"""Portable preflight inference uses fixtures only and never installs or starts tools."""

from argparse import Namespace
from pathlib import Path
import sys
from unittest.mock import patch

import pytest

sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "tools/devkit"))
from govoplan_devkit import doctor
from govoplan_devkit.workspace import Project, Repository


def project(tmp_path, checks, *, tools=None, profiles=None):
    return Project(
        "Fixture",
        (Repository("app", tmp_path / "app"), Repository("other", tmp_path / "other")),
        {
            "checks": checks,
            "profiles": profiles
            if profiles is not None
            else {"quick": [item["id"] for item in checks]},
            "tools": tools or {},
        },
    )


def check(identity, executable, *, repos=None, deps=None):
    return {
        "id": identity,
        "argv": [executable, "--version"],
        "cwd": ".",
        "repos": repos or [],
        "deps": deps or [],
    }


def diagnose(tmp_path, configured, *, profile=None, repos=None, versions=None):
    args = Namespace(
        workspace_root=tmp_path,
        project=tmp_path / "not-read.json",
        repo=repos or [],
        profile=profile,
    )
    tools = {"python": sys.executable, "node": "fixture-node", "npm": "fixture-npm"}
    version_map = versions or {
        sys.executable: "Python 3",
        "fixture-node": "unavailable",
        "fixture-npm": "unavailable",
    }
    with (
        patch.object(doctor, "load_project", return_value=configured),
        patch.object(doctor, "resolve_tools", return_value=tools),
        patch.object(
            doctor,
            "tool_version",
            side_effect=lambda executable, _env: version_map[executable],
        ) as probe,
        patch.object(doctor, "inspect_repository", return_value={"errors": []}),
    ):
        result = doctor.diagnose(args)
    return result, probe


def test_python_only_portable_project_does_not_probe_or_block_on_unused_node(tmp_path):
    configured = project(tmp_path, [check("python-test", "{python}")])
    result, probe = diagnose(tmp_path, configured)
    assert result["_exit_code"] == 0
    assert result["required_tools"] == ["python"]
    assert probe.call_count == 1
    assert {
        item["id"] for item in result["checks"] if item["status"] == "not_required"
    } == {"node", "npm"}


def test_selected_profile_excludes_other_profile_tool_requirements(tmp_path):
    configured = project(
        tmp_path,
        [check("py", "{python}"), check("js", "{npm}")],
        profiles={"quick": ["py"], "ui": ["js"]},
    )
    result, _ = diagnose(tmp_path, configured, profile="quick")
    assert result["required_tools"] == ["python"]
    result, _ = diagnose(tmp_path, configured)
    assert result["required_tools"] == ["node", "npm", "python"]
    assert result["_exit_code"] == 1


def test_selected_repository_includes_dependency_tool_requirements(tmp_path):
    configured = project(
        tmp_path,
        [
            check("build", "{npm}", repos=["other"]),
            check("test", "{python}", repos=["app"], deps=["build"]),
        ],
    )
    result, _ = diagnose(tmp_path, configured, repos=["app"])
    assert result["required_tools"] == ["node", "npm", "python"]


def test_unselected_repository_does_not_require_its_tool(tmp_path):
    configured = project(
        tmp_path,
        [check("js", "{npm}", repos=["other"]), check("py", "{python}", repos=["app"])],
    )
    result, _ = diagnose(tmp_path, configured, repos=["app"])
    assert result["required_tools"] == ["python"]


def test_explicit_tool_configuration_declares_indirect_script_dependency(tmp_path):
    configured = project(tmp_path, [check("shell", "sh")], tools={"npm": "fixture-npm"})
    result, _ = diagnose(tmp_path, configured)
    assert result["required_tools"] == ["node", "npm", "python"]
    assert result["_exit_code"] == 1


@pytest.mark.parametrize(
    "executable,expected",
    [
        ("/opt/node/bin/node", ["node", "python"]),
        ("npm", ["node", "npm", "python"]),
        ("npx", ["node", "npm", "python"]),
    ],
)
def test_direct_tool_names_are_inferred(tmp_path, executable, expected):
    result, _ = diagnose(tmp_path, project(tmp_path, [check("test", executable)]))
    assert result["required_tools"] == expected


def test_context_only_project_needs_no_node_and_makes_no_files(tmp_path):
    before = set(tmp_path.iterdir())
    result, _ = diagnose(tmp_path, project(tmp_path, [], profiles={}))
    assert result["required_tools"] == ["python"]
    assert set(tmp_path.iterdir()) == before


def test_missing_profile_is_not_silently_widened(tmp_path):
    with pytest.raises(ValueError, match="does not declare profile"):
        diagnose(tmp_path, project(tmp_path, []), profile="ui")


def test_native_govoplan_still_requires_all_three_tools(tmp_path):
    configured = project(tmp_path, [])
    args = Namespace(workspace_root=tmp_path, project=None, repo=[], profile=None)
    with (
        patch.object(doctor, "load_project", return_value=configured),
        patch.object(
            doctor,
            "resolve_tools",
            return_value={"python": sys.executable, "node": "node", "npm": "npm"},
        ),
        patch.object(
            doctor,
            "tool_version",
            side_effect=lambda executable, _env: (
                "Python" if executable == sys.executable else "unavailable"
            ),
        ),
        patch.object(doctor, "inspect_repository", return_value={"errors": []}),
    ):
        result = doctor.diagnose(args)
    assert result["required_tools"] == ["node", "npm", "python"]
    assert result["_exit_code"] == 1