render.gno

 1package gnotif
 2
 3import (
 4	"chain/runtime/unsafe"
 5	"strconv"
 6	"strings"
 7
 8	"gno.land/p/nt/markdown/sanitize/v0"
 9)
10
11const pageSize = 50
12
13// Render serves "" (the first page), "page/N" and "trigger/<id>".
14func Render(path string) string {
15	switch {
16	case path == "":
17		return renderPage(1)
18	case strings.HasPrefix(path, "page/"):
19		n, err := strconv.Atoi(strings.TrimPrefix(path, "page/"))
20		if err != nil || n < 1 {
21			return "Not found."
22		}
23		return renderPage(n)
24	case strings.HasPrefix(path, "trigger/"):
25		v := triggers.Get(strings.TrimPrefix(path, "trigger/"))
26		if v == nil {
27			return "Not found."
28		}
29		return renderTrigger(v.(*Trigger))
30	}
31	return "Not found."
32}
33
34// renderPage lists the triggers newest first, pageSize to a page.
35func renderPage(n int) string {
36	var b strings.Builder
37	b.WriteString("# gnotif triggers\n\n")
38	pages := (triggers.Size() + pageSize - 1) / pageSize
39	if n > pages {
40		b.WriteString("No triggers on this page.\n")
41		return b.String()
42	}
43	triggers.ReverseIterateByOffset((n-1)*pageSize, pageSize, func(_ string, v any) bool {
44		tr := v.(*Trigger)
45		b.WriteString("- [**" + tr.ID + "**](" + selfPath + ":trigger/" + tr.ID + ") " +
46			sanitize.InlineText(tr.Target) + " · " + sanitize.InlineText(tr.Event))
47		if tr.Param != "" {
48			b.WriteString(" · param " + sanitize.InlineText(tr.Param))
49		}
50		if tr.Verified {
51			b.WriteString(" · ✓ verified")
52		}
53		b.WriteString(" · by " + tr.Declarer.String() + "\n")
54		return false
55	})
56	if n < pages {
57		b.WriteString("\n[Next page](" + selfPath + ":page/" + strconv.Itoa(n+1) + ")\n")
58	}
59	return b.String()
60}
61
62func renderTrigger(tr *Trigger) string {
63	var b strings.Builder
64	b.WriteString("# Trigger " + tr.ID + "\n\n")
65	b.WriteString("- Target: " + sanitize.InlineText(tr.Target) + "\n")
66	b.WriteString("- Event: " + sanitize.InlineText(tr.Event) + "\n")
67	b.WriteString("- Filter: " + sanitize.InlineText(tr.Filter) + "\n")
68	b.WriteString("- Param: " + sanitize.InlineText(tr.Param) + "\n")
69	b.WriteString("- Title: " + sanitize.InlineText(tr.Title) + "\n")
70	b.WriteString("- Body: " + sanitize.InlineText(tr.Body) + "\n")
71	b.WriteString("- Link: " + sanitize.InlineText(tr.Link) + "\n")
72	b.WriteString("- Declarer: " + tr.Declarer.String() + "\n")
73	if tr.Verified {
74		b.WriteString("- ✓ verified\n")
75	}
76	b.WriteString("\n[All triggers](" + selfPath + ")\n")
77	return b.String()
78}
79
80// selfPath is this realm's path on gnoweb. It is read at package init, where
81// the realm itself is current; Render is not crossing, so reading it there
82// would give the caller's path. It only builds links.
83var selfPath = strings.TrimPrefix(unsafe.CurrentRealm().PkgPath(), "gno.land")