"""Test inventory util functions."""
import os
import posixpath
from io import BytesIO

import sphinx.locale
from sphinx.testing.util import SphinxTestApp
from sphinx.util.inventory import InventoryFile

from tests.test_util.intersphinx_data import (
    INVENTORY_V1,
    INVENTORY_V2,
    INVENTORY_V2_NO_VERSION,
)


def test_read_inventory_v1():
    f = BytesIO(INVENTORY_V1)
    invdata = InventoryFile.load(f, '/util', posixpath.join)
    assert invdata['py:module']['module'] == \
        ('foo', '1.0', '/util/foo.html#module-module', '-')
    assert invdata['py:class']['module.cls'] == \
        ('foo', '1.0', '/util/foo.html#module.cls', '-')


def test_read_inventory_v2():
    f = BytesIO(INVENTORY_V2)
    invdata = InventoryFile.load(f, '/util', posixpath.join)

    assert len(invdata['py:module']) == 2
    assert invdata['py:module']['module1'] == \
        ('foo', '2.0', '/util/foo.html#module-module1', 'Long Module desc')
    assert invdata['py:module']['module2'] == \
        ('foo', '2.0', '/util/foo.html#module-module2', '-')
    assert invdata['py:function']['module1.func'][2] == \
        '/util/sub/foo.html#module1.func'
    assert invdata['c:function']['CFunc'][2] == '/util/cfunc.html#CFunc'
    assert invdata['std:term']['a term'][2] == \
        '/util/glossary.html#term-a-term'
    assert invdata['std:term']['a term including:colon'][2] == \
        '/util/glossary.html#term-a-term-including-colon'


def test_read_inventory_v2_not_having_version():
    f = BytesIO(INVENTORY_V2_NO_VERSION)
    invdata = InventoryFile.load(f, '/util', posixpath.join)
    assert invdata['py:module']['module1'] == \
        ('foo', '', '/util/foo.html#module-module1', 'Long Module desc')


def _write_appconfig(dir, language, prefix=None):
    prefix = prefix or language
    os.makedirs(dir / prefix, exist_ok=True)
    (dir / prefix / 'conf.py').write_text(f'language = "{language}"', encoding='utf8')
    (dir / prefix / 'index.rst').write_text('index.rst', encoding='utf8')
    assert sorted(os.listdir(dir / prefix)) == ['conf.py', 'index.rst']
    assert (dir / prefix / 'index.rst').exists()
    return dir / prefix


def _build_inventory(srcdir):
    app = SphinxTestApp(srcdir=srcdir)
    app.build()
    sphinx.locale.translators.clear()
    return app.outdir / 'objects.inv'


def test_inventory_localization(tmp_path):
    # Build an app using Estonian (EE) locale
    srcdir_et = _write_appconfig(tmp_path, "et")
    inventory_et = _build_inventory(srcdir_et)

    # Build the same app using English (US) locale
    srcdir_en = _write_appconfig(tmp_path, "en")
    inventory_en = _build_inventory(srcdir_en)

    # Ensure that the inventory contents differ
    assert inventory_et.read_bytes() != inventory_en.read_bytes()