from dataclasses import dataclass

import pytest

from review_agent.models import Conversation, FileSummaryBatch, WorkflowNotificationRecord
from review_agent.notifications.context import NotificationContext
from review_agent.notifications.dispatcher import dispatch_workflow_notification


pytestmark = pytest.mark.django_db


@dataclass(frozen=True)
class FakeTokenResult:
    ok: bool
    tenant_access_token: str = ""
    error_code: str = ""
    error_message: str = ""


@dataclass(frozen=True)
class FakeSendResult:
    ok: bool
    external_message_id: str = ""
    error_code: str = ""
    error_message: str = ""
    request_duration_ms: int | None = None


def _context(user, batch):
    return NotificationContext(
        workflow_type="file_summary",
        workflow_name="自动汇总",
        workflow_batch_id=batch.pk,
        workflow_batch_no=batch.batch_no,
        workflow_status=batch.status,
        trigger_user_id=user.pk,
        trigger_username=user.username,
        title="自动汇总完成",
        summary_lines=("文件 1 个",),
        next_step="查看汇总",
        result_path=f"/file-summary/{batch.pk}/",
    )


def _batch(django_user_model):
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="飞书")
    batch = FileSummaryBatch.objects.create(
        conversation=conversation,
        user=user,
        batch_no="FS-DISPATCH",
        status=FileSummaryBatch.Status.SUCCESS,
    )
    return user, batch


def test_dispatch_disabled_writes_record_without_api_call(django_user_model, settings, monkeypatch):
    user, batch = _batch(django_user_model)
    settings.FEISHU_NOTIFY_ENABLED = False

    def fail_call(*args, **kwargs):
        raise AssertionError("should not call external service")

    monkeypatch.setattr("review_agent.notifications.dispatcher.send_personal_message", fail_call)

    record = dispatch_workflow_notification(_context(user, batch))

    assert record.send_status == WorkflowNotificationRecord.SendStatus.DISABLED
    assert record.channel == WorkflowNotificationRecord.Channel.DISABLED


def test_dispatch_success_writes_success_record(django_user_model, settings, monkeypatch):
    user, batch = _batch(django_user_model)
    settings.FEISHU_NOTIFY_ENABLED = True
    settings.FEISHU_DEFAULT_USER_OPEN_ID = "ou_xxx"
    monkeypatch.setattr(
        "review_agent.notifications.dispatcher.get_tenant_access_token",
        lambda: FakeTokenResult(ok=True, tenant_access_token="token"),
    )
    monkeypatch.setattr(
        "review_agent.notifications.dispatcher.send_personal_message",
        lambda **kwargs: FakeSendResult(ok=True, external_message_id="om_xxx", request_duration_ms=12),
    )

    record = dispatch_workflow_notification(_context(user, batch))

    assert record.send_status == WorkflowNotificationRecord.SendStatus.SUCCESS
    assert record.external_message_id == "om_xxx"
    assert record.sent_at is not None


def test_dispatch_existing_success_skips_api(django_user_model, settings, monkeypatch):
    user, batch = _batch(django_user_model)
    settings.FEISHU_NOTIFY_ENABLED = True
    context = _context(user, batch)
    existing = WorkflowNotificationRecord.objects.create(
        workflow_type=context.workflow_type,
        workflow_batch_id=context.workflow_batch_id,
        workflow_batch_no=context.workflow_batch_no,
        workflow_status=context.workflow_status,
        dedupe_key=context.dedupe_key,
        trigger_user=user,
        channel=WorkflowNotificationRecord.Channel.FEISHU_API,
        send_status=WorkflowNotificationRecord.SendStatus.SUCCESS,
        message_title=context.title,
    )

    def fail_call(*args, **kwargs):
        raise AssertionError("duplicate should not call API")

    monkeypatch.setattr("review_agent.notifications.dispatcher.send_personal_message", fail_call)

    assert dispatch_workflow_notification(context).pk == existing.pk


def test_dispatch_existing_failed_allows_retry(django_user_model, settings, monkeypatch):
    user, batch = _batch(django_user_model)
    settings.FEISHU_NOTIFY_ENABLED = True
    settings.FEISHU_DEFAULT_USER_OPEN_ID = "ou_xxx"
    context = _context(user, batch)
    WorkflowNotificationRecord.objects.create(
        workflow_type=context.workflow_type,
        workflow_batch_id=context.workflow_batch_id,
        workflow_batch_no=context.workflow_batch_no,
        workflow_status=context.workflow_status,
        dedupe_key=context.dedupe_key,
        trigger_user=user,
        channel=WorkflowNotificationRecord.Channel.FEISHU_API,
        send_status=WorkflowNotificationRecord.SendStatus.FAILED,
        message_title=context.title,
    )
    monkeypatch.setattr(
        "review_agent.notifications.dispatcher.get_tenant_access_token",
        lambda: FakeTokenResult(ok=True, tenant_access_token="token"),
    )
    monkeypatch.setattr(
        "review_agent.notifications.dispatcher.send_personal_message",
        lambda **kwargs: FakeSendResult(ok=True, external_message_id="om_retry"),
    )

    record = dispatch_workflow_notification(context)

    assert record.send_status == WorkflowNotificationRecord.SendStatus.SUCCESS
    assert WorkflowNotificationRecord.objects.filter(dedupe_key=context.dedupe_key).count() == 2


def test_dispatch_token_failure_writes_failed(django_user_model, settings, monkeypatch):
    user, batch = _batch(django_user_model)
    settings.FEISHU_NOTIFY_ENABLED = True
    settings.FEISHU_DEFAULT_USER_OPEN_ID = "ou_xxx"
    monkeypatch.setattr(
        "review_agent.notifications.dispatcher.get_tenant_access_token",
        lambda: FakeTokenResult(ok=False, error_code="token_error", error_message="bad secret"),
    )

    record = dispatch_workflow_notification(_context(user, batch))

    assert record.send_status == WorkflowNotificationRecord.SendStatus.FAILED
    assert record.error_code == "token_error"