add mailing function

app/bot/dialogs/flows/mailing/dialogs.py

@@ -0,0 +1,43 @@
+from aiogram_dialog import Dialog, Window
+from aiogram_dialog.widgets.input import MessageInput
+from aiogram_dialog.widgets.kbd import Back, Button, Cancel
+from aiogram_dialog.widgets.text import Const
+
+# from .getters import event_getter, events_list_getter, registration_getter
+from .handlers import choose_recipients, confirm_mailing, message_data
+from .states import MailingSG
+
+mailing_dialog = Dialog(
+    Window(
+        Const("Пришлите сообщение которое хотите разослать"),
+        MessageInput(message_data),
+        Cancel(Const("Отмена")),
+        state=MailingSG.message_data,
+    ),
+    Window(
+        Const("Кому отправить сообщение?"),
+        Button(
+            Const("Всем"),
+            id="send_all",
+            on_click=choose_recipients,
+        ),
+        Button(
+            Const("Не админам"),
+            id="send_users",
+            on_click=choose_recipients,
+        ),
+        Back(Const("Назад")),
+        state=MailingSG.recipients,
+    ),
+    Window(
+        Const("Начать рассылку?"),
+        Button(
+            Const("Разослать"),
+            id="start_mailing",
+            on_click=confirm_mailing,
+        ),
+        Back(Const("Назад")),
+        Cancel(Const("Отмена")),
+        state=MailingSG.confirm,
+    ),
+)

app/bot/dialogs/flows/mailing/handlers.py

@@ -0,0 +1,54 @@
+import asyncio
+
+from aiogram.types import CallbackQuery, Message
+from aiogram_dialog import DialogManager
+from aiogram_dialog.widgets.input import MessageInput
+from aiogram_dialog.widgets.kbd import Button
+
+from app.infrastructure.database.crud import get_users
+
+
+async def message_data(
+    message: Message,
+    widget: MessageInput,
+    manager: DialogManager,
+):
+    manager.dialog_data["message"] = message
+    await manager.next()
+
+
+async def choose_recipients(
+    callback: CallbackQuery,
+    button: Button,
+    manager: DialogManager,
+):
+    manager.dialog_data["recipients"] = button.widget_id
+    await manager.next()
+
+
+async def confirm_mailing(
+    callback: CallbackQuery,
+    button: Button,
+    manager: DialogManager,
+):
+    print(manager.dialog_data["recipients"])
+    users = list(await get_users(
+        manager.middleware_data["session"],
+        exclude_admins=manager.dialog_data["recipients"] == "send_users",
+    ))
+
+    await asyncio.gather(
+        *[
+            callback.bot.copy_message(
+                chat_id=user.tg_id,
+                from_chat_id=manager.dialog_data["message"].chat.id,
+                message_id=manager.dialog_data["message"].message_id,
+            )
+            for user in users
+        ]
+    )
+    await callback.bot.send_message(
+        chat_id=callback.from_user.id,
+        text=f"Разослано сообщений: {len(users)}",
+    )
+    await manager.done()

app/bot/dialogs/flows/mailing/states.py

@@ -0,0 +1,8 @@
+from aiogram.fsm.state import State, StatesGroup
+
+
+class MailingSG(StatesGroup):
+    message_data = State()
+    recipients = State()
+    # mailing_date = State()
+    confirm = State()