chore: merge avatars service into monorepo

lib/libpk/src/db/repository/avatars.rs

@@ -0,0 +1,87 @@
+use sqlx::{PgPool, Postgres, Transaction};
+
+use crate::db::types::avatars::*;
+
+pub async fn get_by_original_url(
+    pool: &PgPool,
+    original_url: &str,
+) -> anyhow::Result<Option<ImageMeta>> {
+    Ok(
+        sqlx::query_as("select * from images where original_url = $1")
+            .bind(original_url)
+            .fetch_optional(pool)
+            .await?,
+    )
+}
+
+pub async fn get_by_attachment_id(
+    pool: &PgPool,
+    attachment_id: u64,
+) -> anyhow::Result<Option<ImageMeta>> {
+    Ok(
+        sqlx::query_as("select * from images where original_attachment_id = $1")
+            .bind(attachment_id as i64)
+            .fetch_optional(pool)
+            .await?,
+    )
+}
+
+pub async fn pop_queue(
+    pool: &PgPool,
+) -> anyhow::Result<Option<(Transaction<Postgres>, ImageQueueEntry)>> {
+    let mut tx = pool.begin().await?;
+    let res: Option<ImageQueueEntry> = sqlx::query_as("delete from image_queue where itemid = (select itemid from image_queue order by itemid for update skip locked limit 1) returning *")
+        .fetch_optional(&mut *tx).await?;
+    Ok(res.map(|x| (tx, x)))
+}
+
+pub async fn get_queue_length(pool: &PgPool) -> anyhow::Result<i64> {
+    Ok(sqlx::query_scalar("select count(*) from image_queue")
+        .fetch_one(pool)
+        .await?)
+}
+
+pub async fn get_stats(pool: &PgPool) -> anyhow::Result<Stats> {
+    Ok(sqlx::query_as(
+        "select count(*) as total_images, sum(file_size) as total_file_size from images",
+    )
+    .fetch_one(pool)
+    .await?)
+}
+
+pub async fn add_image(pool: &PgPool, meta: ImageMeta) -> anyhow::Result<bool> {
+    let kind_str = match meta.kind {
+        ImageKind::Avatar => "avatar",
+        ImageKind::Banner => "banner",
+    };
+
+    let res = sqlx::query("insert into images (id, url, content_type, original_url, file_size, width, height, original_file_size, original_type, original_attachment_id, kind, uploaded_by_account, uploaded_by_system, uploaded_at) values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, (now() at time zone 'utc')) on conflict (id) do nothing")
+        .bind(meta.id)
+        .bind(meta.url)
+        .bind(meta.content_type)
+        .bind(meta.original_url)
+        .bind(meta.file_size)
+        .bind(meta.width)
+        .bind(meta.height)
+        .bind(meta.original_file_size)
+        .bind(meta.original_type)
+        .bind(meta.original_attachment_id)
+        .bind(kind_str)
+        .bind(meta.uploaded_by_account)
+        .bind(meta.uploaded_by_system)
+        .execute(pool).await?;
+    Ok(res.rows_affected() > 0)
+}
+
+pub async fn push_queue(
+    conn: &mut sqlx::PgConnection,
+    url: &str,
+    kind: ImageKind,
+) -> anyhow::Result<()> {
+    sqlx::query("insert into image_queue (url, kind) values ($1, $2)")
+        .bind(url)
+        .bind(kind)
+        .execute(conn)
+        .await?;
+    Ok(())
+}