 + 그 자리로 셈). 파생 저장 · 캐시 · 묶음 상태는 안 건드림.
 * 지형 격자가 없거나 분석 지형 ≠ 설계 지형이면 null(부르는 쪽이 서버 미리 뜨기로).
 * ========================================================================== */

import { pagePipeline } from "./design_pipeline_page";
import type {
  CrossOutput,
  GroundOutput,
  StageContext,
  StageName,
} from "./logic/design_pipeline_types";
import { probeStation } from "./logic/design_pipeline_probe_station";
import { groundStageDeps } from "../../B05_Profile/B05_Profile_Api_TerrainGrid";
import { createGroundStage } from "../../B05_Profile/logic/B05_Profile_Pipeline_RouteGround";
import {
  crossWithShapes,
  crossAtSeat,
  crossWithUphill,
  shapeStatus,
  type CrossInput,
} from "../../B05_Profile/logic/B05_Profile_Pipeline_Detail";
import { fetchStructureTypes } from "../../B05_Profile/B05_Profile_Api_Structures";
import { createCrossStage } from "../../B06_Section/logic/B06_Section_Cross_Stage";
import { pipelineCrossAt } from "../../B05_Profile/B05_Profile_UI_RouteEdit_Cross";
import type { CrossPreviewResponse } from "../../B05_Profile/B05_Profile_Api_Replan";

const SAME_M = 1e-6;

/**
 * 지금 계획선(초안 포함)으로 그 누가거리 임시 횡단 — 묶음이 아직 안 셌거나 격자 없음 · 분석 지형 ≠ 설계 지형이면 null.
 */
export async function pipelineCrossAtChainage(
  projectId: string,
  chainageM: number,
  intervalM: number,
): Promise<CrossPreviewResponse | null> {
  const pipe = pagePipeline(projectId);
  const route = pipe?.output("route");
  const profile = pipe?.output("profile");
  const ground = pipe?.output("ground");
  if (!pipe || !route || !profile || !ground) return null;
  const deps = groundStageDeps(projectId);
  const local = deps.grid();
  const terrain = pipe.input("route")?.terrain ?? null;
  if (!local || (terrain !== null && terrain !== local.design)) return null;

  const inputs = {
    route: pipe.input("route"),
    alignment: pipe.input("alignment"),
    cross: pipe.input("cross"),
    pipes: pipe.input("pipes"),
    structures: pipe.input("structures"),
  };
  const existing = ground.stations.find((s) => Math.abs(s.chainageM - chainageM) < SAME_M);
  let station = existing ?? null;
  if (!station) {
    const probe = probeStation(route.line, route.curves, ground.stations, chainageM);
    if (!probe) return null;
    // ground 단계 그대로 — 측점 하나 · 종단 지반선은 안 뜸(노선 선 빼고 넘김)
    const ctx = {
      generation: 0,
      range: null,
      signal: new AbortController().signal,
      inputs,
      out: { stations: [probe], route: { ...route, line: null } },
      before: {},
      prev: null,
    } as unknown as StageContext<"ground">;
    const filled = (await createGroundStage(deps)(ctx)) as GroundOutput;
    station = filled.stations[0] ?? null;
  }
  if (!station) return null;
  // 시설 맥락 = 지금 현황을 그 측점에 얹은 그림에서(묶음 cross 와 같음 · 457)
  const status = shapeStatus(
    inputs.pipes,
    inputs.structures,
    await fetchStructureTypes(true).catch(() => []),
  );
  const shaped = crossWithShapes(
    crossAtSeat(inputs.cross as CrossInput | null, [station]),
    [station],
    status,
  );
  const out = {
    profile,
    ground: { stations: [station], longitudinal: { chainageM: [], z: [] } },
  } as Partial<Record<StageName, unknown>>;
  const cross: CrossOutput = createCrossStage({ grid: deps.grid }).stage({
    generation: 0,
    range: null,
    signal: new AbortController().signal,
    inputs: { ...inputs, cross: crossWithUphill(shaped, [station]) },
    out,
    before: {},
    prev: null,
  } as unknown as StageContext<"cross">);
  // 평면 우측 횡단 판과 같은 꼴(그림 · 요약) — 이 측점 하나만 실은 묶음처럼 넘김
  const one = {
    output: (name: StageName) =>
      name === "ground" ? { stations: [station] } : name === "cross" ? cross : null,
  } as unknown as Parameters<typeof pipelineCrossAt>[0];
  return pipelineCrossAt(one, chainageM, intervalM, undefined);
}