import json

from django.utils import timezone
import pytest

from review_agent.models import FeishuAccessTokenCache
from review_agent.notifications.context import NotificationContext
from review_agent.notifications.feishu_message_api import send_personal_message
from review_agent.notifications.feishu_token import app_id_hash, get_tenant_access_token
from review_agent.notifications.message_builder import build_feishu_post_message
from review_agent.notifications.recipient import resolve_configured_personal_recipient


pytestmark = pytest.mark.django_db


class FakeResponse:
    def __init__(self, payload, status_code=200):
        self.payload = payload
        self.status_code = status_code
        self.text = json.dumps(payload, ensure_ascii=False)

    def json(self):
        return self.payload


def test_token_service_fetches_and_caches(monkeypatch, settings):
    settings.FEISHU_APP_ID = "cli_a"
    settings.FEISHU_APP_SECRET = "secret"
    calls = []

    def fake_post(*args, **kwargs):
        calls.append(kwargs)
        return FakeResponse({"code": 0, "tenant_access_token": "tenant-token", "expire": 7200})

    monkeypatch.setattr("review_agent.notifications.feishu_token.httpx.post", fake_post)

    first = get_tenant_access_token()
    second = get_tenant_access_token()

    assert first.ok
    assert second.tenant_access_token == "tenant-token"
    assert len(calls) == 1
    assert FeishuAccessTokenCache.objects.get(app_id_hash=app_id_hash("cli_a")).is_valid()


def test_token_service_refreshes_expired_cache(monkeypatch, settings):
    settings.FEISHU_APP_ID = "cli_a"
    settings.FEISHU_APP_SECRET = "secret"
    FeishuAccessTokenCache.objects.create(
        app_id_hash=app_id_hash("cli_a"),
        tenant_access_token="old",
        expires_at=timezone.now() - timezone.timedelta(minutes=1),
    )

    monkeypatch.setattr(
        "review_agent.notifications.feishu_token.httpx.post",
        lambda *args, **kwargs: FakeResponse({"code": 0, "tenant_access_token": "new", "expire": 7200}),
    )

    assert get_tenant_access_token().tenant_access_token == "new"


def test_token_service_returns_error_for_api_failure(monkeypatch, settings):
    settings.FEISHU_APP_ID = "cli_a"
    settings.FEISHU_APP_SECRET = "secret"
    monkeypatch.setattr(
        "review_agent.notifications.feishu_token.httpx.post",
        lambda *args, **kwargs: FakeResponse({"code": 1, "msg": "bad secret"}),
    )

    result = get_tenant_access_token()

    assert not result.ok
    assert result.error_message == "bad secret"


def test_recipient_prefers_open_id(settings):
    settings.FEISHU_DEFAULT_USER_OPEN_ID = "ou_xxx"
    settings.FEISHU_DEFAULT_USER_ID = "user_xxx"
    settings.FEISHU_DEFAULT_TARGET_NAME = "负责人"

    target = resolve_configured_personal_recipient()

    assert target.ok
    assert target.identifier_type == "open_id"
    assert target.identifier_value == "ou_xxx"


def test_recipient_uses_user_id_when_open_id_missing(settings):
    settings.FEISHU_DEFAULT_USER_OPEN_ID = ""
    settings.FEISHU_DEFAULT_USER_ID = "user_xxx"

    target = resolve_configured_personal_recipient()

    assert target.ok
    assert target.identifier_type == "user_id"


def test_recipient_missing(settings):
    settings.FEISHU_DEFAULT_USER_OPEN_ID = ""
    settings.FEISHU_DEFAULT_USER_ID = ""

    target = resolve_configured_personal_recipient()

    assert not target.ok
    assert target.error_code == "recipient_missing"


def test_build_feishu_post_message_contains_summary(settings):
    settings.PUBLIC_BASE_URL = "http://example.test"
    settings.FEISHU_DEFAULT_USER_OPEN_ID = "ou_xxx"
    target = resolve_configured_personal_recipient()
    context = NotificationContext(
        workflow_type="file_summary",
        workflow_name="自动汇总",
        workflow_batch_id=1,
        workflow_batch_no="FS-001",
        workflow_status="success",
        trigger_user_id=1,
        trigger_username="owner",
        title="自动汇总完成",
        summary_lines=("文件 3 个", "异常 0 个"),
        next_step="查看汇总结果",
        result_path="/summary/1/",
    )

    payload = build_feishu_post_message(context, target)

    assert payload["receive_id"] == "ou_xxx"
    content = json.loads(payload["content"])
    assert content["zh_cn"]["title"] == "自动汇总完成"
    assert "http://example.test/summary/1/" in payload["content"]


def test_send_personal_message_success(monkeypatch, settings):
    settings.FEISHU_MESSAGE_API_URL = "http://feishu/messages"
    requests = []

    def fake_post(*args, **kwargs):
        requests.append(kwargs)
        return FakeResponse({"code": 0, "data": {"message_id": "om_xxx"}})

    monkeypatch.setattr("review_agent.notifications.feishu_message_api.httpx.post", fake_post)

    result = send_personal_message(
        tenant_access_token="token",
        receive_id_type="open_id",
        payload={"receive_id": "ou_xxx"},
    )

    assert result.ok
    assert result.external_message_id == "om_xxx"
    assert requests[0]["headers"]["Authorization"] == "Bearer token"


def test_send_personal_message_api_error(monkeypatch, settings):
    settings.FEISHU_MESSAGE_API_URL = "http://feishu/messages"
    monkeypatch.setattr(
        "review_agent.notifications.feishu_message_api.httpx.post",
        lambda *args, **kwargs: FakeResponse({"code": 230001, "msg": "bad receive_id"}),
    )

    result = send_personal_message(
        tenant_access_token="token",
        receive_id_type="open_id",
        payload={"receive_id": "bad"},
    )

    assert not result.ok
    assert result.error_code == "230001"


def test_send_personal_message_refreshes_token_once(monkeypatch, settings):
    settings.FEISHU_MESSAGE_API_URL = "http://feishu/messages"
    settings.FEISHU_APP_ID = "cli_a"
    settings.FEISHU_APP_SECRET = "secret"
    calls = {"message": 0}

    def fake_message_post(*args, **kwargs):
        calls["message"] += 1
        if calls["message"] == 1:
            return FakeResponse({"code": 99991663, "msg": "token expired"})
        return FakeResponse({"code": 0, "data": {"message_id": "om_retry"}})

    monkeypatch.setattr("review_agent.notifications.feishu_message_api.httpx.post", fake_message_post)
    monkeypatch.setattr(
        "review_agent.notifications.feishu_token.httpx.post",
        lambda *args, **kwargs: FakeResponse({"code": 0, "tenant_access_token": "fresh", "expire": 7200}),
    )

    result = send_personal_message(
        tenant_access_token="stale",
        receive_id_type="open_id",
        payload={"receive_id": "ou_xxx"},
    )

    assert result.ok
    assert result.refreshed_token
    assert calls["message"] == 2