# -*- coding: utf-8 -*-
"""HTML 报告页薄写入 helper。"""

from __future__ import annotations

import os
import unittest

from _support import IsolatedDataRoot

from service.html_page_service import (
    HOST_HTML_RENDER_ACTION_ID,
    load_html_template,
    render_html_placeholders,
    write_html_page,
)


class TestHtmlPageService(unittest.TestCase):
    def test_host_action_id_is_stable(self) -> None:
        self.assertEqual(HOST_HTML_RENDER_ACTION_ID, "render-html")

    def test_write_html_page_atomic_under_html_dir(self) -> None:
        with IsolatedDataRoot() as tmp:
            path = write_html_page(
                "example-report.html",
                "<!DOCTYPE html><html><head><title>示例</title></head><body>ok</body></html>",
            )
            self.assertTrue(os.path.isfile(path))
            norm = path.replace("\\", "/")
            self.assertIn("/html/example-report.html", norm)
            self.assertTrue(os.path.normcase(os.path.normpath(path)).startswith(
                os.path.normcase(os.path.normpath(tmp)),
            ))
            self.assertFalse(os.path.isfile(path + ".tmp"))
            with open(path, encoding="utf-8") as f:
                self.assertIn("<title>示例</title>", f.read())

    def test_load_and_fill_example_template(self) -> None:
        with IsolatedDataRoot():
            template = load_html_template("assets/html/example-report.html")
            page = render_html_placeholders(
                template,
                {
                    "TITLE": "示例报告",
                    "GENERATED_AT": "2026-08-14 15:49:00",
                    "BODY": "<p>hello</p>",
                },
            )
            self.assertIn("<title>示例报告</title>", page)
            self.assertIn("报告生成于 · 2026-08-14 15:49:00", page)
            self.assertIn("<p>hello</p>", page)
            self.assertNotIn("{{TITLE}}", page)
            dest = write_html_page("example-report.html", page)
            self.assertTrue(os.path.isfile(dest))

    def test_rejects_unsafe_filename(self) -> None:
        with IsolatedDataRoot():
            with self.assertRaises(ValueError):
                write_html_page("../x.html", "<html></html>")
            with self.assertRaises(ValueError):
                write_html_page("note.txt", "<html></html>")

    def test_example_report_shell_embedded_preview_layout(self) -> None:
        """守护 example-report.html：数据管理 iframe 预览布局基线不退化。"""
        template = load_html_template("assets/html/example-report.html")
        self.assertIn("overflow-x: hidden", template)
        self.assertIn("min-width: 0", template)
        self.assertIn("table-layout: fixed", template)
        self.assertIn("overflow-wrap: anywhere", template)
        self.assertNotIn("max-width:", template)


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