"use client";
/* The catalogue on the phone.
 *
 * This used to be one of the rows under "On the desktop" — listed, greyed out, untappable, with
 * the note that adding garments is a sit-down job. It genuinely is, for a bulk import of two
 * hundred lines. It is not for the thing that actually happens in a linen room: a new garment
 * turns up at the counter and needs to exist before it can be scanned in.
 *
 * So this is the whole catalogue, not just what's on the shelf — /m/stock deliberately shows only
 * variants with history, which means a garment created five minutes ago wouldn't appear there. */
import Link from "next/link";
import { useMemo, useState } from "react";
import { useDerived, useSnap } from "@/lib/client";
import { label, type Item } from "@/lib/compute";
import { INK, IconPlus, MBody, MEmpty, MNav, MNote, MRow, MRule, MSection, MTop, inputStyle } from "@/components/m";

export default function MCatalogue() {
  const { s, isAdmin } = useSnap();
  const { byId } = useDerived();
  const [q, setQ] = useState("");
  const [showArchived, setShowArchived] = useState(false);

  const rows = useMemo(() => {
    const needle = q.trim().toLowerCase();
    return s.catalog
      .filter((i: Item) => (showArchived ? i.archived : !i.archived))
      .map((i: Item) => ({
        ...i,
        name: label(byId[i.id] ?? i),
        sub: [i.sizes.length ? `${i.sizes.length} size${i.sizes.length === 1 ? "" : "s"}` : "No sizes yet", i.supplier || "No supplier", i.sku].filter(Boolean).join(" · "),
      }))
      .filter((i) => !needle || `${i.name} ${i.sku} ${i.supplier} ${i.type} ${i.group}`.toLowerCase().includes(needle))
      .sort((a, b) => a.name.localeCompare(b.name));
  }, [s.catalog, byId, q, showArchived]);

  const archivedCount = s.catalog.filter((i: Item) => i.archived).length;
  const addLink: React.CSSProperties = {
    display: "flex", alignItems: "center", gap: 12, minHeight: 64, padding: "0 20px",
    border: "2px solid " + INK, color: INK, textDecoration: "none",
    fontFamily: "var(--font-heading)", fontWeight: 800, fontSize: 14, letterSpacing: "0.08em", textTransform: "uppercase",
  };

  return (
    <>
      <MTop title="Catalogue" right={`${rows.length} item${rows.length === 1 ? "" : "s"}`} back />
      <MRule />
      <MBody>
        <div style={{ padding: 16, borderBottom: "2px solid " + INK }}>
          <input value={q} onChange={(e) => setQ(e.target.value)} placeholder="Garment, code, supplier" aria-label="Filter the catalogue" style={inputStyle} />
        </div>

        {isAdmin && (
          <div style={{ padding: 16, borderBottom: "1px solid var(--color-divider)" }}>
            <Link href="/m/catalogue/new" style={addLink}>
              <IconPlus /><span style={{ flex: 1 }}>New garment</span>
            </Link>
          </div>
        )}

        <MSection label={showArchived ? "Archived" : "Garments"} right={isAdmin ? "Tap to edit" : undefined} />
        {rows.length === 0
          ? <MEmpty
              title={q ? "Nothing matches" : showArchived ? "Nothing archived" : "No garments yet"}
              sub={q ? "Try a shorter search." : isAdmin ? "Add the first one and it can be scanned in straight away." : "An admin sets the catalogue up."} />
          : rows.slice(0, 300).map((i) => (
              <MRow
                key={i.id}
                href={isAdmin ? `/m/catalogue/${i.id}` : undefined}
                mark={i.archived ? "mute" : "ink"}
                title={i.name}
                sub={i.sub}
                right={<span style={{ fontSize: 12, color: "var(--color-neutral-600)" }}>{i.cost ? `$${i.cost.toFixed(2)}` : ""}</span>}
              />
            ))}

        {archivedCount > 0 && (
          <div style={{ padding: 16 }}>
            <button
              onClick={() => setShowArchived(!showArchived)}
              style={{ background: "none", border: 0, padding: 0, font: "inherit", fontSize: 13, fontWeight: 700, color: "var(--color-accent-700)", cursor: "pointer" }}>
              {showArchived ? "Back to the current catalogue" : `Show ${archivedCount} archived`}
            </button>
          </div>
        )}

        {!isAdmin && <MNote>Only an admin can change the catalogue. You can still see what exists.</MNote>}
      </MBody>
      <MNav />
    </>
  );
}