Added support for all Deepl-supported languages

constants.py

@@ -1,3 +1,4 @@
 TRANSLATE_API_ENDPOINT_URL = "https://api-free.deepl.com/v2/translate"
 USAGE_API_ENDPOINT_URL = "https://api-free.deepl.com/v2/usage"
+LANGUAGES_API_ENDPOINT_URL = "https://api-free.deepl.com/v2/languages"
 API_ACCESS_KEY = ""

main.py

@@ -7,7 +7,19 @@ import constants
 
 def main():
     # Impl
-    print("[INFO][PREFLIGHT] Initializing translator...")
+    print("[INFO][PREFLIGHT] Initializing translator...", end="")
+
+    availableLanguages = list()
+    params = {
+        "auth_key": constants.API_ACCESS_KEY,
+        "type": "target"
+    }
+    availableLanguagesRequest = requests.get(constants.LANGUAGES_API_ENDPOINT_URL, data=params)
+    responseInJSON = json.loads(str(availableLanguagesRequest.text))
+
+    for arrayMember in responseInJSON:
+        availableLanguages.append(arrayMember["language"])
+    print("done")
 
     argumentParser = argparse.ArgumentParser(description="Translate text using Deepl service")
 
@@ -23,8 +35,30 @@ def main():
         type=str
     )
 
+    argumentParser.add_argument(
+        "--target_lang",
+        help="Language to translate text to",
+        type=str
+    )
+
     arguments = argumentParser.parse_args()
 
+    languageIsAvailable = bool(False)
+    for language in availableLanguages:
+        if not arguments.target_lang == language:
+            continue
+        elif arguments.target_lang == language:
+            languageIsAvailable = True
+            break
+
+    if not languageIsAvailable:
+        print("[ERROR][PREFLIGHT] Language {0} is not supported!".format(arguments.target_lang))
+        print("[INFO][TERMINATION] Supported languages are:", end=" ")
+        for language in availableLanguages:
+            print("{0}".format(language), end=" ")
+        print("\n")
+        exit(1)
+
     if not os.path.exists(arguments.file):
         print("[ERROR][PREFLIGHT] File {0} not found!".format(arguments.file))
         exit(1)
@@ -34,7 +68,7 @@ def main():
         fileContent = readOnlyFileDescriptor.read()
 
     params = {
-        "auth_key": constants.API_ACCESS_KEY,
+        "auth_key": constants.API_ACCESS_KEY
     }
 
     print("[INFO][PREFLIGHT] Performing subscription check...", end="")
@@ -54,7 +88,7 @@ def main():
         params = {
             "auth_key": constants.API_ACCESS_KEY,
             "text": fileContent,
-            "target_lang": "EN"
+            "target_lang": arguments.target_lang
         }
 
         translationRequest = requests.get(constants.TRANSLATE_API_ENDPOINT_URL, data=params)