crates/hub/src/db/notify.rs at v0.9.21 · andymccall/oxygenhub

◆ v0.9.21 oxygenhub / crates / hub / src / db / notify.rs

13.5 KiB · Rust · last changed Postgres, step 3: the hub builds and passes its tests on PostgreSQL 19 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 = FALSE WHERE account_id = $1 AND thread = $2 AND done = TRUE")
        .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>> {
    // Each thread is shown as its newest notification (row 1 by time) with
    // counts over the whole thread: window functions, so the same SQL runs on
    // SQLite and Postgres.
    let mut sql = String::from(
        "SELECT id, at_ms, kind, title, url, actor, thread, repo_id, \
         (SELECT r.owner || '/' || r.name FROM repositories r WHERE r.id = t.repo_id) AS repo, \
         count, unread, participating > 0 AS participating, done FROM (\
         SELECT n.id, n.at_ms, n.kind, n.title, n.url, n.actor, n.thread, n.repo_id, n.done, \
         ROW_NUMBER() OVER (PARTITION BY n.thread ORDER BY n.at_ms DESC, n.id DESC) AS newest, \
         COUNT(*) OVER (PARTITION BY n.thread) AS count, \
         SUM(CASE WHEN n.read THEN 0 ELSE 1 END) OVER (PARTITION BY n.thread) AS unread, \
         SUM(CASE WHEN n.reason = 'participating' THEN 1 ELSE 0 END) OVER (PARTITION BY n.thread) AS participating \
         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(") t WHERE newest = 1");
    if f.unread_only {
        sql.push_str(" AND unread > 0");
    }
    match f.reason.as_deref() {
        Some("participating") => sql.push_str(" AND participating > 0"),
        Some("watching") => sql.push_str(" AND 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 = TRUE 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 = FALSE 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 = TRUE" } 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 = FALSE AND done = FALSE")
        .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 = TRUE WHERE account_id = $1 AND id = $2")
                .bind(account_id)
                .bind(id)
                .execute(pool)
                .await?
        }
        None => sqlx::query("UPDATE notifications SET read = TRUE 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 INTO subscriptions (account_id, kind, target_id) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING")
        .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.
#[cfg(not(feature = "postgres"))]
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
}

/// Full-text hits, best first, as SQLite's: every word must appear
/// (stemmed, as FTS5's porter tokenizer does), titles weigh more, and the
/// snippet is from the body with the words marked.
#[cfg(feature = "postgres")]
pub async fn search(pool: &Pool, query: &str, repo_id: Option<i64>, limit: i64) -> sqlx::Result<Vec<Hit>> {
    if query.split_whitespace().next().is_none() {
        return Ok(vec![]);
    }
    let sql = "SELECT kind, repo_id, target_id, number, title, \
               ts_headline('english', body, q, 'StartSel=\"<mark>\", StopSel=\"</mark>\", MaxWords=12, MinWords=4') AS snippet \
               FROM search, plainto_tsquery('english', $1) q WHERE doc @@ q AND ($2 IS NULL OR repo_id = $3) \
               ORDER BY ts_rank(doc, q) DESC LIMIT $4";
    sqlx::query_as(sql).bind(query).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 = FALSE WHERE account_id = $1 AND thread = $2 AND done = TRUE")
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	// Each thread is shown as its newest notification (row 1 by time) with
111	// counts over the whole thread: window functions, so the same SQL runs on
112	// SQLite and Postgres.
113	let mut sql = String::from(
114	"SELECT id, at_ms, kind, title, url, actor, thread, repo_id, \
115	(SELECT r.owner \|\| '/' \|\| r.name FROM repositories r WHERE r.id = t.repo_id) AS repo, \
116	count, unread, participating > 0 AS participating, done FROM (\
117	SELECT n.id, n.at_ms, n.kind, n.title, n.url, n.actor, n.thread, n.repo_id, n.done, \
118	ROW_NUMBER() OVER (PARTITION BY n.thread ORDER BY n.at_ms DESC, n.id DESC) AS newest, \
119	COUNT(*) OVER (PARTITION BY n.thread) AS count, \
120	SUM(CASE WHEN n.read THEN 0 ELSE 1 END) OVER (PARTITION BY n.thread) AS unread, \
121	SUM(CASE WHEN n.reason = 'participating' THEN 1 ELSE 0 END) OVER (PARTITION BY n.thread) AS participating \
122	FROM notifications n WHERE n.account_id = $1 AND n.done = $2",
123	);
124	// Placeholders numbered as they are added: $1 and $2 above.
125	let mut next = 3;
126	if f.kind.is_some() {
127	sql.push_str(&format!(" AND (n.kind = ${} OR n.kind LIKE ${} \|\| '.%')", next, next + 1));
128	next += 2;
129	}
130	if f.repo_id.is_some() {
131	sql.push_str(&format!(" AND n.repo_id = ${next}"));
132	next += 1;
133	}
134	sql.push_str(") t WHERE newest = 1");
135	if f.unread_only {
136	sql.push_str(" AND unread > 0");
137	}
138	match f.reason.as_deref() {
139	Some("participating") => sql.push_str(" AND participating > 0"),
140	Some("watching") => sql.push_str(" AND participating = 0"),
141	_ => {}
142	}
143	sql.push_str(&format!(" ORDER BY at_ms DESC LIMIT ${next}"));
144	let mut q = sqlx::query_as::<_, Thread>(&sql).bind(account_id).bind(f.done);
145	if let Some(k) = &f.kind {
146	q = q.bind(k).bind(k);
147	}
148	if let Some(r) = f.repo_id {
149	q = q.bind(r);
150	}
151	q.bind(limit).fetch_all(pool).await
152	}
153
154	/// Mark a thread read or unread, done or back in the inbox.
155	pub async fn set_thread(pool: &Pool, account_id: i64, thread: &str, read: Option<bool>, done: Option<bool>) -> sqlx::Result<()> {
156	if let Some(r) = read {
157	if r {
158	sqlx::query("UPDATE notifications SET read = TRUE WHERE account_id = $1 AND thread = $2")
159	.bind(account_id)
160	.bind(thread)
161	.execute(pool)
162	.await?;
163	} else {
164	// Unread: the newest notification of the thread only.
165	sqlx::query("UPDATE notifications SET read = FALSE WHERE id = (SELECT id FROM notifications WHERE account_id = $1 AND thread = $2 ORDER BY at_ms DESC, id DESC LIMIT 1)")
166	.bind(account_id)
167	.bind(thread)
168	.execute(pool)
169	.await?;
170	}
171	}
172	if let Some(d) = done {
173	let read_too = if d { ", read = TRUE" } else { "" };
174	sqlx::query(&format!("UPDATE notifications SET done = $1{read_too} WHERE account_id = $2 AND thread = $3"))
175	.bind(d)
176	.bind(account_id)
177	.bind(thread)
178	.execute(pool)
179	.await?;
180	}
181	Ok(())
182	}
183
184	/// The notification with this id, if it is the account's.
185	pub async fn get(pool: &Pool, account_id: i64, id: i64) -> sqlx::Result<Option<Notification>> {
186	sqlx::query_as("SELECT * FROM notifications WHERE account_id = $1 AND id = $2").bind(account_id).bind(id).fetch_optional(pool).await
187	}
188
189	pub async fn inbox(pool: &Pool, account_id: i64, limit: i64) -> sqlx::Result<Vec<Notification>> {
190	sqlx::query_as("SELECT * FROM notifications WHERE account_id = $1 ORDER BY read, at_ms DESC, id DESC LIMIT $2")
191	.bind(account_id)
192	.bind(limit)
193	.fetch_all(pool)
194	.await
195	}
196
197	pub async fn unread(pool: &Pool, account_id: i64) -> sqlx::Result<i64> {
198	sqlx::query_scalar("SELECT COUNT(*) FROM notifications WHERE account_id = $1 AND read = FALSE AND done = FALSE")
199	.bind(account_id)
200	.fetch_one(pool)
201	.await
202	}
203
204	pub async fn mark_read(pool: &Pool, account_id: i64, id: Option<i64>) -> sqlx::Result<()> {
205	match id {
206	Some(id) => {
207	sqlx::query("UPDATE notifications SET read = TRUE WHERE account_id = $1 AND id = $2")
208	.bind(account_id)
209	.bind(id)
210	.execute(pool)
211	.await?
212	}
213	None => sqlx::query("UPDATE notifications SET read = TRUE WHERE account_id = $1").bind(account_id).execute(pool).await?,
214	};
215	Ok(())
216	}
217
218	// ---------------------------------------------------------------- watching
219
220	/// The accounts that own repository `repo_id`: its owner, or the owners of
221	/// the organisation that owns it. They watch it unless they mute it
222	/// (oxygenhub#183).
223	pub async fn owners_of(pool: &Pool, repo_id: i64) -> sqlx::Result<Vec<i64>> {
224	let owner: Option<String> =
225	sqlx::query_scalar("SELECT owner FROM repositories WHERE id = $1").bind(repo_id).fetch_optional(pool).await?;
226	let Some(owner) = owner else { return Ok(Vec::new()) };
227	if let Some(a) = super::accounts::account_by_name(pool, &owner).await? {
228	return Ok(vec![a.id]);
229	}
230	match super::accounts::org_by_name(pool, &owner).await? {
231	Some(o) => {
232	Ok(super::accounts::org_members(pool, o.id).await?.into_iter().filter(\|(_, r)\| r == "owner").map(\|(a, _)\| a.id).collect())
233	}
234	None => Ok(Vec::new()),
235	}
236	}
237
238	/// Whether `account_id` watches `repo_id`: a watch it chose, or, for an
239	/// owner, unless it muted it.
240	pub async fn watching(pool: &Pool, account_id: i64, repo_id: i64) -> sqlx::Result<bool> {
241	let muted: Option<bool> = sqlx::query_scalar("SELECT muted FROM watches WHERE account_id = $1 AND repo_id = $2")
242	.bind(account_id)
243	.bind(repo_id)
244	.fetch_optional(pool)
245	.await?;
246	match muted {
247	Some(m) => Ok(!m),
248	None => Ok(owners_of(pool, repo_id).await?.contains(&account_id)),
249	}
250	}
251
252	/// Watch `repo_id`, or stop: for an owner, stopping mutes it.
253	pub async fn set_watch(pool: &Pool, account_id: i64, repo_id: i64, on: bool) -> sqlx::Result<()> {
254	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")
255	.bind(account_id)
256	.bind(repo_id)
257	.bind(!on)
258	.execute(pool)
259	.await?;
260	Ok(())
261	}
262
263	/// Everyone watching `repo_id`: those who chose to, and its owners who
264	/// have not muted it.
265	pub async fn watchers(pool: &Pool, repo_id: i64) -> sqlx::Result<Vec<i64>> {
266	let rows: Vec<(i64, bool)> =
267	sqlx::query_as("SELECT account_id, muted FROM watches WHERE repo_id = $1").bind(repo_id).fetch_all(pool).await?;
268	let mut out: Vec<i64> = rows.iter().filter(\|(_, m)\| !m).map(\|(a, _)\| *a).collect();
269	for o in owners_of(pool, repo_id).await? {
270	if !rows.iter().any(\|(a, _)\| *a == o) && !out.contains(&o) {
271	out.push(o);
272	}
273	}
274	Ok(out)
275	}
276
277	pub async fn subscribe(pool: &Pool, account_id: i64, kind: &str, target_id: i64) -> sqlx::Result<()> {
278	sqlx::query("INSERT INTO subscriptions (account_id, kind, target_id) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING")
279	.bind(account_id)
280	.bind(kind)
281	.bind(target_id)
282	.execute(pool)
283	.await?;
284	Ok(())
285	}
286
287	pub async fn unsubscribe(pool: &Pool, account_id: i64, kind: &str, target_id: i64) -> sqlx::Result<()> {
288	sqlx::query("DELETE FROM subscriptions WHERE account_id = $1 AND kind = $2 AND target_id = $3")
289	.bind(account_id)
290	.bind(kind)
291	.bind(target_id)
292	.execute(pool)
293	.await?;
294	Ok(())
295	}
296
297	pub async fn subscribed(pool: &Pool, account_id: i64, kind: &str, target_id: i64) -> sqlx::Result<bool> {
298	let n: i64 = sqlx::query_scalar("SELECT COUNT(*) FROM subscriptions WHERE account_id = $1 AND kind = $2 AND target_id = $3")
299	.bind(account_id)
300	.bind(kind)
301	.bind(target_id)
302	.fetch_one(pool)
303	.await?;
304	Ok(n > 0)
305	}
306
307	pub async fn subscribers(pool: &Pool, kind: &str, target_id: i64) -> sqlx::Result<Vec<i64>> {
308	sqlx::query_scalar("SELECT account_id FROM subscriptions WHERE kind = $1 AND target_id = $2")
309	.bind(kind)
310	.bind(target_id)
311	.fetch_all(pool)
312	.await
313	}
314
315	// ------------------------------------------------------------------ search
316
317	#[derive(Clone, Debug, FromRow)]
318	pub struct Hit {
319	pub kind: String,
320	pub repo_id: i64,
321	pub target_id: i64,
322	pub number: i64,
323	pub title: String,
324	pub snippet: String,
325	}
326
327	/// Replace the indexed text of one thread (title plus body plus comments).
328	pub async fn index(pool: &Pool, kind: &str, repo_id: i64, target_id: i64, number: i64, title: &str, body: &str) -> sqlx::Result<()> {
329	sqlx::query("DELETE FROM search WHERE kind = $1 AND target_id = $2").bind(kind).bind(target_id).execute(pool).await?;
330	sqlx::query("INSERT INTO search (kind, repo_id, target_id, number, title, body) VALUES ($1, $2, $3, $4, $5, $6)")
331	.bind(kind)
332	.bind(repo_id)
333	.bind(target_id)
334	.bind(number)
335	.bind(title)
336	.bind(body)
337	.execute(pool)
338	.await?;
339	Ok(())
340	}
341
342	/// Full-text hits, best first. The query is quoted so punctuation cannot
343	/// reach the FTS5 parser.
344	#[cfg(not(feature = "postgres"))]
345	pub async fn search(pool: &Pool, query: &str, repo_id: Option<i64>, limit: i64) -> sqlx::Result<Vec<Hit>> {
346	let terms: Vec<String> = query.split_whitespace().map(\|t\| format!("\"{}\"", t.replace('"', ""))).collect();
347	if terms.is_empty() {
348	return Ok(vec![]);
349	}
350	let q = terms.join(" ");
351	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";
352	sqlx::query_as(sql).bind(q).bind(repo_id).bind(repo_id).bind(limit).fetch_all(pool).await
353	}
354
355	/// Full-text hits, best first, as SQLite's: every word must appear
356	/// (stemmed, as FTS5's porter tokenizer does), titles weigh more, and the
357	/// snippet is from the body with the words marked.
358	#[cfg(feature = "postgres")]
359	pub async fn search(pool: &Pool, query: &str, repo_id: Option<i64>, limit: i64) -> sqlx::Result<Vec<Hit>> {
360	if query.split_whitespace().next().is_none() {
361	return Ok(vec![]);
362	}
363	let sql = "SELECT kind, repo_id, target_id, number, title, \
364	ts_headline('english', body, q, 'StartSel=\"<mark>\", StopSel=\"</mark>\", MaxWords=12, MinWords=4') AS snippet \
365	FROM search, plainto_tsquery('english', $1) q WHERE doc @@ q AND ($2 IS NULL OR repo_id = $3) \
366	ORDER BY ts_rank(doc, q) DESC LIMIT $4";
367	sqlx::query_as(sql).bind(query).bind(repo_id).bind(repo_id).bind(limit).fetch_all(pool).await
368	}

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