library image_pickers;

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:image_picker/image_picker.dart';

enum GalleryMode {
  image,
  video,
}

class UIConfig {
  const UIConfig({this.uiThemeColor});

  final Color? uiThemeColor;
}

class CropConfig {
  const CropConfig({this.enableCrop = true});

  final bool enableCrop;
}

class Media {
  const Media({this.path});

  final String? path;
}

class ImagePickers {
  static final ImagePicker _picker = ImagePicker();

  static Future<List<Media>> pickerPaths({
    UIConfig? uiConfig,
    GalleryMode galleryMode = GalleryMode.image,
    int selectCount = 1,
    bool showCamera = false,
    CropConfig? cropConfig,
  }) async {
    switch (galleryMode) {
      case GalleryMode.video:
        final video = await _picker.pickVideo(source: ImageSource.gallery);
        return video == null ? const [] : [Media(path: video.path)];
      case GalleryMode.image:
        if (selectCount > 1) {
          final images = await _picker.pickMultiImage(limit: selectCount);
          return images.map((file) => Media(path: file.path)).toList();
        }

        final image = await _picker.pickImage(source: ImageSource.gallery);
        return image == null ? const [] : [Media(path: image.path)];
    }
  }

  static Future<void> previewImages(List<String> images, int index) async {
    if (images.isEmpty) {
      return;
    }

    await Get.to(
      () => _ImagePreviewPage(
        images: images,
        initialIndex: index,
      ),
      transition: Transition.fadeIn,
    );
  }
}

class _ImagePreviewPage extends StatefulWidget {
  const _ImagePreviewPage({
    required this.images,
    required this.initialIndex,
  });

  final List<String> images;
  final int initialIndex;

  @override
  State<_ImagePreviewPage> createState() => _ImagePreviewPageState();
}

class _ImagePreviewPageState extends State<_ImagePreviewPage> {
  late final PageController _controller = PageController(initialPage: widget.initialIndex);
  late int _currentIndex = widget.initialIndex;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.black,
      appBar: AppBar(
        backgroundColor: Colors.black,
        elevation: 0,
        title: Text('${_currentIndex + 1}/${widget.images.length}'),
      ),
      body: PageView.builder(
        controller: _controller,
        itemCount: widget.images.length,
        onPageChanged: (value) {
          setState(() {
            _currentIndex = value;
          });
        },
        itemBuilder: (context, index) {
          return InteractiveViewer(
            minScale: 0.8,
            maxScale: 4,
            child: Center(
              child: Image.file(
                File(widget.images[index]),
                fit: BoxFit.contain,
              ),
            ),
          );
        },
      ),
    );
  }
}