/* =============================================================================
 * B01_Dashboard_UI_ProjectList_Parts.ts
 * 프로젝트 목록 · 상세 공용 조각(PLAN 548) — 종류 배지 · 단계 글 · 진행 막대 · 썸네일 선 · 칸반 칸 이름.
 * ========================================================================== */

import { el } from "@ui/ui_template_elements_base";
import { workflowSteps } from "../A00_Common/b_page_scaffold";
import { goToWorkflowStage, WORKFLOW_STEP_ROUTES } from "../A00_Common/b_workflow_nav";
import { groupFlowOf } from "../A00_Common/group_workflow";
import type { RoutePath } from "@config/config_frontend";
import type { BoardColumn, OverviewProject } from "./B01_Dashboard_Api_Projects";
import { agoText } from "../common_util/common_util_time";
import { L } from "./B01_Dashboard_UI_Common";

/** 종류 — 칩 · 배지 차례 · 사방설계 = 준비 중 */
export const KINDS = [
  { key: "ROAD", label: () => L("DE_New_Road") },
  { key: "PLAN", label: () => L("DE_New_Plan") },
  { key: "STABILITY", label: () => L("DE_New_Stability") },
  { key: "EROSION", label: () => L("DE_New_Erosion"), soon: true },
] as const;

export const kindLabel = (kind?: string | null): string =>
  (KINDS.find((k) => k.key === (kind ?? "ROAD")) ?? KINDS[0]).label();

export function kindBadge(kind?: string | null): HTMLElement {
  const key = (kind ?? "ROAD").toLowerCase();
  return el("span", { className: `b01-proj-badge b01-proj-badge--${key}`, text: kindLabel(kind) });
}

export const BOARD_COLUMNS: { key: BoardColumn; label: string }[] = [
  { key: "start", label: "시작 전" },
  { key: "design", label: "설계 중" },
  { key: "review", label: "검토" },
  { key: "confirm", label: "확정 대기" },
  { key: "done", label: "완료" },
];

export const boardLabel = (key: BoardColumn): string =>
  BOARD_COLUMNS.find((c) => c.key === key)?.label ?? key;

/** 종류별 단계 이름 · 주소 */
export function stageFlow(kind?: string | null): {
  steps: string[];
  routes: readonly RoutePath[];
} {
  const group = groupFlowOf(kind);
  return group
    ? { steps: group.steps, routes: group.routes }
    : { steps: workflowSteps(), routes: WORKFLOW_STEP_ROUTES };
}

/** 지금 단계 번호(0 부터) · 마친 단계 수 */
export function stageProgress(project: OverviewProject): { current: number; done: number } {
  const stages = project.workflow_state?.stages ?? [];
  return {
    current: project.workflow_state?.current_stage ?? 0,
    done: stages.filter((s) => s.state === "COMPLETE").length,
  };
}

/** 「횡단설계 4/7」 — 시작 전 = 0 · 완료 = 전체 */
export function stageText(project: OverviewProject): string {
  const { steps } = stageFlow(project.project_kind);
  const total = project.stage_total || steps.length;
  if (!total) return L("DE_New_Soon");
  const { current } = stageProgress(project);
  if (project.board === "done") return `완료 ${total}/${total}`;
  const n = project.board === "start" ? 0 : current + 1;
  return `${steps[current] ?? ""} ${n}/${total}`;
}

export function progressBar(project: OverviewProject): HTMLElement {
  const total = project.stage_total || 1;
  const bar = el("span", { className: "b01-proj-bar" });
  const fill = el("i");
  fill.style.width = `${Math.round((stageProgress(project).done / total) * 100)}%`;
  bar.append(fill);
  return bar;
}

/** 단계 점 — 마침 · 지금 · 남음 */
export function stageDots(project: OverviewProject): HTMLElement {
  const total = project.stage_total;
  const { current } = stageProgress(project);
  const states = new Map((project.workflow_state?.stages ?? []).map((s) => [s.stage_no, s.state]));
  const row = el("span", { className: "b01-proj-dots" });
  for (let i = 0; i < total; i += 1) {
    const state = states.get(i);
    const cls =
      state === "COMPLETE"
        ? "is-done"
        : state === "STALE" || state === "FAILED"
          ? "is-stale"
          : i === current && project.board !== "start"
            ? "is-cur"
            : "";
    row.append(el("i", { className: cls }));
  }
  return row;
}

/** 단계 화면으로 — 종류별 주소 */
export function openStage(project: OverviewProject, index: number): void {
  const { routes } = stageFlow(project.project_kind);
  const route = routes[Math.max(0, Math.min(index, routes.length - 1))];
  if (route) void goToWorkflowStage(project.id, route);
}

/** 썸네일 선 — 카드 요약(547-1) 0~1 칸 좌표(y 아래로) · 비율 그대로 가운데 · 없으면 빈 판 */
export function thumbSvg(points: number[][] | null | undefined): SVGElement {
  const ns = "http://www.w3.org/2000/svg";
  const svg = document.createElementNS(ns, "svg");
  svg.setAttribute("viewBox", "-0.1 -0.1 1.2 1.2");
  svg.classList.add("b01-proj-thumb");
  if (!points || points.length < 2) return svg;
  const path = document.createElementNS(ns, "path");
  path.setAttribute("d", points.map(([x, y], i) => `${i ? "L" : "M"}${x} ${y}`).join(" "));
  svg.append(path);
  return svg;
}

/** 「오늘」 · 「어제」 · 「n 일 전」 · 그 밖 날짜 */
export function ago(project: OverviewProject): string {
  return agoText(project.updated_at);
}