render.gno

  1package gnotif
  2
  3import (
  4	"chain"
  5	"chain/runtime/unsafe"
  6	"strconv"
  7	"strings"
  8
  9	"gno.land/p/nt/markdown/sanitize/v0"
 10)
 11
 12const pageSize = 50
 13
 14// Render serves "" (the first page), "page/N", "trigger/<id>" and
 15// "target/<path>".
 16func Render(path string) string {
 17	switch {
 18	case path == "":
 19		return renderPage(1)
 20	case strings.HasPrefix(path, "page/"):
 21		n, err := strconv.Atoi(strings.TrimPrefix(path, "page/"))
 22		if err != nil || n < 1 {
 23			return "Not found."
 24		}
 25		return renderPage(n)
 26	case strings.HasPrefix(path, "trigger/"):
 27		id := strings.TrimPrefix(path, "trigger/")
 28		v := triggers.Get(id)
 29		if v == nil {
 30			return "Not found."
 31		}
 32		return renderTrigger(id, decodeRecord(v))
 33	case strings.HasPrefix(path, "target/"):
 34		target := strings.TrimPrefix(path, "target/")
 35		ids := activeOf(target)
 36		if len(ids) == 0 {
 37			return "Not found."
 38		}
 39		return renderTarget(target, ids)
 40	}
 41	return "Not found."
 42}
 43
 44// renderPage lists the triggers newest first, pageSize to a page.
 45func renderPage(n int) string {
 46	var b strings.Builder
 47	b.WriteString("# gnotif triggers\n\n")
 48	pages := (triggers.Size() + pageSize - 1) / pageSize
 49	if n > pages {
 50		b.WriteString("No triggers on this page.\n")
 51		return b.String()
 52	}
 53	triggers.ReverseIterateByOffset((n-1)*pageSize, pageSize, func(id string, v any) bool {
 54		writeLine(&b, id, decodeRecord(v))
 55		return false
 56	})
 57	if n < pages {
 58		b.WriteString("\n[Next page](" + selfPath + ":page/" + strconv.Itoa(n+1) + ")\n")
 59	}
 60	return b.String()
 61}
 62
 63// renderTarget lists a realm's triggers, newest first. The cap on them keeps
 64// the page to one screen, so it is not paged.
 65func renderTarget(target string, ids []string) string {
 66	var b strings.Builder
 67	b.WriteString("# gnotif triggers for " + sanitize.InlineText(target) + "\n\n")
 68	for i := len(ids) - 1; i >= 0; i-- {
 69		writeLine(&b, ids[i], decodeRecord(triggers.Get(ids[i])))
 70	}
 71	b.WriteString("\n[All triggers](" + selfPath + ")\n")
 72	return b.String()
 73}
 74
 75func writeLine(b *strings.Builder, id string, r record) {
 76	b.WriteString("- [**" + id + "**](" + selfPath + ":trigger/" + id + ") " +
 77		sanitize.InlineText(r.Target) + " · " + sanitize.InlineText(r.Name) + " · " + sanitize.InlineText(r.T.Event))
 78	if r.T.Param != "" {
 79		b.WriteString(" · param " + sanitize.InlineText(r.T.Param))
 80	}
 81	b.WriteString(" · ✓ verified · by " + chain.PackageAddress(r.Target).String() + "\n")
 82}
 83
 84func renderTrigger(id string, r record) string {
 85	var b strings.Builder
 86	b.WriteString("# Trigger " + id + "\n\n")
 87	b.WriteString("- Target: " + sanitize.InlineText(r.Target) + "\n")
 88	b.WriteString("- Name: " + sanitize.InlineText(r.Name) + "\n")
 89	b.WriteString("- Event: " + sanitize.InlineText(r.T.Event) + "\n")
 90	b.WriteString("- Filter: " + sanitize.InlineText(r.T.Filter) + "\n")
 91	b.WriteString("- Param: " + sanitize.InlineText(r.T.Param) + "\n")
 92	b.WriteString("- Title: " + sanitize.InlineText(r.T.Title) + "\n")
 93	b.WriteString("- Body: " + sanitize.InlineText(r.T.Body) + "\n")
 94	b.WriteString("- Link: " + sanitize.InlineText(r.T.Link) + "\n")
 95	b.WriteString("- Declarer: " + chain.PackageAddress(r.Target).String() + "\n")
 96	b.WriteString("- ✓ verified\n")
 97	b.WriteString("\n[All triggers](" + selfPath + ")\n")
 98	return b.String()
 99}
100
101// selfPath is this realm's path on gnoweb, read at package init: Render is not
102// crossing, so reading it there would give the caller's path.
103var selfPath = strings.TrimPrefix(unsafe.CurrentRealm().PkgPath(), "gno.land")