from __future__ import annotations

from unittest.mock import AsyncMock, MagicMock

import pytest

from yuxi.channels.adapters.wechat.adapter import WeChatAdapter
from yuxi.channels.adapters.wechat.outbound_adapter import WeChatOutboundAdapter
from yuxi.channels.adapters.wechat.retry_send import RetryConfig, SendRetrier
from yuxi.channels.models import (
    ChannelIdentity,
    ChannelResponse,
    ChannelType,
    DeliveryResult,
)


class TestWeChatSendChain:
    @pytest.fixture
    def wecom_adapter(self):
        config = {"corp_id": "test", "corp_secret": "test", "agent_id": "1000001", "dm_policy": "open"}
        adapter = WeChatAdapter(config)
        adapter._mode = "wecom"
        adapter._wecom_client = MagicMock()
        adapter._wecom_client.get_access_token = AsyncMock(return_value="test_token")
        adapter._http_client = AsyncMock()
        return adapter

    @pytest.fixture
    def mp_adapter(self):
        config = {"app_id": "test", "app_secret": "test", "dm_policy": "open"}
        adapter = WeChatAdapter(config)
        adapter._mode = "mp"
        adapter._mp_client = MagicMock()
        adapter._mp_client.get_access_token = AsyncMock(return_value="test_token")
        adapter._http_client = AsyncMock()
        return adapter

    @pytest.fixture
    def personal_adapter(self):
        config = {"bridge_url": "http://localhost:5555", "dm_policy": "open"}
        adapter = WeChatAdapter(config)
        adapter._mode = "personal"
        adapter._bridge_client = MagicMock()
        adapter._http_client = AsyncMock()
        return adapter

    @pytest.fixture
    def channel_response(self):
        return ChannelResponse(
            identity=ChannelIdentity(
                channel_id="wechat",
                channel_type=ChannelType.WECHAT,
                channel_user_id="user123",
                channel_chat_id="user123",
            ),
            content="测试消息",
            metadata={"chat_type": "direct"},
        )

    @pytest.mark.asyncio
    async def test_send_wecom_success(self, wecom_adapter, channel_response):
        mock_resp = MagicMock()
        mock_resp.json.return_value = {"errcode": 0, "errmsg": "ok", "msgid": "msg_abc123"}
        wecom_adapter._http_client.post = AsyncMock(return_value=mock_resp)

        result = await wecom_adapter.send(channel_response)
        assert result.success is True
        assert result.message_id == "msg_abc123"

    @pytest.mark.asyncio
    async def test_send_wecom_rate_limited(self, wecom_adapter, channel_response):
        wecom_adapter._rate_limiter._tokens = 0

        for i in range(30):
            channel_response.content = f"消息{i}"
            mock_resp = MagicMock()
            mock_resp.json.return_value = {"errcode": 0, "errmsg": "ok", "msgid": f"msg_{i}"}
            wecom_adapter._http_client.post = AsyncMock(return_value=mock_resp)
            await wecom_adapter.send(channel_response)
            wecom_adapter._rate_limiter._tokens = 1.0

        wecom_adapter._rate_limiter._tokens = 0
        result = await wecom_adapter.send(channel_response)
        assert result.success is False

    @pytest.mark.asyncio
    async def test_send_mp_success(self, mp_adapter, channel_response):
        mock_resp = MagicMock()
        mock_resp.json.return_value = {"errcode": 0, "errmsg": "ok", "msgid": 456789}
        mp_adapter._http_client.post = AsyncMock(return_value=mock_resp)

        result = await mp_adapter.send(channel_response)
        assert result.success is True
        assert result.message_id == "456789"

    @pytest.mark.asyncio
    async def test_send_bridge_success(self, personal_adapter, channel_response):
        personal_adapter._bridge_client.send_message = AsyncMock(
            return_value=DeliveryResult(success=True, message_id="bridge_123")
        )

        result = await personal_adapter.send(channel_response)
        assert result.success is True
        assert result.message_id == "bridge_123"

    @pytest.mark.asyncio
    async def test_send_bridge_silent(self, personal_adapter):
        response = ChannelResponse(
            identity=ChannelIdentity(
                channel_id="wechat",
                channel_type=ChannelType.WECHAT,
                channel_user_id="user123",
                channel_chat_id="user123",
            ),
            content="静默消息",
            metadata={"chat_type": "direct"},
        )
        personal_adapter._bridge_client.send_message = AsyncMock(
            return_value=DeliveryResult(success=True, message_id="silent_1")
        )

        result = await personal_adapter.send(response, disable_notification=True)
        assert result.success is True

    @pytest.mark.asyncio
    async def test_send_banned_temporarily(self, wecom_adapter, channel_response):
        wecom_adapter._banned = True
        wecom_adapter._banned_reason = "48001 API unauthorized"
        wecom_adapter._ban_permanent = False

        result = await wecom_adapter.send(channel_response)
        assert result.success is False
        assert "banned" in result.error.lower()

    @pytest.mark.asyncio
    async def test_send_banned_permanently(self, wecom_adapter, channel_response):
        wecom_adapter._banned = True
        wecom_adapter._ban_permanent = True
        wecom_adapter._banned_reason = "48001 API unauthorized"

        result = await wecom_adapter.send(channel_response)
        assert result.success is False
        assert "permanently banned" in result.error.lower()

    @pytest.mark.asyncio
    async def test_send_wecom_48001_ban_progressive(self, wecom_adapter, channel_response):
        result = DeliveryResult(success=False, error="errcode=48001 API unauthorized hint: [xxx]")
        wecom_adapter._check_banned_response(result)
        assert wecom_adapter._banned is True
        assert wecom_adapter._ban_permanent is False
        assert wecom_adapter._ban_attempts == 1
        assert wecom_adapter._ban_cooldown_until is not None

    @pytest.mark.asyncio
    async def test_wecom_ban_cooldown_expires(self, wecom_adapter):
        import time

        wecom_adapter._banned = True
        wecom_adapter._banned_reason = "48001"
        wecom_adapter._ban_permanent = False
        wecom_adapter._ban_attempts = 1
        wecom_adapter._ban_cooldown_until = time.time() - 1

        wecom_adapter._check_ban_cooldown()
        assert wecom_adapter._banned is False
        assert wecom_adapter._ban_cooldown_until is None


class TestSendRetrier:
    def test_retry_config_defaults(self):
        config = RetryConfig()
        assert config.max_retries == 3
        assert config.base_delay == 1.0
        assert config.max_delay == 30.0
        assert config.jitter_enabled is True

    def test_retry_config_from_adapter_config(self):
        cfg = RetryConfig.from_config({
            "retry_attempts": 5,
            "retry_min_delay": 2.0,
            "retry_max_delay": 60.0,
        })
        assert cfg.max_retries == 5
        assert cfg.base_delay == 2.0
        assert cfg.max_delay == 60.0

    @pytest.mark.asyncio
    async def test_retrier_success_first_attempt(self):
        retrier = SendRetrier()
        call_count = 0

        async def succeed():
            nonlocal call_count
            call_count += 1
            return "ok"

        result = await retrier.execute(succeed)
        assert result == "ok"
        assert call_count == 1

    @pytest.mark.asyncio
    async def test_retrier_retry_then_succeed(self):
        import httpx

        retrier = SendRetrier(RetryConfig(max_retries=3, base_delay=0.01))
        call_count = 0

        async def flaky():
            nonlocal call_count
            call_count += 1
            if call_count < 3:
                raise httpx.TimeoutException("timeout")
            return "ok"

        result = await retrier.execute(flaky)
        assert result == "ok"
        assert call_count == 3

    @pytest.mark.asyncio
    async def test_retrier_exhausted(self):
        import httpx

        retrier = SendRetrier(RetryConfig(max_retries=2, base_delay=0.01))
        call_count = 0

        async def always_fail():
            nonlocal call_count
            call_count += 1
            raise httpx.TimeoutException("timeout")

        with pytest.raises(httpx.TimeoutException):
            await retrier.execute(always_fail)
        assert call_count == 2

    @pytest.mark.asyncio
    async def test_retrier_non_retryable_http_error(self):
        import httpx

        retrier = SendRetrier()
        call_count = 0

        async def auth_fail():
            nonlocal call_count
            call_count += 1
            resp = MagicMock()
            resp.status_code = 403
            raise httpx.HTTPStatusError("forbidden", request=MagicMock(), response=resp)

        with pytest.raises(httpx.HTTPStatusError):
            await retrier.execute(auth_fail)
        assert call_count == 1

    @pytest.mark.asyncio
    async def test_retrier_rate_limit_backoff(self):
        import httpx

        retrier = SendRetrier(RetryConfig(max_retries=2, base_delay=0.01))
        call_count = 0

        async def rate_limited():
            nonlocal call_count
            call_count += 1
            resp = MagicMock()
            resp.status_code = 429
            raise httpx.HTTPStatusError("rate limited", request=MagicMock(), response=resp)

        with pytest.raises(httpx.HTTPStatusError):
            await retrier.execute(rate_limited)
        assert call_count == 2


class TestOutboundAdapter:
    def test_build_attached_results_success(self):
        adapter = WeChatOutboundAdapter()
        result = DeliveryResult(success=True, message_id="msg_123")
        attached = adapter.build_attached_results(result, mode="wecom")
        assert attached["success"] is True
        assert attached["message_id"] == "msg_123"
        assert attached["sent_message_id"] == "msg_123"
        assert attached["mode"] == "wecom"

    def test_build_attached_results_failure(self):
        adapter = WeChatOutboundAdapter()
        result = DeliveryResult(success=False, error="test error")
        attached = adapter.build_attached_results(result)
        assert attached["success"] is False
        assert attached["error"] == "test error"
        assert attached["message_id"] is None

    def test_build_attached_results_with_metadata(self):
        adapter = WeChatOutboundAdapter()
        result = DeliveryResult(
            success=True,
            message_id="msg_456",
            metadata={"delivery_time_ms": 120, "server": "wecom"},
        )
        attached = adapter.build_attached_results(result)
        assert attached["delivery_time_ms"] == 120
        assert attached["server"] == "wecom"

    def test_sort_outbound_messages_priority(self):
        messages = [
            {"msgtype": "text", "content": "normal"},
            {"msgtype": "voice", "content": "urgent"},
            {"msgtype": "image", "content": "photo"},
        ]
        sorted_msgs = WeChatOutboundAdapter.sort_outbound_messages(messages)
        assert sorted_msgs[0]["msgtype"] == "voice"
        assert sorted_msgs[1]["msgtype"] == "image"
        assert sorted_msgs[2]["msgtype"] == "text"

    def test_sort_outbound_messages_empty(self):
        assert WeChatOutboundAdapter.sort_outbound_messages([]) == []

    @pytest.mark.asyncio
    async def test_before_deliver_payload_adds_sent_at(self):
        adapter = WeChatOutboundAdapter()
        response = ChannelResponse(
            identity=ChannelIdentity(
                channel_id="wechat",
                channel_type=ChannelType.WECHAT,
                channel_user_id="u1",
                channel_chat_id="u1",
            ),
            content="test",
        )
        payload = await adapter.before_deliver_payload({}, response)
        assert "_sent_at" in payload
        assert isinstance(payload["_sent_at"], float)

    def test_should_suppress_local_payload_prompt(self):
        assert WeChatOutboundAdapter.should_suppress_local_payload_prompt({}) is True