db.rs

  1use anyhow::Context;
  2use anyhow::Result;
  3use async_trait::async_trait;
  4use serde::Serialize;
  5pub use sqlx::postgres::PgPoolOptions as DbOptions;
  6use sqlx::{types::Uuid, FromRow};
  7use time::OffsetDateTime;
  8
  9#[async_trait]
 10pub trait Db: Send + Sync {
 11    async fn create_user(&self, github_login: &str, admin: bool) -> Result<UserId>;
 12    async fn get_all_users(&self) -> Result<Vec<User>>;
 13    async fn get_user_by_id(&self, id: UserId) -> Result<Option<User>>;
 14    async fn get_users_by_ids(&self, ids: Vec<UserId>) -> Result<Vec<User>>;
 15    async fn get_user_by_github_login(&self, github_login: &str) -> Result<Option<User>>;
 16    async fn set_user_is_admin(&self, id: UserId, is_admin: bool) -> Result<()>;
 17    async fn destroy_user(&self, id: UserId) -> Result<()>;
 18    async fn create_access_token_hash(
 19        &self,
 20        user_id: UserId,
 21        access_token_hash: &str,
 22        max_access_token_count: usize,
 23    ) -> Result<()>;
 24    async fn get_access_token_hashes(&self, user_id: UserId) -> Result<Vec<String>>;
 25    #[cfg(any(test, feature = "seed-support"))]
 26    async fn find_org_by_slug(&self, slug: &str) -> Result<Option<Org>>;
 27    #[cfg(any(test, feature = "seed-support"))]
 28    async fn create_org(&self, name: &str, slug: &str) -> Result<OrgId>;
 29    #[cfg(any(test, feature = "seed-support"))]
 30    async fn add_org_member(&self, org_id: OrgId, user_id: UserId, is_admin: bool) -> Result<()>;
 31    #[cfg(any(test, feature = "seed-support"))]
 32    async fn create_org_channel(&self, org_id: OrgId, name: &str) -> Result<ChannelId>;
 33    #[cfg(any(test, feature = "seed-support"))]
 34    async fn get_org_channels(&self, org_id: OrgId) -> Result<Vec<Channel>>;
 35    async fn get_accessible_channels(&self, user_id: UserId) -> Result<Vec<Channel>>;
 36    async fn can_user_access_channel(&self, user_id: UserId, channel_id: ChannelId)
 37        -> Result<bool>;
 38    #[cfg(any(test, feature = "seed-support"))]
 39    async fn add_channel_member(
 40        &self,
 41        channel_id: ChannelId,
 42        user_id: UserId,
 43        is_admin: bool,
 44    ) -> Result<()>;
 45    async fn create_channel_message(
 46        &self,
 47        channel_id: ChannelId,
 48        sender_id: UserId,
 49        body: &str,
 50        timestamp: OffsetDateTime,
 51        nonce: u128,
 52    ) -> Result<MessageId>;
 53    async fn get_channel_messages(
 54        &self,
 55        channel_id: ChannelId,
 56        count: usize,
 57        before_id: Option<MessageId>,
 58    ) -> Result<Vec<ChannelMessage>>;
 59    #[cfg(test)]
 60    async fn teardown(&self, url: &str);
 61}
 62
 63pub struct PostgresDb {
 64    pool: sqlx::PgPool,
 65}
 66
 67impl PostgresDb {
 68    pub async fn new(url: &str, max_connections: u32) -> Result<Self> {
 69        let pool = DbOptions::new()
 70            .max_connections(max_connections)
 71            .connect(&url)
 72            .await
 73            .context("failed to connect to postgres database")?;
 74        Ok(Self { pool })
 75    }
 76}
 77
 78#[async_trait]
 79impl Db for PostgresDb {
 80    // users
 81
 82    async fn create_user(&self, github_login: &str, admin: bool) -> Result<UserId> {
 83        let query = "
 84            INSERT INTO users (github_login, admin)
 85            VALUES ($1, $2)
 86            ON CONFLICT (github_login) DO UPDATE SET github_login = excluded.github_login
 87            RETURNING id
 88        ";
 89        Ok(sqlx::query_scalar(query)
 90            .bind(github_login)
 91            .bind(admin)
 92            .fetch_one(&self.pool)
 93            .await
 94            .map(UserId)?)
 95    }
 96
 97    async fn get_all_users(&self) -> Result<Vec<User>> {
 98        let query = "SELECT * FROM users ORDER BY github_login ASC";
 99        Ok(sqlx::query_as(query).fetch_all(&self.pool).await?)
100    }
101
102    async fn get_user_by_id(&self, id: UserId) -> Result<Option<User>> {
103        let users = self.get_users_by_ids(vec![id]).await?;
104        Ok(users.into_iter().next())
105    }
106
107    async fn get_users_by_ids(&self, ids: Vec<UserId>) -> Result<Vec<User>> {
108        let ids = ids.into_iter().map(|id| id.0).collect::<Vec<_>>();
109        let query = "
110            SELECT users.*
111            FROM users
112            WHERE users.id = ANY ($1)
113        ";
114        Ok(sqlx::query_as(query)
115            .bind(&ids)
116            .fetch_all(&self.pool)
117            .await?)
118    }
119
120    async fn get_user_by_github_login(&self, github_login: &str) -> Result<Option<User>> {
121        let query = "SELECT * FROM users WHERE github_login = $1 LIMIT 1";
122        Ok(sqlx::query_as(query)
123            .bind(github_login)
124            .fetch_optional(&self.pool)
125            .await?)
126    }
127
128    async fn set_user_is_admin(&self, id: UserId, is_admin: bool) -> Result<()> {
129        let query = "UPDATE users SET admin = $1 WHERE id = $2";
130        Ok(sqlx::query(query)
131            .bind(is_admin)
132            .bind(id.0)
133            .execute(&self.pool)
134            .await
135            .map(drop)?)
136    }
137
138    async fn destroy_user(&self, id: UserId) -> Result<()> {
139        let query = "DELETE FROM access_tokens WHERE user_id = $1;";
140        sqlx::query(query)
141            .bind(id.0)
142            .execute(&self.pool)
143            .await
144            .map(drop)?;
145        let query = "DELETE FROM users WHERE id = $1;";
146        Ok(sqlx::query(query)
147            .bind(id.0)
148            .execute(&self.pool)
149            .await
150            .map(drop)?)
151    }
152
153    // access tokens
154
155    async fn create_access_token_hash(
156        &self,
157        user_id: UserId,
158        access_token_hash: &str,
159        max_access_token_count: usize,
160    ) -> Result<()> {
161        let insert_query = "
162            INSERT INTO access_tokens (user_id, hash)
163            VALUES ($1, $2);
164        ";
165        let cleanup_query = "
166            DELETE FROM access_tokens
167            WHERE id IN (
168                SELECT id from access_tokens
169                WHERE user_id = $1
170                ORDER BY id DESC
171                OFFSET $3
172            )
173        ";
174
175        let mut tx = self.pool.begin().await?;
176        sqlx::query(insert_query)
177            .bind(user_id.0)
178            .bind(access_token_hash)
179            .execute(&mut tx)
180            .await?;
181        sqlx::query(cleanup_query)
182            .bind(user_id.0)
183            .bind(access_token_hash)
184            .bind(max_access_token_count as u32)
185            .execute(&mut tx)
186            .await?;
187        Ok(tx.commit().await?)
188    }
189
190    async fn get_access_token_hashes(&self, user_id: UserId) -> Result<Vec<String>> {
191        let query = "
192            SELECT hash
193            FROM access_tokens
194            WHERE user_id = $1
195            ORDER BY id DESC
196        ";
197        Ok(sqlx::query_scalar(query)
198            .bind(user_id.0)
199            .fetch_all(&self.pool)
200            .await?)
201    }
202
203    // orgs
204
205    #[allow(unused)] // Help rust-analyzer
206    #[cfg(any(test, feature = "seed-support"))]
207    async fn find_org_by_slug(&self, slug: &str) -> Result<Option<Org>> {
208        let query = "
209            SELECT *
210            FROM orgs
211            WHERE slug = $1
212        ";
213        Ok(sqlx::query_as(query)
214            .bind(slug)
215            .fetch_optional(&self.pool)
216            .await?)
217    }
218
219    #[cfg(any(test, feature = "seed-support"))]
220    async fn create_org(&self, name: &str, slug: &str) -> Result<OrgId> {
221        let query = "
222            INSERT INTO orgs (name, slug)
223            VALUES ($1, $2)
224            RETURNING id
225        ";
226        Ok(sqlx::query_scalar(query)
227            .bind(name)
228            .bind(slug)
229            .fetch_one(&self.pool)
230            .await
231            .map(OrgId)?)
232    }
233
234    #[cfg(any(test, feature = "seed-support"))]
235    async fn add_org_member(&self, org_id: OrgId, user_id: UserId, is_admin: bool) -> Result<()> {
236        let query = "
237            INSERT INTO org_memberships (org_id, user_id, admin)
238            VALUES ($1, $2, $3)
239            ON CONFLICT DO NOTHING
240        ";
241        Ok(sqlx::query(query)
242            .bind(org_id.0)
243            .bind(user_id.0)
244            .bind(is_admin)
245            .execute(&self.pool)
246            .await
247            .map(drop)?)
248    }
249
250    // channels
251
252    #[cfg(any(test, feature = "seed-support"))]
253    async fn create_org_channel(&self, org_id: OrgId, name: &str) -> Result<ChannelId> {
254        let query = "
255            INSERT INTO channels (owner_id, owner_is_user, name)
256            VALUES ($1, false, $2)
257            RETURNING id
258        ";
259        Ok(sqlx::query_scalar(query)
260            .bind(org_id.0)
261            .bind(name)
262            .fetch_one(&self.pool)
263            .await
264            .map(ChannelId)?)
265    }
266
267    #[allow(unused)] // Help rust-analyzer
268    #[cfg(any(test, feature = "seed-support"))]
269    async fn get_org_channels(&self, org_id: OrgId) -> Result<Vec<Channel>> {
270        let query = "
271            SELECT *
272            FROM channels
273            WHERE
274                channels.owner_is_user = false AND
275                channels.owner_id = $1
276        ";
277        Ok(sqlx::query_as(query)
278            .bind(org_id.0)
279            .fetch_all(&self.pool)
280            .await?)
281    }
282
283    async fn get_accessible_channels(&self, user_id: UserId) -> Result<Vec<Channel>> {
284        let query = "
285            SELECT
286                channels.*
287            FROM
288                channel_memberships, channels
289            WHERE
290                channel_memberships.user_id = $1 AND
291                channel_memberships.channel_id = channels.id
292        ";
293        Ok(sqlx::query_as(query)
294            .bind(user_id.0)
295            .fetch_all(&self.pool)
296            .await?)
297    }
298
299    async fn can_user_access_channel(
300        &self,
301        user_id: UserId,
302        channel_id: ChannelId,
303    ) -> Result<bool> {
304        let query = "
305            SELECT id
306            FROM channel_memberships
307            WHERE user_id = $1 AND channel_id = $2
308            LIMIT 1
309        ";
310        Ok(sqlx::query_scalar::<_, i32>(query)
311            .bind(user_id.0)
312            .bind(channel_id.0)
313            .fetch_optional(&self.pool)
314            .await
315            .map(|e| e.is_some())?)
316    }
317
318    #[cfg(any(test, feature = "seed-support"))]
319    async fn add_channel_member(
320        &self,
321        channel_id: ChannelId,
322        user_id: UserId,
323        is_admin: bool,
324    ) -> Result<()> {
325        let query = "
326            INSERT INTO channel_memberships (channel_id, user_id, admin)
327            VALUES ($1, $2, $3)
328            ON CONFLICT DO NOTHING
329        ";
330        Ok(sqlx::query(query)
331            .bind(channel_id.0)
332            .bind(user_id.0)
333            .bind(is_admin)
334            .execute(&self.pool)
335            .await
336            .map(drop)?)
337    }
338
339    // messages
340
341    async fn create_channel_message(
342        &self,
343        channel_id: ChannelId,
344        sender_id: UserId,
345        body: &str,
346        timestamp: OffsetDateTime,
347        nonce: u128,
348    ) -> Result<MessageId> {
349        let query = "
350            INSERT INTO channel_messages (channel_id, sender_id, body, sent_at, nonce)
351            VALUES ($1, $2, $3, $4, $5)
352            ON CONFLICT (nonce) DO UPDATE SET nonce = excluded.nonce
353            RETURNING id
354        ";
355        Ok(sqlx::query_scalar(query)
356            .bind(channel_id.0)
357            .bind(sender_id.0)
358            .bind(body)
359            .bind(timestamp)
360            .bind(Uuid::from_u128(nonce))
361            .fetch_one(&self.pool)
362            .await
363            .map(MessageId)?)
364    }
365
366    async fn get_channel_messages(
367        &self,
368        channel_id: ChannelId,
369        count: usize,
370        before_id: Option<MessageId>,
371    ) -> Result<Vec<ChannelMessage>> {
372        let query = r#"
373            SELECT * FROM (
374                SELECT
375                    id, channel_id, sender_id, body, sent_at AT TIME ZONE 'UTC' as sent_at, nonce
376                FROM
377                    channel_messages
378                WHERE
379                    channel_id = $1 AND
380                    id < $2
381                ORDER BY id DESC
382                LIMIT $3
383            ) as recent_messages
384            ORDER BY id ASC
385        "#;
386        Ok(sqlx::query_as(query)
387            .bind(channel_id.0)
388            .bind(before_id.unwrap_or(MessageId::MAX))
389            .bind(count as i64)
390            .fetch_all(&self.pool)
391            .await?)
392    }
393
394    #[cfg(test)]
395    async fn teardown(&self, url: &str) {
396        use util::ResultExt;
397
398        let query = "
399            SELECT pg_terminate_backend(pg_stat_activity.pid)
400            FROM pg_stat_activity
401            WHERE pg_stat_activity.datname = current_database() AND pid <> pg_backend_pid();
402        ";
403        sqlx::query(query).execute(&self.pool).await.log_err();
404        self.pool.close().await;
405        <sqlx::Postgres as sqlx::migrate::MigrateDatabase>::drop_database(url)
406            .await
407            .log_err();
408    }
409}
410
411macro_rules! id_type {
412    ($name:ident) => {
413        #[derive(
414            Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, sqlx::Type, Serialize,
415        )]
416        #[sqlx(transparent)]
417        #[serde(transparent)]
418        pub struct $name(pub i32);
419
420        impl $name {
421            #[allow(unused)]
422            pub const MAX: Self = Self(i32::MAX);
423
424            #[allow(unused)]
425            pub fn from_proto(value: u64) -> Self {
426                Self(value as i32)
427            }
428
429            #[allow(unused)]
430            pub fn to_proto(&self) -> u64 {
431                self.0 as u64
432            }
433        }
434    };
435}
436
437id_type!(UserId);
438#[derive(Clone, Debug, FromRow, Serialize, PartialEq)]
439pub struct User {
440    pub id: UserId,
441    pub github_login: String,
442    pub admin: bool,
443}
444
445id_type!(OrgId);
446#[derive(FromRow)]
447pub struct Org {
448    pub id: OrgId,
449    pub name: String,
450    pub slug: String,
451}
452
453id_type!(ChannelId);
454#[derive(Clone, Debug, FromRow, Serialize)]
455pub struct Channel {
456    pub id: ChannelId,
457    pub name: String,
458    pub owner_id: i32,
459    pub owner_is_user: bool,
460}
461
462id_type!(MessageId);
463#[derive(Clone, Debug, FromRow)]
464pub struct ChannelMessage {
465    pub id: MessageId,
466    pub channel_id: ChannelId,
467    pub sender_id: UserId,
468    pub body: String,
469    pub sent_at: OffsetDateTime,
470    pub nonce: Uuid,
471}
472
473#[cfg(test)]
474pub mod tests {
475    use super::*;
476    use anyhow::anyhow;
477    use collections::BTreeMap;
478    use gpui::executor::Background;
479    use lazy_static::lazy_static;
480    use parking_lot::Mutex;
481    use rand::prelude::*;
482    use sqlx::{
483        migrate::{MigrateDatabase, Migrator},
484        Postgres,
485    };
486    use std::{path::Path, sync::Arc};
487    use util::post_inc;
488
489    #[tokio::test(flavor = "multi_thread")]
490    async fn test_get_users_by_ids() {
491        for test_db in [
492            TestDb::postgres().await,
493            TestDb::fake(Arc::new(gpui::executor::Background::new())),
494        ] {
495            let db = test_db.db();
496
497            let user = db.create_user("user", false).await.unwrap();
498            let friend1 = db.create_user("friend-1", false).await.unwrap();
499            let friend2 = db.create_user("friend-2", false).await.unwrap();
500            let friend3 = db.create_user("friend-3", false).await.unwrap();
501
502            assert_eq!(
503                db.get_users_by_ids(vec![user, friend1, friend2, friend3])
504                    .await
505                    .unwrap(),
506                vec![
507                    User {
508                        id: user,
509                        github_login: "user".to_string(),
510                        admin: false,
511                    },
512                    User {
513                        id: friend1,
514                        github_login: "friend-1".to_string(),
515                        admin: false,
516                    },
517                    User {
518                        id: friend2,
519                        github_login: "friend-2".to_string(),
520                        admin: false,
521                    },
522                    User {
523                        id: friend3,
524                        github_login: "friend-3".to_string(),
525                        admin: false,
526                    }
527                ]
528            );
529        }
530    }
531
532    #[tokio::test(flavor = "multi_thread")]
533    async fn test_recent_channel_messages() {
534        for test_db in [
535            TestDb::postgres().await,
536            TestDb::fake(Arc::new(gpui::executor::Background::new())),
537        ] {
538            let db = test_db.db();
539            let user = db.create_user("user", false).await.unwrap();
540            let org = db.create_org("org", "org").await.unwrap();
541            let channel = db.create_org_channel(org, "channel").await.unwrap();
542            for i in 0..10 {
543                db.create_channel_message(
544                    channel,
545                    user,
546                    &i.to_string(),
547                    OffsetDateTime::now_utc(),
548                    i,
549                )
550                .await
551                .unwrap();
552            }
553
554            let messages = db.get_channel_messages(channel, 5, None).await.unwrap();
555            assert_eq!(
556                messages.iter().map(|m| &m.body).collect::<Vec<_>>(),
557                ["5", "6", "7", "8", "9"]
558            );
559
560            let prev_messages = db
561                .get_channel_messages(channel, 4, Some(messages[0].id))
562                .await
563                .unwrap();
564            assert_eq!(
565                prev_messages.iter().map(|m| &m.body).collect::<Vec<_>>(),
566                ["1", "2", "3", "4"]
567            );
568        }
569    }
570
571    #[tokio::test(flavor = "multi_thread")]
572    async fn test_channel_message_nonces() {
573        for test_db in [
574            TestDb::postgres().await,
575            TestDb::fake(Arc::new(gpui::executor::Background::new())),
576        ] {
577            let db = test_db.db();
578            let user = db.create_user("user", false).await.unwrap();
579            let org = db.create_org("org", "org").await.unwrap();
580            let channel = db.create_org_channel(org, "channel").await.unwrap();
581
582            let msg1_id = db
583                .create_channel_message(channel, user, "1", OffsetDateTime::now_utc(), 1)
584                .await
585                .unwrap();
586            let msg2_id = db
587                .create_channel_message(channel, user, "2", OffsetDateTime::now_utc(), 2)
588                .await
589                .unwrap();
590            let msg3_id = db
591                .create_channel_message(channel, user, "3", OffsetDateTime::now_utc(), 1)
592                .await
593                .unwrap();
594            let msg4_id = db
595                .create_channel_message(channel, user, "4", OffsetDateTime::now_utc(), 2)
596                .await
597                .unwrap();
598
599            assert_ne!(msg1_id, msg2_id);
600            assert_eq!(msg1_id, msg3_id);
601            assert_eq!(msg2_id, msg4_id);
602        }
603    }
604
605    #[tokio::test(flavor = "multi_thread")]
606    async fn test_create_access_tokens() {
607        let test_db = TestDb::postgres().await;
608        let db = test_db.db();
609        let user = db.create_user("the-user", false).await.unwrap();
610
611        db.create_access_token_hash(user, "h1", 3).await.unwrap();
612        db.create_access_token_hash(user, "h2", 3).await.unwrap();
613        assert_eq!(
614            db.get_access_token_hashes(user).await.unwrap(),
615            &["h2".to_string(), "h1".to_string()]
616        );
617
618        db.create_access_token_hash(user, "h3", 3).await.unwrap();
619        assert_eq!(
620            db.get_access_token_hashes(user).await.unwrap(),
621            &["h3".to_string(), "h2".to_string(), "h1".to_string(),]
622        );
623
624        db.create_access_token_hash(user, "h4", 3).await.unwrap();
625        assert_eq!(
626            db.get_access_token_hashes(user).await.unwrap(),
627            &["h4".to_string(), "h3".to_string(), "h2".to_string(),]
628        );
629
630        db.create_access_token_hash(user, "h5", 3).await.unwrap();
631        assert_eq!(
632            db.get_access_token_hashes(user).await.unwrap(),
633            &["h5".to_string(), "h4".to_string(), "h3".to_string()]
634        );
635    }
636
637    pub struct TestDb {
638        pub db: Option<Arc<dyn Db>>,
639        pub url: String,
640    }
641
642    impl TestDb {
643        pub async fn postgres() -> Self {
644            lazy_static! {
645                static ref LOCK: Mutex<()> = Mutex::new(());
646            }
647
648            let _guard = LOCK.lock();
649            let mut rng = StdRng::from_entropy();
650            let name = format!("zed-test-{}", rng.gen::<u128>());
651            let url = format!("postgres://postgres@localhost/{}", name);
652            let migrations_path = Path::new(concat!(env!("CARGO_MANIFEST_DIR"), "/migrations"));
653            Postgres::create_database(&url)
654                .await
655                .expect("failed to create test db");
656            let db = PostgresDb::new(&url, 5).await.unwrap();
657            let migrator = Migrator::new(migrations_path).await.unwrap();
658            migrator.run(&db.pool).await.unwrap();
659            Self {
660                db: Some(Arc::new(db)),
661                url,
662            }
663        }
664
665        pub fn fake(background: Arc<Background>) -> Self {
666            Self {
667                db: Some(Arc::new(FakeDb::new(background))),
668                url: Default::default(),
669            }
670        }
671
672        pub fn db(&self) -> &Arc<dyn Db> {
673            self.db.as_ref().unwrap()
674        }
675    }
676
677    impl Drop for TestDb {
678        fn drop(&mut self) {
679            if let Some(db) = self.db.take() {
680                futures::executor::block_on(db.teardown(&self.url));
681            }
682        }
683    }
684
685    pub struct FakeDb {
686        background: Arc<Background>,
687        users: Mutex<BTreeMap<UserId, User>>,
688        next_user_id: Mutex<i32>,
689        orgs: Mutex<BTreeMap<OrgId, Org>>,
690        next_org_id: Mutex<i32>,
691        org_memberships: Mutex<BTreeMap<(OrgId, UserId), bool>>,
692        channels: Mutex<BTreeMap<ChannelId, Channel>>,
693        next_channel_id: Mutex<i32>,
694        channel_memberships: Mutex<BTreeMap<(ChannelId, UserId), bool>>,
695        channel_messages: Mutex<BTreeMap<MessageId, ChannelMessage>>,
696        next_channel_message_id: Mutex<i32>,
697    }
698
699    impl FakeDb {
700        pub fn new(background: Arc<Background>) -> Self {
701            Self {
702                background,
703                users: Default::default(),
704                next_user_id: Mutex::new(1),
705                orgs: Default::default(),
706                next_org_id: Mutex::new(1),
707                org_memberships: Default::default(),
708                channels: Default::default(),
709                next_channel_id: Mutex::new(1),
710                channel_memberships: Default::default(),
711                channel_messages: Default::default(),
712                next_channel_message_id: Mutex::new(1),
713            }
714        }
715    }
716
717    #[async_trait]
718    impl Db for FakeDb {
719        async fn create_user(&self, github_login: &str, admin: bool) -> Result<UserId> {
720            self.background.simulate_random_delay().await;
721
722            let mut users = self.users.lock();
723            if let Some(user) = users
724                .values()
725                .find(|user| user.github_login == github_login)
726            {
727                Ok(user.id)
728            } else {
729                let user_id = UserId(post_inc(&mut *self.next_user_id.lock()));
730                users.insert(
731                    user_id,
732                    User {
733                        id: user_id,
734                        github_login: github_login.to_string(),
735                        admin,
736                    },
737                );
738                Ok(user_id)
739            }
740        }
741
742        async fn get_all_users(&self) -> Result<Vec<User>> {
743            unimplemented!()
744        }
745
746        async fn get_user_by_id(&self, id: UserId) -> Result<Option<User>> {
747            Ok(self.get_users_by_ids(vec![id]).await?.into_iter().next())
748        }
749
750        async fn get_users_by_ids(&self, ids: Vec<UserId>) -> Result<Vec<User>> {
751            self.background.simulate_random_delay().await;
752            let users = self.users.lock();
753            Ok(ids.iter().filter_map(|id| users.get(id).cloned()).collect())
754        }
755
756        async fn get_user_by_github_login(&self, _github_login: &str) -> Result<Option<User>> {
757            unimplemented!()
758        }
759
760        async fn set_user_is_admin(&self, _id: UserId, _is_admin: bool) -> Result<()> {
761            unimplemented!()
762        }
763
764        async fn destroy_user(&self, _id: UserId) -> Result<()> {
765            unimplemented!()
766        }
767
768        async fn create_access_token_hash(
769            &self,
770            _user_id: UserId,
771            _access_token_hash: &str,
772            _max_access_token_count: usize,
773        ) -> Result<()> {
774            unimplemented!()
775        }
776
777        async fn get_access_token_hashes(&self, _user_id: UserId) -> Result<Vec<String>> {
778            unimplemented!()
779        }
780
781        async fn find_org_by_slug(&self, _slug: &str) -> Result<Option<Org>> {
782            unimplemented!()
783        }
784
785        async fn create_org(&self, name: &str, slug: &str) -> Result<OrgId> {
786            self.background.simulate_random_delay().await;
787            let mut orgs = self.orgs.lock();
788            if orgs.values().any(|org| org.slug == slug) {
789                Err(anyhow!("org already exists"))
790            } else {
791                let org_id = OrgId(post_inc(&mut *self.next_org_id.lock()));
792                orgs.insert(
793                    org_id,
794                    Org {
795                        id: org_id,
796                        name: name.to_string(),
797                        slug: slug.to_string(),
798                    },
799                );
800                Ok(org_id)
801            }
802        }
803
804        async fn add_org_member(
805            &self,
806            org_id: OrgId,
807            user_id: UserId,
808            is_admin: bool,
809        ) -> Result<()> {
810            self.background.simulate_random_delay().await;
811            if !self.orgs.lock().contains_key(&org_id) {
812                return Err(anyhow!("org does not exist"));
813            }
814            if !self.users.lock().contains_key(&user_id) {
815                return Err(anyhow!("user does not exist"));
816            }
817
818            self.org_memberships
819                .lock()
820                .entry((org_id, user_id))
821                .or_insert(is_admin);
822            Ok(())
823        }
824
825        async fn create_org_channel(&self, org_id: OrgId, name: &str) -> Result<ChannelId> {
826            self.background.simulate_random_delay().await;
827            if !self.orgs.lock().contains_key(&org_id) {
828                return Err(anyhow!("org does not exist"));
829            }
830
831            let mut channels = self.channels.lock();
832            let channel_id = ChannelId(post_inc(&mut *self.next_channel_id.lock()));
833            channels.insert(
834                channel_id,
835                Channel {
836                    id: channel_id,
837                    name: name.to_string(),
838                    owner_id: org_id.0,
839                    owner_is_user: false,
840                },
841            );
842            Ok(channel_id)
843        }
844
845        async fn get_org_channels(&self, org_id: OrgId) -> Result<Vec<Channel>> {
846            self.background.simulate_random_delay().await;
847            Ok(self
848                .channels
849                .lock()
850                .values()
851                .filter(|channel| !channel.owner_is_user && channel.owner_id == org_id.0)
852                .cloned()
853                .collect())
854        }
855
856        async fn get_accessible_channels(&self, user_id: UserId) -> Result<Vec<Channel>> {
857            self.background.simulate_random_delay().await;
858            let channels = self.channels.lock();
859            let memberships = self.channel_memberships.lock();
860            Ok(channels
861                .values()
862                .filter(|channel| memberships.contains_key(&(channel.id, user_id)))
863                .cloned()
864                .collect())
865        }
866
867        async fn can_user_access_channel(
868            &self,
869            user_id: UserId,
870            channel_id: ChannelId,
871        ) -> Result<bool> {
872            self.background.simulate_random_delay().await;
873            Ok(self
874                .channel_memberships
875                .lock()
876                .contains_key(&(channel_id, user_id)))
877        }
878
879        async fn add_channel_member(
880            &self,
881            channel_id: ChannelId,
882            user_id: UserId,
883            is_admin: bool,
884        ) -> Result<()> {
885            self.background.simulate_random_delay().await;
886            if !self.channels.lock().contains_key(&channel_id) {
887                return Err(anyhow!("channel does not exist"));
888            }
889            if !self.users.lock().contains_key(&user_id) {
890                return Err(anyhow!("user does not exist"));
891            }
892
893            self.channel_memberships
894                .lock()
895                .entry((channel_id, user_id))
896                .or_insert(is_admin);
897            Ok(())
898        }
899
900        async fn create_channel_message(
901            &self,
902            channel_id: ChannelId,
903            sender_id: UserId,
904            body: &str,
905            timestamp: OffsetDateTime,
906            nonce: u128,
907        ) -> Result<MessageId> {
908            self.background.simulate_random_delay().await;
909            if !self.channels.lock().contains_key(&channel_id) {
910                return Err(anyhow!("channel does not exist"));
911            }
912            if !self.users.lock().contains_key(&sender_id) {
913                return Err(anyhow!("user does not exist"));
914            }
915
916            let mut messages = self.channel_messages.lock();
917            if let Some(message) = messages
918                .values()
919                .find(|message| message.nonce.as_u128() == nonce)
920            {
921                Ok(message.id)
922            } else {
923                let message_id = MessageId(post_inc(&mut *self.next_channel_message_id.lock()));
924                messages.insert(
925                    message_id,
926                    ChannelMessage {
927                        id: message_id,
928                        channel_id,
929                        sender_id,
930                        body: body.to_string(),
931                        sent_at: timestamp,
932                        nonce: Uuid::from_u128(nonce),
933                    },
934                );
935                Ok(message_id)
936            }
937        }
938
939        async fn get_channel_messages(
940            &self,
941            channel_id: ChannelId,
942            count: usize,
943            before_id: Option<MessageId>,
944        ) -> Result<Vec<ChannelMessage>> {
945            let mut messages = self
946                .channel_messages
947                .lock()
948                .values()
949                .rev()
950                .filter(|message| {
951                    message.channel_id == channel_id
952                        && message.id < before_id.unwrap_or(MessageId::MAX)
953                })
954                .take(count)
955                .cloned()
956                .collect::<Vec<_>>();
957            messages.sort_unstable_by_key(|message| message.id);
958            Ok(messages)
959        }
960
961        async fn teardown(&self, _: &str) {}
962    }
963}