tablet-app/lib/Components/loading_common.dart

import 'dart:io';

import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/material.dart';
import 'package:manager_api/api.dart';
import 'package:path_provider/path_provider.dart';
import 'package:provider/provider.dart';
import 'package:tablet_app/Components/cached_custom_resource.dart';
import 'package:tablet_app/Models/tabletContext.dart';
import 'package:tablet_app/app_context.dart';
import 'package:tablet_app/constants.dart';

class LoadingCommon extends StatefulWidget {
  const LoadingCommon({Key? key}) : super(key: key);

  @override
  State<LoadingCommon> createState() => _LoadingCommonState();
}

class _LoadingCommonState extends State<LoadingCommon> with TickerProviderStateMixin {
  AnimationController? _controller;

  @override
  void initState() {
    _controller = AnimationController(
      duration: const Duration(milliseconds: 5000),
      vsync: this,
    )..repeat();
    super.initState();
  }

  @override
  void dispose() {
    _controller!.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final appContext = Provider.of<AppContext>(context);
    TabletAppContext tabletAppContext = appContext.getContext();

    Size size = MediaQuery.of(context).size;
    _controller!.forward(from: 0.0);
    _controller!.addListener(() {
      if (_controller!.isCompleted) {
        _controller!.reverse();
      }
      if(_controller!.isDismissed){
        _controller!.forward();
      }
    });

    var primaryColor = tabletAppContext.configuration != null ? tabletAppContext.configuration!.primaryColor != null ? new Color(int.parse(tabletAppContext.configuration!.primaryColor!.split('(0x')[1].split(')')[0], radix: 16)) : kTestSecondColor : kTestSecondColor;
    return Center(
      child: SizedBox(
        height: size.height * 0.1,
        child: RotationTransition(
          turns: Tween(begin: 0.0, end: 3.0).animate(_controller!),
          child: tabletAppContext.configuration != null && tabletAppContext.configuration!.loaderImageUrl != null ?
            //Image.network(tabletAppContext.configuration!.loaderImageUrl!)
            // TODO Replace by CustomCacheResource..
            FutureBuilder<File?>(
              future: _checkIfLocalResourceExists(tabletAppContext, tabletAppContext.configuration!.loaderImageId!),
              builder: (context, snapshot) {
                if (snapshot.connectionState == ConnectionState.waiting) {
                  // Loader ou indicateur de chargement pendant la vérification
                  return CircularProgressIndicator();
                } else if (snapshot.hasError || snapshot.data == null) {
                  // Si la ressource locale n'existe pas ou s'il y a une erreur
                  print("not a local loader succck");
                  return CachedNetworkImage(
                    imageUrl:  tabletAppContext.configuration!.loaderImageUrl!,
                    progressIndicatorBuilder: (context, url, downloadProgress) =>
                        CircularProgressIndicator(value: downloadProgress.progress, color: primaryColor),
                    errorWidget: (context, url, error) => Icon(Icons.error),
                  );
                } else {
                  print("Its a local loaaader yeah");
                  return Image.file(
                    snapshot.data!,
                  );
                }
              },
            )
            : Icon(Icons.museum_outlined, color: kTestSecondColor, size: size.height*0.1),
        ),
      ),
    );
  }
}

Future<File?> _checkIfLocalResourceExists(TabletAppContext tabletAppContext, String resourceId) async {
  try {
    Directory? appDocumentsDirectory = Platform.isIOS ? await getApplicationSupportDirectory() : await getDownloadsDirectory();
    String localPath = appDocumentsDirectory!.path;
    Directory configurationDirectory = Directory('$localPath/${tabletAppContext.configuration!.id}');
    List<FileSystemEntity> fileList = configurationDirectory.listSync();

    if(fileList.any((fileL) => fileL.uri.pathSegments.last.contains(resourceId))) {
      File file = File(fileList.firstWhere((fileL) => fileL.uri.pathSegments.last.contains(resourceId)).path);
      return file;
    }
  } catch(e) {
    print("ERROR _checkIfLocalResourceExists CachedCustomResource");
    print(e);
  }

  return null;
}