notify.gno

 1package gnosplit
 2
 3import (
 4	"chain"
 5
 6	"gno.land/p/nym-alexiscolin000/gnosplit/ledger/v0"
 7	gnotif "gno.land/r/nym-gfanton001/gnotif/v0"
 8)
 9
10// Events. The first ones say what changed, for indexers and apps. The notify
11// ones each carry "to", a wallet: gnotif turns them into a browser
12// notification for whoever opted in with that address. A notify event goes
13// only to members with a wallet, never to the member who acted.
14const (
15	EventGroupCreated = "GroupCreated"
16	EventMemberAdded  = "MemberAdded"
17	EventMemberLinked = "MemberLinked"
18	EventEntryAdded   = "EntryAdded"
19	EventEntryDeleted = "EntryDeleted"
20	EventGroupMoved   = "GroupMoved"
21	EventOwnerOffered = "OwnerOffered"
22	EventOwnerChanged = "OwnerChanged"
23	EventSuccessorSet = "SuccessorSet"
24
25	NotifyExpense  = "Expense"  // to, group, gname, by, title, share
26	NotifyIncome   = "Income"   // to, group, gname, by, title, share
27	NotifyTransfer = "Transfer" // to, group, gname, from, peer, amount
28	NotifyReminder = "Reminder" // to, group, gname, by, amount
29	NotifyJoined   = "Joined"   // to, group, gname, by
30)
31
32// declareTriggers registers the notify events with gnotif at deploy. The
33// registry marks them verified, since this realm declares its own.
34// ponytail: gnotif is a v0 on onyx; a new registry version means a new
35// release of this realm, which is why every gnotif call lives in this file.
36func declareTriggers(cur realm) {
37	triggers := [][2]string{
38		{NotifyExpense, "{by} added {title}. Your share: {share}"},
39		{NotifyIncome, "{by} recorded {title}. You get back {share}"},
40		{NotifyTransfer, "{from} paid {peer} {amount}"},
41		{NotifyReminder, "{by} reminds you that you owe {amount}"},
42		{NotifyJoined, "{by} added you to the group"},
43	}
44	for _, t := range triggers {
45		gnotif.Declare(cross(cur), self, t[0], "", "to", "{gname}", t[1], hub+":{group}")
46	}
47}
48
49func notifyEntry(g *Group, e *Entry, by int) {
50	if e.Kind == KindTransfer {
51		for _, i := range []int{e.Payer, e.Who[0]} {
52			if to := g.Members[i].Addr; to != "" && i != by {
53				chain.Emit(NotifyTransfer, "to", to.String(), "group", itoa(g.ID), "gname", g.Name,
54					"from", g.Members[e.Payer].Name, "peer", g.Members[e.Who[0]].Name, "amount", g.money(e.Total))
55			}
56		}
57		return
58	}
59	event := NotifyExpense
60	if e.Kind == KindIncome {
61		event = NotifyIncome
62	}
63	for k, i := range e.Who {
64		if to := g.Members[i].Addr; to != "" && i != by {
65			share := e.Owe[k]
66			if share < 0 {
67				share = -share
68			}
69			chain.Emit(event, "to", to.String(), "group", itoa(g.ID), "gname", g.Name,
70				"by", g.Members[by].Name, "title", e.Title, "share", g.money(share))
71		}
72	}
73}
74
75func notifyReminder(g *Group, m *Member, by string) {
76	chain.Emit(NotifyReminder, "to", m.Addr.String(), "group", itoa(g.ID), "gname", g.Name,
77		"by", by, "amount", g.money(-m.Bal))
78}
79
80func notifyJoined(g *Group, a address, by string) {
81	chain.Emit(NotifyJoined, "to", a.String(), "group", itoa(g.ID), "gname", g.Name, "by", by)
82}
83
84// money writes cents with the group's currency: "42.50 €".
85func (g *Group) money(c int64) string { return ledger.Format(c) + " " + g.Currency }