feat: init

2026-06-07 11:30:56 +08:00
commit 563381c1ca
361 changed files with 41327 additions and 0 deletions
@@ -0,0 +1,126 @@
+use uuid::Uuid;
+
+use crate::error::AppError;
+use crate::models::issues::IssueSubscriber;
+use crate::service::IssueService;
+use crate::session::Session;
+
+use super::util::{clamp_limit_offset, ensure_affected};
+
+impl IssueService {
+    pub async fn issue_subscribers(
+        &self,
+        ctx: &Session,
+        wk_name: &str,
+        number: i64,
+        limit: i64,
+        offset: i64,
+    ) -> Result<Vec<IssueSubscriber>, AppError> {
+        let user_uid = ctx.user().ok_or(AppError::Unauthorized)?;
+        let issue = self.resolve_issue(wk_name, number).await?;
+        let issue_id = issue.id;
+        self.ensure_issue_readable(user_uid, &issue).await?;
+        let (limit, offset) = clamp_limit_offset(limit, offset);
+        sqlx::query_as::<_, IssueSubscriber>(
+            "SELECT id, issue_id, user_id, reason, muted, created_at, updated_at \
+             FROM issue_subscriber WHERE issue_id = $1 ORDER BY created_at ASC LIMIT $2 OFFSET $3",
+        )
+        .bind(issue_id)
+        .bind(limit)
+        .bind(offset)
+        .fetch_all(self.ctx.db.reader())
+        .await
+        .map_err(AppError::Database)
+    }
+
+    pub async fn issue_subscribe(
+        &self,
+        ctx: &Session,
+        wk_name: &str,
+        number: i64,
+    ) -> Result<IssueSubscriber, AppError> {
+        let user_uid = ctx.user().ok_or(AppError::Unauthorized)?;
+        let issue = self.resolve_issue(wk_name, number).await?;
+        let issue_id = issue.id;
+        self.ensure_issue_readable(user_uid, &issue).await?;
+        let now = chrono::Utc::now();
+        let mut txn = self
+            .ctx
+            .db
+            .writer()
+            .begin()
+            .await
+            .map_err(|_| AppError::TxnError)?;
+        sqlx::query("SET LOCAL app.current_user_id = $1")
+            .bind(user_uid)
+            .execute(&mut *txn)
+            .await
+            .map_err(AppError::Database)?;
+        let sub = sqlx::query_as::<_, IssueSubscriber>(
+            "INSERT INTO issue_subscriber (id, issue_id, user_id, reason, muted, created_at, updated_at) \
+             VALUES ($1, $2, $3, 'manual', false, $4, $4) ON CONFLICT (issue_id, user_id) DO NOTHING \
+             RETURNING id, issue_id, user_id, reason, muted, created_at, updated_at",
+        )
+        .bind(Uuid::now_v7()).bind(issue_id).bind(user_uid).bind(now)
+        .fetch_optional(&mut *txn).await.map_err(AppError::Database)?
+        .ok_or(AppError::Conflict("already subscribed".into()))?;
+        sqlx::query("UPDATE issue_stats SET subscribers_count = subscribers_count + 1, updated_at = $1 WHERE issue_id = $2")
+            .bind(now).bind(issue_id).execute(&mut *txn).await.map_err(AppError::Database)?;
+        txn.commit().await.map_err(|_| AppError::TxnError)?;
+        Ok(sub)
+    }
+
+    pub async fn issue_unsubscribe(
+        &self,
+        ctx: &Session,
+        wk_name: &str,
+        number: i64,
+    ) -> Result<(), AppError> {
+        let user_uid = ctx.user().ok_or(AppError::Unauthorized)?;
+        let issue = self.resolve_issue(wk_name, number).await?;
+        let issue_id = issue.id;
+        let now = chrono::Utc::now();
+        let mut txn = self
+            .ctx
+            .db
+            .writer()
+            .begin()
+            .await
+            .map_err(|_| AppError::TxnError)?;
+        sqlx::query("SET LOCAL app.current_user_id = $1")
+            .bind(user_uid)
+            .execute(&mut *txn)
+            .await
+            .map_err(AppError::Database)?;
+        let result =
+            sqlx::query("DELETE FROM issue_subscriber WHERE issue_id = $1 AND user_id = $2")
+                .bind(issue_id)
+                .bind(user_uid)
+                .execute(&mut *txn)
+                .await
+                .map_err(AppError::Database)?;
+        ensure_affected(result.rows_affected(), "not subscribed")?;
+        sqlx::query("UPDATE issue_stats SET subscribers_count = GREATEST(subscribers_count - 1, 0), updated_at = $1 WHERE issue_id = $2")
+            .bind(now).bind(issue_id).execute(&mut *txn).await.map_err(AppError::Database)?;
+        txn.commit().await.map_err(|_| AppError::TxnError)?;
+        Ok(())
+    }
+
+    pub async fn issue_mute(
+        &self,
+        ctx: &Session,
+        wk_name: &str,
+        number: i64,
+        muted: bool,
+    ) -> Result<(), AppError> {
+        let user_uid = ctx.user().ok_or(AppError::Unauthorized)?;
+        let issue = self.resolve_issue(wk_name, number).await?;
+        let issue_id = issue.id;
+        let result = sqlx::query(
+            "UPDATE issue_subscriber SET muted = $1, updated_at = $2 WHERE issue_id = $3 AND user_id = $4",
+        )
+        .bind(muted).bind(chrono::Utc::now()).bind(issue_id).bind(user_uid)
+        .execute(self.ctx.db.writer()).await.map_err(AppError::Database)?;
+        ensure_affected(result.rows_affected(), "not subscribed")
+    }
+}