from __future__ import annotations

from datetime import UTC, datetime
import unittest

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

from govoplan_access.backend.db import models as access_models  # noqa: F401
from govoplan_calendar.backend.db.models import CalendarOutboxOperation, CalendarSyncSource
from govoplan_calendar.backend.manifest import (
    CALDAV_PROVIDER_ID,
    EWS_PROVIDER_ID,
    GRAPH_PROVIDER_ID,
    ICS_PROVIDER_ID,
    manifest,
)
from govoplan_calendar.backend.provider_state import (
    caldav_provider_states,
    ews_provider_states,
    graph_provider_states,
    ics_provider_states,
)
from govoplan_calendar.backend.schemas import (
    CalendarCalDavSourceCreateRequest,
    CalendarCollectionCreateRequest,
)
from govoplan_calendar.backend.service import create_caldav_source, create_calendar
from govoplan_core.core.provider_governance import ExternalProviderStateContext
from govoplan_core.db.base import Base
from govoplan_core.tenancy.scope import create_scope_tables
from govoplan_tenancy.backend.db.models import Tenant


class CalendarProviderStateTests(unittest.TestCase):
    def setUp(self) -> None:
        self.engine = create_engine("sqlite+pysqlite:///:memory:", future=True)
        create_scope_tables(self.engine)
        Base.metadata.create_all(self.engine)
        self.Session = sessionmaker(bind=self.engine, expire_on_commit=False)
        self.session = self.Session()
        self.session.add(Tenant(id="tenant-1", slug="tenant-1", name="Tenant"))
        self.calendar = create_calendar(
            self.session,
            tenant_id="tenant-1",
            user_id=None,
            payload=CalendarCollectionCreateRequest(name="Remote"),
        )
        self.source = create_caldav_source(
            self.session,
            tenant_id="tenant-1",
            user_id=None,
            payload=CalendarCalDavSourceCreateRequest(
                calendar_id=self.calendar.id,
                collection_url="https://dav.example.test/cal",
            ),
        )
        self.session.commit()

    def tearDown(self) -> None:
        self.session.close()
        self.engine.dispose()

    def test_state_projects_health_freshness_and_unresolved_outcomes(self) -> None:
        self.source.last_status = "ok"
        self.source.last_synced_at = datetime.now(UTC)
        self.session.flush()

        healthy = caldav_provider_states(
            ExternalProviderStateContext(
                session=self.session,
                tenant_id="tenant-1",
            )
        )[0]

        self.assertEqual("healthy", healthy.health)
        self.assertEqual("current", healthy.freshness)
        self.assertEqual("clear", healthy.conflict)
        self.assertEqual("ready", healthy.recovery)
        self.assertEqual(
            f"calendar:sync-source:{self.source.id}",
            healthy.binding_ref,
        )
        self.assertNotIn("dav.example.test", str(healthy.to_dict()))

        self.session.add(
            CalendarOutboxOperation(
                tenant_id="tenant-1",
                source_id=self.source.id,
                operation_kind="put",
                resource_href="event.ics",
                idempotency_key="a" * 64,
                status="conflict",
            )
        )
        self.session.flush()

        conflicted = caldav_provider_states(
            ExternalProviderStateContext(
                session=self.session,
                tenant_id="tenant-1",
            )
        )[0]

        self.assertEqual("warning", conflicted.health)
        self.assertEqual("pending", conflicted.conflict)
        self.assertEqual("attention", conflicted.recovery)

    def test_state_is_tenant_bounded_and_manifest_registered(self) -> None:
        self.assertEqual(
            (),
            caldav_provider_states(
                ExternalProviderStateContext(
                    session=self.session,
                    tenant_id="tenant-2",
                )
            ),
        )
        self.assertEqual(
            {CALDAV_PROVIDER_ID, ICS_PROVIDER_ID, GRAPH_PROVIDER_ID, EWS_PROVIDER_ID},
            {item.id for item in manifest.external_providers},
        )
        self.assertEqual(
            {CALDAV_PROVIDER_ID, ICS_PROVIDER_ID, GRAPH_PROVIDER_ID, EWS_PROVIDER_ID},
            {
                item.provider_id
                for item in manifest.external_provider_state_providers
            },
        )

    def test_read_only_sources_have_distinct_secret_free_provider_state(self) -> None:
        now = datetime.now(UTC)
        sources = (
            ("ics", "https://feeds.example.test/team.ics", "none"),
            ("graph", "https://graph.microsoft.com/v1.0/me/calendar/events", "bearer"),
            ("ews", "https://exchange.example.test/EWS/Exchange.asmx", "basic"),
        )
        for source_kind, collection_url, auth_type in sources:
            self.session.add(
                CalendarSyncSource(
                    tenant_id="tenant-1",
                    calendar_id=self.calendar.id,
                    source_kind=source_kind,
                    collection_url=collection_url,
                    auth_type=auth_type,
                    sync_enabled=True,
                    sync_direction="read_only",
                    last_status="ok",
                    last_synced_at=now,
                )
            )
        self.session.flush()

        states = (
            ics_provider_states(
                ExternalProviderStateContext(session=self.session, tenant_id="tenant-1")
            )[0],
            graph_provider_states(
                ExternalProviderStateContext(session=self.session, tenant_id="tenant-1")
            )[0],
            ews_provider_states(
                ExternalProviderStateContext(session=self.session, tenant_id="tenant-1")
            )[0],
        )

        self.assertTrue(all(item.authority_mode == "external_mirror" for item in states))
        self.assertTrue(all(item.health == "healthy" for item in states))
        rendered = str([item.to_dict() for item in states])
        self.assertNotIn("feeds.example.test", rendered)
        self.assertNotIn("exchange.example.test", rendered)


if __name__ == "__main__":
    unittest.main()