package cabana

import (
	"strings"
	"testing"
)

func TestMarkdownRejectsUnsafeHTML(t *testing.T) {
	if html, err := RenderMarkdown("# Hello"); err != nil || !strings.Contains(html, "<h1>") {
		t.Fatalf("safe markdown: html=%s err=%v", html, err)
	}

	cases := []struct {
		name   string
		src    string
		needle string
	}{
		{"script", "<script>alert(1)</script>", "<script"},
		{"iframe", `<iframe src="https://evil.test"></iframe>`, "<iframe"},
		{"event", `<img src=x onerror="alert(1)">`, "onerror"},
		{"javascript", "[x](javascript:alert(1))", "javascript:"},
		{"vbscript", "[x](vbscript:msgbox(1))", "vbscript:"},
		{"data", "[x](data:text/html;base64,PHNjcmlwdD5hbGVydCgxKTwvc2NyaXB0Pg==)", "data:"},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			html, err := RenderMarkdown(tc.src)
			if err == nil && strings.Contains(strings.ToLower(html), tc.needle) {
				t.Fatalf("unsafe HTML survived: %s", html)
			}
			unchecked, convErr := renderMarkdownUnchecked(tc.src)
			if convErr != nil {
				t.Fatal(convErr)
			}
			if strings.Contains(strings.ToLower(unchecked), tc.needle) && err == nil {
				t.Fatalf("RenderMarkdown accepted %s: %s", tc.name, html)
			}
		})
	}
}