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feat: Implement pagination for user media retrieval and update related structures

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This commit is contained in:
Gabriel Kaszewski
2025-11-15 18:06:09 +01:00
parent dd10211c63
commit ccb9f09d4a
8 changed files with 144 additions and 47 deletions
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36
libertas_infra/src/query_builder.rs
View File

@@ -33,16 +33,13 @@ impl MediaQueryBuilder {
)))
}
}
}
impl QueryBuilder<ListMediaOptions> for MediaQueryBuilder {
fn apply_options_to_query<'a>(
pub fn apply_filters_to_query<'a>(
&self,
mut query: SqlxQueryBuilder<'a, sqlx::Postgres>,
options: &'a ListMediaOptions,
) -> CoreResult<SqlxQueryBuilder<'a, sqlx::Postgres>> {
) -> CoreResult<(SqlxQueryBuilder<'a, sqlx::Postgres>, i64)> {
let mut metadata_filter_count = 0;
if let Some(filter) = &options.filter {
if let Some(mime) = &filter.mime_type {
query.push(" AND media.mime_type = ");
@@ -51,8 +48,7 @@ impl QueryBuilder<ListMediaOptions> for MediaQueryBuilder {
if let Some(metadata_filters) = &filter.metadata_filters {
if !metadata_filters.is_empty() {
metadata_filter_count = metadata_filters.len();
metadata_filter_count = metadata_filters.len() as i64;
query.push(" JOIN media_metadata mm ON media.id = mm.media_id ");
query.push(" AND ( ");
@@ -60,7 +56,6 @@ impl QueryBuilder<ListMediaOptions> for MediaQueryBuilder {
if i > 0 {
query.push(" OR ");
}
query.push(" ( mm.tag_name = ");
query.push_bind(&filter.tag_name);
query.push(" AND mm.tag_value = ");
@@ -71,34 +66,38 @@ impl QueryBuilder<ListMediaOptions> for MediaQueryBuilder {
}
}
}
Ok((query, metadata_filter_count))
}
if metadata_filter_count > 0 {
query.push(" GROUP BY media.id ");
query.push(" HAVING COUNT(DISTINCT mm.tag_name) = ");
query.push_bind(metadata_filter_count as i64);
}
pub fn apply_sorting_to_query<'a>(
&self,
mut query: SqlxQueryBuilder<'a, sqlx::Postgres>,
options: &'a ListMediaOptions,
) -> CoreResult<SqlxQueryBuilder<'a, sqlx::Postgres>> {
if let Some(sort) = &options.sort {
let column = self.validate_sort_column(&sort.sort_by)?;
let direction = match sort.sort_order {
SortOrder::Asc => "ASC",
SortOrder::Desc => "DESC",
};
let nulls_order = if direction == "ASC" {
"NULLS LAST"
} else {
"NULLS FIRST"
};
let order_by_clause = format!("ORDER BY {} {} {}", column, direction, nulls_order);
query.push(order_by_clause);
} else {
query.push(" ORDER BY media.created_at DESC NULLS LAST ");
}
Ok(query)
}
// --- 3. Apply Pagination (Future-Proofing Stub) ---
pub fn apply_pagination_to_query<'a>(
&self,
mut query: SqlxQueryBuilder<'a, sqlx::Postgres>,
options: &'a ListMediaOptions,
) -> CoreResult<SqlxQueryBuilder<'a, sqlx::Postgres>> {
if let Some(pagination) = &options.pagination {
let limit = pagination.limit as i64;
let offset = (pagination.page.saturating_sub(1) as i64) * limit;
@@ -108,7 +107,6 @@ impl QueryBuilder<ListMediaOptions> for MediaQueryBuilder {
query.push(" OFFSET ");
query.push_bind(offset);
}
Ok(query)
}
}

66
libertas_infra/src/repositories/media_repository.rs
View File

@@ -11,10 +11,7 @@ use libertas_core::{
use sqlx::PgPool;
use uuid::Uuid;
use crate::{
db_models::PostgresMedia,
query_builder::{MediaQueryBuilder, QueryBuilder},
};
use crate::{db_models::PostgresMedia, query_builder::MediaQueryBuilder};
#[derive(Clone)]
pub struct PostgresMediaRepository {
@@ -106,28 +103,63 @@ impl MediaRepository for PostgresMediaRepository {
&self,
user_id: Uuid,
options: &ListMediaOptions,
) -> CoreResult<Vec<Media>> {
let mut query = sqlx::QueryBuilder::new(
r#"
SELECT media.id, media.owner_id, media.storage_path, media.original_filename, media.mime_type, media.hash, media.created_at,
media.thumbnail_path
FROM media
WHERE media.owner_id =
"#,
);
) -> CoreResult<(Vec<Media>, i64)> {
let count_base_sql = "SELECT COUNT(DISTINCT media.id) as total FROM media";
let mut count_query = sqlx::QueryBuilder::new(count_base_sql);
count_query.push(" WHERE media.owner_id = ");
count_query.push_bind(user_id);
query.push_bind(user_id);
let (mut count_query, metadata_filter_count) = self
.query_builder
.apply_filters_to_query(count_query, options)?;
query = self.query_builder.apply_options_to_query(query, options)?;
if metadata_filter_count > 0 {
count_query.push(" GROUP BY media.id ");
count_query.push(" HAVING COUNT(DISTINCT mm.tag_name) = ");
count_query.push_bind(metadata_filter_count);
let pg_media = query
let mut final_count_query = sqlx::QueryBuilder::new("SELECT COUNT(*) as total FROM (");
final_count_query.push(count_query.into_sql());
final_count_query.push(") as subquery");
count_query = final_count_query;
}
let total_items_result = count_query
.build_query_scalar()
.fetch_one(&self.pool)
.await
.map_err(|e| CoreError::Database(e.to_string()))?;
let data_base_sql = "SELECT media.id, media.owner_id, media.storage_path, media.original_filename, media.mime_type, media.hash, media.created_at, media.thumbnail_path FROM media";
let mut data_query = sqlx::QueryBuilder::new(data_base_sql);
data_query.push(" WHERE media.owner_id = ");
data_query.push_bind(user_id);
let (mut data_query, metadata_filter_count) = self
.query_builder
.apply_filters_to_query(data_query, options)?;
if metadata_filter_count > 0 {
data_query.push(" GROUP BY media.id ");
data_query.push(" HAVING COUNT(DISTINCT mm.tag_name) = ");
data_query.push_bind(metadata_filter_count);
}
data_query = self
.query_builder
.apply_sorting_to_query(data_query, options)?;
data_query = self
.query_builder
.apply_pagination_to_query(data_query, options)?;
let pg_media = data_query
.build_query_as::<PostgresMedia>()
.fetch_all(&self.pool)
.await
.map_err(|e| CoreError::Database(e.to_string()))?;
let media_list = pg_media.into_iter().map(|m| m.into()).collect();
Ok(media_list)
Ok((media_list, total_items_result))
}
async fn update_thumbnail_path(&self, id: Uuid, thumbnail_path: String) -> CoreResult<()> {