/**
 * MemoryCard — Expandable card showing memory content + metadata
 */

import { useState } from 'react';
import type { ScoredMemory } from '../api/client';
import TypeBadge from './TypeBadge';
import ScoreBar from './ScoreBar';

interface MemoryCardProps {
  scored: ScoredMemory;
  onForget?: (memoryId: string) => void;
}

export default function MemoryCard({ scored, onForget }: MemoryCardProps) {
  const [expanded, setExpanded] = useState(false);
  const { memory, score, cosine_similarity } = scored;

  const timeAgo = formatTimeAgo(memory.created_at);

  return (
    <div
      className="glass-card animate-fade-in-up"
      style={{
        padding: '16px',
        cursor: 'pointer',
        transition: 'all 0.3s ease',
      }}
      onClick={() => setExpanded(!expanded)}
    >
      {/* Header */}
      <div
        style={{
          display: 'flex',
          alignItems: 'center',
          justifyContent: 'space-between',
          marginBottom: '8px',
        }}
      >
        <TypeBadge type={memory.memory_type} size="sm" />
        <span style={{ fontSize: '12px', color: 'var(--color-text-muted)' }}>
          {timeAgo}
        </span>
      </div>

      {/* Content */}
      <p
        style={{
          fontSize: '14px',
          color: 'var(--color-text-primary)',
          lineHeight: 1.6,
          marginBottom: '12px',
          overflow: 'hidden',
          textOverflow: 'ellipsis',
          display: '-webkit-box',
          WebkitLineClamp: expanded ? 999 : 3,
          WebkitBoxOrient: 'vertical',
        }}
      >
        {memory.content}
      </p>

      {/* Score bars */}
      <div style={{ display: 'flex', flexDirection: 'column', gap: '4px' }}>
        <ScoreBar score={score} label="Score" color="#6366f1" />
        <ScoreBar score={cosine_similarity} label="Cosine" color="#22c55e" />
        <ScoreBar score={memory.importance} label="Import." color="#f59e0b" />
      </div>

      {/* Expanded metadata */}
      {expanded && (
        <div
          style={{
            marginTop: '12px',
            padding: '12px',
            borderRadius: '8px',
            background: 'var(--color-surface)',
            border: '1px solid var(--color-border)',
            fontSize: '12px',
            fontFamily: 'monospace',
          }}
        >
          <pre
            style={{
              color: 'var(--color-text-secondary)',
              whiteSpace: 'pre-wrap',
              wordBreak: 'break-all',
            }}
          >
            {JSON.stringify(memory.metadata, null, 2)}
          </pre>
          <div
            style={{
              marginTop: '8px',
              display: 'flex',
              gap: '12px',
              color: 'var(--color-text-muted)',
            }}
          >
            <span>Accesses: {memory.access_count}</span>
            <span>Recency: {memory.recency_score.toFixed(3)}</span>
            <span>ID: {memory.id.slice(0, 8)}…</span>
          </div>
          {onForget && (
            <button
              onClick={(e) => {
                e.stopPropagation();
                onForget(memory.id);
              }}
              style={{
                marginTop: '8px',
                padding: '6px 16px',
                borderRadius: '8px',
                border: '1px solid var(--color-danger)',
                background: 'transparent',
                color: 'var(--color-danger)',
                fontSize: '12px',
                fontWeight: 600,
                cursor: 'pointer',
                transition: 'all 0.2s',
              }}
              onMouseEnter={(e) => {
                e.currentTarget.style.background = 'rgba(239, 68, 68, 0.1)';
              }}
              onMouseLeave={(e) => {
                e.currentTarget.style.background = 'transparent';
              }}
            >
              🗑 Forget Memory
            </button>
          )}
        </div>
      )}
    </div>
  );
}

function formatTimeAgo(dateStr: string): string {
  const date = new Date(dateStr);
  const now = new Date();
  const diffMs = now.getTime() - date.getTime();
  const diffMin = Math.floor(diffMs / 60000);
  if (diffMin < 1) return 'just now';
  if (diffMin < 60) return `${diffMin}m ago`;
  const diffHr = Math.floor(diffMin / 60);
  if (diffHr < 24) return `${diffHr}h ago`;
  const diffDays = Math.floor(diffHr / 24);
  return `${diffDays}d ago`;
}