capabilities.gno

 1package memba_notes_v1
 2
 3import (
 4	"gno.land/p/samcrew/avl"
 5	"strconv"
 6)
 7
 8// Only explicit public grants are stored. Private notes keep their existing ACL.
 9var publicWriteGrants = avl.NewTree()
10
11func publicWritesEnabled(n *note) bool {
12	_, granted := publicWriteGrants.Get(idText(n.ID))
13	return !n.Deleted && n.Mode == ModePublicOpen && granted
14}
15func resetPublicWrites(n *note) {
16	if _, granted := publicWriteGrants.Get(idText(n.ID)); granted {
17		publicWriteGrants.Remove(idText(n.ID))
18	}
19}
20
21// Community editing never grants ResolveComment or any owner/moderator action.
22// Keep requireWrite unchanged for those existing permissions.
23// While paused the grant is ignored, so only the existing ACL can edit.
24func requireContentWrite(cur realm, n *note, who address) {
25	if !paused && publicWritesEnabled(n) && cur.Previous().IsUserCall() {
26		return
27	}
28	requireWrite(cur, n, who)
29}
30
31func SetPublicWrites(cur realm, id [16]byte, baseRevision uint64, on bool, opID [16]byte) {
32	who := enter(cur, false)
33	defer leave()
34	mutateSetPublicWrites(cur, who, id, baseRevision, on, opID)
35}
36func mutateSetPublicWrites(cur realm, who address, id [16]byte, baseRevision uint64, on bool, opID [16]byte) {
37	n := live(id)
38	owner(n, who)
39	expected(n, baseRevision)
40	if n.Mode != ModePublicOpen {
41		panic("notes: public-open note required")
42	}
43	operation(n, opID)
44	if publicWritesEnabled(n) == on {
45		panic("notes: public writes unchanged")
46	}
47	if on {
48		publicWriteGrants.Set(idText(id), true)
49	} else {
50		resetPublicWrites(n)
51	}
52	bump(n, who, opID, "public-writes")
53}
54
55// Separate schema: existing NoteJSON consumers retain their exact field set.
56func PublicCapabilitiesJSON(idHex string) string {
57	v, ok := notes.Get(idText(readID(idHex)))
58	if !ok {
59		return "null"
60	}
61	n := v.(*note)
62	if !public(n.Mode) {
63		return "null"
64	}
65	return `{"schema":"memba-notes/public-capabilities/v1","id":` + q(idText(n.ID)) + `,"state_revision":` + u(n.Revision) + `,"owner_generation":` + u(n.OwnerGeneration) + `,"mode":` + strconv.Itoa(int(n.Mode)) + `,"deleted":` + strconv.FormatBool(n.Deleted) + `,"allow_public_writes":` + strconv.FormatBool(publicWritesEnabled(n)) + `}`
66}