from types import SimpleNamespace
from unittest.mock import AsyncMock
from uuid import uuid4

from fastapi.testclient import TestClient

from tests.conftest import build_test_app, install_stub, load_module_from_path


class DummyChangeSet:
    def __init__(self, operations=None):
        if operations is None:
            self.operations = []
        elif isinstance(operations, dict):
            self.operations = [operations]
        else:
            self.operations = operations


def _load_project_module(monkeypatch):
    install_stub(monkeypatch, "app.services", package=True)
    install_stub(
        monkeypatch,
        "app.services.project_info",
        {},
    )
    install_stub(
        monkeypatch,
        "app.services.tjnetwork",
        {
            "ChangeSet": DummyChangeSet,
            "list_project": lambda: ["demo"],
            "have_project": lambda network: network == "demo",
            "create_project": lambda network: None,
            "delete_project": lambda network: None,
            "is_project_open": lambda network: False,
            "open_project": lambda network: None,
            "close_project": lambda network: None,
            "copy_project": lambda source, target: None,
            "import_inp": lambda network, cs: {"ok": True},
            "export_inp": lambda network, version: DummyChangeSet({"kind": "export"}),
            "read_inp": lambda network, inp: True,
            "dump_inp": lambda network, inp: True,
            "get_all_vertices": lambda network: [],
            "get_all_scada_elements": lambda network: [],
            "get_all_district_metering_areas": lambda network: [],
            "get_all_service_areas": lambda network: [],
            "get_all_virtual_districts": lambda network: [],
            "get_extension_data": lambda network, key: None,
            "convert_inp_v3_to_v2": lambda inp: DummyChangeSet({"inp": inp}),
        },
    )
    install_stub(
        monkeypatch,
        "app.auth.project_dependencies",
        {"get_metadata_repository": lambda: None},
    )
    install_stub(
        monkeypatch,
        "app.infra.db.postgresql.database",
        {"get_database_instance": lambda network: None},
    )
    install_stub(
        monkeypatch,
        "app.infra.db.timescaledb.database",
        {"get_database_instance": lambda network: None},
    )
    return load_module_from_path(
        "tests_project_endpoints_module",
        "app/api/v1/endpoints/project.py",
    )


def test_project_info_returns_404_when_missing(monkeypatch):
    module = _load_project_module(monkeypatch)
    repo = SimpleNamespace(get_project_detail_by_code=AsyncMock(return_value=None))
    app = build_test_app(module.router, "/api/v1")
    app.dependency_overrides[module.get_metadata_repository] = lambda: repo
    client = TestClient(app)

    response = client.get("/api/v1/project_info/", params={"network": "missing"})

    assert response.status_code == 404
    assert response.json()["detail"] == "Project missing not found"


def test_project_info_returns_geoserver_payload(monkeypatch):
    module = _load_project_module(monkeypatch)
    detail = SimpleNamespace(
        project_id=uuid4(),
        name="Demo Project",
        code="demo",
        description="desc",
        gs_workspace="ws",
        map_extent={"xmin": 1, "ymin": 2, "xmax": 3, "ymax": 4},
        status="active",
        geoserver=SimpleNamespace(
            gs_base_url="http://gs",
            gs_admin_user="admin",
            gs_datastore_name="store",
            default_extent={"xmin": 1, "ymin": 2, "xmax": 3, "ymax": 4},
            srid=4326,
        ),
    )
    repo = SimpleNamespace(get_project_detail_by_code=AsyncMock(return_value=detail))
    app = build_test_app(module.router, "/api/v1")
    app.dependency_overrides[module.get_metadata_repository] = lambda: repo
    client = TestClient(app)

    response = client.get("/api/v1/project_info/", params={"network": "demo"})

    assert response.status_code == 200
    payload = response.json()
    assert payload["code"] == "demo"
    assert payload["geoserver"]["gs_base_url"] == "http://gs"


def test_open_project_returns_network_even_when_db_connection_fails(monkeypatch):
    module = _load_project_module(monkeypatch)
    called = []

    monkeypatch.setattr(module, "open_project", lambda network: called.append(network))

    async def failing_get_pg_db(network):
        raise RuntimeError("db down")

    monkeypatch.setattr(module, "get_pg_db", failing_get_pg_db)
    client = TestClient(build_test_app(module.router, "/api/v1"))

    response = client.post("/api/v1/openproject/", params={"network": "demo"})

    assert response.status_code == 200
    assert response.json() == "demo"
    assert called == ["demo"]


def test_project_lock_lifecycle(monkeypatch):
    module = _load_project_module(monkeypatch)
    module.lockedPrjs.clear()
    client = TestClient(build_test_app(module.router, "/api/v1"))

    first_lock = client.post("/api/v1/lockproject/", params={"network": "demo"})
    second_lock = client.post("/api/v1/lockproject/", params={"network": "demo"})
    locked_by_me = client.get("/api/v1/isprojectlockedbyme/", params={"network": "demo"})
    unlock = client.post("/api/v1/unlockproject/", params={"network": "demo"})
    locked = client.get("/api/v1/isprojectlocked/", params={"network": "demo"})

    assert first_lock.json() == 0
    assert second_lock.json() == 1
    assert locked_by_me.json() is True
    assert unlock.json() is True
    assert locked.json() is False