"use client";

import { useState } from "react";
import { useCopyFeedback } from "./shared";
import { buildShortHighlightUrl } from "@/lib/text-highlight";
import { createPortal } from "react-dom";
import { X, MessageSquare, ExternalLink } from "lucide-react";
import {
  Drawer,
  DrawerClose,
  DrawerContent,
  DrawerHeader,
  DrawerTitle,
} from "@/components/ui/drawer";

export function ShareModal({
  open,
  onClose,
  selectedText,
  isMobile,
}: {
  open: boolean;
  onClose: () => void;
  selectedText: string;
  isMobile: boolean;
}) {
  const { copied, copy } = useCopyFeedback();
  const [generating, setGenerating] = useState(false);

  async function handleCopyShareLink() {
    if (generating) return;
    setGenerating(true);
    try {
      const url = await buildShortHighlightUrl(selectedText);
      await copy(url);
    } finally {
      setGenerating(false);
    }
  }

  const shareOptions = [
    {
      key: "feed",
      label: "Share to Feed",
      icon: <MessageSquare className="size-4" />,
      description: "Post this quote to your feed",
      onClick: () => {
        // TODO: Implement share to feed
        onClose();
      },
    },
    {
      key: "link",
      label: "Share Link",
      icon: <ExternalLink className="size-4" />,
      description: "Copy a shareable link",
      onClick: handleCopyShareLink,
    },
  ];

  function linkLabel(optKey: string, optLabel: string) {
    if (optKey !== "link") return optLabel;
    if (copied) return "Link Copied!";
    if (generating) return "Generating link…";
    return optLabel;
  }

  if (isMobile) {
    return (
      <Drawer open={open} onOpenChange={(o) => !o && onClose()}>
        <DrawerContent className="bg-black dark:bg-[#1a1a1a] border-white/10">
          <DrawerHeader className="text-left border-b border-white/10 pb-4">
            <DrawerTitle className="text-white">Share</DrawerTitle>
            {selectedText && (
              <p className="text-sm text-white/50 mt-1 line-clamp-2">
                &ldquo;{selectedText.slice(0, 120)}
                {selectedText.length > 120 ? "…" : ""}&rdquo;
              </p>
            )}
          </DrawerHeader>
          <div className="p-4 space-y-1">
            {shareOptions.map((opt) => (
              <button
                key={opt.key}
                onClick={opt.onClick}
                className="flex items-center gap-3 w-full px-3 py-3 rounded-lg text-left hover:bg-white/10 transition-colors"
              >
                <div className="flex items-center justify-center size-9 rounded-lg bg-amber-400/15 text-amber-400">
                  {opt.icon}
                </div>
                <div>
                  <p className="text-sm font-medium text-white/90">
                    {linkLabel(opt.key, opt.label)}
                  </p>
                  <p className="text-xs text-white/50">{opt.description}</p>
                </div>
              </button>
            ))}
          </div>
          <div className="p-4 pt-0">
            <DrawerClose asChild>
              <button className="w-full py-2.5 rounded-lg border border-white/15 text-sm font-medium text-white/60 hover:bg-white/10 transition-colors">
                Cancel
              </button>
            </DrawerClose>
          </div>
        </DrawerContent>
      </Drawer>
    );
  }

  // Desktop modal
  if (!open) return null;

  return createPortal(
    <>
      <div
        className="fixed inset-0 z-100 bg-black/60 animate-in fade-in-0"
        onClick={onClose}
      />
      <div className="fixed left-1/2 top-1/2 z-101 w-full max-w-sm -translate-x-1/2 -translate-y-1/2 rounded-xl border border-white/10 bg-black shadow-2xl animate-in fade-in-0 zoom-in-95 dark:bg-[#1a1a1a] dark:border-white/15">
        <div className="flex items-center justify-between px-5 py-4 border-b border-white/10">
          <h2 className="text-lg font-semibold text-white">Share</h2>
          <button
            onClick={onClose}
            className="flex items-center justify-center size-8 rounded-lg text-white/50 hover:bg-white/10 hover:text-white transition-colors"
          >
            <X className="size-4" />
          </button>
        </div>
        {selectedText && (
          <div className="px-5 py-3 border-b border-white/10">
            <p className="text-sm text-white/50 line-clamp-2">
              &ldquo;{selectedText.slice(0, 120)}
              {selectedText.length > 120 ? "…" : ""}&rdquo;
            </p>
          </div>
        )}
        <div className="p-3 space-y-1">
          {shareOptions.map((opt) => (
            <button
              key={opt.key}
              onClick={opt.onClick}
              className="flex items-center gap-3 w-full px-3 py-3 rounded-lg text-left hover:bg-white/10 transition-colors"
            >
              <div className="flex items-center justify-center size-9 rounded-lg bg-amber-400/15 text-amber-400">
                {opt.icon}
              </div>
              <div>
                <p className="text-sm font-medium text-white/90">
                  {linkLabel(opt.key, opt.label)}
                </p>
                <p className="text-xs text-white/50">{opt.description}</p>
              </div>
            </button>
          ))}
        </div>
      </div>
    </>,
    document.body,
  );
}