import React from 'react';
import { EmailBlock } from './types';
import { __ } from '@/lib/i18n';
import { parseMarkdownBasics } from '@/lib/markdown-utils';

interface BlockRendererProps {
  block: EmailBlock;
  isEditing: boolean;
  onEdit: () => void;
  onDelete: () => void;
  onMoveUp: () => void;
  onMoveDown: () => void;
  isFirst: boolean;
  isLast: boolean;
}

export function BlockRenderer({
  block,
  isEditing,
  onEdit,
  onDelete,
  onMoveUp,
  onMoveDown,
  isFirst,
  isLast
}: BlockRendererProps) {

  // Prevent navigation in builder
  const handleClick = (e: React.MouseEvent) => {
    const target = e.target as HTMLElement;
    if (
      target.tagName === 'A' ||
      target.tagName === 'BUTTON' ||
      target.closest('a') ||
      target.closest('button') ||
      target.classList.contains('button') ||
      target.classList.contains('button-outline') ||
      target.closest('.button') ||
      target.closest('.button-outline')
    ) {
      e.preventDefault();
      e.stopPropagation();
    }
  };

  const renderBlockContent = () => {
    switch (block.type) {
      case 'card':
        const cardStyles: { [key: string]: React.CSSProperties } = {
          default: {
            background: '#ffffff',
            borderRadius: '8px',
            padding: '32px 40px',
            marginBottom: '24px'
          },
          success: {
            background: '#e8f5e9',
            border: '1px solid #4caf50',
            borderRadius: '8px',
            padding: '32px 40px',
            marginBottom: '24px'
          },
          info: {
            background: '#f0f7ff',
            border: '1px solid #0071e3',
            borderRadius: '8px',
            padding: '32px 40px',
            marginBottom: '24px'
          },
          warning: {
            background: '#fff8e1',
            border: '1px solid #ff9800',
            borderRadius: '8px',
            padding: '32px 40px',
            marginBottom: '24px'
          },
          hero: {
            background: 'linear-gradient(135deg, var(--wn-gradient-start, #667eea) 0%, var(--wn-gradient-end, #764ba2) 100%)',
            color: '#fff',
            borderRadius: '8px',
            padding: '32px 40px',
            marginBottom: '24px'
          }
        };

        // Convert markdown to HTML for visual rendering
        const htmlContent = parseMarkdownBasics(block.content);

        return (
          <div style={cardStyles[block.cardType]}>
            <div
              className="prose prose-sm max-w-none [&_h1]:text-3xl [&_h1]:font-bold [&_h1]:mt-0 [&_h1]:mb-4 [&_h2]:text-2xl [&_h2]:font-bold [&_h2]:mt-0 [&_h2]:mb-3 [&_h3]:text-xl [&_h3]:font-bold [&_h3]:mt-0 [&_h3]:mb-2 [&_h4]:text-lg [&_h4]:font-bold [&_h4]:mt-0 [&_h4]:mb-2 [&_.button]:inline-block [&_.button]:bg-purple-600 [&_.button]:text-white [&_.button]:px-7 [&_.button]:py-3.5 [&_.button]:rounded-md [&_.button]:no-underline [&_.button]:font-semibold [&_.button-outline]:inline-block [&_.button-outline]:bg-transparent [&_.button-outline]:text-purple-600 [&_.button-outline]:px-6 [&_.button-outline]:py-3 [&_.button-outline]:rounded-md [&_.button-outline]:no-underline [&_.button-outline]:font-semibold [&_.button-outline]:border-2 [&_.button-outline]:border-purple-600"
              style={block.cardType === 'hero' ? { color: '#fff' } : {}}
              dangerouslySetInnerHTML={{ __html: htmlContent }}
            />
          </div>
        );

      case 'button': {
        const buttonStyle: React.CSSProperties = block.style === 'solid'
          ? {
            display: 'inline-block',
            background: 'var(--wn-primary, #7f54b3)',
            color: '#fff',
            padding: '14px 28px',
            borderRadius: '6px',
            textDecoration: 'none',
            fontWeight: 600,
          }
          : {
            display: 'inline-block',
            background: 'transparent',
            color: 'var(--wn-secondary, #7f54b3)',
            padding: '12px 26px',
            border: '2px solid var(--wn-secondary, #7f54b3)',
            borderRadius: '6px',
            textDecoration: 'none',
            fontWeight: 600,
          };

        const containerStyle: React.CSSProperties = {
          textAlign: block.align || 'center',
        };

        if (block.widthMode === 'full') {
          buttonStyle.display = 'block';
          buttonStyle.width = '100%';
          buttonStyle.textAlign = 'center';
        } else if (block.widthMode === 'custom' && block.customMaxWidth) {
          buttonStyle.maxWidth = `${block.customMaxWidth}px`;
          buttonStyle.width = '100%';
        }

        return (
          <div style={containerStyle}>
            <a href={block.link} style={buttonStyle}>
              {block.text}
            </a>
          </div>
        );
      }

      case 'image': {
        const containerStyle: React.CSSProperties = {
          textAlign: block.align,
          marginBottom: 24,
        };

        const imgStyle: React.CSSProperties = {
          display: 'inline-block',
        };

        if (block.widthMode === 'full') {
          imgStyle.display = 'block';
          imgStyle.width = '100%';
          imgStyle.height = 'auto';
        } else if (block.widthMode === 'custom' && block.customMaxWidth) {
          imgStyle.maxWidth = `${block.customMaxWidth}px`;
          imgStyle.width = '100%';
          imgStyle.height = 'auto';
        }

        return (
          <div style={containerStyle}>
            <img src={block.src} alt={block.alt || ''} style={imgStyle} />
          </div>
        );
      }

      case 'divider':
        return <hr className="border-t border-gray-300 my-4" />;

      case 'spacer':
        return <div style={{ height: `${block.height}px` }} />;

      default:
        return null;
    }
  };

  return (
    <div className="group relative" onClick={handleClick}>
      {/* Block Content */}
      <div className={`transition-all ${isEditing ? 'ring-2 ring-purple-500 ring-offset-2' : ''}`}>
        {renderBlockContent()}
      </div>

      {/* Hover Controls */}
      <div className="absolute -right-2 top-1/2 -translate-y-1/2 opacity-0 group-hover:opacity-100 transition-opacity flex flex-col gap-1 bg-white rounded-md shadow-lg border p-1">
        {!isFirst && (
          <button
            onClick={onMoveUp}
            className="p-1 hover:bg-gray-100 rounded text-gray-600 text-xs"
            title={__('Move up')}
          >
            ↑
          </button>
        )}
        {!isLast && (
          <button
            onClick={onMoveDown}
            className="p-1 hover:bg-gray-100 rounded text-gray-600 text-xs"
            title={__('Move down')}
          >
            ↓
          </button>
        )}
        {/* Only show edit button for card, button, and image blocks */}
        {(block.type === 'card' || block.type === 'button' || block.type === 'image') && (
          <button
            onClick={onEdit}
            className="p-1 hover:bg-gray-100 rounded text-blue-600 text-xs"
            title={__('Edit')}
          >
            ✎
          </button>
        )}
        <button
          onClick={onDelete}
          className="p-1 hover:bg-gray-100 rounded text-red-600 text-xs"
          title={__('Delete')}
        >
          ×
        </button>
      </div>
    </div>
  );
}
