| 1 | import Foundation |
| 2 | |
| 3 | // 🤖 The native side of the web's `groupapps` registry (apps.js groupAppsApp): |
| 4 | // which mini-apps a GROUP chat has added is itself E2E fold state — encrypted |
| 5 | // groupapps.add / groupapps.remove events in the group's own log, seeded from |
| 6 | // the thread's encrypted slot-"apps" snapshot — so the server never learns |
| 7 | // which app (or that one) was added. This file is the pure, testable half: |
| 8 | // the catalog, the snapshot decode and the fold. ChatFeedModel feeds it. |
| 9 | public enum GroupApps { |
| 10 | /// One added app, as the web folds it: the item id IS the app name, so |
| 11 | /// re-adding is idempotent and a remove needs no lookup. |
| 12 | public struct Item: Equatable, Identifiable, Sendable { |
| 13 | public let id: String // the app name ("todo", "bookmarks", …) |
| 14 | public var by: String |
| 15 | public var ts: Int64 // ms, as stamped by the adder |
| 16 | public init(id: String, by: String, ts: Int64) { |
| 17 | self.id = id |
| 18 | self.by = by |
| 19 | self.ts = ts |
| 20 | } |
| 21 | } |
| 22 | |
| 23 | /// One groupapps.* wire event, keyed by its server message id so pages can |
| 24 | /// fold in any arrival order and a recompute stays deterministic. |
| 25 | public struct Event: Equatable, Sendable { |
| 26 | public let type: String // "groupapps.add" | "groupapps.remove" |
| 27 | public let app: String |
| 28 | public let by: String |
| 29 | public let ts: Int64 |
| 30 | public init(type: String, app: String, by: String, ts: Int64) { |
| 31 | self.type = type |
| 32 | self.app = app |
| 33 | self.by = by |
| 34 | self.ts = ts |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | // The old 4-app `catalog` (and its `known` read-filter) collapsed into |
| 39 | // AppRegistry (docs/native-apps.md phase 2): pickers render the |
| 40 | // registry's groupApps, and the install read-filter is registry.known — |
| 41 | // custom and member apps included, nothing hand-kept per app. |
| 42 | |
| 43 | /// Display titles for the CHAT PROJECTION only ("Ana added To-do to this |
| 44 | /// chat") — AppChatProjection runs on detached fold paths and can't read |
| 45 | /// the MainActor registry, so this nonisolated table stays until phase |
| 46 | /// 5's projection queries retire it. Everything UI-facing reads |
| 47 | /// AppRegistry instead. |
| 48 | public static func title(_ id: String) -> String { |
| 49 | let titles = [ |
| 50 | "todo": "To-do", "remind": "Reminders", "bookmarks": "Bookmarks", |
| 51 | "vault": "Vault", "board": "Whiteboard", "poll": "Poll", |
| 52 | "webhook-monitor": "Webhook Monitor", |
| 53 | ] |
| 54 | return titles[id] ?? id |
| 55 | } |
| 56 | |
| 57 | /// Recompute the added-apps list from the snapshot seed plus every event |
| 58 | /// NEWER than the snapshot's horizon, in log order — the web's fold |
| 59 | /// (addItem dedupes by id and keeps the original entry; remove deletes). |
| 60 | /// `events` is keyed by server message id; ids <= upTo are already inside |
| 61 | /// the seed, so they're skipped (apps.js foldInto's `mid <= upTo` rule). |
| 62 | public static func fold(seed: [Item], upTo: Int64, events: [Int64: Event]) -> [Item] { |
| 63 | var apps = seed |
| 64 | for (id, e) in events.sorted(by: { $0.key < $1.key }) { |
| 65 | guard id > upTo, !e.app.isEmpty else { continue } |
| 66 | switch e.type { |
| 67 | case "groupapps.add": |
| 68 | if !apps.contains(where: { $0.id == e.app }) { |
| 69 | apps.append(Item(id: e.app, by: e.by, ts: e.ts)) |
| 70 | } |
| 71 | case "groupapps.remove": |
| 72 | apps.removeAll { $0.id == e.app } |
| 73 | default: |
| 74 | break |
| 75 | } |
| 76 | } |
| 77 | return apps |
| 78 | } |
| 79 | |
| 80 | /// Decode the decrypted slot-"apps" snapshot into a seed. The registry is |
| 81 | /// one app on the web now ("installs" owns both the groupapps and |
| 82 | /// spaceapps families), so new snapshots hold its state under "installs"; |
| 83 | /// snapshots written before the unification used the per-family |
| 84 | /// "groupapps" key — read both, unified winning (apps.js seedThread's |
| 85 | /// shim, mirrored; without the new key a current web client's snapshot |
| 86 | /// seeds nothing here). Tolerant by design — other apps' states share the |
| 87 | /// blob and any of it may be missing. |
| 88 | public static func parseSnapshot(_ json: Data) -> (seed: [Item], upTo: Int64)? { |
| 89 | guard let root = (try? JSONSerialization.jsonObject(with: json)) as? [String: Any] else { |
| 90 | return nil |
| 91 | } |
| 92 | let upTo = (root["upTo"] as? NSNumber)?.int64Value ?? 0 |
| 93 | let states = root["states"] as? [String: Any] |
| 94 | let ga = (states?["installs"] ?? states?["groupapps"]) as? [String: Any] |
| 95 | let rows = ga?["apps"] as? [[String: Any]] ?? [] |
| 96 | let seed: [Item] = rows.compactMap { row in |
| 97 | guard let id = row["id"] as? String, !id.isEmpty else { return nil } |
| 98 | return Item(id: id, |
| 99 | by: row["by"] as? String ?? "", |
| 100 | ts: (row["ts"] as? NSNumber)?.int64Value ?? 0) |
| 101 | } |
| 102 | return (seed, upTo) |
| 103 | } |
| 104 | } |
| 105 | |
amadan