from __future__ import annotations

import pytest

from backend.tests.test_mcp_hub_governed_topology import _legacy_target, _load_controller


LEGACY_SOURCE = "/srv/example/appdata/itworx-mcp-hub/deployment/repository"


def observed_legacy_target(controller):
    project = _legacy_target(controller)
    project.pop("exact_source")
    project.pop("verify_oci_revision")
    project["source_dir"] = LEGACY_SOURCE
    project["compose_dir"] = "infrastructure/compose"
    project["compose_files"] = list(controller.MCP_HUB_COMPOSE_FILES[:3])
    project["env_source"] = "/srv/example/appdata/itworx-mcp-hub/deploy.env"
    return project


@pytest.mark.parametrize("legacy", [False, True])
def test_observed_hub_legacy_source_is_only_normalized_in_memory(legacy):
    controller = _load_controller()
    project = observed_legacy_target(controller) if legacy else _legacy_target(controller)
    canonical = (controller.EXACT_SOURCE_ROOT / "itworx-mcp-hub").as_posix()
    original = LEGACY_SOURCE if legacy else canonical
    project["source_dir"] = original

    effective = controller.effective_mcp_hub_project(controller.MCP_HUB_REPOSITORY, project)

    assert effective["source_dir"] == canonical
    assert project["source_dir"] == original
    assert effective["containers"] == list(controller.MCP_HUB_CONTAINERS)
    assert effective["compose_files"] == list(controller.MCP_HUB_COMPOSE_FILES)
    assert effective["_mcp_hub_contract"] == controller.MCP_HUB_TOPOLOGY_CONTRACT


def test_observed_legacy_registry_omissions_are_upgraded_only_in_memory():
    controller = _load_controller()
    project = observed_legacy_target(controller)
    effective = controller.effective_mcp_hub_project(controller.MCP_HUB_REPOSITORY, project)
    assert effective["exact_source"] is True
    assert effective["verify_oci_revision"] is True
    assert "exact_source" not in project
    assert "verify_oci_revision" not in project


@pytest.mark.parametrize(
    "field,value",
    [
        ("source_dir", "/mnt/cache/appdata/gitea-deploy-runners/sources/itworx-mcp-hub"),
        ("compose_dir", "."),
        ("compose_files", ["other.yml"]),
        ("env_source", "/tmp/deploy.env"),
        ("exact_source", None),
        ("exact_source", False),
        ("exact_source", True),
        ("verify_oci_revision", None),
        ("verify_oci_revision", False),
        ("verify_oci_revision", True),
        ("clean_untracked_paths", None),
        ("clean_untracked_paths", False),
        ("clean_untracked_paths", []),
        ("clean_untracked_paths", ["local.env"]),
    ],
)
def test_legacy_registry_omissions_do_not_widen_other_target_shapes(field, value):
    controller = _load_controller()
    project = observed_legacy_target(controller)
    project[field] = value
    with pytest.raises(controller.DeployError, match="exact legacy 15-container contract"):
        controller.effective_mcp_hub_project(controller.MCP_HUB_REPOSITORY, project)


@pytest.mark.parametrize("field", ["exact_source", "verify_oci_revision"])
def test_fully_declared_legacy_target_rejects_explicit_false_verification(field):
    controller = _load_controller()
    project = observed_legacy_target(controller)
    project[field] = False
    with pytest.raises(controller.DeployError, match="exact legacy 15-container contract"):
        controller.effective_mcp_hub_project(controller.MCP_HUB_REPOSITORY, project)


@pytest.mark.parametrize(
    "source",
    [
        None,
        True,
        {},
        LEGACY_SOURCE + "/",
        LEGACY_SOURCE + "/../repository",
        "/mnt/cache/appdata/itworx-mcp-hub/deployment/repository",
        "/srv/example/appdata/another-hub/deployment/repository",
        "/tmp/repository",
    ],
)
def test_hub_legacy_source_compatibility_rejects_other_spellings_and_types(source):
    controller = _load_controller()
    project = _legacy_target(controller)
    project["source_dir"] = source

    with pytest.raises(controller.DeployError, match="exact legacy 15-container contract"):
        controller.effective_mcp_hub_project(controller.MCP_HUB_REPOSITORY, project)