crates/hub/src/db/notify.rs at 5d90e0e045e2 · andymccall/oxygenhub

# 5d90e0e045e2 oxygenhub / crates / hub / src / db / notify.rs

12.2 KiB · Rust · last changed Postgres, step 1: every query numbers its placeholders $1, $2, ... 20 days ago source blame history raw

//! Notifications, watching, subscriptions and the search index (hub spec
//! §10, §11).

use super::{now_ms, Pool};
use sqlx::FromRow;

#[derive(Clone, Debug, FromRow)]
pub struct Notification {
    pub id: i64,
    pub account_id: i64,
    pub at_ms: i64,
    pub kind: String,
    pub title: String,
    pub url: String,
    pub actor: String,
    pub read: bool,
    pub repo_id: Option<i64>,
    pub thread: String,
    pub reason: String,
    pub done: bool,
}

/// Why someone is told: they take part in the thread, or only watch the repository.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum Reason {
    Participating,
    Watching,
}

impl Reason {
    pub fn as_str(self) -> &'static str {
        match self {
            Reason::Participating => "participating",
            Reason::Watching => "watching",
        }
    }
}

/// The thread a notification belongs to: its page, without a fragment.
pub fn thread_of(url: &str) -> &str {
    url.split('#').next().unwrap_or(url)
}

/// A notification to record.
pub struct New<'a> {
    pub account_id: i64,
    pub repo_id: Option<i64>,
    pub reason: Reason,
    pub kind: &'a str,
    pub title: &'a str,
    pub url: &'a str,
    pub actor: &'a str,
}

pub async fn add(pool: &Pool, n: New<'_>) -> sqlx::Result<()> {
    let New { account_id, repo_id, reason, kind, title, url, actor } = n;
    // A new event brings a thread that was set aside back to the inbox.
    sqlx::query("UPDATE notifications SET done = 0 WHERE account_id = $1 AND thread = $2 AND done = 1")
        .bind(account_id)
        .bind(thread_of(url))
        .execute(pool)
        .await?;
    sqlx::query("INSERT INTO notifications (account_id, at_ms, kind, title, url, actor, repo_id, thread, reason) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)")
        .bind(account_id)
        .bind(now_ms())
        .bind(kind)
        .bind(title)
        .bind(url)
        .bind(actor)
        .bind(repo_id)
        .bind(thread_of(url))
        .bind(reason.as_str())
        .execute(pool)
        .await?;
    Ok(())
}

/// One inbox row: a thread, shown by its newest notification.
#[derive(Clone, Debug, FromRow)]
pub struct Thread {
    /// The newest notification's id.
    pub id: i64,
    pub at_ms: i64,
    pub kind: String,
    pub title: String,
    pub url: String,
    pub actor: String,
    pub thread: String,
    pub repo_id: Option<i64>,
    pub repo: Option<String>,
    pub count: i64,
    pub unread: i64,
    pub participating: bool,
    pub done: bool,
}

/// What the inbox shows.
#[derive(Clone, Debug, Default)]
pub struct Filter {
    pub done: bool,
    pub unread_only: bool,
    /// `participating` or `watching`.
    pub reason: Option<String>,
    /// A kind or its family (`issue` matches `issue.closed`).
    pub kind: Option<String>,
    pub repo_id: Option<i64>,
}

pub async fn threads(pool: &Pool, account_id: i64, f: &Filter, limit: i64) -> sqlx::Result<Vec<Thread>> {
    // SQLite takes bare columns from the row holding MAX(at_ms): the newest.
    let mut sql = String::from(
        "SELECT n.id, MAX(n.at_ms) AS at_ms, n.kind, n.title, n.url, n.actor, n.thread, n.repo_id, \
         (SELECT r.owner || '/' || r.name FROM repositories r WHERE r.id = n.repo_id) AS repo, \
         COUNT(*) AS count, SUM(n.read = 0) AS unread, SUM(n.reason = 'participating') > 0 AS participating, n.done \
         FROM notifications n WHERE n.account_id = $1 AND n.done = $2",
    );
    // Placeholders numbered as they are added: $1 and $2 above.
    let mut next = 3;
    if f.kind.is_some() {
        sql.push_str(&format!(" AND (n.kind = ${} OR n.kind LIKE ${} || '.%')", next, next + 1));
        next += 2;
    }
    if f.repo_id.is_some() {
        sql.push_str(&format!(" AND n.repo_id = ${next}"));
        next += 1;
    }
    sql.push_str(" GROUP BY n.thread HAVING 1");
    if f.unread_only {
        sql.push_str(" AND SUM(n.read = 0) > 0");
    }
    match f.reason.as_deref() {
        Some("participating") => sql.push_str(" AND SUM(n.reason = 'participating') > 0"),
        Some("watching") => sql.push_str(" AND SUM(n.reason = 'participating') = 0"),
        _ => {}
    }
    sql.push_str(&format!(" ORDER BY at_ms DESC LIMIT ${next}"));
    let mut q = sqlx::query_as::<_, Thread>(&sql).bind(account_id).bind(f.done);
    if let Some(k) = &f.kind {
        q = q.bind(k).bind(k);
    }
    if let Some(r) = f.repo_id {
        q = q.bind(r);
    }
    q.bind(limit).fetch_all(pool).await
}

/// Mark a thread read or unread, done or back in the inbox.
pub async fn set_thread(pool: &Pool, account_id: i64, thread: &str, read: Option<bool>, done: Option<bool>) -> sqlx::Result<()> {
    if let Some(r) = read {
        if r {
            sqlx::query("UPDATE notifications SET read = 1 WHERE account_id = $1 AND thread = $2")
                .bind(account_id)
                .bind(thread)
                .execute(pool)
                .await?;
        } else {
            // Unread: the newest notification of the thread only.
            sqlx::query("UPDATE notifications SET read = 0 WHERE id = (SELECT id FROM notifications WHERE account_id = $1 AND thread = $2 ORDER BY at_ms DESC, id DESC LIMIT 1)")
                .bind(account_id)
                .bind(thread)
                .execute(pool)
                .await?;
        }
    }
    if let Some(d) = done {
        let read_too = if d { ", read = 1" } else { "" };
        sqlx::query(&format!("UPDATE notifications SET done = $1{read_too} WHERE account_id = $2 AND thread = $3"))
            .bind(d)
            .bind(account_id)
            .bind(thread)
            .execute(pool)
            .await?;
    }
    Ok(())
}

/// The notification with this id, if it is the account's.
pub async fn get(pool: &Pool, account_id: i64, id: i64) -> sqlx::Result<Option<Notification>> {
    sqlx::query_as("SELECT * FROM notifications WHERE account_id = $1 AND id = $2").bind(account_id).bind(id).fetch_optional(pool).await
}

pub async fn inbox(pool: &Pool, account_id: i64, limit: i64) -> sqlx::Result<Vec<Notification>> {
    sqlx::query_as("SELECT * FROM notifications WHERE account_id = $1 ORDER BY read, at_ms DESC, id DESC LIMIT $2")
        .bind(account_id)
        .bind(limit)
        .fetch_all(pool)
        .await
}

pub async fn unread(pool: &Pool, account_id: i64) -> sqlx::Result<i64> {
    sqlx::query_scalar("SELECT COUNT(*) FROM notifications WHERE account_id = $1 AND read = 0 AND done = 0")
        .bind(account_id)
        .fetch_one(pool)
        .await
}

pub async fn mark_read(pool: &Pool, account_id: i64, id: Option<i64>) -> sqlx::Result<()> {
    match id {
        Some(id) => {
            sqlx::query("UPDATE notifications SET read = 1 WHERE account_id = $1 AND id = $2")
                .bind(account_id)
                .bind(id)
                .execute(pool)
                .await?
        }
        None => sqlx::query("UPDATE notifications SET read = 1 WHERE account_id = $1").bind(account_id).execute(pool).await?,
    };
    Ok(())
}

// ---------------------------------------------------------------- watching

/// The accounts that own repository `repo_id`: its owner, or the owners of
/// the organisation that owns it. They watch it unless they mute it
/// (oxygenhub#183).
pub async fn owners_of(pool: &Pool, repo_id: i64) -> sqlx::Result<Vec<i64>> {
    let owner: Option<String> =
        sqlx::query_scalar("SELECT owner FROM repositories WHERE id = $1").bind(repo_id).fetch_optional(pool).await?;
    let Some(owner) = owner else { return Ok(Vec::new()) };
    if let Some(a) = super::accounts::account_by_name(pool, &owner).await? {
        return Ok(vec![a.id]);
    }
    match super::accounts::org_by_name(pool, &owner).await? {
        Some(o) => {
            Ok(super::accounts::org_members(pool, o.id).await?.into_iter().filter(|(_, r)| r == "owner").map(|(a, _)| a.id).collect())
        }
        None => Ok(Vec::new()),
    }
}

/// Whether `account_id` watches `repo_id`: a watch it chose, or, for an
/// owner, unless it muted it.
pub async fn watching(pool: &Pool, account_id: i64, repo_id: i64) -> sqlx::Result<bool> {
    let muted: Option<bool> = sqlx::query_scalar("SELECT muted FROM watches WHERE account_id = $1 AND repo_id = $2")
        .bind(account_id)
        .bind(repo_id)
        .fetch_optional(pool)
        .await?;
    match muted {
        Some(m) => Ok(!m),
        None => Ok(owners_of(pool, repo_id).await?.contains(&account_id)),
    }
}

/// Watch `repo_id`, or stop: for an owner, stopping mutes it.
pub async fn set_watch(pool: &Pool, account_id: i64, repo_id: i64, on: bool) -> sqlx::Result<()> {
    sqlx::query("INSERT INTO watches (account_id, repo_id, muted) VALUES ($1, $2, $3) ON CONFLICT (account_id, repo_id) DO UPDATE SET muted = excluded.muted")
        .bind(account_id)
        .bind(repo_id)
        .bind(!on)
        .execute(pool)
        .await?;
    Ok(())
}

/// Everyone watching `repo_id`: those who chose to, and its owners who
/// have not muted it.
pub async fn watchers(pool: &Pool, repo_id: i64) -> sqlx::Result<Vec<i64>> {
    let rows: Vec<(i64, bool)> =
        sqlx::query_as("SELECT account_id, muted FROM watches WHERE repo_id = $1").bind(repo_id).fetch_all(pool).await?;
    let mut out: Vec<i64> = rows.iter().filter(|(_, m)| !m).map(|(a, _)| *a).collect();
    for o in owners_of(pool, repo_id).await? {
        if !rows.iter().any(|(a, _)| *a == o) && !out.contains(&o) {
            out.push(o);
        }
    }
    Ok(out)
}

pub async fn subscribe(pool: &Pool, account_id: i64, kind: &str, target_id: i64) -> sqlx::Result<()> {
    sqlx::query("INSERT OR IGNORE INTO subscriptions (account_id, kind, target_id) VALUES ($1, $2, $3)")
        .bind(account_id)
        .bind(kind)
        .bind(target_id)
        .execute(pool)
        .await?;
    Ok(())
}

pub async fn unsubscribe(pool: &Pool, account_id: i64, kind: &str, target_id: i64) -> sqlx::Result<()> {
    sqlx::query("DELETE FROM subscriptions WHERE account_id = $1 AND kind = $2 AND target_id = $3")
        .bind(account_id)
        .bind(kind)
        .bind(target_id)
        .execute(pool)
        .await?;
    Ok(())
}

pub async fn subscribed(pool: &Pool, account_id: i64, kind: &str, target_id: i64) -> sqlx::Result<bool> {
    let n: i64 = sqlx::query_scalar("SELECT COUNT(*) FROM subscriptions WHERE account_id = $1 AND kind = $2 AND target_id = $3")
        .bind(account_id)
        .bind(kind)
        .bind(target_id)
        .fetch_one(pool)
        .await?;
    Ok(n > 0)
}

pub async fn subscribers(pool: &Pool, kind: &str, target_id: i64) -> sqlx::Result<Vec<i64>> {
    sqlx::query_scalar("SELECT account_id FROM subscriptions WHERE kind = $1 AND target_id = $2")
        .bind(kind)
        .bind(target_id)
        .fetch_all(pool)
        .await
}

// ------------------------------------------------------------------ search

#[derive(Clone, Debug, FromRow)]
pub struct Hit {
    pub kind: String,
    pub repo_id: i64,
    pub target_id: i64,
    pub number: i64,
    pub title: String,
    pub snippet: String,
}

/// Replace the indexed text of one thread (title plus body plus comments).
pub async fn index(pool: &Pool, kind: &str, repo_id: i64, target_id: i64, number: i64, title: &str, body: &str) -> sqlx::Result<()> {
    sqlx::query("DELETE FROM search WHERE kind = $1 AND target_id = $2").bind(kind).bind(target_id).execute(pool).await?;
    sqlx::query("INSERT INTO search (kind, repo_id, target_id, number, title, body) VALUES ($1, $2, $3, $4, $5, $6)")
        .bind(kind)
        .bind(repo_id)
        .bind(target_id)
        .bind(number)
        .bind(title)
        .bind(body)
        .execute(pool)
        .await?;
    Ok(())
}

/// Full-text hits, best first. The query is quoted so punctuation cannot
/// reach the FTS5 parser.
pub async fn search(pool: &Pool, query: &str, repo_id: Option<i64>, limit: i64) -> sqlx::Result<Vec<Hit>> {
    let terms: Vec<String> = query.split_whitespace().map(|t| format!("\"{}\"", t.replace('"', ""))).collect();
    if terms.is_empty() {
        return Ok(vec![]);
    }
    let q = terms.join(" ");
    let sql = "SELECT kind, repo_id, target_id, number, title, snippet(search, 5, '<mark>', '</mark>', '…', 12) AS snippet FROM search WHERE search MATCH $1 AND ($2 IS NULL OR repo_id = $3) ORDER BY rank LIMIT $4";
    sqlx::query_as(sql).bind(q).bind(repo_id).bind(repo_id).bind(limit).fetch_all(pool).await
}

`/`	Search
`g` `c`	Code
`g` `h`	History
`g` `b`	Bookmarks
`g` `t`	Trust
`y`	Permalink to this state (files and trees)
`?`	This sheet

1	//! Notifications, watching, subscriptions and the search index (hub spec
2	//! §10, §11).
3
4	use super::{now_ms, Pool};
5	use sqlx::FromRow;
6
7	#[derive(Clone, Debug, FromRow)]
8	pub struct Notification {
9	pub id: i64,
10	pub account_id: i64,
11	pub at_ms: i64,
12	pub kind: String,
13	pub title: String,
14	pub url: String,
15	pub actor: String,
16	pub read: bool,
17	pub repo_id: Option<i64>,
18	pub thread: String,
19	pub reason: String,
20	pub done: bool,
21	}
22
23	/// Why someone is told: they take part in the thread, or only watch the repository.
24	#[derive(Clone, Copy, Debug, PartialEq, Eq)]
25	pub enum Reason {
26	Participating,
27	Watching,
28	}
29
30	impl Reason {
31	pub fn as_str(self) -> &'static str {
32	match self {
33	Reason::Participating => "participating",
34	Reason::Watching => "watching",
35	}
36	}
37	}
38
39	/// The thread a notification belongs to: its page, without a fragment.
40	pub fn thread_of(url: &str) -> &str {
41	url.split('#').next().unwrap_or(url)
42	}
43
44	/// A notification to record.
45	pub struct New<'a> {
46	pub account_id: i64,
47	pub repo_id: Option<i64>,
48	pub reason: Reason,
49	pub kind: &'a str,
50	pub title: &'a str,
51	pub url: &'a str,
52	pub actor: &'a str,
53	}
54
55	pub async fn add(pool: &Pool, n: New<'_>) -> sqlx::Result<()> {
56	let New { account_id, repo_id, reason, kind, title, url, actor } = n;
57	// A new event brings a thread that was set aside back to the inbox.
58	sqlx::query("UPDATE notifications SET done = 0 WHERE account_id = $1 AND thread = $2 AND done = 1")
59	.bind(account_id)
60	.bind(thread_of(url))
61	.execute(pool)
62	.await?;
63	sqlx::query("INSERT INTO notifications (account_id, at_ms, kind, title, url, actor, repo_id, thread, reason) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)")
64	.bind(account_id)
65	.bind(now_ms())
66	.bind(kind)
67	.bind(title)
68	.bind(url)
69	.bind(actor)
70	.bind(repo_id)
71	.bind(thread_of(url))
72	.bind(reason.as_str())
73	.execute(pool)
74	.await?;
75	Ok(())
76	}
77
78	/// One inbox row: a thread, shown by its newest notification.
79	#[derive(Clone, Debug, FromRow)]
80	pub struct Thread {
81	/// The newest notification's id.
82	pub id: i64,
83	pub at_ms: i64,
84	pub kind: String,
85	pub title: String,
86	pub url: String,
87	pub actor: String,
88	pub thread: String,
89	pub repo_id: Option<i64>,
90	pub repo: Option<String>,
91	pub count: i64,
92	pub unread: i64,
93	pub participating: bool,
94	pub done: bool,
95	}
96
97	/// What the inbox shows.
98	#[derive(Clone, Debug, Default)]
99	pub struct Filter {
100	pub done: bool,
101	pub unread_only: bool,
102	/// `participating` or `watching`.
103	pub reason: Option<String>,
104	/// A kind or its family (`issue` matches `issue.closed`).
105	pub kind: Option<String>,
106	pub repo_id: Option<i64>,
107	}
108
109	pub async fn threads(pool: &Pool, account_id: i64, f: &Filter, limit: i64) -> sqlx::Result<Vec<Thread>> {
110	// SQLite takes bare columns from the row holding MAX(at_ms): the newest.
111	let mut sql = String::from(
112	"SELECT n.id, MAX(n.at_ms) AS at_ms, n.kind, n.title, n.url, n.actor, n.thread, n.repo_id, \
113	(SELECT r.owner \|\| '/' \|\| r.name FROM repositories r WHERE r.id = n.repo_id) AS repo, \
114	COUNT(*) AS count, SUM(n.read = 0) AS unread, SUM(n.reason = 'participating') > 0 AS participating, n.done \
115	FROM notifications n WHERE n.account_id = $1 AND n.done = $2",
116	);
117	// Placeholders numbered as they are added: $1 and $2 above.
118	let mut next = 3;
119	if f.kind.is_some() {
120	sql.push_str(&format!(" AND (n.kind = ${} OR n.kind LIKE ${} \|\| '.%')", next, next + 1));
121	next += 2;
122	}
123	if f.repo_id.is_some() {
124	sql.push_str(&format!(" AND n.repo_id = ${next}"));
125	next += 1;
126	}
127	sql.push_str(" GROUP BY n.thread HAVING 1");
128	if f.unread_only {
129	sql.push_str(" AND SUM(n.read = 0) > 0");
130	}
131	match f.reason.as_deref() {
132	Some("participating") => sql.push_str(" AND SUM(n.reason = 'participating') > 0"),
133	Some("watching") => sql.push_str(" AND SUM(n.reason = 'participating') = 0"),
134	_ => {}
135	}
136	sql.push_str(&format!(" ORDER BY at_ms DESC LIMIT ${next}"));
137	let mut q = sqlx::query_as::<_, Thread>(&sql).bind(account_id).bind(f.done);
138	if let Some(k) = &f.kind {
139	q = q.bind(k).bind(k);
140	}
141	if let Some(r) = f.repo_id {
142	q = q.bind(r);
143	}
144	q.bind(limit).fetch_all(pool).await
145	}
146
147	/// Mark a thread read or unread, done or back in the inbox.
148	pub async fn set_thread(pool: &Pool, account_id: i64, thread: &str, read: Option<bool>, done: Option<bool>) -> sqlx::Result<()> {
149	if let Some(r) = read {
150	if r {
151	sqlx::query("UPDATE notifications SET read = 1 WHERE account_id = $1 AND thread = $2")
152	.bind(account_id)
153	.bind(thread)
154	.execute(pool)
155	.await?;
156	} else {
157	// Unread: the newest notification of the thread only.
158	sqlx::query("UPDATE notifications SET read = 0 WHERE id = (SELECT id FROM notifications WHERE account_id = $1 AND thread = $2 ORDER BY at_ms DESC, id DESC LIMIT 1)")
159	.bind(account_id)
160	.bind(thread)
161	.execute(pool)
162	.await?;
163	}
164	}
165	if let Some(d) = done {
166	let read_too = if d { ", read = 1" } else { "" };
167	sqlx::query(&format!("UPDATE notifications SET done = $1{read_too} WHERE account_id = $2 AND thread = $3"))
168	.bind(d)
169	.bind(account_id)
170	.bind(thread)
171	.execute(pool)
172	.await?;
173	}
174	Ok(())
175	}
176
177	/// The notification with this id, if it is the account's.
178	pub async fn get(pool: &Pool, account_id: i64, id: i64) -> sqlx::Result<Option<Notification>> {
179	sqlx::query_as("SELECT * FROM notifications WHERE account_id = $1 AND id = $2").bind(account_id).bind(id).fetch_optional(pool).await
180	}
181
182	pub async fn inbox(pool: &Pool, account_id: i64, limit: i64) -> sqlx::Result<Vec<Notification>> {
183	sqlx::query_as("SELECT * FROM notifications WHERE account_id = $1 ORDER BY read, at_ms DESC, id DESC LIMIT $2")
184	.bind(account_id)
185	.bind(limit)
186	.fetch_all(pool)
187	.await
188	}
189
190	pub async fn unread(pool: &Pool, account_id: i64) -> sqlx::Result<i64> {
191	sqlx::query_scalar("SELECT COUNT(*) FROM notifications WHERE account_id = $1 AND read = 0 AND done = 0")
192	.bind(account_id)
193	.fetch_one(pool)
194	.await
195	}
196
197	pub async fn mark_read(pool: &Pool, account_id: i64, id: Option<i64>) -> sqlx::Result<()> {
198	match id {
199	Some(id) => {
200	sqlx::query("UPDATE notifications SET read = 1 WHERE account_id = $1 AND id = $2")
201	.bind(account_id)
202	.bind(id)
203	.execute(pool)
204	.await?
205	}
206	None => sqlx::query("UPDATE notifications SET read = 1 WHERE account_id = $1").bind(account_id).execute(pool).await?,
207	};
208	Ok(())
209	}
210
211	// ---------------------------------------------------------------- watching
212
213	/// The accounts that own repository `repo_id`: its owner, or the owners of
214	/// the organisation that owns it. They watch it unless they mute it
215	/// (oxygenhub#183).
216	pub async fn owners_of(pool: &Pool, repo_id: i64) -> sqlx::Result<Vec<i64>> {
217	let owner: Option<String> =
218	sqlx::query_scalar("SELECT owner FROM repositories WHERE id = $1").bind(repo_id).fetch_optional(pool).await?;
219	let Some(owner) = owner else { return Ok(Vec::new()) };
220	if let Some(a) = super::accounts::account_by_name(pool, &owner).await? {
221	return Ok(vec![a.id]);
222	}
223	match super::accounts::org_by_name(pool, &owner).await? {
224	Some(o) => {
225	Ok(super::accounts::org_members(pool, o.id).await?.into_iter().filter(\|(_, r)\| r == "owner").map(\|(a, _)\| a.id).collect())
226	}
227	None => Ok(Vec::new()),
228	}
229	}
230
231	/// Whether `account_id` watches `repo_id`: a watch it chose, or, for an
232	/// owner, unless it muted it.
233	pub async fn watching(pool: &Pool, account_id: i64, repo_id: i64) -> sqlx::Result<bool> {
234	let muted: Option<bool> = sqlx::query_scalar("SELECT muted FROM watches WHERE account_id = $1 AND repo_id = $2")
235	.bind(account_id)
236	.bind(repo_id)
237	.fetch_optional(pool)
238	.await?;
239	match muted {
240	Some(m) => Ok(!m),
241	None => Ok(owners_of(pool, repo_id).await?.contains(&account_id)),
242	}
243	}
244
245	/// Watch `repo_id`, or stop: for an owner, stopping mutes it.
246	pub async fn set_watch(pool: &Pool, account_id: i64, repo_id: i64, on: bool) -> sqlx::Result<()> {
247	sqlx::query("INSERT INTO watches (account_id, repo_id, muted) VALUES ($1, $2, $3) ON CONFLICT (account_id, repo_id) DO UPDATE SET muted = excluded.muted")
248	.bind(account_id)
249	.bind(repo_id)
250	.bind(!on)
251	.execute(pool)
252	.await?;
253	Ok(())
254	}
255
256	/// Everyone watching `repo_id`: those who chose to, and its owners who
257	/// have not muted it.
258	pub async fn watchers(pool: &Pool, repo_id: i64) -> sqlx::Result<Vec<i64>> {
259	let rows: Vec<(i64, bool)> =
260	sqlx::query_as("SELECT account_id, muted FROM watches WHERE repo_id = $1").bind(repo_id).fetch_all(pool).await?;
261	let mut out: Vec<i64> = rows.iter().filter(\|(_, m)\| !m).map(\|(a, _)\| *a).collect();
262	for o in owners_of(pool, repo_id).await? {
263	if !rows.iter().any(\|(a, _)\| *a == o) && !out.contains(&o) {
264	out.push(o);
265	}
266	}
267	Ok(out)
268	}
269
270	pub async fn subscribe(pool: &Pool, account_id: i64, kind: &str, target_id: i64) -> sqlx::Result<()> {
271	sqlx::query("INSERT OR IGNORE INTO subscriptions (account_id, kind, target_id) VALUES ($1, $2, $3)")
272	.bind(account_id)
273	.bind(kind)
274	.bind(target_id)
275	.execute(pool)
276	.await?;
277	Ok(())
278	}
279
280	pub async fn unsubscribe(pool: &Pool, account_id: i64, kind: &str, target_id: i64) -> sqlx::Result<()> {
281	sqlx::query("DELETE FROM subscriptions WHERE account_id = $1 AND kind = $2 AND target_id = $3")
282	.bind(account_id)
283	.bind(kind)
284	.bind(target_id)
285	.execute(pool)
286	.await?;
287	Ok(())
288	}
289
290	pub async fn subscribed(pool: &Pool, account_id: i64, kind: &str, target_id: i64) -> sqlx::Result<bool> {
291	let n: i64 = sqlx::query_scalar("SELECT COUNT(*) FROM subscriptions WHERE account_id = $1 AND kind = $2 AND target_id = $3")
292	.bind(account_id)
293	.bind(kind)
294	.bind(target_id)
295	.fetch_one(pool)
296	.await?;
297	Ok(n > 0)
298	}
299
300	pub async fn subscribers(pool: &Pool, kind: &str, target_id: i64) -> sqlx::Result<Vec<i64>> {
301	sqlx::query_scalar("SELECT account_id FROM subscriptions WHERE kind = $1 AND target_id = $2")
302	.bind(kind)
303	.bind(target_id)
304	.fetch_all(pool)
305	.await
306	}
307
308	// ------------------------------------------------------------------ search
309
310	#[derive(Clone, Debug, FromRow)]
311	pub struct Hit {
312	pub kind: String,
313	pub repo_id: i64,
314	pub target_id: i64,
315	pub number: i64,
316	pub title: String,
317	pub snippet: String,
318	}
319
320	/// Replace the indexed text of one thread (title plus body plus comments).
321	pub async fn index(pool: &Pool, kind: &str, repo_id: i64, target_id: i64, number: i64, title: &str, body: &str) -> sqlx::Result<()> {
322	sqlx::query("DELETE FROM search WHERE kind = $1 AND target_id = $2").bind(kind).bind(target_id).execute(pool).await?;
323	sqlx::query("INSERT INTO search (kind, repo_id, target_id, number, title, body) VALUES ($1, $2, $3, $4, $5, $6)")
324	.bind(kind)
325	.bind(repo_id)
326	.bind(target_id)
327	.bind(number)
328	.bind(title)
329	.bind(body)
330	.execute(pool)
331	.await?;
332	Ok(())
333	}
334
335	/// Full-text hits, best first. The query is quoted so punctuation cannot
336	/// reach the FTS5 parser.
337	pub async fn search(pool: &Pool, query: &str, repo_id: Option<i64>, limit: i64) -> sqlx::Result<Vec<Hit>> {
338	let terms: Vec<String> = query.split_whitespace().map(\|t\| format!("\"{}\"", t.replace('"', ""))).collect();
339	if terms.is_empty() {
340	return Ok(vec![]);
341	}
342	let q = terms.join(" ");
343	let sql = "SELECT kind, repo_id, target_id, number, title, snippet(search, 5, '<mark>', '</mark>', '…', 12) AS snippet FROM search WHERE search MATCH $1 AND ($2 IS NULL OR repo_id = $3) ORDER BY rank LIMIT $4";
344	sqlx::query_as(sql).bind(q).bind(repo_id).bind(repo_id).bind(limit).fetch_all(pool).await
345	}

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