"""Tests for the WhatsApp Cloud API adapter (Phase 2).

Covers the outbound Graph API send path and the inbound verify-token
handshake. The webhook POST path is currently a stub (Phase 3 will add
signature verification + dispatch); we just confirm it accepts a body
and returns 200 here.

All tests are fixture-driven — no live network. httpx is patched so the
adapter never reaches graph.facebook.com, and the aiohttp server is
exercised with synthetic ``Request`` objects.
"""

from __future__ import annotations

import asyncio
import json
from unittest.mock import AsyncMock, MagicMock

import pytest

from gateway.config import Platform


@pytest.fixture(autouse=True)
def _whatsapp_open_optin(monkeypatch):
    """Opt into WhatsApp allow-all for the file's dispatch-mechanics tests.

    The adapter now fails closed on ``dm_policy: open`` unless
    ``WHATSAPP_ALLOW_ALL_USERS`` / ``GATEWAY_ALLOW_ALL_USERS`` is set
    (SECURITY.md 2.6). These tests set ``_dm_policy = "open"`` as a stand-in
    for "process this DM" while exercising unrelated dispatch mechanics, so
    grant the opt-in here. Tests that specifically assert the gate override
    this within their own body.
    """
    monkeypatch.setenv("WHATSAPP_ALLOW_ALL_USERS", "true")


# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------

def _make_adapter(**overrides):
    """Build a WhatsAppCloudAdapter with test attributes (bypass __init__).

    Mirrors the pattern in tests/gateway/test_whatsapp_*.py.
    """
    from gateway.platforms.whatsapp_cloud import WhatsAppCloudAdapter

    adapter = WhatsAppCloudAdapter.__new__(WhatsAppCloudAdapter)
    adapter.platform = Platform.WHATSAPP_CLOUD
    adapter.config = MagicMock()
    adapter.config.extra = {}

    # Cloud-API-specific attributes
    adapter._phone_number_id = overrides.pop("phone_number_id", "1234567890")
    adapter._access_token = overrides.pop("access_token", "test-token")
    adapter._app_id = overrides.pop("app_id", "")
    adapter._app_secret = overrides.pop("app_secret", "")
    adapter._waba_id = overrides.pop("waba_id", "")
    adapter._verify_token = overrides.pop("verify_token", "")
    adapter._webhook_host = "127.0.0.1"
    adapter._webhook_port = 8090
    adapter._webhook_path = "/whatsapp/webhook"
    adapter._health_path = "/health"
    adapter._api_version = overrides.pop("api_version", "v20.0")
    adapter._runner = None
    adapter._http_client = None

    # Behavior-mixin contract
    adapter._reply_prefix = None
    adapter._dm_policy = "open"
    adapter._allow_from = set()
    adapter._group_policy = "open"
    adapter._group_allow_from = set()
    adapter._mention_patterns = []

    # Webhook dispatch state (Phase 3)
    from collections import OrderedDict
    adapter._seen_wamids = OrderedDict()
    adapter._duplicate_count = 0
    adapter._accepted_count = 0
    adapter._rejected_signature_count = 0

    # Phase 4 state — one-shot warnings.
    adapter._warned_no_ffmpeg = False

    # Phase 10 state — per-chat latest inbound wamid (for typing/read).
    adapter._last_inbound_wamid_by_chat = {}

    # Phase 9 state — interactive-button correlation dicts.
    adapter._clarify_state = {}
    adapter._exec_approval_state = {}
    adapter._slash_confirm_state = {}

    # BasePlatformAdapter contract — minimum to keep send/lifecycle happy
    adapter._running = True
    adapter._message_handler = None
    adapter._fatal_error_code = None
    adapter._fatal_error_message = None
    adapter._fatal_error_retryable = True
    adapter._fatal_error_handler = None
    adapter._active_sessions = {}
    adapter._pending_messages = {}
    adapter._background_tasks = set()
    adapter._auto_tts_disabled_chats = set()

    # Apply any leftover overrides directly
    for key, value in overrides.items():
        setattr(adapter, key, value)
    return adapter


@pytest.fixture
def authorized_interactive_env(monkeypatch):
    """``dm_policy: open`` requires an explicit allow-all opt-in on main."""
    monkeypatch.setenv("WHATSAPP_ALLOW_ALL_USERS", "true")


def _mock_httpx_response(status_code: int, json_body: dict):
    """Build an httpx-Response-like mock the adapter's ``send`` will accept."""
    resp = MagicMock()
    resp.status_code = status_code
    resp.json = MagicMock(return_value=json_body)
    resp.text = json.dumps(json_body)
    return resp


# ---------------------------------------------------------------------------
# Outbound send via Graph API
# ---------------------------------------------------------------------------

class TestSendText:
    """Outbound text-message path."""


    @pytest.mark.asyncio
    async def test_send_includes_bearer_auth(self):
        adapter = _make_adapter(access_token="my-secret-token")
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(
                200, {"messages": [{"id": "wamid.abc"}]}
            )
        )

        await adapter.send("15551234567", "hi")

        headers = adapter._http_client.post.call_args.kwargs["headers"]
        assert headers["Authorization"] == "Bearer my-secret-token"
        assert headers["Content-Type"] == "application/json"

    @pytest.mark.asyncio
    async def test_send_payload_shape(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(
                200, {"messages": [{"id": "wamid.abc"}]}
            )
        )

        await adapter.send("15551234567", "hello world")

        payload = adapter._http_client.post.call_args.kwargs["json"]
        assert payload["messaging_product"] == "whatsapp"
        assert payload["recipient_type"] == "individual"
        assert payload["to"] == "15551234567"
        assert payload["type"] == "text"
        assert payload["text"]["body"] == "hello world"
        assert payload["text"]["preview_url"] is True


    @pytest.mark.asyncio
    async def test_send_long_message_chunked(self):
        """Messages over the chunk limit are split into multiple POSTs."""
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(
                200, {"messages": [{"id": "wamid.x"}]}
            )
        )

        # MAX_MESSAGE_LENGTH = 4096 from the mixin. 8500 chars forces 2+ chunks.
        long_text = "a" * 8500
        await adapter.send("15551234567", long_text)

        # At least 2 POST calls
        assert adapter._http_client.post.call_count >= 2
        # Second call should NOT have context (only first chunk gets reply_to)
        first_call = adapter._http_client.post.call_args_list[0]
        second_call = adapter._http_client.post.call_args_list[1]
        # No reply_to passed → no context anywhere, but verify structure anyway
        assert "context" not in second_call.kwargs["json"]

    @pytest.mark.asyncio
    async def test_send_graph_error_returns_failure(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(
                400,
                {
                    "error": {
                        "message": "Invalid parameter",
                        "type": "OAuthException",
                        "code": 100,
                        "fbtrace_id": "abc",
                    }
                },
            )
        )

        result = await adapter.send("15551234567", "hi")

        assert result.success is False
        assert "graph error 100" in result.error
        assert "Invalid parameter" in result.error


# ---------------------------------------------------------------------------
# Inbound webhook verify (GET) handshake
# ---------------------------------------------------------------------------

def _verify_request(query: dict):
    """Build a minimal aiohttp.web.Request stub for verify tests."""
    request = MagicMock()
    request.query = query
    return request


class TestWebhookVerify:
    """GET <webhook>?hub.mode=...&hub.verify_token=...&hub.challenge=..."""


    @pytest.mark.asyncio
    async def test_verify_rejects_non_ascii_token_without_raising(self):
        """A non-ASCII verify_token (raw query param) must be rejected with
        403, not crash the handler: hmac.compare_digest raises TypeError on a
        str containing non-ASCII characters."""
        adapter = _make_adapter(verify_token="shared-secret-123")
        request = _verify_request({
            "hub.mode": "subscribe",
            "hub.verify_token": "ské-not-the-secret",
            "hub.challenge": "abc-12345",
        })

        response = await adapter._handle_verify(request)

        assert response.status == 403


    @pytest.mark.asyncio
    async def test_verify_refuses_when_token_unconfigured(self):
        """An empty verify_token must NOT match an empty incoming token —
        otherwise an attacker who guesses the misconfiguration could
        subscribe their own webhook URL.
        """
        adapter = _make_adapter(verify_token="")
        request = _verify_request({
            "hub.mode": "subscribe",
            "hub.verify_token": "",
            "hub.challenge": "abc",
        })

        response = await adapter._handle_verify(request)

        assert response.status == 503  # service refuses to perform handshake


# ---------------------------------------------------------------------------
# Inbound webhook POST — signature verification + dispatch (Phase 3)
# ---------------------------------------------------------------------------

import hashlib
import hmac as _hmac_lib


def _sign(secret: str, body: bytes) -> str:
    """Compute the X-Hub-Signature-256 header value Meta would send."""
    digest = _hmac_lib.new(
        secret.encode("utf-8"), body, hashlib.sha256
    ).hexdigest()
    return f"sha256={digest}"


class _FakeRequestContent:
    def __init__(self, body: bytes):
        self.body = body
        self.read_sizes: list[int] = []

    async def readexactly(self, size: int) -> bytes:
        self.read_sizes.append(size)
        if len(self.body) < size:
            raise asyncio.IncompleteReadError(self.body, size)
        return self.body[:size]


def _post_request(body: bytes, headers: dict | None = None):
    """Build a minimal aiohttp.web.Request stub for POST tests."""
    request = MagicMock()
    request.content = _FakeRequestContent(body)
    request.headers = headers or {}
    return request


# A realistic Meta inbound text-message payload, modelled on the
# get-started docs sample.
_SAMPLE_INBOUND_TEXT_PAYLOAD = {
    "object": "whatsapp_business_account",
    "entry": [
        {
            "id": "215589313241560883",
            "changes": [
                {
                    "field": "messages",
                    "value": {
                        "messaging_product": "whatsapp",
                        "metadata": {
                            "display_phone_number": "15551797781",
                            "phone_number_id": "7794189252778687",
                        },
                        "contacts": [
                            {
                                "profile": {"name": "Jessica Laverdetman"},
                                "wa_id": "13557825698",
                            }
                        ],
                        "messages": [
                            {
                                "from": "13557825698",
                                "id": "wamid.HBgLMTM1NTc4MjU2OTgVAGHAYWYET688aASGNTI1QzZFQjhEMDk2QQA=",
                                "timestamp": "1758254144",
                                "text": {"body": "Hi!"},
                                "type": "text",
                            }
                        ],
                    },
                }
            ],
        }
    ],
}


class TestWebhookSignature:
    """X-Hub-Signature-256 HMAC verification."""

    @pytest.mark.asyncio
    async def test_valid_signature_accepted(self):
        adapter = _make_adapter(app_secret="signing-key-123")
        # Patch the dispatcher to a no-op so we don't depend on
        # MessageEvent construction here (covered separately).
        adapter._dispatch_payload = AsyncMock()
        body = b'{"object":"whatsapp_business_account","entry":[]}'
        request = _post_request(body, {"X-Hub-Signature-256": _sign("signing-key-123", body)})

        response = await adapter._handle_webhook(request)

        assert response.status == 200
        adapter._dispatch_payload.assert_called_once()

    @pytest.mark.asyncio
    async def test_tampered_body_rejected(self):
        adapter = _make_adapter(app_secret="signing-key-123")
        adapter._dispatch_payload = AsyncMock()
        original = b'{"object":"whatsapp_business_account"}'
        tampered = b'{"object":"evil_payload"}'
        sig_for_original = _sign("signing-key-123", original)
        request = _post_request(tampered, {"X-Hub-Signature-256": sig_for_original})

        response = await adapter._handle_webhook(request)

        assert response.status == 401
        adapter._dispatch_payload.assert_not_called()
        assert adapter._rejected_signature_count == 1


    @pytest.mark.asyncio
    async def test_unconfigured_app_secret_refuses_503(self):
        """Don't quietly accept webhooks when we can't authenticate them."""
        adapter = _make_adapter(app_secret="")
        adapter._dispatch_payload = AsyncMock()
        body = b'{"object":"whatsapp_business_account"}'
        request = _post_request(body, {"X-Hub-Signature-256": "sha256=deadbeef"})

        response = await adapter._handle_webhook(request)

        assert response.status == 503
        adapter._dispatch_payload.assert_not_called()


class TestWebhookReplay:
    """wamid dedup — Meta retries failed deliveries up to 7 days."""


    def test_dedup_cache_evicts_oldest(self):
        from gateway.platforms.whatsapp_cloud import WAMID_DEDUP_CACHE_SIZE
        adapter = _make_adapter()
        # Fill the cache plus 5 extra
        for i in range(WAMID_DEDUP_CACHE_SIZE + 5):
            assert adapter._dedup_wamid(f"wamid_{i}") is True
        assert len(adapter._seen_wamids) == WAMID_DEDUP_CACHE_SIZE
        # The first 5 should have been evicted
        assert "wamid_0" not in adapter._seen_wamids
        assert "wamid_4" not in adapter._seen_wamids
        assert "wamid_5" in adapter._seen_wamids
        assert f"wamid_{WAMID_DEDUP_CACHE_SIZE + 4}" in adapter._seen_wamids


class TestWebhookDispatch:
    """End-to-end dispatch from a verified payload to handle_message."""

    @pytest.mark.asyncio
    async def test_text_message_dispatched_with_event_shape(self):
        adapter = _make_adapter(app_secret="key")
        captured = []

        async def _capture(event):
            captured.append(event)

        adapter.handle_message = _capture
        body = json.dumps(_SAMPLE_INBOUND_TEXT_PAYLOAD).encode("utf-8")
        sig = _sign("key", body)
        request = _post_request(body, {"X-Hub-Signature-256": sig})

        response = await adapter._handle_webhook(request)

        assert response.status == 200
        assert len(captured) == 1
        event = captured[0]
        assert event.text == "Hi!"
        assert event.message_id == (
            "wamid.HBgLMTM1NTc4MjU2OTgVAGHAYWYET688aASGNTI1QzZFQjhEMDk2QQA="
        )
        assert event.source.platform == Platform.WHATSAPP_CLOUD
        assert event.source.chat_id == "13557825698"
        assert event.source.user_name == "Jessica Laverdetman"
        assert event.source.chat_type == "dm"

    @pytest.mark.asyncio
    async def test_dispatch_filters_via_mixin_gating(self):
        adapter = _make_adapter(app_secret="key")
        adapter._dm_policy = "disabled"  # block all DMs
        adapter.handle_message = AsyncMock()
        body = json.dumps(_SAMPLE_INBOUND_TEXT_PAYLOAD).encode("utf-8")
        sig = _sign("key", body)

        response = await adapter._handle_webhook(
            _post_request(body, {"X-Hub-Signature-256": sig})
        )

        assert response.status == 200
        adapter.handle_message.assert_not_called()
        # Gated messages don't increment the accepted counter
        assert adapter._accepted_count == 0


    @pytest.mark.asyncio
    async def test_dispatch_handles_button_reply(self):
        adapter = _make_adapter(app_secret="key")
        captured = []

        async def _capture(event):
            captured.append(event)

        adapter.handle_message = _capture
        payload = {
            "object": "whatsapp_business_account",
            "entry": [
                {
                    "id": "x",
                    "changes": [
                        {
                            "field": "messages",
                            "value": {
                                "messaging_product": "whatsapp",
                                "metadata": {"phone_number_id": "1"},
                                "contacts": [
                                    {"profile": {"name": "U"}, "wa_id": "1555"}
                                ],
                                "messages": [
                                    {
                                        "from": "1555",
                                        "id": "wamid.button1",
                                        "timestamp": "0",
                                        "type": "interactive",
                                        "interactive": {
                                            "type": "button_reply",
                                            "button_reply": {
                                                "id": "yes",
                                                "title": "Yes please",
                                            },
                                        },
                                    }
                                ],
                            },
                        }
                    ],
                }
            ],
        }
        body = json.dumps(payload).encode("utf-8")
        sig = _sign("key", body)

        response = await adapter._handle_webhook(
            _post_request(body, {"X-Hub-Signature-256": sig})
        )
        assert response.status == 200
        assert len(captured) == 1
        assert captured[0].text == "Yes please"


# ---------------------------------------------------------------------------
# Health endpoint
# ---------------------------------------------------------------------------

class TestHealth:

    @pytest.mark.asyncio
    async def test_health_flags_missing_secrets(self):
        adapter = _make_adapter(verify_token="", app_secret="")
        request = MagicMock()

        response = await adapter._handle_health(request)
        body = json.loads(response.text)
        assert body["verify_token_configured"] is False
        assert body["app_secret_configured"] is False


# ---------------------------------------------------------------------------
# Mixin contract — gating still works on the cloud adapter
# ---------------------------------------------------------------------------

class TestMixinInherited:
    """Sanity-check: the Cloud adapter inherits the same gating behavior
    as the Baileys adapter via WhatsAppBehaviorMixin.
    """


    def test_should_process_message_dm_open(self):
        adapter = _make_adapter()
        adapter._dm_policy = "open"
        assert adapter._should_process_message({
            "chatId": "15551234567@c.us",
            "senderId": "15551234567@c.us",
            "isGroup": False,
            "body": "hi",
        }) is True


# ---------------------------------------------------------------------------
# Outbound media — link mode + upload mode (Phase 4)
# ---------------------------------------------------------------------------

import os as _os
import tempfile as _tempfile
from unittest.mock import patch as _patch


def _mock_upload_response(media_id: str = "media_abc123"):
    """Graph /media POST response shape."""
    resp = MagicMock()
    resp.status_code = 200
    resp.json = MagicMock(return_value={"id": media_id})
    resp.text = json.dumps({"id": media_id})
    return resp


def _mock_message_response(wamid: str = "wamid.outbound1"):
    """Graph /messages POST response shape."""
    resp = MagicMock()
    resp.status_code = 200
    resp.json = MagicMock(return_value={"messages": [{"id": wamid}]})
    resp.text = json.dumps({"messages": [{"id": wamid}]})
    return resp


def _tmpfile(suffix: str = ".jpg", content: bytes = b"\xff\xd8\xff\xe0") -> str:
    """Write a small temp file and return its path. Caller cleans up."""
    fd, path = _tempfile.mkstemp(suffix=suffix)
    with _os.fdopen(fd, "wb") as fh:
        fh.write(content)
    return path


class TestSendImage:
    """send_image — public URL takes the link path; local file uploads first."""


    @pytest.mark.asyncio
    async def test_send_image_local_path_uploads_then_sends(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(side_effect=[
            _mock_upload_response("media_uploaded_id"),
            _mock_message_response(),
        ])
        path = _tmpfile(".jpg")
        try:
            result = await adapter.send_image_file("15551234567", path)
            assert result.success is True
            assert adapter._http_client.post.call_count == 2

            upload_url = adapter._http_client.post.call_args_list[0].args[0]
            send_url = adapter._http_client.post.call_args_list[1].args[0]
            assert upload_url.endswith("/media")
            assert send_url.endswith("/messages")

            send_payload = adapter._http_client.post.call_args_list[1].kwargs["json"]
            assert send_payload["image"] == {"id": "media_uploaded_id"}
        finally:
            _os.unlink(path)


    @pytest.mark.asyncio
    async def test_send_image_upload_failure_returns_failure(self):
        adapter = _make_adapter()
        # First call (upload) fails with a Graph error
        upload_fail = MagicMock()
        upload_fail.status_code = 400
        upload_fail.json = MagicMock(return_value={
            "error": {"code": 100, "message": "Bad media"}
        })
        upload_fail.text = '{"error":{"code":100,"message":"Bad media"}}'
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(return_value=upload_fail)

        path = _tmpfile(".jpg")
        try:
            result = await adapter.send_image_file("15551234567", path)
            assert result.success is False
            assert "graph error 100" in result.error
            # Only the upload call — never reached /messages
            assert adapter._http_client.post.call_count == 1
        finally:
            _os.unlink(path)


class TestSendVideo:
    @pytest.mark.asyncio
    async def test_send_video_link_mode(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(return_value=_mock_message_response())

        await adapter.send_video("15551234567", "https://cdn.example.com/v.mp4", caption="clip")
        payload = adapter._http_client.post.call_args.kwargs["json"]
        assert payload["type"] == "video"
        assert payload["video"]["link"] == "https://cdn.example.com/v.mp4"
        assert payload["video"]["caption"] == "clip"


class TestSendMethodsAcceptBaseClassKwargs:
    """Regression: every send_* method must absorb ``metadata=`` (and any
    other future kwargs) without raising TypeError.

    base.BasePlatformAdapter.send_multiple_images and friends pass
    ``metadata=...`` to send_image; if a subclass forgets ``**kwargs``,
    the agent crashes mid-send_multiple_images instead of just sending
    the image. This test guards against that for every Cloud send_*
    surface.
    """


    @pytest.mark.asyncio
    async def test_send_image_file_accepts_metadata(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(side_effect=[
            _mock_upload_response(),
            _mock_message_response(),
        ])
        path = _tmpfile(".jpg")
        try:
            result = await adapter.send_image_file(
                "15551234567", path, metadata={"x": 1},
            )
            assert result.success is True
        finally:
            _os.unlink(path)


    @pytest.mark.asyncio
    async def test_send_document_accepts_metadata(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(side_effect=[
            _mock_upload_response(),
            _mock_message_response(),
        ])
        path = _tmpfile(".pdf", content=b"%PDF")
        try:
            result = await adapter.send_document(
                "15551234567", path, metadata={"x": 1},
            )
            assert result.success is True
        finally:
            _os.unlink(path)


class TestSendDocument:
    @pytest.mark.asyncio
    async def test_send_document_filename_attached(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(side_effect=[
            _mock_upload_response("doc_id"),
            _mock_message_response(),
        ])
        path = _tmpfile(".pdf", content=b"%PDF-1.4 ...")
        try:
            await adapter.send_document(
                "15551234567", path, caption="Q3 report",
                file_name="report.pdf",
            )
            send_payload = adapter._http_client.post.call_args_list[1].kwargs["json"]
            assert send_payload["type"] == "document"
            assert send_payload["document"]["id"] == "doc_id"
            assert send_payload["document"]["caption"] == "Q3 report"
            assert send_payload["document"]["filename"] == "report.pdf"
        finally:
            _os.unlink(path)


class TestSendVoice:
    """MP3 voice with ffmpeg present -> opus; without ffmpeg -> MP3 fallback."""


    @pytest.mark.asyncio
    async def test_send_voice_ffmpeg_present_uses_opus(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(side_effect=[
            _mock_upload_response("voice_id"),
            _mock_message_response(),
        ])
        # Pretend ffmpeg conversion succeeded by returning a fake opus path.
        opus_path = _tmpfile(".ogg", content=b"OggS")
        adapter._convert_to_opus = AsyncMock(return_value=opus_path)

        mp3_path = _tmpfile(".mp3", content=b"ID3")
        try:
            result = await adapter.send_voice("15551234567", mp3_path)
            assert result.success is True
            # Conversion was invoked with the original MP3
            uploaded_path = adapter._convert_to_opus.call_args.args[0]
            assert uploaded_path == mp3_path
            send_payload = adapter._http_client.post.call_args_list[1].kwargs["json"]
            assert send_payload["type"] == "audio"
        finally:
            _os.unlink(mp3_path)
            if _os.path.exists(opus_path):
                _os.unlink(opus_path)


# ---------------------------------------------------------------------------
# Inbound media — Graph two-step download (Phase 4)
# ---------------------------------------------------------------------------

class TestDownloadMedia:
    """Two-step Graph media download: meta -> temp URL -> bytes."""

    @pytest.mark.asyncio
    async def test_two_step_download_writes_cache_file(self, tmp_path):
        from gateway.platforms import whatsapp_cloud as wac

        adapter = _make_adapter()
        adapter._http_client = MagicMock()

        # Step 1 — metadata returns temp URL + mime
        meta_resp = MagicMock(status_code=200)
        meta_resp.json = MagicMock(return_value={
            "url": "https://lookaside.fbsbx.com/whatsapp/m/...",
            "mime_type": "image/jpeg",
            "sha256": "abc",
            "file_size": 12345,
            "id": "media_xyz",
            "messaging_product": "whatsapp",
        })
        # Step 2 — bytes
        blob_resp = MagicMock(status_code=200, content=b"\xff\xd8\xff\xe0jpegdata")

        adapter._http_client.get = AsyncMock(side_effect=[meta_resp, blob_resp])

        with _patch.object(wac, "_INBOUND_MEDIA_CACHE", tmp_path):
            local_path, mime = await adapter._download_media_to_cache("media_xyz")

        assert mime == "image/jpeg"
        assert local_path is not None
        assert _os.path.exists(local_path)
        assert _os.path.basename(local_path).startswith("media_xyz")
        assert _os.path.basename(local_path).endswith(".jpg")
        with open(local_path, "rb") as fh:
            assert fh.read() == b"\xff\xd8\xff\xe0jpegdata"

    @pytest.mark.asyncio
    async def test_metadata_failure_returns_none(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        meta_fail = MagicMock(status_code=404)
        meta_fail.json = MagicMock(return_value={"error": {"code": 100}})
        adapter._http_client.get = AsyncMock(return_value=meta_fail)

        local_path, mime = await adapter._download_media_to_cache("missing")
        assert local_path is None and mime is None


class TestInboundMediaDispatch:
    """End-to-end: webhook with image_id -> adapter downloads -> MessageEvent.media_urls populated."""


    @pytest.mark.asyncio
    async def test_inbound_text_document_injected_into_body(self, tmp_path):
        """A .txt document should have its content prepended to the body."""
        from gateway.platforms import whatsapp_cloud as wac

        adapter = _make_adapter(app_secret="key")
        captured: list = []

        async def _capture(event):
            captured.append(event)

        adapter.handle_message = _capture

        text_content = b"hello\nthis is the file\n"
        meta_resp = MagicMock(status_code=200)
        meta_resp.json = MagicMock(return_value={
            "url": "https://lookaside.fbsbx.com/whatsapp/m/doc",
            "mime_type": "text/plain",
        })
        blob_resp = MagicMock(status_code=200, content=text_content)
        adapter._http_client = MagicMock()
        adapter._http_client.get = AsyncMock(side_effect=[meta_resp, blob_resp])

        payload = {
            "object": "whatsapp_business_account",
            "entry": [{
                "id": "x",
                "changes": [{
                    "field": "messages",
                    "value": {
                        "messaging_product": "whatsapp",
                        "metadata": {"phone_number_id": "1"},
                        "contacts": [{"profile": {"name": "U"}, "wa_id": "1555"}],
                        "messages": [{
                            "from": "1555",
                            "id": "wamid.doc1",
                            "timestamp": "0",
                            "type": "document",
                            "document": {
                                "id": "media_doc_abc",
                                "mime_type": "text/plain",
                                "filename": "notes.txt",
                            },
                        }],
                    },
                }],
            }],
        }
        body = json.dumps(payload).encode("utf-8")
        sig = _sign("key", body)

        with _patch.object(wac, "_INBOUND_MEDIA_CACHE", tmp_path):
            await adapter._handle_webhook(
                _post_request(body, {"X-Hub-Signature-256": sig})
            )

        assert len(captured) == 1
        event = captured[0]
        assert "hello\nthis is the file" in event.text
        assert "[Content of" in event.text
        # File still available in media_urls for the agent's other tools
        assert len(event.media_urls) == 1


# ---------------------------------------------------------------------------
# Group-shaped message guard
# ---------------------------------------------------------------------------

class TestGroupMessageGuard:
    """Cloud API group support is deferred to v2 (Meta capability-tier
    gated, different payload shape than DMs). If Meta delivers a
    group-shaped message — identifiable by a populated ``chat`` field
    on the message object — the adapter should refuse cleanly rather
    than silently treating the sender's wa_id as the chat_id (which
    would route the bot's reply back to the sender as a DM, not the
    group)."""

    @pytest.mark.asyncio
    async def test_group_shaped_message_dropped_with_warning(self, caplog):
        adapter = _make_adapter()
        adapter.handle_message = AsyncMock()
        raw = {
            "from": "15551234567",
            "id": "wamid.group1",
            "timestamp": "0",
            "type": "text",
            "text": {"body": "hi from a group"},
            "chat": "120363012345678901@g.us",  # presence of `chat` = group
        }
        with caplog.at_level("WARNING"):
            event = await adapter._build_message_event_from_cloud(
                raw, {"15551234567": "Alice"}, {}
            )
        assert event is None
        # Warning surfaced so the operator knows group messages are being dropped
        assert any(
            "group-shaped" in rec.message
            for rec in caplog.records
        )
        # Defensive: handler not invoked
        adapter.handle_message.assert_not_called()


# =========================================================================
# Phase 9 — Interactive button messages (clarify / approval / slash-confirm)
# =========================================================================
#
# These tests cover the four hooks the gateway uses for richer UX on
# platforms that support interactive buttons:
#   - send_clarify         (mid-conversation multi-choice question)
#   - send_exec_approval   (dangerous-command Y/N gate)
#   - send_slash_confirm   (3-button slash-command preview)
#   - _dispatch_interactive_reply (inbound side: route button taps to
#                                  the right resolver)
# Telegram and Discord have the same hooks; we mirror their callback-id
# format (cl:, appr:, sc:) so the gateway's existing degrade-to-text
# fallback works transparently.


class TestSendClarifyButtons:
    """``send_clarify`` outbound — picks button vs list mode by choice count."""

    @pytest.mark.asyncio
    async def test_three_choices_uses_button_mode(self):
        """1–3 choices → interactive.type=button (inline pills)."""
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(200, {"messages": [{"id": "wamid.q1"}]})
        )

        result = await adapter.send_clarify(
            chat_id="15551234567",
            question="Pick one",
            choices=["Alpha", "Bravo", "Charlie"],
            clarify_id="abc123",
            session_key="sess-1",
        )

        assert result.success
        payload = adapter._http_client.post.call_args.kwargs["json"]
        assert payload["type"] == "interactive"
        assert payload["interactive"]["type"] == "button"
        buttons = payload["interactive"]["action"]["buttons"]
        assert len(buttons) == 3
        assert [b["reply"]["title"] for b in buttons] == ["1", "2", "3"]
        assert buttons[0]["reply"]["id"] == "cl:abc123:0"
        assert buttons[2]["reply"]["id"] == "cl:abc123:2"
        body_text = payload["interactive"]["body"]["text"]
        assert "Alpha" in body_text and "Bravo" in body_text and "Charlie" in body_text
        assert adapter._clarify_state["abc123"] == "sess-1"


class TestSendExecApprovalButtons:
    """``send_exec_approval`` outbound — 2-button Approve/Deny gate."""

    @pytest.mark.asyncio
    async def test_approval_renders_two_buttons(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(200, {"messages": [{"id": "wamid.a1"}]})
        )

        result = await adapter.send_exec_approval(
            chat_id="15551234567",
            command="rm -rf /tmp/foo",
            session_key="sess-app-1",
            description="cleanup script",
        )

        assert result.success
        payload = adapter._http_client.post.call_args.kwargs["json"]
        assert payload["interactive"]["type"] == "button"
        buttons = payload["interactive"]["action"]["buttons"]
        assert len(buttons) == 2
        assert "Approve" in buttons[0]["reply"]["title"]
        assert "Deny" in buttons[1]["reply"]["title"]
        approve_id = buttons[0]["reply"]["id"]
        deny_id = buttons[1]["reply"]["id"]
        assert approve_id.startswith("appr:") and approve_id.endswith(":approve")
        assert deny_id.startswith("appr:") and deny_id.endswith(":deny")
        approval_id = approve_id.split(":")[1]
        assert deny_id.split(":")[1] == approval_id
        body = payload["interactive"]["body"]["text"]
        assert "rm -rf /tmp/foo" in body
        assert "cleanup script" in body
        assert adapter._exec_approval_state[approval_id] == "sess-app-1"


class TestSendSlashConfirmButtons:
    """``send_slash_confirm`` outbound — 3-button Once/Always/Cancel."""

    @pytest.mark.asyncio
    async def test_three_buttons_with_ids(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(200, {"messages": [{"id": "wamid.s1"}]})
        )

        result = await adapter.send_slash_confirm(
            chat_id="15551234567",
            title="Reload MCP",
            message="This will restart all MCP servers.",
            session_key="sess-sc-1",
            confirm_id="cf-9",
        )

        assert result.success
        payload = adapter._http_client.post.call_args.kwargs["json"]
        assert payload["interactive"]["type"] == "button"
        buttons = payload["interactive"]["action"]["buttons"]
        ids = [b["reply"]["id"] for b in buttons]
        assert ids == ["sc:once:cf-9", "sc:always:cf-9", "sc:cancel:cf-9"]
        assert adapter._slash_confirm_state["cf-9"] == "sess-sc-1"


@pytest.mark.usefixtures("authorized_interactive_env")
class TestDispatchInteractiveReplyClarify:
    """Inbound side: button-tap → clarify resolver."""


    @pytest.mark.asyncio
    async def test_clarify_other_button_keeps_state_and_prompts(self, monkeypatch):
        """Picking 'Other' should NOT resolve — it should flip the
        clarify entry into text-capture mode (via mark_awaiting_text)
        AND keep the state mapping so the gateway's text-intercept can
        resolve the next typed message. Without the flip,
        ``get_pending_for_session`` wouldn't return the entry and the
        user's next message would collide with the still-blocked agent
        thread, producing an "Interrupting current task" loop."""
        adapter = _make_adapter()
        adapter._clarify_state["q1"] = "sess-1"
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(200, {"messages": [{"id": "x"}]})
        )

        flipped_ids = []
        monkeypatch.setattr(
            "tools.clarify_gateway.mark_awaiting_text",
            lambda cid: flipped_ids.append(cid) or True,
        )

        raw = {
            "from": "15551234567",
            "type": "interactive",
            "interactive": {
                "type": "list_reply",
                "list_reply": {"id": "cl:q1:other", "title": "Other"},
            },
        }
        handled = await adapter._dispatch_interactive_reply(raw, {})

        assert handled is True
        # State stays so text-intercept can resolve the next message
        assert adapter._clarify_state.get("q1") == "sess-1"
        # mark_awaiting_text was called with the right clarify_id
        assert flipped_ids == ["q1"]
        # Follow-up "type your answer" prompt was sent
        adapter._http_client.post.assert_called_once()


    @pytest.mark.asyncio
    async def test_stale_clarify_tap_falls_back_to_text(self):
        """No state entry → return False so caller treats it as text."""
        adapter = _make_adapter()  # _clarify_state is empty

        raw = {
            "from": "15551234567",
            "type": "interactive",
            "interactive": {
                "type": "button_reply",
                "button_reply": {"id": "cl:ghost:0", "title": "1"},
            },
        }
        handled = await adapter._dispatch_interactive_reply(raw, {})
        assert handled is False


@pytest.mark.usefixtures("authorized_interactive_env")
class TestDispatchInteractiveReplyApproval:
    """Inbound side: approval-tap → resolve_gateway_approval."""

    @pytest.mark.asyncio
    async def test_approve_tap_calls_resolver_and_confirms(self, monkeypatch):
        adapter = _make_adapter()
        adapter._exec_approval_state["app1"] = "sess-app-1"
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(200, {"messages": [{"id": "x"}]})
        )

        calls = []
        monkeypatch.setattr(
            "tools.approval.resolve_gateway_approval",
            lambda session_key, choice: calls.append((session_key, choice)) or 1,
        )

        raw = {
            "from": "15551234567",
            "type": "interactive",
            "interactive": {
                "type": "button_reply",
                "button_reply": {"id": "appr:app1:approve", "title": "Approve"},
            },
        }
        handled = await adapter._dispatch_interactive_reply(raw, {})

        assert handled is True
        assert calls == [("sess-app-1", "approve")]
        assert "app1" not in adapter._exec_approval_state
        confirm_payload = adapter._http_client.post.call_args.kwargs["json"]
        assert confirm_payload["type"] == "text"
        assert "Approved" in confirm_payload["text"]["body"]


@pytest.mark.usefixtures("authorized_interactive_env")
class TestDispatchInteractiveReplySlashConfirm:
    """Inbound side: slash-confirm-tap → tools.slash_confirm.resolve."""

    @pytest.mark.asyncio
    async def test_once_tap_calls_resolver(self, monkeypatch):
        adapter = _make_adapter()
        adapter._slash_confirm_state["cf-9"] = "sess-sc-1"
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(200, {"messages": [{"id": "x"}]})
        )

        captured = {}

        async def fake_resolve(session_key, confirm_id, choice):
            captured.update(
                session_key=session_key, confirm_id=confirm_id, choice=choice
            )
            return "MCP reloaded."

        import tools.slash_confirm as _sc
        monkeypatch.setattr(_sc, "resolve", fake_resolve)

        raw = {
            "from": "15551234567",
            "type": "interactive",
            "interactive": {
                "type": "button_reply",
                "button_reply": {"id": "sc:once:cf-9", "title": "Approve Once"},
            },
        }
        handled = await adapter._dispatch_interactive_reply(raw, {})

        assert handled is True
        assert captured == {
            "session_key": "sess-sc-1",
            "confirm_id": "cf-9",
            "choice": "once",
        }
        reply_payload = adapter._http_client.post.call_args.kwargs["json"]
        assert "MCP reloaded" in reply_payload["text"]["body"]


class TestDispatchInteractiveReplyAuthorization:
    """Interactive taps must honor the same DM allowlist as text intake."""


    @pytest.mark.asyncio
    async def test_approval_tap_allowed_when_sender_allowlisted(self, monkeypatch):
        adapter = _make_adapter(
            _dm_policy="allowlist",
            _allow_from={"15551234567"},
        )
        adapter._exec_approval_state["app1"] = "sess-app-1"
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(200, {"messages": [{"id": "x"}]})
        )
        calls = []
        monkeypatch.setattr(
            "tools.approval.resolve_gateway_approval",
            lambda session_key, choice: calls.append((session_key, choice)) or 1,
        )

        raw = {
            "from": "15551234567",
            "type": "interactive",
            "interactive": {
                "type": "button_reply",
                "button_reply": {"id": "appr:app1:approve", "title": "Approve"},
            },
        }
        handled = await adapter._dispatch_interactive_reply(raw, {})

        assert handled is True
        assert calls == [("sess-app-1", "approve")]


@pytest.mark.usefixtures("authorized_interactive_env")
class TestInteractiveReplyEndToEnd:
    """Integration: `_build_message_event_from_cloud` must SHORT-CIRCUIT
    on a recognized interactive reply and NOT also produce a fresh
    conversation turn (which would double-fire the agent)."""

    @pytest.mark.asyncio
    async def test_recognized_tap_returns_none_no_text_dispatch(self, monkeypatch):
        adapter = _make_adapter()
        adapter._clarify_state["q1"] = "sess-1"
        monkeypatch.setattr(
            "tools.clarify_gateway.resolve_gateway_clarify",
            lambda cid, r: True,
        )

        raw = {
            "from": "15551234567",
            "id": "wamid.tap1",
            "type": "interactive",
            "interactive": {
                "type": "button_reply",
                "button_reply": {"id": "cl:q1:0", "title": "1"},
            },
        }
        event = await adapter._build_message_event_from_cloud(
            raw, {"15551234567": "Alice"}, {}
        )
        # The tap resolved the clarify; no MessageEvent dispatched so the
        # agent thread that was waiting on clarify is unblocked exactly
        # once, not once + a new turn for the tap.
        assert event is None


# =========================================================================
# Phase 10 — Typing indicator + mark-as-read
# =========================================================================
#
# Meta couples the read receipt and typing indicator into a single POST
# to the messages endpoint. We refresh _last_inbound_wamid_by_chat on
# every accepted inbound message so the gateway can call send_typing()
# without threading event.message_id through the base contract.


class TestInboundWamidCache:
    """Cache hygiene: refreshes on accepted inbound, skipped on filtered."""

    @pytest.mark.asyncio
    async def test_accepted_message_populates_cache(self):
        adapter = _make_adapter()
        raw = {
            "from": "15551234567",
            "id": "wamid.AAA",
            "type": "text",
            "text": {"body": "hi"},
        }
        event = await adapter._build_message_event_from_cloud(
            raw, {"15551234567": "Alice"}, {}
        )
        assert event is not None
        assert adapter._last_inbound_wamid_by_chat["15551234567"] == "wamid.AAA"


class TestSendTyping:
    """``send_typing`` outbound — combined read receipt + indicator."""

    @pytest.mark.asyncio
    async def test_send_typing_posts_correct_payload(self):
        adapter = _make_adapter()
        adapter._last_inbound_wamid_by_chat["15551234567"] = "wamid.LATEST"
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(200, {"success": True})
        )

        await adapter.send_typing("15551234567")

        adapter._http_client.post.assert_called_once()
        payload = adapter._http_client.post.call_args.kwargs["json"]
        # Meta's combined endpoint shape
        assert payload["messaging_product"] == "whatsapp"
        assert payload["status"] == "read"
        assert payload["message_id"] == "wamid.LATEST"
        assert payload["typing_indicator"] == {"type": "text"}


    @pytest.mark.asyncio
    async def test_send_typing_stale_message_logged_at_info(self, caplog):
        """Graph error 131009 = wamid > 30 days old. Common after a
        long-quiet conversation — log at INFO so it doesn't pollute
        WARNING-level monitoring dashboards."""
        adapter = _make_adapter()
        adapter._last_inbound_wamid_by_chat["15551234567"] = "wamid.OLD"
        adapter._http_client = MagicMock()
        adapter._http_client.post = AsyncMock(
            return_value=_mock_httpx_response(
                400, {"error": {"code": 131009, "message": "Parameter value is not valid"}}
            )
        )

        with caplog.at_level("INFO"):
            await adapter.send_typing("15551234567")

        assert any(
            "older than 30 days" in rec.message
            for rec in caplog.records
        )


# ---------------------------------------------------------------------------
# Allowlist normalization + env decoupling (salvage follow-up)
# ---------------------------------------------------------------------------

class TestAllowlistNormalization:
    def test_normalize_allow_ids_strips_jid_suffix_and_punctuation(self):
        from gateway.platforms.whatsapp_cloud import WhatsAppCloudAdapter

        ids = {"15551234567@s.whatsapp.net", "+1 (555) 765-4321", "15550000000"}
        normalized = WhatsAppCloudAdapter._normalize_allow_ids(ids)
        assert normalized == {"15551234567", "15557654321", "15550000000"}


class TestBoundedInteractiveState:
    def test_bounded_put_evicts_oldest(self):
        from collections import OrderedDict

        from gateway.platforms.whatsapp_cloud import (
            INTERACTIVE_STATE_CACHE_SIZE,
            WhatsAppCloudAdapter,
        )

        cache: OrderedDict = OrderedDict()
        for i in range(INTERACTIVE_STATE_CACHE_SIZE + 10):
            WhatsAppCloudAdapter._bounded_put(cache, f"id-{i}", "sess")
        assert len(cache) == INTERACTIVE_STATE_CACHE_SIZE
        assert "id-0" not in cache
        assert f"id-{INTERACTIVE_STATE_CACHE_SIZE + 9}" in cache


class TestMediaIdValidation:
    @pytest.mark.asyncio
    async def test_traversal_media_id_refused(self):
        adapter = _make_adapter()
        adapter._http_client = MagicMock()  # would be used if not refused
        path, mime = await adapter._download_media_to_cache("../../etc/passwd")
        assert path is None and mime is None
        adapter._http_client.get.assert_not_called()


class TestReplyContextResolution:
    """The Cloud webhook ``context`` object only carries the quoted message's
    id (and author), never its text. We resolve the text from rich_sent_store,
    which is populated on every inbound message and every outbound send. Without
    a resolved ``reply_to_text`` run.py can't inject the disambiguation prefix,
    so the agent never learns the message was a reply (the user-reported bug).
    """

    @pytest.mark.asyncio
    async def test_reply_to_own_earlier_message_resolves_text(self):
        """User replies to their own earlier message — its text was indexed
        on the earlier inbound, so the reply resolves it."""
        adapter = _make_adapter()
        # First inbound message gets recorded by wamid.
        await adapter._build_message_event_from_cloud(
            {"from": "15551234567", "id": "wamid.PRIOR", "type": "text",
             "text": {"body": "remind me to buy milk"}},
            {"15551234567": "Alice"}, {},
        )
        # Now the user replies to that earlier message.
        event = await adapter._build_message_event_from_cloud(
            {"from": "15551234567", "id": "wamid.REPLY", "type": "text",
             "text": {"body": "did you?"},
             "context": {"id": "wamid.PRIOR", "from": "15551234567"}},
            {"15551234567": "Alice"}, {},
        )
        assert event is not None
        assert event.reply_to_message_id == "wamid.PRIOR"
        assert event.reply_to_text == "remind me to buy milk"
        assert event.reply_to_is_own_message is False  # quoted author == the user


    @pytest.mark.asyncio
    async def test_non_reply_message_has_no_reply_context(self):
        adapter = _make_adapter()
        event = await adapter._build_message_event_from_cloud(
            {"from": "15551234567", "id": "wamid.PLAIN", "type": "text",
             "text": {"body": "hello"}},
            {"15551234567": "Alice"}, {},
        )
        assert event is not None
        assert event.reply_to_message_id is None
        assert event.reply_to_text is None
        assert event.reply_to_is_own_message is False