tablet-app/lib/Components/cached_custom_resource.dart

import 'dart:io';
import 'dart:typed_data';

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

class CachedCustomResource extends StatelessWidget {
  final ResourceDTO resourceDTO;
  final bool isAuto;
  final bool webView;
  final BoxFit fit;

  CachedCustomResource({
    required this.resourceDTO,
    required this.isAuto,
    required this.webView,
    this.fit = BoxFit.cover,
  });

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

    Color primaryColor = new Color(int.parse(tabletAppContext.configuration!.primaryColor!.split('(0x')[1].split(')')[0], radix: 16));

    if(resourceDTO.type == ResourceType.ImageUrl || resourceDTO.type == ResourceType.VideoUrl)
    {
      // Image Url or Video Url don't care, just get resource
      if(resourceDTO.type == ResourceType.ImageUrl) {
        return CachedNetworkImage(
          imageUrl:  resourceDTO.url!,
          fit: BoxFit.fill,
          progressIndicatorBuilder: (context, url, downloadProgress) =>
              CircularProgressIndicator(value: downloadProgress.progress, color: primaryColor),
          errorWidget: (context, url, error) => Icon(Icons.error),
        );
      } else {
        if(resourceDTO.url == null) {
          return Center(child: Text("Error loading video"));
        } else {
          return VideoViewerYoutube(videoUrl: resourceDTO.url!, isAuto: isAuto, webView: webView);
        }
      }
    } else {
      // Check if exist on local storage, if no, just show it via url
      print("Check local storage in cached custom resource");
      return FutureBuilder<File?>(
        future: _checkIfLocalResourceExists(tabletAppContext),
        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

            switch(resourceDTO.type) {
              case ResourceType.Image :
                return CachedNetworkImage(
                  imageUrl: resourceDTO.url!,
                  fit: fit,
                  placeholder: (context, url) => CircularProgressIndicator(),
                  errorWidget: (context, url, error) => Icon(Icons.error),
                );
              case ResourceType.Video :
                return VideoViewer(file: null, videoUrl: resourceDTO.url!);
              case ResourceType.Audio :
                return AudioPlayerFloatingContainer(file: null, audioBytes: null, resourceURl: resourceDTO.url!, isAuto: isAuto);
              default:
                return Text("Not supported type");
            }
          } else {

            switch(resourceDTO.type) {
              case ResourceType.Image :
                return Image.file(
                  snapshot.data!,
                  fit: fit,
                );
              case ResourceType.Video :
                return VideoViewer(file: snapshot.data!, videoUrl: resourceDTO.url!);
              case ResourceType.Audio :
                return AudioPlayerFloatingContainer(file: snapshot.data!, audioBytes: null, resourceURl: resourceDTO.url!, isAuto: isAuto);
              default:
                return Text("Not supported type");
            }
            // Utilisation de l'image locale

          }
        },
      );
    }
  }

  Future<File?> _checkIfLocalResourceExists(TabletAppContext tabletAppContext) async {
    try {
      Directory? appDocumentsDirectory = Platform.isIOS ? await getApplicationDocumentsDirectory() : 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(resourceDTO.id!))) {
        File file = File(fileList.firstWhere((fileL) => fileL.uri.pathSegments.last.contains(resourceDTO.id!)).path);
        return file;
      }
    } catch(e) {
      print("ERROR _checkIfLocalResourceExists CachedCustomResource");
      print(e);
    }

    return null;
  }

  Future<String> get localPath async {
    Directory? appDocumentsDirectory = Platform.isIOS ? await getApplicationDocumentsDirectory() : await getDownloadsDirectory();
    return appDocumentsDirectory!.path;
  }
}