mobile-app/lib/presentation/screens/actions/util_action.dart

import 'dart:io';

import 'package:farm_tpf/custom_model/Media.dart';
import 'package:farm_tpf/utils/const_common.dart';
import 'package:flutter_cache_manager/flutter_cache_manager.dart';
import 'package:flutter_image_compress/flutter_image_compress.dart';
import 'package:mime/mime.dart';
import 'package:path_provider/path_provider.dart' as path_provider;
import 'package:path/path.dart' as path;

class UtilAction {
  static Future<List<Media>> cacheFiles(String existedMedias) async {
    var medias = List<Media>();
    var mediaPaths = existedMedias.split(";");
    for (int i = 0; i < mediaPaths.length; i++) {
      var tempFile = await DefaultCacheManager()
          .getSingleFile(ConstCommon.baseImageUrl + mediaPaths[i]);
      print(tempFile.path);
      var isVideo = lookupMimeType(tempFile.path) == "video/mp4";
      print("file type: " + lookupMimeType(tempFile.path));
      Media media = Media()
        ..pathFile = tempFile.path
        ..isVideo = isVideo;
      medias.add(media);
    }
    return medias;
  }

  static List<Media> convertFilePathToMedia(String existedMedias) {
    var medias = List<Media>();
    var mediaPaths = existedMedias.split(";");
    for (int i = 0; i < mediaPaths.length; i++) {
      var filePath = ConstCommon.baseImageUrl + mediaPaths[i];
      var isVideo = lookupMimeType(filePath) == "video/mp4";
      Media media = Media()
        ..pathFile = filePath
        ..isVideo = isVideo
        ..isServerFile = true;
      medias.add(media);
    }
    return medias;
  }

  static num convertUnit({num inputValue, String oldUnit, String newUnit}) {
    num result = inputValue;
    if (newUnit.isEmpty || newUnit == oldUnit) {
      return result;
    }
    if (oldUnit == "kg" || oldUnit == "l") {
      result = result * 1000;
    } else if (oldUnit == "g" || oldUnit == "ml") {
      result = result / 1000;
    } else if (oldUnit == "m") {
      if (newUnit == "cm") {
        result = result * 100;
      } else if (newUnit == "mm") {
        result = result * 1000;
      }
    } else if (oldUnit == "cm") {
      if (newUnit == "m") {
        result = result / 100;
      } else if (newUnit == "mm") {
        result = result * 10;
      }
    } else if (oldUnit == "mm") {
      if (newUnit == "m") {
        result = result / 1000;
      } else if (newUnit == "cm") {
        result = result / 10;
      }
    }
    return result;
  }

  static Future<File> compressImage(File file) async {
    final dir = await path_provider.getTemporaryDirectory();
    final fileName = path.basenameWithoutExtension(file.path);
    final targetPath = dir.absolute.path + "/$fileName.jpg";
    print('before: ' + file.lengthSync().toString());
    final imgFile = await compressAndGetFile(file, targetPath);
    print('after: ' + imgFile.lengthSync().toString());
    return imgFile;
  }

  static Future<File> compressAndGetFile(File file, String targetPath) async {
    try {
      final result = await FlutterImageCompress.compressAndGetFile(
          file.absolute.path, targetPath,
          quality: 50, minWidth: 1280, minHeight: 720);
      return result;
    } on UnsupportedError catch (e) {
      return Future.value(file);
    }
  }
}