// frontend/components/calendar/WeekView.tsx — 주 뷰 (실제 날짜 기반 시간 그리드)
"use client";
import type { MouseEvent } from "react";
import { HOURS, dayNum, timeOfPx, topOf } from "@/lib/calendar/time";
import type { CalEvent, Calendar, FocusBlock as FocusBlockT } from "@/lib/calendar/types";
import { EvBlock, type EvCommit } from "./EvBlock";
import { FocusBlock } from "./FocusBlock";

function nowTopPx(): number {
  const d = new Date();
  return topOf(`${String(d.getHours()).padStart(2, "0")}:${String(d.getMinutes()).padStart(2, "0")}`);
}

export function WeekView({
  events,
  focusBlocks,
  calMap,
  weekDates,
  weekdays,
  todayDate,
  onOpen,
  onSlotClick,
  onCommit,
}: {
  events: CalEvent[];
  focusBlocks: FocusBlockT[];
  calMap: Record<string, Calendar>;
  weekDates: string[]; // ISO 7개(일~토)
  weekdays: string[];
  todayDate: string;
  onOpen: (ev: CalEvent, e: MouseEvent) => void;
  onSlotClick: (dateIso: string, time: string) => void;
  onCommit?: EvCommit;
}) {
  const nowTop = nowTopPx();
  // 빈 시간 슬롯 클릭 → 생성. 이벤트/집중 블록은 stopPropagation 으로 제외됨.
  const slotClick = (iso: string) => (e: MouseEvent<HTMLDivElement>) => {
    const rect = e.currentTarget.getBoundingClientRect();
    onSlotClick(iso, timeOfPx(e.clientY - rect.top));
  };
  return (
    <div className="cpanel">
      <div className="wk-head">
        <div className="wk-corner" />
        {weekDates.map((iso, i) => (
          <div
            key={iso}
            className={
              "wk-dh" + (iso === todayDate ? " today" : "") + (i === 0 || i === 6 ? " wknd" : "")
            }
          >
            <div className="wd">{weekdays[i]}</div>
            <div className="dn">{dayNum(iso)}</div>
          </div>
        ))}
      </div>
      <div className="wk-body" role="region" aria-label="주간 시간표" tabIndex={0}>
        <div className="wk-times">
          {HOURS.map((h) => (
            <div key={h} className="wk-thour">
              <span>{h}:00</span>
            </div>
          ))}
        </div>
        {weekDates.map((iso, i) => {
          const dayEvents = events.filter((e) => e.date === iso);
          const dayAllDay = dayEvents.filter((e) => !e.start);
          const dayTimed = dayEvents.filter((e) => e.start);
          const dayFocus = focusBlocks.filter((b) => b.date === iso);
          return (
            <div
              key={iso}
              data-date={iso}
              className={"wk-col" + (i === 0 || i === 6 ? " wknd" : "")}
              onClick={slotClick(iso)}
            >
              {HOURS.map((h) => (
                <div key={h} className="wk-hr" />
              ))}
              {iso === todayDate && <div className="wk-now" style={{ top: nowTop + "px" }} />}
              {dayFocus.map((b) => (
                <FocusBlock key={b.id} b={b} />
              ))}
              {dayAllDay.map((ev, ai) => (
                <EvBlock key={ev.id} ev={ev} cal={calMap[ev.cal]} onClick={onOpen} idx={ai} />
              ))}
              {dayTimed.map((ev) => (
                <EvBlock
                  key={ev.id}
                  ev={ev}
                  cal={calMap[ev.cal]}
                  onClick={onOpen}
                  onCommit={onCommit}
                />
              ))}
            </div>
          );
        })}
      </div>
    </div>
  );
}