// Copyright 2026 tamakyi. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

package template

import "testing"

func TestAnnouncementHTML(t *testing.T) {
	cases := []struct {
		name string
		in   string
		want string
	}{
		{"纯文本原样输出", "机房维护通知", "机房维护通知"},
		{"真实换行转 br", "第一行\n第二行", "第一行<br>第二行"},
		{"字面量 \\n 也转 br", `第一行\n第二行`, "第一行<br>第二行"},
		{"crlf 不产生多余 br", "第一行\r\n第二行", "第一行<br>第二行"},
		{
			"标签按字面转义",
			`<script>alert(1)</script>`,
			`&lt;script&gt;alert(1)&lt;/script&gt;`,
		},
		{
			"地址自动变链接",
			"详见 https://status.example.com/incident 谢谢",
			`详见 <a href="https://status.example.com/incident" target="_blank" rel="noopener noreferrer nofollow">https://status.example.com/incident</a> 谢谢`,
		},
		{
			"查询串的 & 被转义",
			"https://example.com/a?b=1&c=2",
			`<a href="https://example.com/a?b=1&amp;c=2" target="_blank" rel="noopener noreferrer nofollow">https://example.com/a?b=1&amp;c=2</a>`,
		},
		{
			"句末中文标点不进链接",
			"见 https://example.com/x。",
			`见 <a href="https://example.com/x" target="_blank" rel="noopener noreferrer nofollow">https://example.com/x</a>。`,
		},
		{
			"句末英文标点不进链接",
			"https://example.com/x, thanks",
			`<a href="https://example.com/x" target="_blank" rel="noopener noreferrer nofollow">https://example.com/x</a>, thanks`,
		},
		{
			"裸 scheme 不当链接",
			"https:// 后面没写地址",
			"https:// 后面没写地址",
		},
		{
			"引号无法逃逸属性",
			`https://example.com/"><img src=x onerror=alert(1)>`,
			`<a href="https://example.com/" target="_blank" rel="noopener noreferrer nofollow">https://example.com/</a>&#34;&gt;&lt;img src=x onerror=alert(1)&gt;`,
		},
	}
	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			got := string(AnnouncementHTML(c.in))
			if got != c.want {
				t.Fatalf("AnnouncementHTML(%q)\n got  %q\n want %q", c.in, got, c.want)
			}
		})
	}
}