import uuid
from datetime import datetime, timezone
from types import SimpleNamespace
from unittest.mock import AsyncMock, Mock

import pytest

from app.models.notification import Notification
from app.models.collaboration import CollaborationEditRequest
from app.services import collaboration_service, notification_service, project_reminder_service


def test_generic_notification_table_has_recipient_dedupe_and_state_indexes():
    table = Notification.__table__
    assert table.name == "notifications"
    assert {"study_id", "recipient_id", "category", "action_path", "source_type", "source_id", "read_at", "resolved_at"} <= set(table.columns.keys())
    assert any(constraint.name == "uq_notifications_recipient_dedupe" for constraint in table.constraints)
    assert {index.name for index in table.indexes} >= {
        "ix_notifications_recipient_study_state",
        "ix_notifications_source",
    }


@pytest.mark.asyncio
async def test_recipient_notification_creation_is_deduplicated_per_recipient():
    existing_id = uuid.uuid4()
    new_id = uuid.uuid4()
    result = SimpleNamespace(all=lambda: [existing_id])
    db = SimpleNamespace(scalars=AsyncMock(return_value=result), add=Mock())

    await notification_service.create_recipient_notifications(
        db,
        study_id=uuid.uuid4(),
        recipient_ids=[existing_id, new_id, new_id],
        category="COLLABORATION_EDIT_REQUEST",
        priority="NORMAL",
        title="新的编辑权限申请",
        message="申请编辑文件",
        action_path="/knowledge/collaboration?editRequestFile=file-id",
        source_type="COLLABORATION_EDIT_REQUEST",
        source_id="request-id",
        dedupe_key="collaboration-edit-request:request-id",
    )

    db.add.assert_called_once()
    created = db.add.call_args.args[0]
    assert created.recipient_id == new_id
    assert created.source_id == "request-id"


@pytest.mark.asyncio
async def test_resolving_a_source_closes_every_recipient_notification():
    db = SimpleNamespace(execute=AsyncMock())
    await notification_service.resolve_source_notifications(
        db,
        source_type="COLLABORATION_EDIT_REQUEST",
        source_id="request-id",
    )
    db.execute.assert_awaited_once()
    statement = str(db.execute.await_args.args[0])
    assert "UPDATE notifications" in statement
    assert "source_type" in statement
    assert "source_id" in statement


@pytest.mark.asyncio
async def test_project_risks_are_materialized_into_the_generic_notification_table(monkeypatch):
    study_id = uuid.uuid4()
    user = SimpleNamespace(id=uuid.uuid4(), is_admin=False)
    membership = SimpleNamespace(is_active=True, role_in_study="PM")
    db = SimpleNamespace(commit=AsyncMock())
    sync = AsyncMock()
    monkeypatch.setattr(project_reminder_service.member_crud, "get_member", AsyncMock(return_value=membership))
    monkeypatch.setattr(project_reminder_service, "role_has_api_permission", AsyncMock(return_value=True))
    monkeypatch.setattr(project_reminder_service, "get_cra_site_scope", AsyncMock(return_value=None))
    monkeypatch.setattr(project_reminder_service.ae_crud, "list_ae", AsyncMock(return_value=[object(), object()]))
    monkeypatch.setattr(project_reminder_service.monitoring_issue_crud, "list_issues", AsyncMock(return_value=[object()]))
    monkeypatch.setattr(project_reminder_service.notification_service, "sync_aggregate_notification", sync)

    await project_reminder_service.sync_project_reminders(db, study_id, user)

    assert sync.await_count == 2
    assert sync.await_args_list[0].kwargs["count"] == 2
    assert sync.await_args_list[1].kwargs["count"] == 1
    db.commit.assert_awaited_once()


@pytest.mark.asyncio
async def test_edit_request_notifies_the_active_file_owner_and_managers(monkeypatch):
    study_id = uuid.uuid4()
    file_id = uuid.uuid4()
    owner_id = uuid.uuid4()
    manager_id = uuid.uuid4()
    request_id = uuid.uuid4()
    item = SimpleNamespace(
        id=file_id,
        study_id=study_id,
        owner_id=owner_id,
        title="PK_示例.xlsx",
        allow_edit_request=True,
    )
    user = SimpleNamespace(id=uuid.uuid4(), full_name="周成成", email="member@example.com")
    added = []

    def add(value):
        added.append(value)

    async def flush():
        request = next(value for value in added if isinstance(value, CollaborationEditRequest))
        request.id = request_id
        request.status = "PENDING"
        request.resolved_by = None
        request.resolved_at = None
        request.created_at = datetime.now(timezone.utc)

    db = SimpleNamespace(
        scalar=AsyncMock(return_value=None),
        scalars=AsyncMock(return_value=SimpleNamespace(all=lambda: [owner_id, manager_id])),
        add=Mock(side_effect=add),
        flush=AsyncMock(side_effect=flush),
        commit=AsyncMock(),
        refresh=AsyncMock(),
    )
    notify = AsyncMock()
    monkeypatch.setattr(collaboration_service, "can_edit_file", AsyncMock(return_value=False))
    monkeypatch.setattr(
        collaboration_service.member_crud,
        "get_member",
        AsyncMock(return_value=SimpleNamespace(is_active=True)),
    )
    monkeypatch.setattr(collaboration_service, "_audit", AsyncMock())
    monkeypatch.setattr(collaboration_service.notification_service, "create_recipient_notifications", notify)

    result = await collaboration_service.create_edit_request(db, item, user)

    assert result.id == request_id
    assert set(notify.await_args.kwargs["recipient_ids"]) == {owner_id, manager_id}
    assert notify.await_args.kwargs["action_path"] == f"/knowledge/collaboration?editRequestFile={file_id}"
    assert notify.await_args.kwargs["source_id"] == str(request_id)