"use client";

import * as React from "react";
import {
  FileText,
  LayoutList,
  Search,
  Share2,
  Users,
  Wifi,
  WifiOff,
} from "lucide-react";
import { useEditor, toRichText } from "tldraw";

import { cn } from "@/lib/utils";

export type WhiteboardToolbarProps = {
  className?: string;
  readOnly?: boolean;
  /** When set, shows live collaboration status */
  collab?: {
    isConnected: boolean;
    isSynced: boolean;
  };
};

export function WhiteboardToolbar({ className, collab, readOnly = false }: WhiteboardToolbarProps) {
  const editor = useEditor();
  const [projectPickerOpen, setProjectPickerOpen] = React.useState(false);

  const dropAtViewportCenter = React.useCallback(
    (kind: "task" | "document") => {
      const b = editor.getViewportPageBounds();
      const cx = b.x + b.w / 2 - 120;
      const cy = b.y + b.h / 2 - 80;

      if (kind === "task") {
        editor.createShapes([
          {
            type: "note",
            x: cx,
            y: cy,
            props: {
              color: "violet",
              size: "m",
              richText: toRichText("Task (placeholder)"),
            },
            meta: { whiteboardCard: "task" },
          },
        ]);
      } else {
        editor.createShapes([
          {
            type: "geo",
            x: cx,
            y: cy,
            props: {
              w: 280,
              h: 160,
              geo: "rectangle",
              color: "light-blue",
              fill: "solid",
              richText: toRichText("Document (placeholder)"),
            },
            meta: { whiteboardCard: "document" },
          },
        ]);
      }
    },
    [editor],
  );

  return (
    <>
      <div
        className={cn(
          "pointer-events-auto absolute left-1/2 top-3 z-[300] flex -translate-x-1/2 items-center gap-1.5 rounded-xl border px-2 py-1.5 shadow-lg backdrop-blur-md",
          "border-[hsl(var(--border))] bg-[hsl(var(--card)/0.92)] text-[hsl(var(--foreground))]",
          className,
        )}
      >
        <button
          type="button"
          disabled={readOnly}
          className="inline-flex items-center gap-1.5 rounded-lg px-2.5 py-1.5 text-xs font-medium transition hover:bg-[hsl(var(--accent))] disabled:pointer-events-none disabled:opacity-40"
          onClick={() => dropAtViewportCenter("task")}
        >
          <LayoutList className="size-3.5 text-[hsl(var(--primary))]" />
          Add Task
        </button>
        <button
          type="button"
          disabled={readOnly}
          className="inline-flex items-center gap-1.5 rounded-lg px-2.5 py-1.5 text-xs font-medium transition hover:bg-[hsl(var(--accent))] disabled:pointer-events-none disabled:opacity-40"
          onClick={() => dropAtViewportCenter("document")}
        >
          <FileText className="size-3.5 text-[hsl(var(--secondary-foreground))]" />
          Add Document
        </button>
        <button
          type="button"
          disabled={readOnly}
          className="inline-flex items-center gap-1.5 rounded-lg px-2.5 py-1.5 text-xs font-medium transition hover:bg-[hsl(var(--accent))] disabled:pointer-events-none disabled:opacity-40"
          onClick={() => setProjectPickerOpen(true)}
        >
          <Search className="size-3.5 opacity-80" />
          Add from project…
        </button>

        <div className="mx-1 h-5 w-px bg-[hsl(var(--border))]" />

        <div
          className="flex items-center gap-1.5 px-1 text-xs text-muted-foreground"
          title={
            collab
              ? collab.isConnected
                ? collab.isSynced
                  ? "Synced with collaborators"
                  : "Connecting…"
                : "Offline — reconnect to collaborate"
              : "Local whiteboard"
          }
        >
          <Share2 className="size-3.5 text-[hsl(var(--primary))]" />
          {collab ? (
            <>
              {collab.isConnected ? (
                <Wifi className="size-3.5 text-[hsl(var(--chart-2))]" />
              ) : (
                <WifiOff className="size-3.5 text-amber-500" />
              )}
              <Users className="size-3.5 opacity-80" />
              <span className="max-w-[7rem] truncate font-medium text-foreground">
                {collab.isConnected ? (collab.isSynced ? "Live" : "Syncing") : "Offline"}
              </span>
            </>
          ) : (
            <span className="font-medium text-foreground">Local</span>
          )}
        </div>
      </div>

      {projectPickerOpen ? (
        <div className="pointer-events-auto absolute inset-0 z-[400] flex items-center justify-center bg-black/40 p-4">
          <div
            className="w-full max-w-md rounded-xl border border-[hsl(var(--border))] bg-[hsl(var(--card))] p-4 shadow-xl"
            role="dialog"
            aria-modal
            aria-labelledby="wb-project-picker-title"
          >
            <h2 id="wb-project-picker-title" className="text-sm font-semibold">
              Add from project
            </h2>
            <p className="mt-2 text-xs text-muted-foreground">
              Project search and picker will plug in here. This is a stub for now.
            </p>
            <div className="mt-4 flex justify-end gap-2">
              <button
                type="button"
                className="rounded-lg border border-[hsl(var(--border))] px-3 py-1.5 text-xs font-medium hover:bg-[hsl(var(--accent))]"
                onClick={() => setProjectPickerOpen(false)}
              >
                Close
              </button>
            </div>
          </div>
        </div>
      ) : null}
    </>
  );
}