// frontend/components/tasks/ListView.tsx
"use client";
import { Icon } from "@/components/Icon";
import { cx } from "@/lib/cx";
import { COLUMNS, STATUS_META, dueDay, dueLabel, isSoon, pct, stat } from "@/lib/tasks/tree";
import type { Person, Project, Task } from "@/lib/types";
import { Av, Tag } from "./bits";

function LRow({
  t,
  people,
  projects,
  onOpen,
}: {
  t: Task;
  people: Record<string, Person>;
  projects: Record<string, Project>;
  onOpen: (id: string) => void;
}) {
  const s = stat(t);
  const sm = STATUS_META[t.status];
  const soon = isSoon(t);
  return (
    <div className={cx("lrow", t.status === "done" && "done-row")} onClick={() => onOpen(t.id)}>
      <div className="lt">
        <span className="lt-status" style={{ background: sm.c }} />
        <span className="lt-title">{t.title}</span>
      </div>
      <div className="lcell hide-sm">
        <Tag project={projects[t.project_id]} />
      </div>
      <div className="lcell center hide-sm">
        <Av person={t.assignee_id ? people[t.assignee_id] : null} />
      </div>
      <div className="lcell">
        <span className={cx("due", soon && "soon")}>
          <Icon name="cal" /> {dueLabel(t.due)}
        </span>
      </div>
      <div className="lcell hide-sm">
        <span className={cx("prio-flag", `prio-${t.prio}`)}>
          <Icon name="flag" /> {t.prio}
        </span>
      </div>
      <div className="lcell">
        {s.total > 0 ? (
          <span className="lprog">
            <span className="bar">
              <span style={{ width: pct(t) + "%" }} />
            </span>
            <span className="n">
              {s.done}/{s.total}
            </span>
          </span>
        ) : (
          <span className="n" style={{ color: "var(--faint)" }}>
            —
          </span>
        )}
      </div>
    </div>
  );
}

export function ListView({
  tasks,
  people,
  projects,
  onOpen,
}: {
  tasks: Task[];
  people: Record<string, Person>;
  projects: Record<string, Project>;
  onOpen: (id: string) => void;
}) {
  const groups = COLUMNS.map((col) => ({
    ...col,
    items: tasks
      .filter((t) => t.status === col.id)
      .sort((a, b) => dueDay(a.due) - dueDay(b.due)),
  })).filter((g) => g.items.length > 0);
  return (
    <div className="lgroups">
      {groups.map((g) => (
        <div className="lgroup" key={g.id}>
          <div className="lgroup-head">
            <span className="lgroup-dot" style={{ background: g.accent }} />
            <span className="lgroup-label">{g.label}</span>
            <span className="lgroup-count">{g.items.length}</span>
          </div>
          <div className="ltable">
            <div className="lhead">
              <div>작업</div>
              <div className="hide-sm">프로젝트</div>
              <div className="center hide-sm">담당</div>
              <div>마감</div>
              <div className="hide-sm">우선순위</div>
              <div>진행</div>
            </div>
            {g.items.map((t) => (
              <LRow key={t.id} t={t} people={people} projects={projects} onOpen={onOpen} />
            ))}
          </div>
        </div>
      ))}
      {groups.length === 0 && <div className="lempty">표시할 작업이 없어요</div>}
    </div>
  );
}