import json
import os
import pytest

from pyra.plugins.install import (
    get_bundled_plugins_dir,
    install_bundled_plugin,
    list_bundled_plugins,
    read_manifest,
)


def test_get_bundled_plugins_dir_name():
    d = get_bundled_plugins_dir()
    assert d.name == "bundled_plugins"
    assert d.parent.name == "pyra"


def test_list_bundled_plugins_empty_dir(tmp_path):
    bundled = tmp_path / "bundled"
    bundled.mkdir()
    assert list_bundled_plugins(bundled) == []


def test_list_bundled_plugins_missing_dir(tmp_path):
    assert list_bundled_plugins(tmp_path / "nonexistent") == []


def test_list_bundled_plugins_with_manifest(tmp_path):
    bundled = tmp_path / "bundled"
    plugin = bundled / "myplugin"
    plugin.mkdir(parents=True)
    (plugin / "manifest.json").write_text('{"name": "myplugin", "version": "1.0"}')
    assert list_bundled_plugins(bundled) == ["myplugin"]


def test_list_bundled_plugins_without_manifest(tmp_path):
    bundled = tmp_path / "bundled"
    (bundled / "myplugin").mkdir(parents=True)
    assert list_bundled_plugins(bundled) == []


def test_list_bundled_plugins_sorted(tmp_path):
    bundled = tmp_path / "bundled"
    for name in ["zebra", "alpha", "mango"]:
        p = bundled / name
        p.mkdir(parents=True)
        (p / "manifest.json").write_text("{}")
    result = list_bundled_plugins(bundled)
    assert result == sorted(result)


def test_read_manifest_valid(tmp_path):
    plugin_dir = tmp_path / "myplugin"
    plugin_dir.mkdir()
    (plugin_dir / "manifest.json").write_text(
        json.dumps({"name": "myplugin", "version": "1.0.0", "description": "Test plugin"})
    )
    manifest = read_manifest(plugin_dir)
    assert manifest["name"] == "myplugin"
    assert manifest["version"] == "1.0.0"
    assert manifest["description"] == "Test plugin"


def test_read_manifest_missing(tmp_path):
    plugin_dir = tmp_path / "myplugin"
    plugin_dir.mkdir()
    assert read_manifest(plugin_dir) == {}


def test_install_bundled_plugin_not_found(tmp_path):
    bundled = tmp_path / "bundled"
    bundled.mkdir()
    plugins = tmp_path / "plugins"
    plugins.mkdir()
    with pytest.raises(FileNotFoundError):
        install_bundled_plugin("nonexistent", bundled, plugins)


def test_install_bundled_plugin_missing_manifest(tmp_path):
    bundled = tmp_path / "bundled"
    (bundled / "myplugin").mkdir(parents=True)
    (bundled / "myplugin" / "plugin.py").write_text("# stub")
    plugins = tmp_path / "plugins"
    plugins.mkdir()
    with pytest.raises(FileNotFoundError):
        install_bundled_plugin("myplugin", bundled, plugins)


def test_install_bundled_plugin_success(tmp_path):
    bundled = tmp_path / "bundled"
    src = bundled / "myplugin"
    src.mkdir(parents=True)
    (src / "manifest.json").write_text('{"name": "myplugin", "version": "1.0"}')
    (src / "plugin.py").write_text("# stub plugin")

    plugins = tmp_path / "plugins"
    plugins.mkdir()

    install_bundled_plugin("myplugin", bundled, plugins)

    dest = plugins / "myplugin"
    assert dest.is_dir()
    assert (dest / "manifest.json").exists()
    assert (dest / "plugin.py").exists()
    if os.name != "nt":
        assert oct((dest / "plugin.py").stat().st_mode)[-3:] == "600"


def test_install_bundled_plugin_overwrites(tmp_path):
    bundled = tmp_path / "bundled"
    src = bundled / "myplugin"
    src.mkdir(parents=True)
    (src / "manifest.json").write_text('{"name": "myplugin", "version": "1.0"}')

    plugins = tmp_path / "plugins"
    plugins.mkdir()

    install_bundled_plugin("myplugin", bundled, plugins)
    install_bundled_plugin("myplugin", bundled, plugins)  # second install should not raise
    assert (plugins / "myplugin").is_dir()