import React, { useState } from 'react';
import { useSortable } from '@dnd-kit/sortable';
import { CSS } from '@dnd-kit/utilities';
import { motion } from 'framer-motion';
import { GripVertical, Trash2, Edit2, ChevronDown } from 'lucide-react';
import { DialogueItem as DialogueItemType, CharacterOption } from '@/app/model/enums';
import KeywordText from './keyword-text';
import * as Popover from '@radix-ui/react-popover';
import { mockCharacterOptions } from '@/app/model/enums';
import './style/dialogue-item.css';

interface DialogueItemProps {
  dialogue: DialogueItemType;
  onUpdate: (updates: Partial<DialogueItemType>) => void;
  onDelete: () => void;
  onCharacterChange?: (character: CharacterOption) => void;
}

const DialogueItem: React.FC<DialogueItemProps> = ({
  dialogue,
  onUpdate,
  onDelete,
  onCharacterChange,
}) => {
  const [isEditing, setIsEditing] = useState(false);
  const [editText, setEditText] = useState(dialogue.text);
  const [isCharacterSelectOpen, setIsCharacterSelectOpen] = useState(false);

  const {
    attributes,
    listeners,
    setNodeRef,
    transform,
    transition,
    isDragging,
  } = useSortable({ id: dialogue.id });

  const style = {
    transform: CSS.Transform.toString(transform),
    transition,
  };

  const handleSave = () => {
    onUpdate({ text: editText });
    setIsEditing(false);
  };

  const handleCharacterSelect = (character: CharacterOption) => {
    onUpdate({ speaker: character.name });
    onCharacterChange?.(character);
    setIsCharacterSelectOpen(false);
  };

  return (
    <motion.div
      ref={setNodeRef}
      style={style}
      initial={{ opacity: 0, y: 20 }}
      animate={{ opacity: 1, y: 0 }}
      exit={{ opacity: 0, y: -20 }}
      className={`
        group relative flex items-start gap-3 p-3 rounded-lg
        ${isDragging ? 'bg-white/10' : 'hover:bg-white/5'}
        transition-colors duration-200 dialogue-item
      `}
    >
      {/* Drag Handle */}
      <div
        {...attributes}
        {...listeners}
        className="mt-1 cursor-grab active:cursor-grabbing opacity-0 group-hover:opacity-50 hover:opacity-100 transition-opacity"
      >
        <GripVertical className="w-4 h-4" />
      </div>

      {/* Content */}
      <div className="flex-grow">
        {/* Character Selector */}
        <Popover.Root open={isCharacterSelectOpen} onOpenChange={setIsCharacterSelectOpen}>
          <Popover.Trigger asChild>
            <button
              className="mb-1 px-2 py-0.5 text-sm font-medium text-gray-400 rounded
                hover:bg-white/5 flex items-center gap-1 transition-colors group/select"
            >
              {dialogue.speaker}
              <ChevronDown className="w-3 h-3 opacity-50 group-hover/select:opacity-100 transition-opacity" />
            </button>
          </Popover.Trigger>
          <Popover.Portal>
            <Popover.Content
              className="w-[200px] bg-black/90 backdrop-blur-xl rounded-lg border border-white/10
                shadow-xl animate-in fade-in-80 z-50"
              sideOffset={5}
            >
              <div className="p-1">
                {mockCharacterOptions.map((char) => (
                  <button
                    key={char.characterId}
                    onClick={() => handleCharacterSelect(char)}
                    className="w-full px-3 py-2 text-sm text-left text-gray-200 rounded-md
                      hover:bg-white/5 transition-colors flex items-center gap-2"
                  >
                    <img
                      src={char.image}
                      alt={char.name}
                      className="w-6 h-6 rounded-full object-cover"
                    />
                    {char.name}
                  </button>
                ))}
                <div className="h-[1px] bg-white/10 my-1" />
                <button
                  onClick={() => {
                    onUpdate({ speaker: '旁白' });
                    setIsCharacterSelectOpen(false);
                  }}
                  className="w-full px-3 py-2 text-sm text-left text-gray-400 rounded-md
                    hover:bg-white/5 transition-colors"
                >
                  旁白
                </button>
              </div>
            </Popover.Content>
          </Popover.Portal>
        </Popover.Root>
        
        {isEditing ? (
          <div className="flex flex-col gap-2">
            <textarea
              value={editText}
              onChange={(e) => setEditText(e.target.value)}
              className="w-full bg-black/20 rounded-lg p-2 text-sm resize-none focus:outline-none focus:ring-1 focus:ring-blue-500/50"
              rows={3}
              onBlur={() => {
                handleSave();
                setIsEditing(false);
              }}
              autoFocus
            />
          </div>
        ) : (
          <div className="text-sm text-gray-200" onClick={() => setIsEditing(true)}>
            <KeywordText text={dialogue.text} />
          </div>
        )}
      </div>

      {/* Actions */}
      <div className="flex gap-2 opacity-0 transition-opacity opt-btn-group">
        <button
          onClick={() => setIsEditing(true)}
          className="p-1 rounded-md hover:bg-white/10 transition-colors"
        >
          <Edit2 className="w-4 h-4 text-gray-400" />
        </button>
        <button
          onClick={onDelete}
          className="p-1 rounded-md hover:bg-white/10 transition-colors"
        >
          <Trash2 className="w-4 h-4 text-red-400" />
        </button>
      </div>
    </motion.div>
  );
};

export default DialogueItem;