[improvement][settings] only displaying available multi-threaded download clients

CHANGELOG.md

@@ -30,7 +30,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     </p>
 
 - Settings
-    - [axel](https://github.com/axel-download-accelerator/axel) added as an alternative multi-threaded download tool. The tool can be defined through the new field **Multi-threaded download tool** on the settings window **Advanced** tab
+    - [axel](https://github.com/axel-download-accelerator/axel) added as an alternative multi-threaded download tool. The tool can be defined through the new field **Multi-threaded download tool** on the settings window **Advanced** tab (check **Default** for bauh to decide which one to use)
     <p align="center">
         <img src="https://raw.githubusercontent.com/vinifmor/bauh/staging/pictures/releases/0.9.4/mthread_tool.png">
     </p>

bauh/api/abstract/download.py

@@ -1,5 +1,5 @@
 from abc import ABC, abstractmethod
-from typing import Iterable
+from typing import Iterable, List
 
 from bauh.api.abstract.handler import ProcessWatcher
 
@@ -33,3 +33,11 @@ class FileDownloader(ABC):
     @abstractmethod
     def get_supported_multithreaded_clients(self) -> Iterable[str]:
         pass
+
+    @abstractmethod
+    def is_multithreaded_client_available(self, name: str) -> bool:
+        pass
+
+    @abstractmethod
+    def list_available_multithreaded_clients(self) -> List[str]:
+        pass

bauh/view/core/downloader.py

@@ -5,7 +5,7 @@ import time
 import traceback
 from math import floor
 from threading import Thread
-from typing import Iterable
+from typing import Iterable, List
 
 from bauh.api.abstract.download import FileDownloader
 from bauh.api.abstract.handler import ProcessWatcher
@@ -24,7 +24,7 @@ class AdaptableFileDownloader(FileDownloader):
         self.multithread_enabled = multithread_enabled
         self.i18n = i18n
         self.http_client = http_client
-        self.supported_multithread_clients = {'aria2', 'axel'}
+        self.supported_multithread_clients = ['aria2', 'axel']
         self.multithread_client = multithread_client
 
     @staticmethod
@@ -184,22 +184,39 @@ class AdaptableFileDownloader(FileDownloader):
         return success
 
     def is_multithreaded(self) -> bool:
-        return self.multithread_enabled and (self.is_aria2c_available() or self.is_axel_available())
+        return bool(self.get_available_multithreaded_tool())
 
     def get_available_multithreaded_tool(self) -> str:
         if self.multithread_enabled:
-            if self.multithread_client is None:
+            if self.multithread_client is None or self.multithread_client not in self.supported_multithread_clients:
-                if self.is_aria2c_available():
+                for client in self.supported_multithread_clients:
-                    return 'aria2'
+                    if self.is_multithreaded_client_available(client):
-                elif self.is_axel_available():
+                        return client
-                    return 'axel'
+            else:
-            elif (self.multithread_client == 'aria2' or self.multithread_client not in self.get_supported_multithreaded_clients()) and self.is_aria2c_available():
+                possible_clients = {*self.supported_multithread_clients}
-                return 'aria2'
+
-            elif self.is_axel_available():
+                if self.is_multithreaded_client_available(self.multithread_client):
-                return 'axel'
+                    return self.multithread_client
+                else:
+                    possible_clients.remove(self.multithread_client)
+
+                    for client in possible_clients:
+                        if self.is_multithreaded_client_available(client):
+                            return client
 
     def can_work(self) -> bool:
         return self.is_wget_available() or self.is_multithreaded()
 
     def get_supported_multithreaded_clients(self) -> Iterable[str]:
         return self.supported_multithread_clients
+
+    def is_multithreaded_client_available(self, name: str) -> bool:
+        if name == 'aria2':
+            return self.is_aria2c_available()
+        elif name == 'axel':
+            return self.is_axel_available()
+        else:
+            return False
+
+    def list_available_multithreaded_clients(self) -> List[str]:
+        return [c for c in self.supported_multithread_clients if self.is_multithreaded_client_available(c)]

bauh/view/core/settings.py

@@ -121,24 +121,33 @@ class GenericSettingsManager:
                                                    max_width=default_width,
                                                    value=core_config['download']['multithreaded'])
 
-        supported_mthread_clients = self.file_downloader.get_supported_multithreaded_clients()
+        select_mthread_client = self._gen_multithread_client_select(core_config, default_width)
-        mthread_client_opts = [(self.i18n['default'].capitalize(), None, None)]
-        mthread_client_opts.extend(((d, d, None) for d in supported_mthread_clients))
-        current_mthread_client = core_config['download']['multithreaded_client']
-
-        if current_mthread_client not in supported_mthread_clients:
-            current_mthread_client = None
-
-        select_mthread_client = self._gen_select(label=self.i18n['core.config.download.multithreaded_client'],
-                                                 tip=self.i18n['core.config.download.multithreaded_client.tip'],
-                                                 id_="mthread_client",
-                                                 max_width=default_width,
-                                                 opts=mthread_client_opts,
-                                                 value=current_mthread_client)
 
         sub_comps = [FormComponent([select_dmthread, select_mthread_client, select_trim_up, select_dep_check, input_data_exp, input_icon_exp], spaces=False)]
         return TabComponent(self.i18n['core.config.tab.advanced'].capitalize(), PanelComponent(sub_comps), None, 'core.adv')
 
+    def _gen_multithread_client_select(self, core_config: dict, default_width: int) -> SingleSelectComponent:
+        available_mthread_clients = self.file_downloader.list_available_multithreaded_clients()
+        available_mthread_clients.sort()
+
+        default_i18n_key = 'default' if available_mthread_clients else 'core.config.download.multithreaded_client.none'
+        mthread_client_opts = [(self.i18n[default_i18n_key].capitalize(), None, None)]
+
+        for client in available_mthread_clients:
+            mthread_client_opts.append((client, client, None))
+
+        current_mthread_client = core_config['download']['multithreaded_client']
+
+        if current_mthread_client not in available_mthread_clients:
+            current_mthread_client = None
+
+        return self._gen_select(label=self.i18n['core.config.download.multithreaded_client'],
+                                tip=self.i18n['core.config.download.multithreaded_client.tip'],
+                                id_="mthread_client",
+                                max_width=default_width,
+                                opts=mthread_client_opts,
+                                value=current_mthread_client)
+
     def _gen_tray_settings(self, core_config: dict, screen_width: int, screen_height: int) -> TabComponent:
         default_width = floor(0.22 * screen_width)
 

bauh/view/resources/locale/ca

@@ -194,6 +194,7 @@ core.config.download.icons.tip=If the application icons should be downloaded and
 core.config.download.multithreaded=Multithreaded download
 core.config.download.multithreaded.tip=Whether applications, packages and files should be downloaded with a tool that works with threads (faster).
 core.config.download.multithreaded_client=Multi-threaded download tool
+core.config.download.multithreaded_client.none=None available
 core.config.download.multithreaded_client.tip=The download tool that should be used for multi-threaded downloads. It must be installed on the system for this configuration to work.
 core.config.downloads=downloads
 core.config.locale.label=language

bauh/view/resources/locale/de

@@ -193,6 +193,7 @@ core.config.download.icons.tip=Falls aktiviert werden die Anwendungs-Icons in de
 core.config.download.multithreaded=Paralleler Download
 core.config.download.multithreaded.tip=Falls aktiviert werden Downloads parallel (mit mehreren Threads) heruntergeladen.
 core.config.download.multithreaded_client=Multi-threaded download tool
+core.config.download.multithreaded_client.none=None available
 core.config.download.multithreaded_client.tip=The download tool that should be used for multi-threaded downloads. It must be installed on the system for this configuration to work.
 core.config.downloads=Downloads
 core.config.locale.label=Sprache

bauh/view/resources/locale/en

@@ -193,6 +193,7 @@ core.config.download.icons=Download icons
 core.config.download.multithreaded=Multi-threaded download
 core.config.download.multithreaded.tip=Whether applications, packages and files should be downloaded with a tool that works with threads (faster).
 core.config.download.multithreaded_client=Multi-threaded download tool
+core.config.download.multithreaded_client.none=None available
 core.config.download.multithreaded_client.tip=The download tool that should be used for multi-threaded downloads. It must be installed on the system for this configuration to work.
 core.config.downloads=downloads
 core.config.locale.label=language

bauh/view/resources/locale/es

@@ -194,6 +194,7 @@ core.config.download.icons.tip=Si los íconos de las aplicaciones se deben desca
 core.config.download.multithreaded=Descarga segmentada
 core.config.download.multithreaded.tip=Si las aplicaciones, paquetes y archivos deben descargarse con una herramienta que usa segmentación / threads (más rápido).
 core.config.download.multithreaded_client=Herramienta para descarga segmentada
+core.config.download.multithreaded_client.none=Ninguna disponible
 core.config.download.multithreaded_client.tip=La herramienta que debe usarse para descargas segmentadas. Ella debe estar instalada en el sistema para que esta configuración funcione.
 core.config.downloads=downloads
 core.config.locale.label=idioma

bauh/view/resources/locale/it

@@ -193,6 +193,7 @@ core.config.download.icons.tip=If the application icons should be downloaded and
 core.config.download.multithreaded=Multithreaded download
 core.config.download.multithreaded.tip=Whether applications, packages and files should be downloaded with a tool that works with threads (faster).
 core.config.download.multithreaded_client=Multi-threaded download tool
+core.config.download.multithreaded_client.none=None available
 core.config.download.multithreaded_client.tip=The download tool that should be used for multi-threaded downloads. It must be installed on the system for this configuration to work.
 core.config.downloads=downloads
 core.config.locale.label=language

bauh/view/resources/locale/pt

@@ -193,6 +193,7 @@ core.config.download.icons=Baixar ícones
 core.config.download.multithreaded.tip=Se os aplicativos, pacotes e arquivos devem ser baixados através de uma ferramenta que trabalha com segmentação / threads (mais rápido).
 core.config.download.multithreaded=Download segmentado
 core.config.download.multithreaded_client=Ferramenta para download segmentado
+core.config.download.multithreaded_client.none=Nenhuma disponível
 core.config.download.multithreaded_client.tip=A ferramenta que deve ser utilizada para downloads segmentados. Ela precisa estar instalada no sistema para que essa configuração funcione.
 core.config.downloads=downloads
 core.config.locale.label=idioma

bauh/view/resources/locale/ru

@@ -193,6 +193,7 @@ core.config.download.icons.tip=Загружать иконки приложен
 core.config.download.multithreaded=Многопоточная загрузка
 core.config.download.multithreaded.tip=Следует ли загружать приложения, пакеты и файлы с помощью инструмента, который работает с потоками (быстрее).
 core.config.download.multithreaded_client=Multi-threaded download tool
+core.config.download.multithreaded_client.none=None available
 core.config.download.multithreaded_client.tip=The download tool that should be used for multi-threaded downloads. It must be installed on the system for this configuration to work.
 core.config.downloads=downloads
 core.config.locale.label=Язык

bauh/view/resources/locale/tr

@@ -193,6 +193,7 @@ core.config.download.icons=Simgeleri indir
 core.config.download.multithreaded.tip=Uygulamaların, paketlerin ve dosyaların iş parçacıklarıyla (daha hızlı) çalışan bir araçla indirilip indirilmeyeceği.
 core.config.download.multithreaded=Çoklu parçalı indirme
 core.config.download.multithreaded_client=Multi-threaded download tool
+core.config.download.multithreaded_client.none=None available
 core.config.download.multithreaded_client.tip=The download tool that should be used for multi-threaded downloads. It must be installed on the system for this configuration to work.
 core.config.downloads=indirilenler
 core.config.locale.label=dil