fractal/session/model/notifications/
notifications_settings.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
use std::collections::HashMap;

use futures_util::StreamExt;
use gtk::{glib, glib::clone, prelude::*, subclass::prelude::*};
use matrix_sdk::{
    notification_settings::{
        IsEncrypted, NotificationSettings as MatrixNotificationSettings, RoomNotificationMode,
    },
    NotificationSettingsError,
};
use ruma::{
    push::{PredefinedOverrideRuleId, RuleKind},
    OwnedRoomId, RoomId,
};
use tokio::sync::broadcast::error::RecvError;
use tracing::{error, warn};

use crate::{
    session::model::{Room, Session, SessionState},
    spawn, spawn_tokio,
};

/// The possible values for the global notifications setting.
#[derive(
    Debug, Default, Hash, Eq, PartialEq, Clone, Copy, glib::Enum, strum::Display, strum::EnumString,
)]
#[repr(u32)]
#[enum_type(name = "NotificationsGlobalSetting")]
#[strum(serialize_all = "kebab-case")]
pub enum NotificationsGlobalSetting {
    /// Every message in every room.
    #[default]
    All = 0,
    /// Every message in 1-to-1 rooms, and mentions and keywords in every room.
    DirectAndMentions = 1,
    /// Only mentions and keywords in every room.
    MentionsOnly = 2,
}

/// The possible values for a room notifications setting.
#[derive(
    Debug, Default, Hash, Eq, PartialEq, Clone, Copy, glib::Enum, strum::Display, strum::EnumString,
)]
#[repr(u32)]
#[enum_type(name = "NotificationsRoomSetting")]
#[strum(serialize_all = "kebab-case")]
pub enum NotificationsRoomSetting {
    /// Use the global setting.
    #[default]
    Global = 0,
    /// All messages.
    All = 1,
    /// Only mentions and keywords.
    MentionsOnly = 2,
    /// No notifications.
    Mute = 3,
}

impl NotificationsRoomSetting {
    /// Convert to a [`RoomNotificationMode`].
    fn to_notification_mode(self) -> Option<RoomNotificationMode> {
        match self {
            Self::Global => None,
            Self::All => Some(RoomNotificationMode::AllMessages),
            Self::MentionsOnly => Some(RoomNotificationMode::MentionsAndKeywordsOnly),
            Self::Mute => Some(RoomNotificationMode::Mute),
        }
    }
}

impl From<RoomNotificationMode> for NotificationsRoomSetting {
    fn from(value: RoomNotificationMode) -> Self {
        match value {
            RoomNotificationMode::AllMessages => Self::All,
            RoomNotificationMode::MentionsAndKeywordsOnly => Self::MentionsOnly,
            RoomNotificationMode::Mute => Self::Mute,
        }
    }
}

mod imp {
    use std::cell::{Cell, RefCell};

    use super::*;

    #[derive(Debug, Default, glib::Properties)]
    #[properties(wrapper_type = super::NotificationsSettings)]
    pub struct NotificationsSettings {
        /// The parent `Session`.
        #[property(get, set = Self::set_session, explicit_notify, nullable)]
        pub session: glib::WeakRef<Session>,
        /// The SDK notification settings API.
        pub api: RefCell<Option<MatrixNotificationSettings>>,
        /// Whether notifications are enabled for this Matrix account.
        #[property(get)]
        pub account_enabled: Cell<bool>,
        /// Whether notifications are enabled for this session.
        #[property(get, set = Self::set_session_enabled, explicit_notify)]
        pub session_enabled: Cell<bool>,
        /// The global setting about which messages trigger notifications.
        #[property(get, builder(NotificationsGlobalSetting::default()))]
        pub global_setting: Cell<NotificationsGlobalSetting>,
        /// The list of keywords that trigger notifications.
        #[property(get)]
        pub keywords_list: gtk::StringList,
        /// The map of room ID to per-room notification setting.
        ///
        /// Any room not in this map uses the global setting.
        pub per_room_settings: RefCell<HashMap<OwnedRoomId, NotificationsRoomSetting>>,
    }

    #[glib::object_subclass]
    impl ObjectSubclass for NotificationsSettings {
        const NAME: &'static str = "NotificationsSettings";
        type Type = super::NotificationsSettings;
    }

    #[glib::derived_properties]
    impl ObjectImpl for NotificationsSettings {}

    impl NotificationsSettings {
        /// Set the parent `Session`.
        fn set_session(&self, session: Option<&Session>) {
            if self.session.upgrade().as_ref() == session {
                return;
            }

            let obj = self.obj();

            if let Some(session) = session {
                session
                    .settings()
                    .bind_property("notifications-enabled", &*obj, "session-enabled")
                    .sync_create()
                    .bidirectional()
                    .build();
            }

            self.session.set(session);
            obj.notify_session();

            spawn!(clone!(
                #[weak]
                obj,
                async move {
                    obj.init_api().await;
                }
            ));
        }

        /// Set whether notifications are enabled for this session.
        fn set_session_enabled(&self, enabled: bool) {
            if self.session_enabled.get() == enabled {
                return;
            }

            if !enabled {
                if let Some(session) = self.session.upgrade() {
                    session.notifications().clear();
                }
            }

            self.session_enabled.set(enabled);
            self.obj().notify_session_enabled();
        }
    }
}

glib::wrapper! {
    /// The notifications settings of a `Session`.
    pub struct NotificationsSettings(ObjectSubclass<imp::NotificationsSettings>);
}

impl NotificationsSettings {
    /// Create a new `NotificationsSettings`.
    pub fn new() -> Self {
        glib::Object::new()
    }

    /// The SDK notification settings API.
    fn api(&self) -> Option<MatrixNotificationSettings> {
        self.imp().api.borrow().clone()
    }

    /// Initialize the SDK notification settings API.
    async fn init_api(&self) {
        let Some(session) = self.session() else {
            self.imp().api.take();
            return;
        };

        // If the session is not ready, there is no client so let's wait to initialize
        // the API.
        if session.state() != SessionState::Ready {
            self.imp().api.take();

            session.connect_ready(clone!(
                #[weak(rename_to = obj)]
                self,
                move |_| {
                    spawn!(async move {
                        obj.init_api().await;
                    });
                }
            ));

            return;
        }

        let client = session.client();
        let api = spawn_tokio!(async move { client.notification_settings().await })
            .await
            .unwrap();
        let mut api_receiver = api.subscribe_to_changes();

        self.imp().api.replace(Some(api.clone()));

        let (mut sender, mut receiver) = futures_channel::mpsc::channel(10);
        spawn_tokio!(async move {
            loop {
                match api_receiver.recv().await {
                    Ok(()) => {
                        if let Err(error) = sender.try_send(()) {
                            error!("Error sending notifications settings change: {error}");
                            panic!();
                        }
                    }
                    Err(RecvError::Closed) => {
                        break;
                    }
                    Err(RecvError::Lagged(_)) => {
                        warn!("Some notifications settings changes were dropped");
                    }
                }
            }
        });

        spawn!(clone!(
            #[weak(rename_to = obj)]
            self,
            async move {
                obj.update().await;
            }
        ));

        while let Some(()) = receiver.next().await {
            spawn!(clone!(
                #[weak(rename_to = obj)]
                self,
                async move {
                    obj.update().await;
                }
            ));
        }
    }

    /// Update the notification settings from the SDK API.
    async fn update(&self) {
        let Some(api) = self.api() else {
            return;
        };

        let api_clone = api.clone();
        let handle = spawn_tokio!(async move {
            api_clone
                .is_push_rule_enabled(RuleKind::Override, PredefinedOverrideRuleId::Master)
                .await
        });

        let account_enabled = match handle.await.unwrap() {
            // The rule disables notifications, so we need to invert the boolean.
            Ok(enabled) => !enabled,
            Err(error) => {
                error!("Could not get account notifications setting: {error}");
                true
            }
        };
        self.set_account_enabled_inner(account_enabled);

        if default_rooms_notifications_is_all(api.clone(), false).await {
            self.set_global_setting_inner(NotificationsGlobalSetting::All);
        } else if default_rooms_notifications_is_all(api, true).await {
            self.set_global_setting_inner(NotificationsGlobalSetting::DirectAndMentions);
        } else {
            self.set_global_setting_inner(NotificationsGlobalSetting::MentionsOnly);
        }

        self.update_keywords_list().await;
        self.update_per_room_settings().await;
    }

    /// Set whether notifications are enabled for this session.
    pub async fn set_account_enabled(
        &self,
        enabled: bool,
    ) -> Result<(), NotificationSettingsError> {
        let Some(api) = self.api() else {
            error!("Cannot update notifications settings when API is not initialized");
            return Err(NotificationSettingsError::UnableToUpdatePushRule);
        };

        let handle = spawn_tokio!(async move {
            api.set_push_rule_enabled(
                RuleKind::Override,
                PredefinedOverrideRuleId::Master,
                // The rule disables notifications, so we need to invert the boolean.
                !enabled,
            )
            .await
        });

        match handle.await.unwrap() {
            Ok(()) => {
                self.set_account_enabled_inner(enabled);
                Ok(())
            }
            Err(error) => {
                error!("Could not change account notifications setting: {error}");
                Err(error)
            }
        }
    }

    fn set_account_enabled_inner(&self, enabled: bool) {
        if self.account_enabled() == enabled {
            return;
        }

        self.imp().account_enabled.set(enabled);
        self.notify_account_enabled();
    }

    /// Set the global setting about which messages trigger notifications.
    pub async fn set_global_setting(
        &self,
        setting: NotificationsGlobalSetting,
    ) -> Result<(), NotificationSettingsError> {
        let Some(api) = self.api() else {
            error!("Cannot update notifications settings when API is not initialized");
            return Err(NotificationSettingsError::UnableToUpdatePushRule);
        };

        let (group_all, one_to_one_all) = match setting {
            NotificationsGlobalSetting::All => (true, true),
            NotificationsGlobalSetting::DirectAndMentions => (false, true),
            NotificationsGlobalSetting::MentionsOnly => (false, false),
        };

        if let Err(error) = set_default_rooms_notifications_all(api.clone(), false, group_all).await
        {
            error!("Could not change global group chats notifications setting: {error}");
            return Err(error);
        }
        if let Err(error) = set_default_rooms_notifications_all(api, true, one_to_one_all).await {
            error!("Could not change global 1-to-1 chats notifications setting: {error}");
            return Err(error);
        }

        self.set_global_setting_inner(setting);

        Ok(())
    }

    fn set_global_setting_inner(&self, setting: NotificationsGlobalSetting) {
        if self.global_setting() == setting {
            return;
        }

        self.imp().global_setting.set(setting);
        self.notify_global_setting();
    }

    /// Update the local list of keywords with the remote one.
    async fn update_keywords_list(&self) {
        let Some(api) = self.api() else {
            return;
        };

        let keywords = spawn_tokio!(async move { api.enabled_keywords().await })
            .await
            .unwrap();

        let list = &self.imp().keywords_list;
        let mut diverges_at = None;

        let keywords = keywords.iter().map(String::as_str).collect::<Vec<_>>();
        let new_len = keywords.len() as u32;
        let old_len = list.n_items();

        // Check if there is any keyword that changed, was moved or was added.
        for (pos, keyword) in keywords.iter().enumerate() {
            if Some(*keyword)
                != list
                    .item(pos as u32)
                    .and_downcast::<gtk::StringObject>()
                    .map(|o| o.string())
                    .as_deref()
            {
                diverges_at = Some(pos as u32);
                break;
            }
        }

        // Check if keywords were removed.
        if diverges_at.is_none() && old_len > new_len {
            diverges_at = Some(new_len);
        }

        let Some(pos) = diverges_at else {
            // Nothing to do.
            return;
        };

        let additions = &keywords[pos as usize..];
        list.splice(pos, old_len.saturating_sub(pos), additions);
    }

    /// Remove a keyword from the list.
    pub async fn remove_keyword(&self, keyword: String) -> Result<(), NotificationSettingsError> {
        let Some(api) = self.api() else {
            error!("Cannot update notifications settings when API is not initialized");
            return Err(NotificationSettingsError::UnableToUpdatePushRule);
        };

        let keyword_clone = keyword.clone();
        let handle = spawn_tokio!(async move { api.remove_keyword(&keyword_clone).await });

        if let Err(error) = handle.await.unwrap() {
            error!("Could not remove notification keyword `{keyword}`: {error}");
            return Err(error);
        }

        self.update_keywords_list().await;

        Ok(())
    }

    /// Add a keyword to the list.
    pub async fn add_keyword(&self, keyword: String) -> Result<(), NotificationSettingsError> {
        let Some(api) = self.api() else {
            error!("Cannot update notifications settings when API is not initialized");
            return Err(NotificationSettingsError::UnableToUpdatePushRule);
        };

        let keyword_clone = keyword.clone();
        let handle = spawn_tokio!(async move { api.add_keyword(keyword_clone).await });

        if let Err(error) = handle.await.unwrap() {
            error!("Could not add notification keyword `{keyword}`: {error}");
            return Err(error);
        }

        self.update_keywords_list().await;

        Ok(())
    }

    /// Update the local list of per-room settings with the remote one.
    async fn update_per_room_settings(&self) {
        let Some(api) = self.api() else {
            return;
        };

        let api_clone = api.clone();
        let room_ids = spawn_tokio!(async move {
            api_clone
                .get_rooms_with_user_defined_rules(Some(true))
                .await
        })
        .await
        .unwrap();

        // Update the local map.
        let mut per_room_settings = HashMap::with_capacity(room_ids.len());
        for room_id in room_ids {
            let Ok(room_id) = RoomId::parse(room_id) else {
                continue;
            };

            let room_id_clone = room_id.clone();
            let api_clone = api.clone();
            let handle = spawn_tokio!(async move {
                api_clone
                    .get_user_defined_room_notification_mode(&room_id_clone)
                    .await
            });

            if let Some(setting) = handle.await.unwrap() {
                per_room_settings.insert(room_id, setting.into());
            }
        }

        self.imp()
            .per_room_settings
            .replace(per_room_settings.clone());

        // Update the setting in the rooms.
        // Since we don't know when a room was added or removed, we have to update every
        // room.
        let Some(session) = self.session() else {
            return;
        };
        let room_list = session.room_list();

        for room in room_list.iter::<Room>() {
            let Ok(room) = room else {
                // Returns an error when the list changed, just stop.
                break;
            };

            if let Some(setting) = per_room_settings.get(room.room_id()) {
                room.set_notifications_setting(*setting);
            } else {
                room.set_notifications_setting(NotificationsRoomSetting::Global);
            }
        }
    }

    /// Set the notification setting for the room with the given ID.
    pub async fn set_per_room_setting(
        &self,
        room_id: OwnedRoomId,
        setting: NotificationsRoomSetting,
    ) -> Result<(), NotificationSettingsError> {
        let Some(api) = self.api() else {
            error!("Cannot update notifications settings when API is not initialized");
            return Err(NotificationSettingsError::UnableToUpdatePushRule);
        };

        let room_id_clone = room_id.clone();
        let handle = if let Some(mode) = setting.to_notification_mode() {
            spawn_tokio!(async move { api.set_room_notification_mode(&room_id_clone, mode).await })
        } else {
            spawn_tokio!(async move { api.delete_user_defined_room_rules(&room_id_clone).await })
        };

        if let Err(error) = handle.await.unwrap() {
            error!("Could not update notifications setting for room `{room_id}`: {error}");
            return Err(error);
        }

        self.update_per_room_settings().await;

        Ok(())
    }
}

impl Default for NotificationsSettings {
    fn default() -> Self {
        Self::new()
    }
}

async fn default_rooms_notifications_is_all(
    api: MatrixNotificationSettings,
    is_one_to_one: bool,
) -> bool {
    let mode = spawn_tokio!(async move {
        api.get_default_room_notification_mode(IsEncrypted::No, is_one_to_one.into())
            .await
    })
    .await
    .unwrap();

    mode == RoomNotificationMode::AllMessages
}

async fn set_default_rooms_notifications_all(
    api: MatrixNotificationSettings,
    is_one_to_one: bool,
    all: bool,
) -> Result<(), NotificationSettingsError> {
    let mode = if all {
        RoomNotificationMode::AllMessages
    } else {
        RoomNotificationMode::MentionsAndKeywordsOnly
    };

    spawn_tokio!(async move {
        api.set_default_room_notification_mode(IsEncrypted::No, is_one_to_one.into(), mode)
            .await
    })
    .await
    .unwrap()
}