Search Modal

"use client";

import * as React from "react";
import { useCallback, useEffect, useMemo, useRef, useState } from "react";
import {
  Buildings,
  ChatTeardropText,
  Checks,
  EnvelopeSimple,
  FileArrowDown,
  ListPlus,
  MagnifyingGlass,
  Plus,
  RadioButton,
  ShareFat,
  SlidersHorizontal,
  Users,
  X,
} from "@phosphor-icons/react";
import { cn } from "@/lib/utils";

/**
 * Search Modal
 *
 * A minimalist command-palette panel: a search bar that live-filters the result
 * list, removable "I'm looking for…" tags, people/results rows with per-row
 * actions, a quick-actions list with keyboard hints, and a files section.
 *
 * Ported from the vanilla "CodeGrid Modern Minimalist Search Modal" into a
 * single, self-contained, prop-driven React component. Every section is data
 * driven and optional, icons are Phosphor, and it adapts to light and dark mode.
 */

export interface SearchTag {
  label: string;
  icon?: React.ReactNode;
}

export interface SearchResultAction {
  icon: React.ReactNode;
  label?: string;
  onClick?: () => void;
}

export interface SearchResult {
  /** Primary label (also matched against the query). */
  name: string;
  /** Secondary text such as an email or context (also matched). */
  meta?: string;
  /** Avatar image URL. Falls back to a neutral circle. */
  avatar?: string;
  /** Link target for the row. */
  href?: string;
  /** Trailing action icons. */
  actions?: SearchResultAction[];
}

export interface QuickAction {
  label: string;
  icon?: React.ReactNode;
  /** Keyboard hint shown on the right (e.g. "E"). */
  shortcut?: string;
  onClick?: () => void;
}

export interface SearchFile {
  name: string;
  /** File extension shown dimmed after the name (e.g. ".pdf"). */
  ext?: string;
  icon?: React.ReactNode;
  /** Show the green "verified" checks next to the name. */
  verified?: boolean;
  onShare?: () => void;
}

export interface SearchModalProps {
  /** Placeholder for the search input. */
  placeholder?: string;
  /** Removable filter tags. */
  tags?: SearchTag[];
  /** Result rows, live-filtered by the query. */
  results?: SearchResult[];
  /** Quick-action rows. */
  quickActions?: QuickAction[];
  /** File rows. */
  files?: SearchFile[];
  /** Initial query value. */
  defaultQuery?: string;
  /** Called as the query changes. */
  onQueryChange?: (query: string) => void;
  /** Called when a result row is clicked. */
  onSelectResult?: (result: SearchResult, index: number) => void;
  /** Extra classes for the root panel. */
  className?: string;

  /** Render as a centered overlay with a backdrop instead of an inline panel. */
  modal?: boolean;
  /** Controlled open state (modal mode). */
  open?: boolean;
  /** Uncontrolled initial open state (modal mode). Defaults to false. */
  defaultOpen?: boolean;
  /** Called when the modal opens (true) or closes (false). */
  onOpenChange?: (open: boolean) => void;
  /** Key (pressed with ⌘/Ctrl) that toggles the modal. Defaults to "k"; set null to disable. */
  hotkey?: string | null;
  /** Close the modal on Escape. Defaults to true. */
  closeOnEscape?: boolean;
  /** Extra classes for the overlay wrapper (e.g. override `fixed` with `absolute` to scope it). */
  overlayClassName?: string;
}

const ICON = "h-[18px] w-[18px] text-neutral-400 dark:text-neutral-500";

const DEFAULT_TAGS: SearchTag[] = [
  { label: "Reactions", icon: <RadioButton className="h-4 w-4" /> },
  { label: "People", icon: <Users className="h-4 w-4" /> },
  { label: "Companies", icon: <Buildings className="h-4 w-4" /> },
];

const DEFAULT_RESULTS: SearchResult[] = [
  {
    name: "Jason Woordheart",
    meta: "jason@dribbble.com",
    actions: [
      { icon: <ChatTeardropText className="h-4 w-4" />, label: "Message" },
      { icon: <ListPlus className="h-4 w-4" />, label: "Add to list" },
    ],
  },
  {
    name: "Rob Miller",
    meta: "rob@icloud.com",
    actions: [{ icon: <ListPlus className="h-4 w-4" />, label: "Add to list" }],
  },
  {
    name: "Hannah Steward",
    meta: "replied on thread",
    actions: [
      { icon: <EnvelopeSimple className="h-4 w-4" />, label: "Email" },
      { icon: <ListPlus className="h-4 w-4" />, label: "Add to list" },
    ],
  },
];

const DEFAULT_QUICK_ACTIONS: QuickAction[] = [
  { label: "Create new task", shortcut: "E" },
  { label: "Create note", shortcut: "S" },
  { label: "Add member", shortcut: "R" },
];

const DEFAULT_FILES: SearchFile[] = [
  { name: "Invoice", ext: ".pdf", verified: true },
];

export function SearchModal({
  placeholder = "Search for action, people, instruments",
  tags = DEFAULT_TAGS,
  results = DEFAULT_RESULTS,
  quickActions = DEFAULT_QUICK_ACTIONS,
  files = DEFAULT_FILES,
  defaultQuery = "",
  onQueryChange,
  onSelectResult,
  className,
  modal = false,
  open,
  defaultOpen = false,
  onOpenChange,
  hotkey = "k",
  closeOnEscape = true,
  overlayClassName,
}: SearchModalProps) {
  const [query, setQuery] = useState(defaultQuery);
  const [activeTags, setActiveTags] = useState<SearchTag[]>(tags);

  const inputRef = useRef<HTMLInputElement>(null);

  // Open state — controlled via `open`, otherwise internal.
  const isControlled = open !== undefined;
  const [internalOpen, setInternalOpen] = useState(defaultOpen);
  const actualOpen = isControlled ? open : internalOpen;

  const setOpen = useCallback(
    (value: boolean) => {
      if (!isControlled) setInternalOpen(value);
      onOpenChange?.(value);
    },
    [isControlled, onOpenChange],
  );

  // Keep the latest open state / setter reachable from the one-time listener.
  const openRef = useRef(actualOpen);
  const setOpenRef = useRef(setOpen);
  useEffect(() => {
    openRef.current = actualOpen;
    setOpenRef.current = setOpen;
  });

  // ⌘K / Ctrl+K to toggle, Escape to close.
  useEffect(() => {
    if (!modal) return;
    const onKeyDown = (e: KeyboardEvent) => {
      if (hotkey && e.key.toLowerCase() === hotkey.toLowerCase() && (e.metaKey || e.ctrlKey)) {
        e.preventDefault();
        setOpenRef.current(!openRef.current);
      } else if (closeOnEscape && e.key === "Escape" && openRef.current) {
        setOpenRef.current(false);
      }
    };
    window.addEventListener("keydown", onKeyDown);
    return () => window.removeEventListener("keydown", onKeyDown);
  }, [modal, hotkey, closeOnEscape]);

  // Focus the input when the modal opens.
  useEffect(() => {
    if (modal && actualOpen) {
      const id = requestAnimationFrame(() => inputRef.current?.focus());
      return () => cancelAnimationFrame(id);
    }
  }, [modal, actualOpen]);

  const filteredResults = useMemo(() => {
    const q = query.trim().toLowerCase();
    if (!q) return results;
    return results.filter((r) => `${r.name} ${r.meta ?? ""}`.toLowerCase().includes(q));
  }, [query, results]);

  const handleQuery = (value: string) => {
    setQuery(value);
    onQueryChange?.(value);
  };

  const removeTag = (index: number) =>
    setActiveTags((prev) => prev.filter((_, i) => i !== index));

  const panel = (
    <div
      role={modal ? "dialog" : undefined}
      aria-modal={modal ? true : undefined}
      className={cn(
        "mx-auto w-full max-w-xl overflow-hidden rounded-2xl border backdrop-blur-xl",
        "border-black/[0.07] bg-white/85 text-neutral-900 shadow-[0_10px_40px_-14px_rgba(0,0,0,0.22)]",
        "dark:border-white/[0.08] dark:bg-neutral-900/85 dark:text-white dark:shadow-[0_18px_50px_-16px_rgba(0,0,0,0.7)]",
        className,
      )}
    >
      {/* Search bar */}
      <div className="flex items-center gap-1 border-b border-black/[0.06] px-4 py-3.5 dark:border-white/[0.06]">
        <MagnifyingGlass className={ICON} />
        <input
          ref={inputRef}
          type="text"
          value={query}
          onChange={(e) => handleQuery(e.target.value)}
          placeholder={placeholder}
          aria-label="Search"
          className="min-w-0 flex-1 bg-transparent px-3 text-sm text-current outline-none placeholder:text-neutral-400 dark:placeholder:text-neutral-500"
        />
        <div className="flex shrink-0 items-center gap-2.5">
          <button type="button" aria-label="Filters" className="text-neutral-400 transition-colors hover:text-neutral-700 dark:text-neutral-500 dark:hover:text-neutral-200">
            <SlidersHorizontal className="h-[18px] w-[18px]" />
          </button>
          <kbd className="flex items-center gap-0.5 rounded-md border border-black/[0.06] bg-black/[0.03] px-1.5 py-0.5 font-sans text-[11px] font-medium text-neutral-400 dark:border-white/[0.08] dark:bg-white/[0.06] dark:text-neutral-500">
            <span className="text-[13px] leading-none">⌘</span>
            {modal && hotkey ? hotkey.toUpperCase() : "F"}
          </kbd>
        </div>
      </div>

      {/* Tags */}
      {activeTags.length > 0 ? (
        <div className="border-b border-black/[0.06] px-4 py-3.5 dark:border-white/[0.06]">
          <span className="text-[13px] text-neutral-400 dark:text-neutral-500">I&apos;m looking for...</span>
          <div className="mt-3 flex flex-wrap gap-2">
            {activeTags.map((tag, i) => (
              <span
                key={`${tag.label}-${i}`}
                className="flex items-center gap-1.5 rounded-full bg-black/[0.04] py-1 pl-2.5 pr-2 text-[13px] ring-1 ring-inset ring-black/[0.04] dark:bg-white/[0.06] dark:ring-white/[0.06]"
              >
                {tag.icon}
                <span>{tag.label}</span>
                <button
                  type="button"
                  onClick={() => removeTag(i)}
                  aria-label={`Remove ${tag.label}`}
                  className="text-neutral-400 transition-colors hover:text-neutral-700 dark:text-neutral-500 dark:hover:text-neutral-200"
                >
                  <X className="h-3.5 w-3.5" />
                </button>
              </span>
            ))}
          </div>
        </div>
      ) : null}

      {/* Results */}
      {results.length > 0 ? (
        <div className="border-b border-black/[0.06] dark:border-white/[0.06]">
          <p className="px-4 pt-3.5 pb-2 text-[13px] text-neutral-400 dark:text-neutral-500">
            Last search&nbsp;&nbsp;<span className="text-neutral-600 dark:text-neutral-300">{filteredResults.length}</span>
          </p>
          <ul className="px-1.5 pb-1.5">
            {filteredResults.map((result, i) => (
              <li key={`${result.name}-${i}`}>
                <a
                  href={result.href ?? "#"}
                  onClick={() => onSelectResult?.(result, i)}
                  className="group relative flex items-center rounded-lg px-2.5 py-2 transition-colors hover:bg-black/[0.03] dark:hover:bg-white/[0.04]"
                >
                  {result.avatar ? (
                    // eslint-disable-next-line @next/next/no-img-element
                    <img
                      src={result.avatar}
                      alt=""
                      className="h-6 w-6 shrink-0 rounded-full object-cover ring-1 ring-black/5 dark:ring-white/10"
                    />
                  ) : (
                    <span className="h-6 w-6 shrink-0 rounded-full bg-neutral-300 ring-1 ring-black/5 dark:bg-neutral-600 dark:ring-white/10" />
                  )}
                  <span className="ml-2.5 truncate text-sm">
                    {result.name}
                    {result.meta ? <span className="pl-1.5 text-neutral-400 dark:text-neutral-500">{result.meta}</span> : null}
                  </span>
                  {result.actions && result.actions.length > 0 ? (
                    <span className="ml-auto flex items-center gap-2.5 pl-3 text-neutral-400 opacity-70 transition-opacity group-hover:opacity-100 dark:text-neutral-500">
                      {result.actions.map((action, ai) => (
                        <button
                          key={ai}
                          type="button"
                          aria-label={action.label}
                          onClick={(e) => {
                            e.preventDefault();
                            action.onClick?.();
                          }}
                          className="transition-colors hover:text-neutral-700 dark:hover:text-neutral-200"
                        >
                          {action.icon}
                        </button>
                      ))}
                    </span>
                  ) : null}
                </a>
              </li>
            ))}
          </ul>
        </div>
      ) : null}

      {/* Quick actions */}
      {quickActions.length > 0 ? (
        <div className="border-b border-black/[0.06] px-1.5 py-1.5 dark:border-white/[0.06]">
          <p className="px-2.5 pt-2 pb-1 text-[13px] text-neutral-400 dark:text-neutral-500">Quick actions</p>
          {quickActions.map((action, i) => (
            <button
              key={`${action.label}-${i}`}
              type="button"
              onClick={action.onClick}
              className="relative flex w-full items-center rounded-lg px-2.5 py-2 text-left transition-colors hover:bg-black/[0.03] dark:hover:bg-white/[0.04]"
            >
              <span className="flex h-[30px] w-[30px] shrink-0 items-center justify-center rounded-lg bg-black/[0.04] text-neutral-500 dark:bg-white/[0.06] dark:text-neutral-300">
                {action.icon ?? <Plus className="h-[15px] w-[15px]" />}
              </span>
              <span className="pl-3 text-sm">{action.label}</span>
              {action.shortcut ? (
                <kbd className="ml-auto flex h-[26px] w-[26px] items-center justify-center rounded-md bg-black/[0.04] font-sans text-[13px] text-neutral-500 ring-1 ring-inset ring-black/[0.04] dark:bg-white/[0.06] dark:text-neutral-300 dark:ring-white/[0.06]">
                  {action.shortcut}
                </kbd>
              ) : null}
            </button>
          ))}
        </div>
      ) : null}

      {/* Files */}
      {files.length > 0 ? (
        <div className="px-1.5 py-1.5">
          <p className="px-2.5 pt-2 pb-1 text-[13px] text-neutral-400 dark:text-neutral-500">
            Files&nbsp;&nbsp;<span className="text-neutral-600 dark:text-neutral-300">{files.length}</span>
          </p>
          {files.map((file, i) => (
            <div
              key={`${file.name}-${i}`}
              className="group relative flex items-center rounded-lg px-2.5 py-2 transition-colors hover:bg-black/[0.03] dark:hover:bg-white/[0.04]"
            >
              <span className="flex h-[30px] w-[30px] shrink-0 items-center justify-center rounded-lg bg-black/[0.04] text-neutral-500 dark:bg-white/[0.06] dark:text-neutral-300">
                {file.icon ?? <FileArrowDown className="h-[15px] w-[15px]" />}
              </span>
              <span className="flex items-center gap-1.5 pl-3 text-sm">
                <span>
                  {file.name}
                  {file.ext ? <span className="text-neutral-400 dark:text-neutral-500">{file.ext}</span> : null}
                </span>
                {file.verified ? <Checks className="h-4 w-4 text-emerald-500" /> : null}
              </span>
              <button
                type="button"
                onClick={file.onShare}
                className="ml-auto flex items-center gap-1.5 text-sm text-neutral-400 opacity-80 transition-all hover:text-neutral-700 group-hover:opacity-100 dark:text-neutral-500 dark:hover:text-neutral-200"
              >
                <ShareFat weight="bold" className="h-4 w-4" />
                <span>Share</span>
              </button>
            </div>
          ))}
        </div>
      ) : null}
    </div>
  );

  if (!modal) return panel;

  return (
    <div
      onClick={() => setOpen(false)}
      aria-hidden={!actualOpen}
      className={cn(
        "fixed inset-0 z-50 flex items-start justify-center p-4 pt-[12vh] transition-opacity duration-200",
        actualOpen ? "opacity-100" : "pointer-events-none opacity-0",
        overlayClassName,
      )}
    >
      <div className="absolute inset-0 bg-black/40 backdrop-blur-sm dark:bg-black/60" />
      <div
        onClick={(e) => e.stopPropagation()}
        className={cn(
          "relative z-10 w-full max-w-xl transition-all duration-200 ease-out",
          actualOpen ? "translate-y-0 scale-100 opacity-100" : "-translate-y-2 scale-[0.98] opacity-0",
        )}
      >
        {panel}
      </div>
    </div>
  );
}

export default SearchModal;