echo.gno

 1// Package echo is gnotif's demo realm: Echo sends a message back to its
 2// caller as a browser notification.
 3package echo
 4
 5import (
 6	"chain"
 7
 8	"gno.land/r/g1rzgxl6njyu4c2x89gxvaa9cswrt73rz8mlp7l6/alpha2/gnotif/v0"
 9)
10
11// The registry sees this realm as the caller, so the trigger is verified.
12func init(cur realm) {
13	gnotif.Declare(cross(cur), cur.PkgPath(), "Echo", "", "to", "Echo", "{msg}", "/")
14}
15
16// Echo sends msg to the browsers that opted in with the caller's address.
17// The recipient is always the caller, so nobody can notify another address.
18func Echo(cur realm, msg string) {
19	chain.Emit("Echo", "to", cur.Previous().Address().String(), "msg", msg)
20}
21
22// Render serves one page for every path: what Echo does and where to try it.
23func Render(_ string) string {
24	return "# Echo\n\n" +
25		"Call `Echo` with a message, and gnotif shows it as a notification in the browsers " +
26		"that turned on notifications for your own address. Nobody else can send one to you.\n\n" +
27		"Try it on [demo.gnotif.xyz](https://demo.gnotif.xyz).\n"
28}