cloudsolutions-atoms/lib/views/widgets/images/multi_image_picker.dart

import 'dart:io';

import 'package:file_picker/file_picker.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:image_picker/image_picker.dart';
import 'package:test_sa/extensions/context_extension.dart';
import 'package:test_sa/extensions/int_extensions.dart';
import 'package:test_sa/extensions/text_extensions.dart';
import 'package:test_sa/extensions/widget_extensions.dart';

import '../../../new_views/common_widgets/app_dashed_button.dart';
import 'multi_image_picker_item.dart';

class MultiFilesPicker extends StatefulWidget {
  final String label;
  final bool error;
  final List<File> files;
  final bool enabled, onlyImages;
  final Function(List<File>) onChange;
  final bool showAsGrid;

  const MultiFilesPicker({Key key, this.files, this.label, this.error = false, this.enabled = true, this.onlyImages = false, this.onChange,this.showAsGrid=false}) : super(key: key);

  @override
  State<MultiFilesPicker> createState() => _MultiFilesPickerState();
}

class _MultiFilesPickerState extends State<MultiFilesPicker> {
  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        AppDashedButton(title: widget.label, onPressed: (widget.enabled == false) ? () {} : widget.showAsGrid ? showFileSourceSheet:onFilePicker),
        16.height,
        if (widget.files?.isNotEmpty ?? false)
          Wrap(
            spacing: 8.toScreenWidth,
            children: List.generate(
              widget.files.length,
              (index) {
                File image = widget.files[index];
                return MultiFilesPickerItem(
                  file: image,
                  enabled: widget.enabled,
                  onRemoveTap: (image) {
                    if (!widget.enabled) {
                      return;
                    }
                    widget.files.remove(image);
                    if (widget.onChange != null) {
                      widget.onChange(widget.files);
                    }
                    setState(() {});
                  },
                );
              },
            ),
          ),
      ],
    );
  }

  fromFilePicker() async {
    FilePickerResult result = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowMultiple: true,
      allowedExtensions: widget.onlyImages ? ['jpg', 'jpeg', 'png'] : ['jpg', 'jpeg', 'png', 'pdf', 'doc', 'docx', 'xlsx', 'pptx'],
    );
    if (result != null) {
      for (var path in result.paths) {
        widget.files.add(File(path));
      }
      setState(() {});
    }
  }

  void showFileSourceSheet() async {
    if (widget.files.length >= 5) {
      Fluttertoast.showToast(msg: context.translation.maxImagesNumberIs5);
      return;
    }

    ImageSource source = (await showModalBottomSheet(
      context: context,
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          top: Radius.circular(20),
        ),
      ),
      clipBehavior: Clip.antiAliasWithSaveLayer,
      builder: (BuildContext context) => Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          "Attach File".heading4(context),
          12.height,
          GridView(
            padding: EdgeInsets.all(0),
            shrinkWrap: true,
            physics: const NeverScrollableScrollPhysics(),
            gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 3, childAspectRatio: 1, crossAxisSpacing: 12, mainAxisSpacing: 12),
            children: <Widget>[
              gridItem(Icons.camera_enhance_rounded, context.translation.pickFromCamera).onPress(() => Navigator.of(context).pop(ImageSource.camera)),
              gridItem(Icons.image_rounded, context.translation.pickFromGallery).onPress(() => Navigator.of(context).pop(ImageSource.gallery)),
              gridItem(Icons.file_present_rounded, context.translation.pickFromFiles).onPress(() async {
                await fromFilePicker();
                Navigator.pop(context);
              }),
            ],
          ),
          12.height,
        ],
      ).paddingAll(21),
    )) as ImageSource;

    if (source == null) return;

    final pickedFile = await ImagePicker().pickImage(source: source, imageQuality: 70, maxWidth: 800, maxHeight: 800);

    if (pickedFile != null) {
      File fileImage = File(pickedFile.path);
      if (fileImage != null) {
        widget.files.add(fileImage);
        if (widget.onChange != null) {
          widget.onChange(widget.files);
        }
        setState(() {});
      }
    }
  }

  Widget gridItem(IconData iconData, String title) {
    return Container(
      padding: EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: Color(0xffF1F1F1), width: 1),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Icon(iconData, color: Color(0xff7D859A), size: 36),
          Text(
            title,
            style: TextStyle(fontSize: 12, fontWeight: FontWeight.w500),
          ),
        ],
      ),
    );
  }

  onFilePicker() async {
    if (widget.files.length >= 5) {
      Fluttertoast.showToast(msg: context.translation.maxImagesNumberIs5);
      return;
    }
    ImageSource source = await showDialog(
      context: context,
      builder: (dialogContext) => CupertinoAlertDialog(
        actions: <Widget>[
          TextButton(
            child: Text(context.translation.pickFromCamera),
            onPressed: () {
              Navigator.of(dialogContext).pop(ImageSource.camera);
            },
          ),
          TextButton(
            child: Text(context.translation.pickFromGallery),
            onPressed: () {
              Navigator.of(dialogContext).pop(ImageSource.gallery);
            },
          ),
          TextButton(
            child: Text(context.translation.pickFromFiles),
            onPressed: () async {
              await fromFilePicker();
              Navigator.pop(context);
            },
          ),
        ],
      ),
    );
    if (source == null) return;

    final pickedFile = await ImagePicker().pickImage(source: source, imageQuality: 70, maxWidth: 800, maxHeight: 800);

    if (pickedFile != null) {
      File fileImage = File(pickedFile.path);
      if (fileImage != null) {
        widget.files.add(fileImage);
        if (widget.onChange != null) {
          widget.onChange(widget.files);
        }
        setState(() {});
      }
    }

    setState(() {});
  }
}