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"""Tests for Telegram notification service."""
import os
import uuid
from decimal import Decimal
from datetime import datetime, timezone
from unittest.mock import AsyncMock, MagicMock, patch

import pytest
import pytest_asyncio

from shared.models import Signal, Order, OrderSide, OrderType, OrderStatus, Position
from shared.notifier import TelegramNotifier


class TestTelegramNotifierEnabled:
    """Test the enabled property."""

    def test_disabled_when_no_token(self):
        notifier = TelegramNotifier(bot_token="", chat_id="123")
        assert notifier.enabled is False

    def test_enabled_with_token(self):
        notifier = TelegramNotifier(bot_token="fake-token", chat_id="123")
        assert notifier.enabled is True

    def test_disabled_when_token_is_empty_string(self):
        notifier = TelegramNotifier(bot_token="", chat_id="")
        assert notifier.enabled is False


class TestTelegramNotifierSend:
    """Test send method."""

    @pytest.mark.asyncio
    async def test_send_does_nothing_when_disabled(self):
        notifier = TelegramNotifier(bot_token="", chat_id="123")
        # Should not raise or do anything
        await notifier.send("test message")

    @pytest.mark.asyncio
    async def test_send_posts_to_api(self):
        notifier = TelegramNotifier(bot_token="fake-token", chat_id="12345")

        mock_response = AsyncMock()
        mock_response.status = 200
        mock_response.json = AsyncMock(return_value={"ok": True})
        mock_response.__aenter__ = AsyncMock(return_value=mock_response)
        mock_response.__aexit__ = AsyncMock(return_value=False)

        mock_session = AsyncMock()
        mock_session.post = MagicMock(return_value=mock_response)

        with patch.object(notifier, "_session", mock_session):
            await notifier.send("Hello, world!")

        mock_session.post.assert_called_once()
        call_args = mock_session.post.call_args
        assert "fake-token" in call_args[0][0]
        assert call_args[1]["json"]["chat_id"] == "12345"
        assert call_args[1]["json"]["text"] == "Hello, world!"
        assert call_args[1]["json"]["parse_mode"] == "HTML"

    @pytest.mark.asyncio
    async def test_send_with_custom_parse_mode(self):
        notifier = TelegramNotifier(bot_token="fake-token", chat_id="12345")

        mock_response = AsyncMock()
        mock_response.status = 200
        mock_response.json = AsyncMock(return_value={"ok": True})
        mock_response.__aenter__ = AsyncMock(return_value=mock_response)
        mock_response.__aexit__ = AsyncMock(return_value=False)

        mock_session = AsyncMock()
        mock_session.post = MagicMock(return_value=mock_response)

        with patch.object(notifier, "_session", mock_session):
            await notifier.send("test", parse_mode="Markdown")

        call_args = mock_session.post.call_args
        assert call_args[1]["json"]["parse_mode"] == "Markdown"


class TestTelegramNotifierFormatters:
    """Test message formatting methods."""

    @pytest.mark.asyncio
    async def test_send_signal_formats_message(self):
        notifier = TelegramNotifier(bot_token="fake-token", chat_id="123")
        signal = Signal(
            strategy="rsi_strategy",
            symbol="BTCUSDT",
            side=OrderSide.BUY,
            price=Decimal("50000.00"),
            quantity=Decimal("0.01"),
            reason="RSI oversold",
        )

        with patch.object(notifier, "send", new_callable=AsyncMock) as mock_send:
            await notifier.send_signal(signal)
            mock_send.assert_called_once()
            msg = mock_send.call_args[0][0]
            assert "BUY" in msg
            assert "rsi_strategy" in msg
            assert "BTCUSDT" in msg
            assert "50000.00" in msg
            assert "0.01" in msg
            assert "RSI oversold" in msg

    @pytest.mark.asyncio
    async def test_send_order_formats_message(self):
        notifier = TelegramNotifier(bot_token="fake-token", chat_id="123")
        order = Order(
            signal_id=str(uuid.uuid4()),
            symbol="ETHUSDT",
            side=OrderSide.SELL,
            type=OrderType.LIMIT,
            price=Decimal("3000.50"),
            quantity=Decimal("1.5"),
            status=OrderStatus.FILLED,
        )

        with patch.object(notifier, "send", new_callable=AsyncMock) as mock_send:
            await notifier.send_order(order)
            mock_send.assert_called_once()
            msg = mock_send.call_args[0][0]
            assert "FILLED" in msg
            assert "ETHUSDT" in msg
            assert "SELL" in msg
            assert "3000.50" in msg
            assert "1.5" in msg

    @pytest.mark.asyncio
    async def test_send_error_formats_message(self):
        notifier = TelegramNotifier(bot_token="fake-token", chat_id="123")

        with patch.object(notifier, "send", new_callable=AsyncMock) as mock_send:
            await notifier.send_error("Connection failed", service="executor")
            mock_send.assert_called_once()
            msg = mock_send.call_args[0][0]
            assert "Connection failed" in msg
            assert "executor" in msg

    @pytest.mark.asyncio
    async def test_send_daily_summary_formats_message(self):
        notifier = TelegramNotifier(bot_token="fake-token", chat_id="123")
        positions = [
            Position(
                symbol="BTCUSDT",
                quantity=Decimal("0.1"),
                avg_entry_price=Decimal("50000"),
                current_price=Decimal("51000"),
            ),
        ]

        with patch.object(notifier, "send", new_callable=AsyncMock) as mock_send:
            await notifier.send_daily_summary(
                positions=positions,
                total_value=Decimal("5100.00"),
                daily_pnl=Decimal("100.00"),
            )
            mock_send.assert_called_once()
            msg = mock_send.call_args[0][0]
            assert "BTCUSDT" in msg
            assert "5100.00" in msg
            assert "100.00" in msg


class TestTelegramNotifierClose:
    """Test close method."""

    @pytest.mark.asyncio
    async def test_close_closes_session(self):
        notifier = TelegramNotifier(bot_token="fake-token", chat_id="123")
        mock_session = AsyncMock()
        notifier._session = mock_session
        await notifier.close()
        mock_session.close.assert_called_once()