from sqlalchemy.exc import IntegrityError

from l4d2web.db import init_db, session_scope
from l4d2web.models import (
    GlobalOverlayItem,
    GlobalOverlayItemFile,
    GlobalOverlaySource,
    Job,
    Overlay,
    User,
)


def test_system_job_allows_null_user_id(tmp_path, monkeypatch):
    monkeypatch.setenv("DATABASE_URL", f"sqlite:///{tmp_path/'models.db'}")
    init_db()

    with session_scope() as db:
        job = Job(
            user_id=None,
            server_id=None,
            overlay_id=None,
            operation="refresh_global_overlays",
        )
        db.add(job)
        db.flush()
        assert job.id is not None
        assert job.user_id is None


def test_global_overlay_source_uniqueness(tmp_path, monkeypatch):
    monkeypatch.setenv("DATABASE_URL", f"sqlite:///{tmp_path/'sources.db'}")
    init_db()

    with session_scope() as db:
        overlay = Overlay(
            name="l4d2center-maps", path="1", type="l4d2center_maps", user_id=None
        )
        db.add(overlay)
        db.flush()
        db.add(
            GlobalOverlaySource(
                overlay_id=overlay.id,
                source_key="l4d2center-maps",
                source_type="l4d2center_csv",
                source_url="https://l4d2center.com/maps/servers/index.csv",
            )
        )

    try:
        with session_scope() as db:
            other = Overlay(
                name="cedapug-maps", path="2", type="cedapug_maps", user_id=None
            )
            db.add(other)
            db.flush()
            db.add(
                GlobalOverlaySource(
                    overlay_id=other.id,
                    source_key="l4d2center-maps",
                    source_type="l4d2center_csv",
                    source_url="https://example.invalid/duplicate",
                )
            )
    except IntegrityError:
        pass
    else:
        raise AssertionError("duplicate source_key must fail")


def test_global_overlay_items_and_files_are_unique_per_parent(tmp_path, monkeypatch):
    monkeypatch.setenv("DATABASE_URL", f"sqlite:///{tmp_path/'items.db'}")
    init_db()

    with session_scope() as db:
        overlay = Overlay(name="cedapug-maps", path="1", type="cedapug_maps", user_id=None)
        db.add(overlay)
        db.flush()
        source = GlobalOverlaySource(
            overlay_id=overlay.id,
            source_key="cedapug-maps",
            source_type="cedapug_custom_page",
            source_url="https://cedapug.com/custom",
        )
        db.add(source)
        db.flush()
        item = GlobalOverlayItem(
            source_id=source.id,
            item_key="FatalFreight.zip",
            display_name="Fatal Freight",
            download_url="https://cedapug.com/maps/FatalFreight.zip",
            expected_vpk_name="FatalFreight.vpk",
        )
        db.add(item)
        db.flush()
        db.add(
            GlobalOverlayItemFile(
                item_id=item.id,
                vpk_name="FatalFreight.vpk",
                cache_path="cedapug-maps/vpks/FatalFreight.vpk",
                size=123,
                md5="",
            )
        )
        item_id = item.id

    try:
        with session_scope() as db:
            source = db.query(GlobalOverlaySource).filter_by(source_key="cedapug-maps").one()
            db.add(
                GlobalOverlayItem(
                    source_id=source.id,
                    item_key="FatalFreight.zip",
                    display_name="Fatal Freight duplicate",
                    download_url="https://cedapug.com/maps/FatalFreight.zip",
                    expected_vpk_name="FatalFreight.vpk",
                )
            )
    except IntegrityError:
        pass
    else:
        raise AssertionError("duplicate item_key per source must fail")

    try:
        with session_scope() as db:
            db.add(
                GlobalOverlayItemFile(
                    item_id=item_id,
                    vpk_name="FatalFreight.vpk",
                    cache_path="cedapug-maps/vpks/FatalFreight-copy.vpk",
                    size=456,
                    md5="",
                )
            )
    except IntegrityError:
        pass
    else:
        raise AssertionError("duplicate vpk_name per item must fail")


def test_normal_user_rows_still_require_real_users(tmp_path, monkeypatch):
    monkeypatch.setenv("DATABASE_URL", f"sqlite:///{tmp_path/'users.db'}")
    init_db()

    with session_scope() as db:
        user = User(username="alice", password_digest="digest", admin=False)
        db.add(user)
        db.flush()
        job = Job(user_id=user.id, server_id=None, operation="install", state="queued")
        db.add(job)
        db.flush()

        assert job.id is not None
        assert job.user_id == user.id