feat: implement subscription management and billing enhancements

bot/handlers/deposit.py

@@ -8,8 +8,10 @@ from bot.states.deposit import DepositStorage
 from bot.texts import (
     CHECKOUT_PAYMENT_CHOICE,
     DEPOSIT_AMOUNT,
+    DEPOSIT_AMOUNT_BELOW_MINIMAL,
     DEPOSIT_AMOUNT_FALLBACK,
 )
+from config import settings
 from schemas.billing import BillingContext
 from schemas.common import GeneralMessageContext
 
@@ -22,7 +24,7 @@ async def deposit_init(cb: CallbackQuery, state: FSMContext):
 
     await cb.message.edit_text(DEPOSIT_AMOUNT, reply_markup=return_to_menu)
 
-    ctx = GeneralMessageContext(cb.message)
+    ctx = GeneralMessageContext(msg=cb.message)
     await state.set_state(DepositStorage.amount)
     await state.set_data({"ctx": ctx})
 
@@ -40,6 +42,15 @@ async def deposit_amount(msg: Message, state: FSMContext):
         await state.set_data(data)
         return
 
+    if int(msg.text) < settings.deposit_threshold:
+        await ctx.msg.edit_text(
+            DEPOSIT_AMOUNT_BELOW_MINIMAL.format(threshold=settings.deposit_threshold),
+            reply_markup=return_to_menu,
+        )
+        await state.set_state(DepositStorage.amount)
+        await state.set_data(data)
+        return
+
     await ctx.msg.edit_text(CHECKOUT_PAYMENT_CHOICE, reply_markup=payment_gateways)
     await state.set_state(BillingStorage.pending)
     billing_context = BillingContext(amount=int(msg.text))