Initial release

backend/app/bot/handlers/start.py

@@ -0,0 +1,50 @@
+from aiogram import Router
+from aiogram.filters import Command, CommandObject, CommandStart
+from aiogram.types import Message
+
+from app.bot.keyboards.inline import create_lottery_keyboard, lottery_detail_keyboard, main_menu_keyboard
+
+router = Router()
+
+
+@router.message(CommandStart())
+async def cmd_start(message: Message, command: CommandObject) -> None:
+    # Deep-link from group announcement: /start lottery_<uuid>
+    if command.args and command.args.startswith("lottery_"):
+        lottery_id = command.args[len("lottery_"):]
+        await message.answer(
+            "🎰 Tap the button below to join the lottery:",
+            reply_markup=lottery_detail_keyboard(lottery_id),
+        )
+        return
+
+    await message.answer(
+        "👋 Welcome to <b>TG Lottery Bot</b>!\n\n"
+        "Tap the button below to get started. Use /help for more information.",
+        reply_markup=main_menu_keyboard(),
+        parse_mode="HTML",
+    )
+
+
+@router.message(Command("newlottery"))
+async def cmd_new_lottery(message: Message) -> None:
+    await message.answer("Create a new lottery 👇", reply_markup=create_lottery_keyboard())
+
+
+@router.message(Command("mylotteries"))
+async def cmd_my_lotteries(message: Message) -> None:
+    await message.answer("View my lotteries 👇", reply_markup=main_menu_keyboard())
+
+
+@router.message(Command("help"))
+async def cmd_help(message: Message) -> None:
+    await message.answer(
+        "📖 <b>TG Lottery Bot</b>\n\n"
+        "<b>Commands</b>\n"
+        "/start - Open lottery manager\n"
+        "/newlottery - Create a new lottery\n"
+        "/mylotteries - View my lotteries\n"
+        "/help - Show this help message\n\n"
+        "📦 <b>Powered by</b> git.stdm.moe/Stardream/TGLotteryBot",
+        parse_mode="HTML",
+    )