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-rw-r--r--backend/src/handlers/product.rs51
1 files changed, 44 insertions, 7 deletions
diff --git a/backend/src/handlers/product.rs b/backend/src/handlers/product.rs
index 41a47a0..0113bc8 100644
--- a/backend/src/handlers/product.rs
+++ b/backend/src/handlers/product.rs
@@ -74,16 +74,53 @@ pub async fn update_product(
74 } 74 }
75} 75}
76 76
77#[derive(Serialize, Debug)]
78struct CatalogProduct {
79 pub id: i32,
80 pub name: String,
81 pub kind: Option<String>,
82 pub price: f32,
83 pub description: Option<String>,
84 pub average_rating: Option<f64>,
85}
86
77pub async fn get_all_products(pool: web::Data<TPool>) -> impl Responder { 87pub async fn get_all_products(pool: web::Data<TPool>) -> impl Responder {
78 let conn = pool.get().unwrap(); 88 let conn = pool.get().unwrap();
79 info!("Generating and returning catalog ..."); 89 info!("Generating and returning catalog ...");
80 match product.load::<Product>(&conn) { 90 let product_entries = product
81 Ok(products) => return HttpResponse::Ok().json(&products), 91 .load::<Product>(&conn)
82 Err(_) => { 92 .expect("Couldn't connect to DB");
83 return HttpResponse::InternalServerError() 93 let with_rating_avg = product_entries
84 .body("Unable to fetch product catalog") 94 .into_iter()
85 } 95 .map(move |p| {
86 } 96 let rating_list = rating::rating
97 .filter(rating::product_id.eq(p.id))
98 .load::<Rating>(&conn)
99 .expect("Coundn't connect to DB")
100 .into_iter()
101 .map(|r| r.stars)
102 .collect::<Vec<_>>();
103 let (rating_sum, total) =
104 rating_list.into_iter().fold((0, 0), |(s, t), x| match x {
105 Some(v) => (s + v, t + 1),
106 None => (s, t),
107 });
108 let average_rating = if total != 0 {
109 Some(rating_sum as f64 / total as f64)
110 } else {
111 None
112 };
113 CatalogProduct {
114 average_rating,
115 name: p.name,
116 kind: p.kind,
117 price: p.price,
118 description: p.description,
119 id: p.id,
120 }
121 })
122 .collect::<Vec<_>>();
123 return HttpResponse::Ok().json(&with_rating_avg);
87} 124}
88 125
89#[derive(Serialize, Deserialize, Debug)] 126#[derive(Serialize, Deserialize, Debug)]