import base64
import os
import re
import tempfile
import unittest
from unittest.mock import patch

import app as rollcalc_app
from core_presets import CORE_PRESETS, matching_core_presets


class CorePresetTests(unittest.TestCase):
    def test_rendered_web_ui_preset_list_is_unchanged(self):
        expected = [
            ("133", "steel", "133mm Stahl"),
            ("150", "pvc", "150mm PVC"),
            ("168", "pvc", "168mm PVC"),
            ("194", "steel", "194mm Stahl"),
        ]
        credentials = base64.b64encode(b"mtazl:rollcalc").decode("ascii")
        with tempfile.TemporaryDirectory() as temp_dir:
            log_file = os.path.join(temp_dir, "access.json")
            with patch.object(rollcalc_app, "LOG_FILE", log_file):
                response = rollcalc_app.app.test_client().get(
                    "/",
                    headers={"Authorization": f"Basic {credentials}"},
                )

        self.assertEqual(response.status_code, 200)
        rendered = re.findall(
            r'class="core-preset-btn" data-core="([^"]+)" '
            r'data-core-material="([^"]+)">([^<]+)</button>',
            response.get_data(as_text=True),
        )
        self.assertEqual(rendered, expected)
        self.assertEqual(
            [
                (preset.ui_diameter, preset.material, preset.label)
                for preset in CORE_PRESETS
            ],
            expected,
        )

    def test_explicit_finite_aliases_resolve_one_canonical_preset(self):
        german = matching_core_presets("194 mm Stahlkern")
        english = matching_core_presets("194 mm steel core")

        self.assertEqual(german, english)
        self.assertEqual(len(german), 1)
        self.assertEqual(german[0].key, "steel_194")

    def test_generic_existing_families_are_genuinely_ambiguous(self):
        self.assertEqual(
            [preset.key for preset in matching_core_presets("Stahlkern")],
            ["steel_133", "steel_194"],
        )
        self.assertEqual(
            [preset.key for preset in matching_core_presets("plastic core")],
            ["pvc_150", "pvc_168"],
        )

    def test_unknown_core_label_does_not_match(self):
        self.assertEqual(matching_core_presets("cardboard core"), ())


if __name__ == "__main__":
    unittest.main()