Aislo/M01_MasterData/M01_MasterData_UI_LogicLab_Flow.ts

/* =============================================================================
 * M01_MasterData_UI_LogicLab_Flow.ts
 * 로직 상세 두 칸 — 왼쪽 지금 내용(보기) · 가운데 끌기 막대 · 오른쪽 흐름도 패널
 * 너비 — 패널이 없으면 두 칸 비율(끌기 막대 · localStorage) · 패널이 있으면 패널이 알린 너비(px · 패널 가장자리 끌기)
 * 잇기(mountLogicFlow) — 패널(M02_DF_Panel) · 왼쪽 보기(LogicLab_FlowView) · 입력 값 · 다른 로직 흐름 받기
 * DataFlow 파일은 import() 로 늦게(엔진이 M01 첫 묶음에 안 들어가게). 정함 `docs/raw/M01_쉬운단가/흐름도_적용_정함.md` 2 · 5 · 6 · 7
 * ========================================================================== */

import { currentLanguageIndex } from "@ui/ui_template_locale";
import { el } from "@ui/ui_template_elements";
import { API_BASE_URL } from "@config/config_frontend";
import type { CfLogic } from "../M02_MasterTemplete/DataFlow/M02_DF_Model";
import type { CfValues } from "../M02_MasterTemplete/DataFlow/M02_DF_Eval";
import "./M01_MasterData_UI_LogicLab_Flow.css";

const TEXT = {
  Resize: ["두 칸 너비 — 끌어서 조절", "Drag to resize the two columns"],
  New: ["신규 로직", "New logic"],
  Waiting: ["흐름도 불러오는 중", "Loading the flow diagram"],
  Converted: [
    "옛 식을 흐름도로 바꿔 보임 — 저장하면 흐름도가 정본",
    "Converted from the old formula — saving makes the flow the master",
  ],
  Failed: ["흐름도를 못 띄움 — {v}", "Couldn't open the flow diagram — {v}"],
} as const;

export const tf = (key: keyof typeof TEXT, v = ""): string =>
  TEXT[key][currentLanguageIndex === 1 ? 1 : 0].replace("{v}", v);

const STORE = "m01.logic.flowRatio";
const MIN = 0.25;
const MAX = 0.75;

const clamp = (r: number): number => Math.min(MAX, Math.max(MIN, r));

function readRatio(): number {
  try {
    const r = Number(localStorage.getItem(STORE));
    return r ? clamp(r) : 0.5;
  } catch {
    return 0.5;
  }
}

export interface SplitHandle {
  root: HTMLElement;
  /** 오른쪽 칸 — 흐름도 패널을 붙이는 곳 */
  right: HTMLElement;
  /** 패널이 정한 너비(px) — 끌기 막대는 숨김(패널 가장자리로 조절) · null = 비율로 돌아감 */
  setRight(px: number | null): void;
}

/** 두 칸 만들기 — left 는 지금 화면 그대로 왼쪽에 둠 */
export function buildSplit(left: HTMLElement): SplitHandle {
  const right = el("div", { className: "m01lab-flow__right" });
  const bar = el("div", {
    className: "m01lab-flow__bar",
    attrs: {
      role: "separator",
      "aria-orientation": "vertical",
      "aria-label": tf("Resize"),
      title: tf("Resize"),
      tabindex: "0",
    },
  });
  const leftCol = el("div", { className: "m01lab-flow__left", children: [left] });
  const root = el("div", { className: "m01lab-flow", children: [leftCol, bar, right] });
  let ratio = readRatio();
  let panelPx: number | null = null;
  const apply = (): void => {
    root.style.gridTemplateColumns =
      panelPx === null
        ? `minmax(0, ${ratio}fr) auto minmax(0, ${1 - ratio}fr)`
        : `minmax(0, 1fr) ${panelPx}px`;
  };
  const keep = (): void => {
    try {
      localStorage.setItem(STORE, String(ratio));
    } catch {
      /* 기억 못 해도 지금 화면은 그대로 */
    }
  };
  bar.addEventListener("pointerdown", (ev) => {
    if (ev.button !== 0) return;
    ev.preventDefault();
    const box = root.getBoundingClientRect();
    const move = (m: PointerEvent): void => {
      ratio = clamp((m.clientX - box.left) / box.width);
      apply();
    };
    const up = (): void => {
      window.removeEventListener("pointermove", move);
      window.removeEventListener("pointerup", up);
      keep();
    };
    window.addEventListener("pointermove", move);
    window.addEventListener("pointerup", up);
  });
  // 키보드 — 왼쪽 · 오른쪽 화살표로 조금씩
  bar.addEventListener("keydown", (ev) => {
    const step = ev.key === "ArrowLeft" ? -0.05 : ev.key === "ArrowRight" ? 0.05 : 0;
    if (!step) return;
    ev.preventDefault();
    ratio = clamp(ratio + step);
    apply();
    keep();
  });
  const setRight = (px: number | null): void => {
    panelPx = px;
    bar.hidden = px !== null;
    apply();
  };
  apply();
  return { root, right, setRight };
}

/* ── 흐름 받기 · 잇기 ─────────────────────────────────────────────────── */

export interface FlowAnswer {
  flow: CfLogic;
  converted: boolean;
  notes: string[];
}

/** 마스터 로직의 흐름 — 줄에 흐름이 있으면 그대로 · 없으면 서버가 옛 식을 바꿔 줌 · 길이 없거나 못 받으면 null */
export async function fetchFlow(key: string, file = ""): Promise<FlowAnswer | null> {
  try {
    const q = new URLSearchParams({ key, ...(file ? { file } : {}) });
    const r = await fetch(`${API_BASE_URL}/m01/logic/flow?${q}`, { credentials: "include" });
    if (!r.ok) return null;
    const got = (await r.json()) as Partial<FlowAnswer>;
    return got.flow ? { flow: got.flow, converted: !!got.converted, notes: got.notes ?? [] } : null;
  } catch {
    return null;
  }
}

const loadFlowMods = () =>
  Promise.all([
    import("../M02_MasterTemplete/DataFlow/M02_DF_Panel"),
    import("./M01_MasterData_UI_LogicLab_FlowView"),
    import("../M02_MasterTemplete/DataFlow/M02_DF_Model"),
    import("../M02_MasterTemplete/DataFlow/M02_DF_Eval"),
    import("../M02_MasterTemplete/DataFlow/M02_DF_Api"),
    import("../M02_MasterTemplete/DataFlow/M02_DF_Entry_Detail"),
  ]).then(([panel, view, model, ev, api, detail]) => ({ panel, view, model, ev, api, detail }));

/** 빈 흐름 — 신규 로직 · 흐름을 못 받은 로직 */
export async function emptyFlow(name: string, unit: string): Promise<CfLogic> {
  return (await import("../M02_MasterTemplete/DataFlow/M02_DF_Model")).newLogic(name, unit);
}

export interface LogicFlowOpts {
  split: SplitHandle;
  flow: CfLogic;
  title: string;
  readOnly: boolean;
  /** 변환 알림 — 패널 위 한 줄 */
  notes: string[];
  converted: boolean;
  /** 흐름 로직이면 왼쪽 「지금 내용」 자리(LogicLab_Detail 의 flowHost) */
  leftHost(): HTMLElement | null;
  onChange(lg: CfLogic): void;
}

export interface LogicFlow {
  /** 밖에서 바꿈(고친 것 버리기) — 패널 · 왼쪽 함께 */
  set(lg: CfLogic): void;
  /** 왼쪽만 다시(왼쪽 화면을 새로 그린 뒤) */
  redrawLeft(): void;
  destroy(): void;
}

/** 오른쪽 패널을 띄우고 왼쪽 보기 · 입력 값 · 다른 로직을 이음 */
export async function mountLogicFlow(opts: LogicFlowOpts): Promise<LogicFlow> {
  const M = await loadFlowMods();
  const host = el("div", { className: "m01lab-flow__panel" });
  const note = el("p", { className: "m01lab-flow__note" });
  const notes = [...(opts.converted ? [tf("Converted")] : []), ...opts.notes];
  note.textContent = notes.join(" · ");
  note.hidden = !notes.length;
  opts.split.right.replaceChildren(note, host);
  let lg = opts.flow;
  let values: CfValues = {};
  let valueSig = "";
  let logics: Record<string, CfLogic> = {};
  let logicSig = "";
  let gone = false;

  /** 다른 로직 — 흐름도 저장본(DF-) · 마스터 로직(흐름 받기) */
  const getLogic = async (key: string): Promise<CfLogic | null> =>
    key.startsWith("DF-") ? M.api.cfGet(key) : ((await fetchFlow(key))?.flow ?? null);

  const left = (): void => {
    const at = opts.leftHost();
    if (!at || gone) return;
    M.view.buildFlowView(at, lg, values, { logics });
  };
  /** 입력 값 · 다른 로직 — 물음이 바뀐 때만 다시 받음 · 받으면 왼쪽 다시 */
  const refresh = (): void => {
    let ports: Record<string, Record<string, unknown>> = {};
    try {
      ports = M.ev.evalLogic(lg, values, { logics }).ports;
    } catch {
      /* 셈이 막혀도 물음은 보냄 */
    }
    const pill = (p: { box: string; name: string }): unknown => ports[p.box]?.[p.name] ?? null;
    const asks = M.detail.queriesOf(lg, pill, M.model.elementPort);
    const sig = JSON.stringify(asks.map((a) => a.q));
    if (sig !== valueSig) {
      valueSig = sig;
      void M.detail.fetchValues(M.api.cfValues, lg, pill, M.model.elementPort).then(
        (got) => {
          if (sig !== valueSig || gone) return;
          values = got.values;
          left();
          refresh(); // 받은 값으로 조건 찾기 값이 바뀌면 한 번 더
        },
        () => undefined,
      );
    }
    const keys = JSON.stringify(lg.boxes.map((b) => b.input?.logic?.key ?? ""));
    if (keys !== logicSig) {
      logicSig = keys;
      void M.detail.loadLogics(lg, getLogic).then((got) => {
        if (keys !== logicSig || gone) return;
        logics = got.logics;
        left();
      });
    }
  };

  const panel = M.panel.mountFlowPanel(host, {
    logic: lg,
    title: opts.title,
    readOnly: opts.readOnly,
    logics: getLogic,
    onResize: (px) => opts.split.setRight(px),
    onChange: (next) => {
      lg = next;
      opts.onChange(next);
      left();
      refresh();
    },
  });
  left();
  refresh();
  return {
    set: (next) => {
      lg = next;
      panel.set(next);
      left();
      refresh();
    },
    redrawLeft: left,
    destroy: () => {
      gone = true;
      panel.destroy();
      opts.split.setRight(null);
      opts.split.right.replaceChildren();
    },
  };
}