import { memo } from 'react';
import { Handle, Position, NodeProps } from '@xyflow/react';
import { LineNode as LineNodeData } from '../../types/dialogue';
import { useValidation } from '../../hooks/useValidation';
import { useDialogueStore } from '../../store/dialogueStore';
import { MAIN_CHARACTER } from '../../constants/characters';
import styles from './nodes.module.css';

export const LineNode = memo(({ data, selected }: NodeProps & { data: LineNodeData }) => {
  const { hasError, hasWarning } = useValidation();
  const startId = useDialogueStore(s => {
    const id = s.selectedDialogueId;
    return s.file?.dialogues.find(d => d.id === id)?.start;
  });

  const isMain = data.speaker === MAIN_CHARACTER;
  const isStart = data.id === startId;
  const error = hasError(data.id);
  const warning = !error && hasWarning(data.id);

  const triggers = [
    data.chatBubble && `💬 ${data.chatBubble}`,
    data.questUnlock && `🔓 quest`,
    data.objectiveComplete && `✅ obj`,
    data.objectiveVisible && `👁 obj`,
    data.questFail && `❌ quest`,
    data.questComplete && `🏁 quest`,
    data.luaCallback && `⚡ lua`,
  ].filter(Boolean);

  return (
    <div
      className={[
        styles.node,
        styles.lineNode,
        isMain ? styles.mainChar : styles.otherChar,
        selected ? styles.selected : '',
        error ? styles.hasError : '',
        warning ? styles.hasWarning : '',
      ].join(' ')}
    >
      {isStart && <div className={styles.startBadge}>▶ START</div>}
      <Handle type="target" position={Position.Top} id="target" className={styles.handle} />
      <div className={styles.nodeHeader}>
        <span className={styles.speakerName}>{data.speaker || '(no speaker)'}</span>
        <span className={styles.nodeType}>Line</span>
      </div>
      <div className={styles.nodeId}>{data.id}</div>
      <div className={styles.nodeBody}>
        {data.text ? (
          <span className={styles.textSnippet}>{data.text}</span>
        ) : (
          <span className={styles.emptyText}>(empty)</span>
        )}
      </div>
      {triggers.length > 0 && (
        <div className={styles.triggerRow}>
          {triggers.map((t, i) => (
            <span key={i} className={styles.triggerPill}>{t}</span>
          ))}
        </div>
      )}
      <Handle type="source" position={Position.Bottom} id="source" className={styles.handle} />
    </div>
  );
});