Files
thoughts/crates/adapters/postgres-search/src/lib.rs
Gabriel Kaszewski 9aee4ceb6d
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feat: v2 rewrite — hexagonal arch, ActivityPub federation, NATS, deployment-ready (#1)
2026-05-16 09:42:40 +00:00

373 lines
12 KiB
Rust

use async_trait::async_trait;
use chrono::{DateTime, Utc};
use domain::{
errors::DomainError,
models::{
feed::{FeedEntry, PageParams, Paginated},
thought::{Thought, Visibility},
user::User,
},
ports::SearchPort,
value_objects::{Content, Email, PasswordHash, ThoughtId, UserId, Username},
};
use postgres::user::{UserRow, USER_SELECT};
use sqlx::PgPool;
pub struct PgSearchRepository {
pool: PgPool,
}
impl PgSearchRepository {
pub fn new(pool: PgPool) -> Self {
Self { pool }
}
}
#[derive(sqlx::FromRow)]
struct FeedRow {
thought_id: uuid::Uuid,
t_user_id: uuid::Uuid,
content: String,
in_reply_to_id: Option<uuid::Uuid>,
visibility: String,
content_warning: Option<String>,
sensitive: bool,
t_local: bool,
thought_created_at: DateTime<Utc>,
updated_at: Option<DateTime<Utc>>,
author_id: uuid::Uuid,
username: String,
email: String,
password_hash: String,
display_name: Option<String>,
bio: Option<String>,
avatar_url: Option<String>,
header_url: Option<String>,
custom_css: Option<String>,
author_local: bool,
author_created_at: DateTime<Utc>,
author_updated_at: DateTime<Utc>,
like_count: i64,
boost_count: i64,
reply_count: i64,
liked_by_viewer: bool,
boosted_by_viewer: bool,
}
fn feed_select(viewer: Option<uuid::Uuid>) -> String {
let viewer_checks = match viewer {
Some(uid) => format!(
"EXISTS(SELECT 1 FROM likes WHERE user_id='{uid}' AND thought_id=t.id) AS liked_by_viewer,\n\
EXISTS(SELECT 1 FROM boosts WHERE user_id='{uid}' AND thought_id=t.id) AS boosted_by_viewer"
),
None => "false AS liked_by_viewer, false AS boosted_by_viewer".to_string(),
};
format!(
"\n SELECT\n\
t.id AS thought_id, t.user_id AS t_user_id, t.content,\n\
t.in_reply_to_id,\n\
t.visibility, t.content_warning, t.sensitive, t.local AS t_local,\n\
t.created_at AS thought_created_at, t.updated_at,\n\
u.id AS author_id, u.username, u.email, u.password_hash,\n\
u.display_name, u.bio, u.avatar_url, u.header_url, u.custom_css,\n\
u.local AS author_local,\n\
u.created_at AS author_created_at, u.updated_at AS author_updated_at,\n\
(SELECT COUNT(*) FROM likes l WHERE l.thought_id=t.id) AS like_count,\n\
(SELECT COUNT(*) FROM boosts b WHERE b.thought_id=t.id) AS boost_count,\n\
(SELECT COUNT(*) FROM thoughts r WHERE r.in_reply_to_id=t.id) AS reply_count,\n\
{viewer_checks}\n\
FROM thoughts t JOIN users u ON u.id=t.user_id"
)
}
fn row_to_entry(r: FeedRow, viewer: Option<uuid::Uuid>) -> Result<FeedEntry, DomainError> {
let thought = Thought {
id: ThoughtId::from_uuid(r.thought_id),
user_id: UserId::from_uuid(r.t_user_id),
content: Content::new_remote(r.content),
in_reply_to_id: r.in_reply_to_id.map(ThoughtId::from_uuid),
visibility: Visibility::from_db_str(&r.visibility)?,
content_warning: r.content_warning,
sensitive: r.sensitive,
local: r.t_local,
created_at: r.thought_created_at,
updated_at: r.updated_at,
};
let author = User {
id: UserId::from_uuid(r.author_id),
username: Username::from_trusted(r.username),
email: Email::from_trusted(r.email),
password_hash: PasswordHash(r.password_hash),
display_name: r.display_name,
bio: r.bio,
avatar_url: r.avatar_url,
header_url: r.header_url,
custom_css: r.custom_css,
local: r.author_local,
created_at: r.author_created_at,
updated_at: r.author_updated_at,
};
Ok(FeedEntry {
thought,
author,
stats: domain::models::feed::EngagementStats {
like_count: r.like_count,
boost_count: r.boost_count,
reply_count: r.reply_count,
},
viewer: viewer.map(|_| domain::models::feed::ViewerContext {
liked: r.liked_by_viewer,
boosted: r.boosted_by_viewer,
}),
})
}
#[async_trait]
impl SearchPort for PgSearchRepository {
async fn search_thoughts(
&self,
query: &str,
page: &PageParams,
viewer_id: Option<&UserId>,
) -> Result<Paginated<FeedEntry>, DomainError> {
let viewer = viewer_id.map(|v| v.as_uuid());
let select = feed_select(viewer);
let total: i64 = sqlx::query_scalar(
"SELECT COUNT(*) FROM thoughts t
WHERE t.content % $1 AND t.visibility='public'",
)
.bind(query)
.fetch_one(&self.pool)
.await
.map_err(|e| DomainError::Internal(e.to_string()))?;
let sql = format!(
"{select}
WHERE t.content % $1 AND t.visibility='public'
ORDER BY similarity(t.content, $1) DESC
LIMIT $2 OFFSET $3"
);
let rows = sqlx::query_as::<_, FeedRow>(&sql)
.bind(query)
.bind(page.limit())
.bind(page.offset())
.fetch_all(&self.pool)
.await
.map_err(|e| DomainError::Internal(e.to_string()))?;
Ok(Paginated {
items: rows
.into_iter()
.map(|r| row_to_entry(r, viewer))
.collect::<Result<Vec<_>, _>>()?,
total,
page: page.page,
per_page: page.per_page,
})
}
async fn search_users(
&self,
query: &str,
page: &PageParams,
) -> Result<Paginated<User>, DomainError> {
let total: i64 = sqlx::query_scalar(
"SELECT COUNT(*) FROM users u
WHERE u.local=true AND (u.username % $1 OR u.display_name % $1)",
)
.bind(query)
.fetch_one(&self.pool)
.await
.map_err(|e| DomainError::Internal(e.to_string()))?;
let sql = format!(
"{USER_SELECT}
WHERE local=true AND (username % $1 OR display_name % $1)
ORDER BY similarity(username || ' ' || COALESCE(display_name,''), $1) DESC
LIMIT $2 OFFSET $3"
);
let rows = sqlx::query_as::<_, UserRow>(&sql)
.bind(query)
.bind(page.limit())
.bind(page.offset())
.fetch_all(&self.pool)
.await
.map_err(|e| DomainError::Internal(e.to_string()))?;
Ok(Paginated {
items: rows.into_iter().map(User::from).collect(),
total,
page: page.page,
per_page: page.per_page,
})
}
}
#[cfg(test)]
mod tests {
use super::*;
use domain::{
models::{
thought::{Thought, Visibility},
user::User,
},
ports::{SearchPort, ThoughtRepository, UserWriter},
value_objects::*,
};
async fn seed_thought(pool: &sqlx::PgPool, username: &str, content: &str) -> (User, Thought) {
use postgres::{thought::PgThoughtRepository, user::PgUserRepository};
let urepo = PgUserRepository::new(pool.clone());
let trepo = PgThoughtRepository::new(pool.clone());
let u = User::new_local(
UserId::new(),
Username::new(username).unwrap(),
Email::new(format!("{username}@ex.com")).unwrap(),
PasswordHash("h".into()),
);
urepo.save(&u).await.unwrap();
let t = Thought::new_local(
ThoughtId::new(),
u.id.clone(),
Content::new_local(content).unwrap(),
None,
Visibility::Public,
None,
false,
);
trepo.save(&t).await.unwrap();
(u, t)
}
#[sqlx::test(migrations = "../postgres/migrations")]
async fn search_thoughts_finds_by_keyword(pool: sqlx::PgPool) {
seed_thought(&pool, "alice", "hello world").await;
seed_thought(&pool, "bob", "goodbye universe").await;
let repo = PgSearchRepository::new(pool);
let result = repo
.search_thoughts(
"hello world",
&PageParams {
page: 1,
per_page: 20,
},
None,
)
.await
.unwrap();
assert_eq!(result.total, 1);
assert_eq!(result.items[0].thought.content.as_str(), "hello world");
}
#[sqlx::test(migrations = "../postgres/migrations")]
async fn search_users_finds_by_username(pool: sqlx::PgPool) {
use postgres::user::PgUserRepository;
let urepo = PgUserRepository::new(pool.clone());
let alice = User::new_local(
UserId::new(),
Username::new("alice_search").unwrap(),
Email::new("alice@ex.com").unwrap(),
PasswordHash("h".into()),
);
urepo.save(&alice).await.unwrap();
let repo = PgSearchRepository::new(pool);
let result = repo
.search_users(
"alice",
&PageParams {
page: 1,
per_page: 20,
},
)
.await
.unwrap();
assert!(!result.items.is_empty());
assert!(result
.items
.iter()
.any(|u| u.username.as_str() == "alice_search"));
}
#[sqlx::test(migrations = "../postgres/migrations")]
async fn search_thoughts_returns_empty_for_no_match(pool: sqlx::PgPool) {
seed_thought(&pool, "alice", "hello world").await;
let repo = PgSearchRepository::new(pool);
let result = repo
.search_thoughts(
"zzzzzzzzz",
&PageParams {
page: 1,
per_page: 20,
},
None,
)
.await
.unwrap();
assert_eq!(result.total, 0);
}
#[sqlx::test(migrations = "../postgres/migrations")]
async fn search_thoughts_viewer_context(pool: sqlx::PgPool) {
use domain::models::social::Like;
use domain::ports::{LikeRepository, UserWriter};
use domain::value_objects::LikeId;
use postgres::{like::PgLikeRepository, user::PgUserRepository};
let (alice, thought) = seed_thought(&pool, "alice", "hello world").await;
// alice likes her own thought
let like_repo = PgLikeRepository::new(pool.clone());
like_repo
.save(&Like {
id: LikeId::new(),
user_id: alice.id.clone(),
thought_id: thought.id.clone(),
ap_id: None,
created_at: chrono::Utc::now(),
})
.await
.unwrap();
let repo = PgSearchRepository::new(pool);
// with viewer — should see liked = true
let authed = repo
.search_thoughts(
"hello",
&PageParams {
page: 1,
per_page: 20,
},
Some(&alice.id),
)
.await
.unwrap();
assert_eq!(authed.items.len(), 1);
let ctx = authed.items[0]
.viewer
.as_ref()
.expect("viewer context present");
assert!(ctx.liked, "alice should see the thought as liked");
assert!(!ctx.boosted);
// without viewer — viewer should be None
let anon = repo
.search_thoughts(
"hello",
&PageParams {
page: 1,
per_page: 20,
},
None,
)
.await
.unwrap();
assert_eq!(anon.items.len(), 1);
assert!(
anon.items[0].viewer.is_none(),
"anonymous request has no viewer context"
);
}
}