from __future__ import annotations

import json
import re
import unittest
from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
STATIC = ROOT / "static"


class FrontendBoundaryTests(unittest.TestCase):
    def test_shared_api_is_the_only_application_fetch_exit(self) -> None:
        fetch_files = []
        for path in STATIC.rglob("*.js"):
            if "vendor" in path.parts:
                continue
            if re.search(r"\bfetch\s*\(", path.read_text(encoding="utf-8")):
                fetch_files.append(path.relative_to(STATIC).as_posix())
        self.assertEqual(fetch_files, ["shared/api.js"])

    def test_shared_dependencies_load_before_application(self) -> None:
        html = (STATIC / "index.html").read_text(encoding="utf-8")
        pages_position = html.index('/pages.config.js')
        state_position = html.index('/shared/state.js')
        api_position = html.index('/shared/api.js')
        shell_position = html.index('/shared/shell.js')
        app_position = html.index('/app.js')
        self.assertLess(pages_position, state_position)
        self.assertLess(state_position, api_position)
        self.assertLess(api_position, shell_position)
        self.assertLess(shell_position, app_position)

    def test_application_state_is_created_through_shared_boundary(self) -> None:
        app = (STATIC / "app.js").read_text(encoding="utf-8")
        self.assertIn("const state = window.XiaobaiState.create({", app)
        self.assertNotIn("const state = {", app)

    def test_runtime_page_registry_matches_governance_registry(self) -> None:
        expected = json.loads(
            (ROOT / "config" / "pages.config.json").read_text(encoding="utf-8")
        )["pages"]
        runtime = (STATIC / "pages.config.js").read_text(encoding="utf-8")
        rows = re.findall(
            r'^\s*\["([^"]+)", "([^"]+)", "([^"]+)", "([^"]+)", "([^"]+)", (true|false)\],$',
            runtime,
            re.MULTILINE,
        )
        actual = [
            {
                "id": row[0],
                "title": row[1],
                "feature": row[2],
                "group": row[3],
                "access": row[4],
                "default": row[5] == "true",
                "desktop_scroll": "page",
                "mobile_layout": "dedicated",
            }
            for row in rows
        ]
        self.assertEqual(actual, expected)

    def test_shell_owns_navigation_and_page_mounting(self) -> None:
        app = (STATIC / "app.js").read_text(encoding="utf-8")
        shell = (STATIC / "shared" / "shell.js").read_text(encoding="utf-8")
        self.assertNotIn("function syncNavigationState", app)
        self.assertNotIn("function initializeApplicationShell", app)
        self.assertIn("function syncNavigation(viewId)", shell)
        self.assertIn("function mount(viewId, mountOptions = {})", shell)
        self.assertIn("function openModalDialog(dialog)", shell)
        self.assertNotIn('document.querySelectorAll(".module-tab").forEach', app)


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