"use client";
import { useState, useRef } from "react";
import Image from "next/image";
import { useServiceManagement } from "@/lib/hooks/useServices";

interface ServiceImageUploadProps {
  serviceSlug: string;
  currentImageUrl?: string;
  onImageUploaded?: (service: any) => void;
}

const ServiceImageUpload: React.FC<ServiceImageUploadProps> = ({
  serviceSlug,
  currentImageUrl,
  onImageUploaded,
}) => {
  const [selectedFile, setSelectedFile] = useState<File | null>(null);
  const [previewUrl, setPreviewUrl] = useState<string | null>(null);
  const [uploading, setUploading] = useState(false);
  const fileInputRef = useRef<HTMLInputElement>(null);
  
  const { uploadServiceImage, loading, error } = useServiceManagement();

  const handleFileSelect = (event: React.ChangeEvent<HTMLInputElement>) => {
    const file = event.target.files?.[0];
    if (file) {
      // Validate file type
      if (!file.type.startsWith('image/')) {
        alert('Please select an image file');
        return;
      }
      
      // Validate file size (5MB limit)
      if (file.size > 5 * 1024 * 1024) {
        alert('File size must be less than 5MB');
        return;
      }
      
      setSelectedFile(file);
      
      // Create preview URL
      const url = URL.createObjectURL(file);
      setPreviewUrl(url);
    }
  };

  const handleUpload = async () => {
    if (!selectedFile) return;
    
    try {
      setUploading(true);
      const updatedService = await uploadServiceImage(serviceSlug, selectedFile);
      
      // Clean up preview URL
      if (previewUrl) {
        URL.revokeObjectURL(previewUrl);
      }
      
      setSelectedFile(null);
      setPreviewUrl(null);
      
      if (fileInputRef.current) {
        fileInputRef.current.value = '';
      }
      
      if (onImageUploaded) {
        onImageUploaded(updatedService);
      }
      
      alert('Image uploaded successfully!');
    } catch (err) {
      console.error('Upload failed:', err);
      alert('Failed to upload image. Please try again.');
    } finally {
      setUploading(false);
    }
  };

  const handleCancel = () => {
    setSelectedFile(null);
    if (previewUrl) {
      URL.revokeObjectURL(previewUrl);
      setPreviewUrl(null);
    }
    if (fileInputRef.current) {
      fileInputRef.current.value = '';
    }
  };

  return (
    <div className="service-image-upload">
      <div className="mb-3">
        <label htmlFor="image-upload" className="form-label">
          Service Image
        </label>
        <input
          ref={fileInputRef}
          type="file"
          id="image-upload"
          className="form-control"
          accept="image/*"
          onChange={handleFileSelect}
          disabled={uploading || loading}
        />
        <div className="form-text">
          Select an image file (JPG, PNG, GIF). Maximum size: 5MB.
        </div>
      </div>

      {/* Current Image */}
      {currentImageUrl && !previewUrl && (
        <div className="mb-3">
          <label className="form-label">Current Image:</label>
          <div className="current-image">
            <Image
              src={currentImageUrl}
              alt="Current service image"
              className="img-thumbnail"
              width={200}
              height={200}
              style={{ maxWidth: '200px', maxHeight: '200px', objectFit: 'cover' }}
            />
          </div>
        </div>
      )}

      {/* Preview */}
      {previewUrl && (
        <div className="mb-3">
          <label className="form-label">Preview:</label>
          <div className="image-preview">
            <Image
              src={previewUrl}
              alt="Preview"
              className="img-thumbnail"
              width={200}
              height={200}
              style={{ maxWidth: '200px', maxHeight: '200px', objectFit: 'cover' }}
            />
          </div>
        </div>
      )}

      {/* Error Display */}
      {error && (
        <div className="alert alert-danger" role="alert">
          {error}
        </div>
      )}

      {/* Action Buttons */}
      {selectedFile && (
        <div className="d-flex gap-2">
          <button
            type="button"
            className="btn btn-primary"
            onClick={handleUpload}
            disabled={uploading || loading}
          >
            {uploading || loading ? (
              <>
                <span className="spinner-border spinner-border-sm me-2" role="status" aria-hidden="true"></span>
                Uploading...
              </>
            ) : (
              'Upload Image'
            )}
          </button>
          <button
            type="button"
            className="btn btn-secondary"
            onClick={handleCancel}
            disabled={uploading || loading}
          >
            Cancel
          </button>
        </div>
      )}
    </div>
  );
};

export default ServiceImageUpload;