4 files changed, 217 insertions, 7 deletions

diff --git a/handlers/user/__init__.py b/handlers/user/__init__.py
index a0e719f..7eee69a 100644
--- a/handlers/user/__init__.py
+++ b/handlers/user/__init__.py
@@ -5,6 +5,7 @@ from . import info
 from . import vpn_link
 from . import pay_invoice
 from . import announcements
+from . import invoices
 # isort: on
 
 router = Router(name="user")
@@ -13,4 +14,5 @@ router.include_routers(
     vpn_link.router,
     pay_invoice.router,
     announcements.router,
+    invoices.router,
 )
diff --git a/handlers/user/announcements.py b/handlers/user/announcements.py
index 8f4aa43..dc85b54 100644
--- a/handlers/user/announcements.py
+++ b/handlers/user/announcements.py
@@ -16,11 +16,17 @@ router = Router(name="announcements")
 PAGE_SIZE = 5
 
 
-async def get_reply_markup(page: int, session: AsyncSession) -> InlineKeyboardMarkup:
+async def get_reply_markup(
+    page: int,
+    session: AsyncSession,
+) -> InlineKeyboardMarkup | None:
     total = await session.scalar(select(count()).select_from(Announcement))
     assert total is not None
     total_pages = ceil(total / PAGE_SIZE)
 
+    if total == 0:
+        return None
+
     page = max(0, min(page, total_pages - 1))
     query = (
         select(Announcement)
@@ -64,10 +70,13 @@ async def get_reply_markup(page: int, session: AsyncSession) -> InlineKeyboardMa
 
 @router.message(Command("announcements"))
 async def command(msg: Message, bot: Bot, session: AsyncSession) -> None:
-    await msg.answer(
-        "Выберете анонс для просмотра.",
-        reply_markup=await get_reply_markup(0, session),
-    )
+    reply_markup = await get_reply_markup(0, session)
+
+    if reply_markup is None:
+        await msg.answer("Нету анонсов для просмотра.")
+        return
+
+    await msg.answer("Выберете анонс для просмотра.", reply_markup=reply_markup)
 
 
 @router.callback_query(AnnouncePageClb.filter())
@@ -80,7 +89,7 @@ async def page(
 
     reply_markup = await get_reply_markup(callback_data.page, session)
     await clb.message.edit_text(
-        "Выберете анонс для просмотра.",
+        "Выберете анонс для просмотра:",
         reply_markup=reply_markup,
     )
 
diff --git a/handlers/user/invoices.py b/handlers/user/invoices.py
new file mode 100644
index 0000000..cc071bb
--- /dev/null
+++ b/handlers/user/invoices.py
@@ -0,0 +1,179 @@
+from math import ceil
+
+from aiogram import Bot, Router
+from aiogram.filters import Command
+from aiogram.types import (
+    CallbackQuery,
+    InlineKeyboardButton,
+    InlineKeyboardMarkup,
+    Message,
+)
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.sql.functions import count
+
+from libs.invoice import (
+    InvoiceStatus,
+    get_invoice_payments,
+    get_payment_status,
+)
+from libs.msg import eclipse_text
+from libs.user import mention
+from models import Invoice, PaymentStatus, User
+from models.callback_data import InvoiceItemClb, InvoicePageClb, PayInvoiceClb
+
+router = Router(name="invoices")
+PAGE_SIZE = 5
+PAYMENT_STATUS = {
+    PaymentStatus.PENDING: "🟡",
+    PaymentStatus.ACCEPTED: "🟢",
+    PaymentStatus.REJECTED: "🔴",
+}
+INVOICE_STATUS = {
+    InvoiceStatus.PAID: "🟢",
+    InvoiceStatus.UNPAID: "🔴",
+}
+
+
+def get_text(user: User) -> str:
+    if user.is_admin():
+        return "Выберете счёт для просмотра информации:"
+    else:
+        return "Выберете счёт для оплаты:"
+
+
+async def get_reply_markup(
+    page: int,
+    user: User,
+    session: AsyncSession,
+) -> InlineKeyboardMarkup | None:
+    total = await session.scalar(
+        select(count()).select_from(Invoice).where(Invoice.datetime >= user.datetime)
+    )
+    assert total is not None
+    total_pages = ceil(total / PAGE_SIZE)
+
+    if total == 0:
+        return None
+
+    page = max(0, min(page, total_pages - 1))
+    query = (
+        select(Invoice)
+        .where(Invoice.datetime >= user.datetime)
+        .offset(PAGE_SIZE * page)
+        .limit(PAGE_SIZE)
+        .order_by(Invoice.id.desc())
+    )
+    invoices = await session.scalars(query)
+
+    invoice_buttons = []
+    for i in invoices:
+        if user.is_admin():
+            invoice_payments = await get_invoice_payments(session, i)
+            status = INVOICE_STATUS[invoice_payments.status]
+            callback_data = InvoiceItemClb(page=page, invoice_id=i.id).pack()
+        else:
+            status = PAYMENT_STATUS[await get_payment_status(session, i.id, user.id)]
+            callback_data = PayInvoiceClb(invoice_id=i.id).pack()
+
+        button = InlineKeyboardButton(
+            text=(
+                f"{status} "
+                f"{eclipse_text(i.message.text, 10)} "
+                f"({i.datetime.strftime('%d %b %y г.')})"
+            ),
+            callback_data=callback_data,
+        )
+
+        invoice_buttons.append([button])
+
+    page_buttons = []
+    if page > 0:
+        page_buttons.append(
+            InlineKeyboardButton(
+                text="◀️",
+                callback_data=InvoicePageClb(page=page - 1).pack(),
+            )
+        )
+    if page < total_pages - 1:
+        page_buttons.append(
+            InlineKeyboardButton(
+                text="▶️",
+                callback_data=InvoicePageClb(page=page + 1).pack(),
+            )
+        )
+
+    return InlineKeyboardMarkup(inline_keyboard=[*invoice_buttons, page_buttons])
+
+
+@router.message(Command("invoices"))
+async def command(msg: Message, session: AsyncSession, user: User) -> None:
+    reply_markup = await get_reply_markup(0, user, session)
+
+    if reply_markup is None:
+        await msg.answer("Нету счетов для оплаты.")
+        return
+
+    await msg.answer(get_text(user), reply_markup=reply_markup)
+
+
+@router.callback_query(InvoicePageClb.filter())
+async def page(
+    clb: CallbackQuery,
+    callback_data: InvoicePageClb,
+    session: AsyncSession,
+    user: User,
+) -> None:
+    assert isinstance(clb.message, Message)
+    await clb.message.edit_text(
+        get_text(user),
+        reply_markup=await get_reply_markup(callback_data.page, user, session),
+    )
+
+    await clb.answer()
+
+
+@router.callback_query(InvoiceItemClb.filter())
+async def item(
+    clb: CallbackQuery,
+    bot: Bot,
+    callback_data: InvoiceItemClb,
+    session: AsyncSession,
+    user: User,
+) -> None:
+    assert isinstance(clb.message, Message)
+    if not user.is_admin():
+        await clb.answer("У вас нет прав для данного действия.", show_alert=True)
+        return
+
+    invoice = await session.get(Invoice, callback_data.invoice_id)
+    assert invoice is not None
+    invoice_payments = await get_invoice_payments(session, invoice)
+
+    text_template = (
+        f"Статус оплаты счёта: {INVOICE_STATUS[invoice_payments.status]}\n"
+        "Пользователи оплатившие счёт:\n"
+        "{}"
+    )
+    reply_markup = InlineKeyboardMarkup(
+        inline_keyboard=[
+            [
+                InlineKeyboardButton(
+                    text="Назад к выбору",
+                    callback_data=InvoicePageClb(page=callback_data.page).pack(),
+                )
+            ]
+        ]
+    )
+
+    await clb.message.edit_text(text_template.format("..."), reply_markup=reply_markup)
+    user_status = []
+    for user_id, s in invoice_payments.user_status.items():
+        chat = await bot.get_chat(user_id)
+        user_status.append(f"{PAYMENT_STATUS[s]} - {mention(chat)}")
+        await clb.message.edit_text(
+            text_template.format("\n".join(user_status)),
+            reply_markup=reply_markup,
+        )
+
+    await clb.answer()
diff --git a/handlers/user/pay_invoice.py b/handlers/user/pay_invoice.py
index 98f80a6..db75f47 100644
--- a/handlers/user/pay_invoice.py
+++ b/handlers/user/pay_invoice.py
@@ -20,7 +20,15 @@ from sqlalchemy.ext.asyncio import AsyncSession
 
 from libs.fsm import get_data, set_data
 from libs.user import mention
-from models import Payment, PaymentStatus, ReceiptFile, ReceiptFileType, User, UserRole
+from models import (
+    Invoice,
+    Payment,
+    PaymentStatus,
+    ReceiptFile,
+    ReceiptFileType,
+    User,
+    UserRole,
+)
 from models.callback_data import PayInvoiceClb, PaymentStatusClb
 
 router = Router(name="pay_invoice")
@@ -44,7 +52,19 @@ async def button(
     state: FSMContext,
     callback_data: PayInvoiceClb,
     session: AsyncSession,
+    user: User,
 ) -> None:
+    if user.is_admin():
+        await clb.answer("Администраторы не могут оплачивать счета", show_alert=True)
+        return
+
+    invoice = await session.get(Invoice, callback_data.invoice_id)
+    assert invoice is not None
+
+    if user.datetime > invoice.datetime:
+        await clb.answer("Вы не можете оплатить данный счёт", show_alert=True)
+        return
+
     payment = await session.scalar(
         select(Payment).where(
             and_(