1 files changed, 57 insertions, 0 deletions
diff --git a/src/home/bot/util.py b/src/home/bot/util.py
new file mode 100644
index 0000000..4f80a67
--- /dev/null
+++ b/src/home/bot/util.py
@@ -0,0 +1,57 @@
+from telegram import User
+from .lang import LangStrings
+
+_strings = {
+    'en': LangStrings(
+        usage='Usage',
+        arguments='Arguments'
+    ),
+    'ru': LangStrings(
+        usage='Использование',
+        arguments='Аргументы'
+    )
+}
+
+
+def command_usage(command: str, arguments: dict, language='en') -> str:
+    if language not in _strings:
+        raise ValueError('unsupported language')
+
+    blocks = []
+    argument_names = []
+    argument_lines = []
+    for k, v in arguments.items():
+        argument_names.append(k)
+        argument_lines.append(
+            f'<code>{k}</code>: {v}'
+        )
+
+    command = f'/{command}'
+    if argument_names:
+        command += ' ' + ' '.join(argument_names)
+
+    blocks.append(
+        f'<b>{_strings[language]["usage"]}</b>\n'
+        f'<code>{command}</code>'
+    )
+
+    if argument_lines:
+        blocks.append(
+            f'<b>{_strings[language]["arguments"]}</b>\n' + '\n'.join(argument_lines)
+        )
+
+    return '\n\n'.join(blocks)
+
+
+def user_any_name(user: User) -> str:
+    name = [user.first_name, user.last_name]
+    name = list(filter(lambda s: s is not None, name))
+    name = ' '.join(name).strip()
+
+    if not name:
+        name = user.username
+
+    if not name:
+        name = str(user.id)
+
+    return name