from __future__ import annotations

import asyncio

from src.jobs import asset_scanner_job


class _Result:
    def scalar(self):
        return "00000000-0000-0000-0000-000000000001"

    def one(self):
        return 1, True


class _Database:
    async def execute(self, statement, parameters=None):
        return _Result()


class _Context:
    async def __aenter__(self):
        return _Database()

    async def __aexit__(self, exc_type, exc, traceback):
        return False


def test_background_scanner_scopes_every_database_operation(monkeypatch) -> None:
    requested_projects: list[str | None] = []

    def fake_db_context(project_id: str | None = None):
        requested_projects.append(project_id)
        return _Context()

    monkeypatch.setattr("src.db.base.get_db_context", fake_db_context)

    async def exercise_scanner_writes() -> None:
        run_id = await asset_scanner_job._start_discovery_run(
            "cron", ["k8s", "prometheus"], "shallow"
        )
        assert run_id == "00000000-0000-0000-0000-000000000001"

        await asset_scanner_job._finish_discovery_run(
            run_id=run_id,
            status="success",
            total_assets=1,
            new_assets=1,
            modified_assets=0,
            duration_ms=10,
            error=None,
        )
        inserted, modified = await asset_scanner_job._upsert_assets(
            [
                {
                    "asset_key": "host/test",
                    "asset_type": "host",
                    "host": "test",
                    "namespace": None,
                    "name": "test",
                    "metadata": {},
                    "tags": ["source:test"],
                }
            ],
            run_id,
        )
        assert (inserted, modified) == (1, 0)

        written = await asset_scanner_job._upsert_relationships(
            [
                {
                    "from_key": "host/test",
                    "to_key": "monitoring/test",
                    "relationship_type": "monitors",
                }
            ]
        )
        assert written == 1

        await asset_scanner_job._write_coverage_snapshots(run_id)
        await asset_scanner_job._log_aol_asset_discovered(
            run_id=run_id,
            triggered_by="cron",
            total=1,
            new=1,
            modified=0,
            duration_ms=10,
            status="success",
            error=None,
            scope=["k8s", "prometheus", "database_catalog"],
            scan_depth="shallow",
        )

    asyncio.run(exercise_scanner_writes())

    assert requested_projects == ["awoooi"] * 6


def test_database_catalog_collector_reads_metadata_only(monkeypatch) -> None:
    requested_projects: list[str | None] = []

    class CatalogResult:
        def fetchall(self):
            return [
                type(
                    "CatalogRow",
                    (),
                    {
                        "_mapping": {
                            "database_name": "awoooi",
                            "schema_name": "public",
                            "relation_name": "incidents",
                            "relation_kind": "table",
                            "row_security_enabled": True,
                        }
                    },
                )()
            ]

    class CatalogDatabase:
        async def execute(self, statement, parameters=None):
            return CatalogResult()

    class CatalogContext:
        async def __aenter__(self):
            return CatalogDatabase()

        async def __aexit__(self, exc_type, exc, traceback):
            return False

    def fake_db_context(project_id: str | None = None):
        requested_projects.append(project_id)
        return CatalogContext()

    monkeypatch.setattr("src.db.base.get_db_context", fake_db_context)

    assets, relationships = asyncio.run(
        asset_scanner_job._collect_database_catalog_assets()
    )

    assert requested_projects == ["awoooi"]
    assert [asset["asset_type"] for asset in assets] == ["database", "table"]
    assert assets[0]["metadata"]["row_data_read"] is False
    assert assets[1]["metadata"] == {
        "database": "awoooi",
        "schema": "public",
        "relation_kind": "table",
        "row_security_enabled": True,
        "row_data_read": False,
    }
    assert relationships == [
        {
            "from_key": "postgres/relation/awoooi/public/incidents",
            "to_key": "postgres/database/awoooi",
            "relationship_type": "depends_on",
        }
    ]