# -*- coding: utf-8 -*-
# Copyright (c) 2025 relakkes@gmail.com
#
# This file is part of MediaCrawler project.
# Repository: https://github.com/NanmiCoder/MediaCrawler/blob/main/tests/test_interpreter.py
# GitHub: https://github.com/NanmiCoder
# Licensed under NON-COMMERCIAL LEARNING LICENSE 1.1
#
# 声明：本代码仅供学习和研究目的使用。使用者应遵守以下原则：
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"""Tests for the subprocess interpreter resolver."""

import sys
from pathlib import Path

from api.services.interpreter import (
    describe_interpreter,
    resolve_python_cmd,
    venv_python_path,
)


def _make_venv(root: Path) -> Path:
    """Create a fake venv layout and return the expected python path."""
    exe = venv_python_path(root)
    exe.parent.mkdir(parents=True, exist_ok=True)
    exe.write_text("", encoding="utf-8")
    return exe


def test_prefers_uv_when_available(monkeypatch, tmp_path):
    monkeypatch.setattr("shutil.which", lambda name: "/usr/bin/uv" if name == "uv" else None)
    _make_venv(tmp_path)

    # uv wins even when a venv exists, matching the upstream documented workflow.
    assert resolve_python_cmd(tmp_path) == ["uv", "run", "python"]


def test_falls_back_to_project_venv(monkeypatch, tmp_path):
    monkeypatch.setattr("shutil.which", lambda name: None)
    exe = _make_venv(tmp_path)

    assert resolve_python_cmd(tmp_path) == [str(exe)]


def test_falls_back_to_current_interpreter(monkeypatch, tmp_path):
    monkeypatch.setattr("shutil.which", lambda name: None)

    # No uv, no venv anywhere under the given root.
    assert resolve_python_cmd(tmp_path) == [sys.executable]


def test_describe_is_human_readable(monkeypatch, tmp_path):
    monkeypatch.setattr("shutil.which", lambda name: None)
    _make_venv(tmp_path)
    assert "virtualenv" in describe_interpreter(tmp_path)

    monkeypatch.setattr("shutil.which", lambda name: "/usr/bin/uv" if name == "uv" else None)
    assert describe_interpreter(tmp_path) == "uv run python"