some fixes in lessons

src/bot/bot_interface.py

@@ -17,7 +17,7 @@
                           lesson_end_handler, schedule_handler, start_handler,
                           success_registration_webapp_handler,
                           unknown_command_handler)
-from bot.handlers.conversation import help, schedule
+from bot.handlers.conversation import help
 from bot.handlers.feedback import body, subject
 from bot.persistence import DjangoPersistence
 from bot.states import UserStates
@@ -79,7 +79,7 @@ async def _build_app(self):
             start_handler,
             help_handler,
             success_registration_webapp_handler,
-            unknown_command_handler,  # Переименованный echo handler
+            unknown_command_handler,
             feedback_handler,
             schedule_handler,
             lesson_end_handler,
@@ -195,10 +195,10 @@ async def build_main_handler():
         persistent=True,
         states={
             UserStates.START: [
-                feedback_handler,
+                start_handler,
                 CallbackQueryHandler(help,
                                      pattern=f'^{UserStates.HELP.value}$'),
-                CallbackQueryHandler(schedule,
+                CallbackQueryHandler(schedule_handler,
                                      pattern=f'^{UserStates.SCHEDULE.value}$'),
             ],
             UserStates.HELP: [

src/bot/handlers/was_the_lesson.py

@@ -4,7 +4,7 @@
 )
 from telegram.ext import CallbackContext, CallbackQueryHandler
 
-from schooling.models import Lesson
+from schooling.models import Lesson, Student
 from bot.states import UserStates
 from bot.messages_texts.constants import (
     UNCOMPLETED_LESSON_FEEDBACK_MSG,
@@ -80,6 +80,9 @@ async def was_the_lesson_completed(update: Update, context: CallbackContext):
     if lesson.is_passed_teacher and lesson.is_passed_student:
         lesson.is_passed = True
         await lesson.asave()
+        student = await Student.objects.aget(telegram_id=student_tg_id)
+        student.paid_lessons -= 1
+        await student.asave()
         context.user_data['lesson_responses'].clear()
 
     if teacher_answ == 'no' or student_answ == 'no':

src/schooling/signals_bot.py

@@ -179,7 +179,6 @@ async def msg_change_lesson(sender, instance, created, **kwargs):
             lambda: instance.teacher_old.telegram_id,
         )()
         chat_ids = (student_telegram_id, teacher_old_telegram_id)
-        msg_teacher = await get_message_text(instance)
         msg_text = (
             f'Ваше занятие на тему "{instance.name}" '
             f'проведёт преподаватель {instance.teacher_id}\n'
@@ -205,7 +204,6 @@ async def msg_change_lesson(sender, instance, created, **kwargs):
                 await sync_to_async(lambda: instance.student_id.telegram_id)(),
                 await sync_to_async(lambda: instance.teacher_id.telegram_id)(),
             )
-            chat_id = None
 
         elif instance.teacher_old != instance.teacher_id:
             message_text = msg_text
@@ -230,12 +228,6 @@ async def msg_change_lesson(sender, instance, created, **kwargs):
                 reply_markup=reply_markup,
             )
 
-        if chat_id:
-            bot_token = settings.TELEGRAM_TOKEN
-            await send_message_to_user(
-                bot_token, chat_id, msg_teacher, reply_markup,
-            )
-
 
 @receiver(pre_delete, sender=Lesson)
 async def delete_lesson_and_send_msg(sender, instance, *args, **kwargs):