from __future__ import annotations

import re
import unittest
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
INDEX = (ROOT / "admin" / "index.html").read_text(encoding="utf-8")
STYLES = (ROOT / "admin" / "styles.css").read_text(encoding="utf-8")
APP = (ROOT / "admin" / "app.js").read_text(encoding="utf-8")
HTTPAPP = (ROOT / "datahub" / "httpapp.py").read_text(encoding="utf-8")


class ConsoleShellTests(unittest.TestCase):
    """The console shell must carry the site-session gate, not its own login."""

    def test_independent_login_and_password_change_are_gone(self) -> None:
        for removed in ("login-form", "change-form", "login-view", "change-view", 'value="hub_admin"'):
            self.assertNotIn(removed, INDEX, f"{removed} 属于已废弃的独立账号体系")
        self.assertNotIn("/admin/api/login", APP)
        self.assertNotIn("/admin/api/change-password", APP)

    def test_gate_offers_a_way_back_to_the_review_site(self) -> None:
        for element in ("gate-view", "gate-title", "gate-desc", "gate-login", "gate-retry"):
            self.assertIn(element, INDEX)
        self.assertIn("/admin/api/session", APP)
        self.assertIn("login_url", APP)

    def test_nav_exposes_the_pages_this_console_now_owns(self) -> None:
        for page in ("overview", "sources", "models", "members", "lineage"):
            self.assertIn(f'data-nav="{page}"', INDEX)
        # 路由白名单必须与导航一致，否则点了导航会回落到总览
        routed = re.search(r"return \[([^\]]+)\]\.includes\(h\)", APP)
        assert routed is not None
        for page in ("overview", "sources", "models", "members", "lineage"):
            self.assertIn(f"'{page}'", routed.group(1))


class ThemeTokenTests(unittest.TestCase):
    """Day/night is one token set with two value sets — never stacked overrides."""

    def test_both_themes_define_the_same_tokens(self) -> None:
        night = _token_block(':root,\n:root[data-theme="night"]')
        day = _token_block(':root[data-theme="day"]')
        self.assertTrue(night)
        self.assertEqual(
            sorted(night),
            sorted(day),
            "日间主题必须覆盖同一组变量名，缺一个就会漏出夜间色",
        )

    def test_no_hardcoded_colours_escape_the_token_set(self) -> None:
        # 颜色只要写死在 JS 或组件样式里，切主题就会有一块保持夜间色。
        self.assertEqual([], re.findall(r"#[0-9a-fA-F]{6}", APP))
        after_tokens = STYLES.split("/* ---------- ambient background", 1)[1]
        self.assertEqual([], re.findall(r"#[0-9a-fA-F]{6}", after_tokens))

    def test_no_dark_literal_paint_survives_outside_the_token_blocks(self) -> None:
        """A literal dark rgba() would stay dark in day mode — tokens only.

        Accent tints are allowed: they are low-opacity washes of the four
        status hues and read correctly on either background.
        """
        accent = {(34, 211, 238), (52, 211, 153), (251, 191, 36), (248, 113, 113)}
        offenders = []
        body = STYLES.split("/* ---------- ambient background", 1)[1]
        for line in body.splitlines():
            for match in re.finditer(r"rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)", line):
                rgb = tuple(int(match.group(index)) for index in (1, 2, 3))
                if rgb in accent or sum(rgb) >= 250:
                    continue
                offenders.append(line.strip()[:80])
        self.assertEqual([], offenders, "深色字面值必须收敛成 token，否则日间主题会漏出夜间底色")

    def test_theme_choice_survives_a_reload(self) -> None:
        self.assertIn("localStorage.getItem('datahub-theme')", APP)
        self.assertIn("localStorage.setItem('datahub-theme'", APP)
        self.assertIn('data-theme="night"', INDEX)

    def test_svg_colours_go_through_style_so_tokens_apply(self) -> None:
        # var() 在 SVG 呈现属性里支持不稳，必须写进 style 才吃得到主题变量。
        for attribute in ('fill="var(', 'stroke="var(', 'stop-color="var('):
            self.assertNotIn(attribute, APP, f"{attribute} 应改写为 style 声明")


class NarrowScreenTests(unittest.TestCase):
    def test_narrow_layout_stacks_inputs_and_buttons(self) -> None:
        self.assertIn("@media (max-width: 1100px)", STYLES)
        narrow = STYLES.split("@media (max-width: 1100px)", 1)[1]
        self.assertIn(".field-row { grid-template-columns: minmax(0, 1fr); }", narrow)
        # 凭证行与模型行在窄屏都要竖排，按钮才不会和输入框抢同一行
        self.assertIn(".cred-line { flex-direction: column;", narrow)
        self.assertIn(".model-row { flex-direction: column;", narrow)


class ConsoleEndpointTests(unittest.TestCase):
    def test_every_endpoint_the_page_calls_is_routed(self) -> None:
        called = {
            path.split("?")[0]
            for path in re.findall(r"api\('(/admin/api/[^']+)'", APP)
        }
        self.assertTrue(called)
        for path in called:
            if path.startswith("/admin/api/sources/"):
                continue
            self.assertIn(f'"{path}"', HTTPAPP, f"{path} 前端在调，后端没路由")

    def test_write_endpoints_are_reached_with_the_csrf_header(self) -> None:
        self.assertIn("X-CSRF-Token", APP)
        self.assertIn("check_csrf", HTTPAPP)


def _token_block(selector: str) -> list[str]:
    start = STYLES.index(selector)
    body = STYLES[start:].split("}", 1)[0]
    return re.findall(r"(--[a-z0-9-]+):", body)


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


class StylesheetIntegrityTests(unittest.TestCase):
    """HEL-560 改造中曾误把样式表尾部整段截断，抽屉/弹层/toast 全部失样，
    页面照样能跑、单测照样绿。这里把"每个仍在用的组件都得有样式"钉死。"""

    def test_every_component_the_page_renders_still_has_its_own_rules(self) -> None:
        for selector in (
            ".auth-wrap", ".drawer", ".drawer-mask", ".drawer-hd", ".drawer-tab",
            ".modal-mask", ".modal-box", ".modal-actions", ".opbtn", ".empty-hint",
            ".toast", ".row-fail", ".row-off", ".spark-end", ".cred-box", ".model-row",
            ".vend-manual", ".gate-panel", ".dtable", ".invite-code", ".table-foot",
            ".pbtn", ".field", ".form-hint",
        ):
            self.assertIn(f"{selector} ", STYLES, f"{selector} 的样式丢了")

    def test_stylesheet_braces_stay_balanced(self) -> None:
        body = STYLES[STYLES.index("/* ================= index.css"):]
        self.assertEqual(body.count("{"), body.count("}"))