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flagon-io/g1t

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1/**
2 * Notifications: the notify service (`services/notify`) keeps one feed per
3 * person, a Durable Object holding their open tabs' sockets, their latest
4 * notifications, live unread counts, their browser push subscriptions and
5 * the phones the g1t app pushes to.
6 *
7 * Chat tells it about every message a person should count or hear of, the
8 * events service about every inbox item, and the site forwards each tab's
9 * `/-/live` socket to it. Wire shapes are snake_case end to end.
10 */
11import type { AgentLook } from "./agent-look";
12import type { CardAction } from "./chat";
13import type { ServiceBinding } from "./clients";
14import type { User } from "./identity";
15
16/** What a notification is about; the preferences decide which ones toast and push. */
17export type NotificationKind = "dm" | "mention" | "thread_reply" | "inbox" | "agent_waiting" | "approval";
18
19export const NOTIFICATION_KINDS: readonly NotificationKind[] = ["dm", "mention", "thread_reply", "inbox", "agent_waiting", "approval"];
20
21/** Who it is from: a person, an agent, or g1t itself. */
22export type NotificationActor = {
23 kind: "user" | "agent" | "system";
24 id: string;
25 /** How they show: a display name. */
26 name: string;
27 /** A person's uploaded avatar hash, or null for the letter avatar. */
28 avatar?: string | null;
29 /** What an agent's face is drawn from when it chose none. */
30 avatar_seed?: string | null;
31 /** An agent's chosen face (./agent-look.ts). */
32 look?: AgentLook | null;
33};
34
35export type FeedNotification = {
36 /** Unique per notification: the same id twice is told once. */
37 id: string;
38 kind: NotificationKind;
39 /** The workspace's slug. */
40 workspace: string;
41 title: string;
42 /** A short preview, a line or two. */
43 body: string;
44 /** Where clicking it goes, relative to the site. */
45 href: string;
46 actor: NotificationActor;
47 /** The conversation it is in, for a chat notification: toasts for the open one are skipped, and pushes collapse by it. */
48 channel_id?: string | null;
49 /** The thread it is in, for a reply: quick replies go there. */
50 thread_root?: string | null;
51 /**
52 * The chat card it is about, when that card has something to press: a
53 * session at its cap (Approve more, Stop, Open), a draft issue (File
54 * issue, Discard). The toast and the notifications panel show these
55 * actions, and pressing one goes to the site's `card_action`, exactly as
56 * on the card itself.
57 */
58 card?: NotificationCard | null;
59 created_at: string;
60};
61
62/** A card's place and its main actions, carried on a notification about it. */
63export type NotificationCard = {
64 /** The conversation the card is in. */
65 channel_id: string;
66 /** The message that is the card. */
67 message_id: string;
68 /** The card's actions as it offers them: ids, labels, inputs and links, the same as on the card. */
69 actions: CardAction[];
70};
71
72/** How much a person hears of. Counts always move; this governs toasts and pushes. */
73export type NotifyLevel = "all" | "dms_mentions" | "none";
74
75export const NOTIFY_LEVELS: readonly NotifyLevel[] = ["all", "dms_mentions", "none"];
76
77export type NotifyPreferences = {
78 level: NotifyLevel;
79 /** A different level for a workspace, by slug. */
80 workspaces: Record<string, NotifyLevel>;
81};
82
83/** A change to them: a workspace set to null goes back to the general level. */
84export type NotifyPreferencesChange = { level?: NotifyLevel; workspaces?: Record<string, NotifyLevel | null> };
85
86export const DEFAULT_NOTIFY_PREFERENCES: NotifyPreferences = { level: "dms_mentions", workspaces: {} };
87
88/** A browser's push subscription, as `PushSubscription.toJSON()` gives it. */
89export type PushSubscriptionJson = {
90 endpoint: string;
91 expiration_time?: number | null;
92 keys: { p256dh: string; auth: string };
93};
94
95/**
96 * A phone the g1t app runs on, as the app registers it: the push token
97 * Expo gave it (`ExponentPushToken[…]`), which platform, and a name to
98 * know it by (at most 100 characters).
99 */
100export type PushDevice = { token: string; platform: "android" | "ios"; name?: string | null };
101
102/** A conversation's unread counts for one person. */
103export type ChannelCounts = { channel_id: string; unread: number; mentions: number; muted: boolean };
104
105/**
106 * What a person has unread in a workspace. `chat_unread` leaves out muted
107 * conversations, as the rail's badge does; mentions count everywhere.
108 * `inbox_unread` is the person's whole inbox, which is not per workspace.
109 * `complete` says `per_channel` was read from chat itself (on connect), so
110 * a conversation left out of it has nothing unread.
111 */
112export type FeedCounts = {
113 workspace: string;
114 chat_unread: number;
115 chat_mentions: number;
116 inbox_unread: number;
117 per_channel: Omit<ChannelCounts, "muted">[];
118 complete: boolean;
119};
120
121// ── Presence and status ──────────────────────────────────────────────────
122//
123// Presence is worked out live by the person's feed from their open tabs:
124// `active` while a tab has been used in the last few minutes, `away` when
125// every tab has sat idle (or they set themselves away), `offline` once no
126// tab is open. Status is what they say about themselves: an emoji and a
127// few words, cleared at a time they chose. Do Not Disturb silences toasts
128// and pushes until a time; counts still move.
129//
130// Both are kept by the notify service (the feed, one per person) and told
131// to everyone who shares a workspace with them, over the same socket,
132// through one presence room per workspace. Nothing polls.
133
134export type Presence = "active" | "away" | "offline";
135
136/**
137 * Who set a status: the person, or something acting for them. Calendars
138 * and other integrations set `calendar` or `integration` (with their own
139 * `clear_at`); a status the person set by hand is never replaced by one.
140 */
141export type StatusSource = "manual" | "calendar" | "integration";
142
143export const STATUS_SOURCES: readonly StatusSource[] = ["manual", "calendar", "integration"];
144
145export type PersonStatus = {
146 /** One emoji, or a custom emoji's `:name:`; null for none. */
147 emoji: string | null;
148 /** A few words: "In a meeting". At most 100 characters. */
149 text: string;
150 /** When it clears itself (RFC 3339); null keeps it until changed. */
151 clear_at: string | null;
152 source: StatusSource;
153 /** When it was set (RFC 3339). */
154 set_at: string;
155};
156
157/** How a person shows to the people who share a workspace with them. */
158export type PresenceEntry = {
159 user_id: string;
160 username: string;
161 presence: Presence;
162 /** Do Not Disturb, until then (RFC 3339); null when off. */
163 dnd_until: string | null;
164 status: PersonStatus | null;
165 /** When this last changed, in ms: a later word wins. */
166 at: number;
167};
168
169/** The signed-in person's own: what everyone sees, and whether they set themselves away. */
170export type OwnPresence = PresenceEntry & { away_manual: boolean };
171
172/**
173 * A change to your own. `status: null` clears it; `away` sets (or ends)
174 * being away by hand; `dnd_until: null` resumes notifications.
175 */
176export type PresenceChange = {
177 status?: { emoji?: string | null; text: string; clear_at?: string | null; source?: StatusSource } | null;
178 away?: boolean;
179 dnd_until?: string | null;
180};
181
182/** What the feed socket sends a tab. */
183export type FeedEvent =
184 | { type: "hello"; notifications: FeedNotification[]; vapid_public_key: string | null; preferences: NotifyPreferences }
185 | { type: "notification"; notification: FeedNotification; toast: boolean }
186 | ({ type: "counts" } & FeedCounts)
187 | { type: "preferences"; preferences: NotifyPreferences }
188 /** The person's inbox count as it now is, after items arrive or are marked anywhere. */
189 | { type: "inbox"; unread: number }
190 /**
191 * People in a workspace: everyone known on connect (`full`), then each
192 * one as they change.
193 */
194 | { type: "presence"; workspace: string; people: PresenceEntry[]; full: boolean }
195 /** Your own presence, status and Do Not Disturb, on connect and after every change. */
196 | { type: "me"; me: OwnPresence };
197
198/**
199 * What a tab sends over the feed socket: plain `ping` every 25 s (answered
200 * without waking the feed), and a state frame whenever it gains or loses
201 * focus, moves to another page, or goes idle (no input for a while) or
202 * back, and the inbox count the page last read.
203 */
204export type FeedClientFrame =
205 | { type: "state"; focused: boolean; path: string; idle?: boolean }
206 | { type: "inbox"; unread: number };
207
208/**
209 * One delivery from chat: counts to move for one person in one
210 * conversation, and maybe a notification. `set` replaces the counts (after
211 * reading, or writing); otherwise they are added.
212 */
213export type FeedDelivery = {
214 user_id: string;
215 workspace: string;
216 counts?: {
217 channel_id: string;
218 unread: number;
219 mentions: number;
220 muted?: boolean | null;
221 set?: boolean;
222 } | null;
223 notification?: FeedNotification | null;
224};
225
226/** What the site hands the feed with a socket: who, and the counts read from chat and the inbox just now. */
227export type FeedSeed = {
228 workspace: string | null;
229 per_channel: ChannelCounts[] | null;
230 inbox_unread: number | null;
231 /** Every workspace the person belongs to, by slug: whose rooms hear of their presence. */
232 workspaces?: string[] | null;
233};
234
235/** Headers the site sets on a forwarded feed socket. */
236export const NOTIFY_VIEWER_HEADER = "x-g1t-notify-viewer";
237export const NOTIFY_SEED_HEADER = "x-g1t-notify-seed";
238
239export type NotifyStatus = {
240 preferences: NotifyPreferences;
241 /** How many browsers get pushes. */
242 subscriptions: number;
243 /** How many phones the g1t app pushes to (absent from a service older than them). */
244 devices?: number;
245 /** Whether this browser's endpoint is one of them, when it was asked about. */
246 subscribed: boolean;
247 /** The public key a browser subscribes with; null when push is not set up. */
248 vapid_public_key: string | null;
249};
250
251export type NotifyApi = {
252 /** Tells a person: their open tabs at once, and a push when none is in front of them. */
253 notify(target: { user_id?: string; username?: string }, notification: FeedNotification): Promise<{ ok: boolean }>;
254 /** Many at once, as chat sends them for a message. */
255 deliver(items: FeedDelivery[]): Promise<{ ok: boolean }>;
256 subscribe(user: User, subscription: PushSubscriptionJson, userAgent?: string | null): Promise<{ ok: boolean }>;
257 unsubscribe(user: User, endpoint: string): Promise<{ ok: boolean }>;
258 /** A phone the app runs on gets pushes too; the newest 10 are kept. `ok` is false for a token that is not Expo's. */
259 registerDevice(user: User, device: PushDevice): Promise<{ ok: boolean }>;
260 /** That phone stops getting them: the app signed out. */
261 unregisterDevice(user: User, token: string): Promise<{ ok: boolean }>;
262 status(user: User, endpoint?: string | null): Promise<NotifyStatus>;
263 setPreferences(user: User, preferences: NotifyPreferencesChange): Promise<NotifyPreferences>;
264 /** Sends the person a test notification, toasted and pushed whatever their focus. */
265 test(user: User): Promise<{ ok: boolean; pushed: number }>;
266 /** Your own presence, status and Do Not Disturb. */
267 presence(user: User): Promise<OwnPresence>;
268 /**
269 * Changes your own, and tells everyone who shares a workspace with you.
270 * Integrations set a status for someone the same way, with their own
271 * `source`; one the person set by hand is kept over theirs.
272 */
273 setPresence(user: Pick<User, "id" | "username">, change: PresenceChange): Promise<OwnPresence>;
274 /**
275 * For services: how a workspace's people show now (`userIds` narrows it).
276 * Someone the room has never heard from is not listed: they are offline.
277 */
278 workspacePresence(workspace: string, userIds?: string[] | null): Promise<PresenceEntry[]>;
279 /**
280 * When the person was last on the workspace's Home page (RFC 3339), or
281 * null when they never were. Kept with them, so it is the same on every
282 * device.
283 */
284 lastVisit(user: Pick<User, "id">, workspace: string): Promise<{ seen_at: string | null }>;
285 /**
286 * Marks that visit at `at` (RFC 3339): Home sends the time the page
287 * loaded, once the person has looked at it. It only moves forward, never
288 * past now nor more than a day behind it.
289 */
290 markVisit(user: Pick<User, "id">, workspace: string, at: string): Promise<{ seen_at: string | null }>;
291};
292
293async function rpc<T>(service: ServiceBinding, method: string, args: object): Promise<T> {
294 const response = await service.fetch(`https://service/rpc/${method}`, {
295 method: "POST",
296 headers: { "content-type": "application/json" },
297 body: JSON.stringify(args),
298 });
299 if (!response.ok) throw new Error(`${method} failed with status ${response.status}`);
300 return (await response.json()) as T;
301}
302
303export function notifyClient(service: ServiceBinding): NotifyApi {
304 const call = <T>(method: string, args: object) => rpc<T>(service, method, args);
305 return {
306 notify: (target, notification) => call("notify", { user_id: target.user_id ?? null, username: target.username ?? null, notification }),
307 deliver: (items) => call("deliver", { items }),
308 subscribe: (user, subscription, userAgent) => call("subscribe", { user_id: user.id, subscription, user_agent: userAgent ?? null }),
309 unsubscribe: (user, endpoint) => call("unsubscribe", { user_id: user.id, endpoint }),
310 registerDevice: (user, device) => call("register_device", { user_id: user.id, device }),
311 unregisterDevice: (user, token) => call("unregister_device", { user_id: user.id, token }),
312 status: (user, endpoint) => call("status", { user_id: user.id, endpoint: endpoint ?? null }),
313 setPreferences: (user, preferences) => call("set_preferences", { user_id: user.id, preferences }),
314 test: (user) => call("test", { user_id: user.id, username: user.username }),
315 presence: (user) => call("presence", { user_id: user.id, username: user.username }),
316 setPresence: (user, change) => call("set_presence", { user_id: user.id, username: user.username, change }),
317 workspacePresence: (workspace, userIds) => call("workspace_presence", { workspace, user_ids: userIds ?? null }),
318 lastVisit: (user, workspace) => call("last_visit", { user_id: user.id, workspace }),
319 markVisit: (user, workspace, at) => call("mark_visit", { user_id: user.id, workspace, at }),
320 };
321}