pdf/frontend/src/components/Toolbar.tsx

import React from 'react';

interface ToolbarProps {
  zoom: number;
  onZoomChange: (zoom: number) => void;
  rotation: number;
  onRotationChange: (rot: number) => void;
  activeTool: string;
  onActiveToolChange: (tool: string) => void;
  currentPage: number;
  totalPages: number;
  onUploadStart?: (file: File) => void;
  backendHealthy: boolean | null;
  wasmEngineInfo?: string;
  wasmHasSkia?: boolean;
}

export const Toolbar: React.FC<ToolbarProps> = ({
  zoom,
  onZoomChange,
  rotation,
  onRotationChange,
  activeTool,
  onActiveToolChange,
  currentPage,
  totalPages,
  onUploadStart,
  backendHealthy,
  wasmEngineInfo,
  wasmHasSkia,
}) => {

  const handleZoomPercentSelect = (e: React.ChangeEvent<HTMLSelectElement>) => {
    const val = parseFloat(e.target.value);
    onZoomChange(val);
  };

  const handleFileUpload = (e: React.ChangeEvent<HTMLInputElement>) => {
    const file = e.target.files?.[0];
    if (file && onUploadStart) {
      onUploadStart(file);
    }
  };

  return (
    <div className="toolbar">
      {/* Logo & Health */}
      <div className="toolbar-section">
        <div className="logo-container">
          <div className="logo-badge">DQ</div>
          <span className="logo-text">
            DocQube<span className="logo-sub">PDF</span>
          </span>
        </div>

        <div className={`health-badge status-${backendHealthy === null ? 'checking' : backendHealthy ? 'healthy' : 'unhealthy'}`}>
          <span className="health-dot" />
          {backendHealthy === null
            ? 'Checking Gateway...'
            : backendHealthy
            ? 'Gateway Connected'
            : 'Gateway Offline'}
        </div>
      </div>

      {/* Center Tools (Zoom, Rotate, Navigate) */}
      <div className="toolbar-center">
        <div className="page-indicator">
          <span>Page</span>
          <span className="page-current">{currentPage + 1}</span>
          <span className="page-separator">/</span>
          <span>{totalPages}</span>
        </div>

        <div className="divider-vertical" />

        <div className="zoom-controls">
          <button
            onClick={() => onZoomChange(Math.max(0.5, zoom - 0.25))}
            className="btn-icon"
            title="Zoom Out"
          >
            <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2.5}>
              <path strokeLinecap="round" strokeLinejoin="round" d="M20 12H4" />
            </svg>
          </button>
          
          <select
            value={zoom}
            onChange={handleZoomPercentSelect}
            className="zoom-select"
          >
            <option value="0.5">50%</option>
            <option value="0.75">75%</option>
            <option value="1.0">100%</option>
            <option value="1.25">125%</option>
            <option value="1.5">150%</option>
            <option value="2.0">200%</option>
          </select>

          <button
            onClick={() => onZoomChange(Math.min(3.0, zoom + 0.25))}
            className="btn-icon"
            title="Zoom In"
          >
            <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2.5}>
              <path strokeLinecap="round" strokeLinejoin="round" d="M12 4v16m8-8H4" />
            </svg>
          </button>
        </div>

        <div className="divider-vertical" />

        <button
          onClick={() => onRotationChange((rotation + 90) % 360)}
          className="btn-icon"
          title="Rotate Clockwise"
        >
          <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
            <path strokeLinecap="round" strokeLinejoin="round" d="M4 4v5h.582m15.356 2A8.001 8.001 0 1121.21 7.89M9 11l3-3 3 3m-3-3v12" />
          </svg>
        </button>
      </div>

      {/* Right Tools (Active tool highlights, Upload) */}
      <div className="toolbar-section gap-3">
        <div className="tool-selector">
          <button
            onClick={() => onActiveToolChange('select')}
            className={`tool-btn ${activeTool === 'select' ? 'active' : ''}`}
            title="Select Text"
          >
            Select
          </button>
          
          <button
            onClick={() => onActiveToolChange('highlight')}
            className={`tool-btn highlight ${activeTool === 'highlight' ? 'active' : ''}`}
            title="Highlight Ink"
          >
            Highlight
          </button>

          <button
            onClick={() => onActiveToolChange('signature')}
            className={`tool-btn signature ${activeTool === 'signature' ? 'active' : ''}`}
            title="Place Digital Signature"
          >
            Signature
          </button>
        </div>

        <label className="upload-btn">
          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2.5}>
            <path strokeLinecap="round" strokeLinejoin="round" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-8l-4-4m0 0L8 8m4-4v12" />
          </svg>
          Upload PDF
          <input
            type="file"
            accept=".pdf"
            onChange={handleFileUpload}
            className="hidden-file-input"
          />
        </label>
      </div>
    </div>
  );
};