Make gallery item featuring exclusive (#241)

* Make gallery featured value exclusive

* Run prepare

sqlx-data.json

@@ -2168,6 +2168,19 @@
       ]
     }
   },
+  "61a7f29e024bf2f1368370e3f6e8ef70317c7e8545b5b6d4235f21164948ba27": {
+    "query": "\n                UPDATE mods_gallery\n                SET featured = $2\n                WHERE mod_id = $1\n                ",
+    "describe": {
+      "columns": [],
+      "parameters": {
+        "Left": [
+          "Int8",
+          "Bool"
+        ]
+      },
+      "nullable": []
+    }
+  },
   "67d021f0776276081d3c50ca97afa6b78b98860bf929009e845e9c00a192e3b5": {
     "query": "\n            SELECT id FROM report_types\n            WHERE name = $1\n            ",
     "describe": {

src/routes/project_creation.rs

@@ -442,6 +442,12 @@ pub async fn project_create_inner(
         }
 
         if let Some(gallery_items) = &project_create_data.gallery_items {
+            if gallery_items.iter().filter(|a| a.featured).count() > 1 {
+                return Err(CreateError::InvalidInput(String::from(
+                    "Only one gallery image can be featured.",
+                )));
+            }
+
             if let Some(item) = gallery_items.iter().find(|x| x.item == name) {
                 let mut data = Vec::new();
                 while let Some(chunk) = field.next().await {

src/routes/projects.rs

@@ -1153,6 +1153,20 @@ pub async fn add_gallery_item(
 
         let mut transaction = pool.begin().await?;
 
+        if item.featured {
+            sqlx::query!(
+                "
+                UPDATE mods_gallery
+                SET featured = $2
+                WHERE mod_id = $1
+                ",
+                project_item.id as database::models::ids::ProjectId,
+                false,
+            )
+            .execute(&mut *transaction)
+            .await?;
+        }
+
         database::models::project_item::GalleryItem {
             project_id: project_item.id,
             image_url: format!("{}/{}", cdn_url, url),
@@ -1256,6 +1270,20 @@ pub async fn edit_gallery_item(
     let mut transaction = pool.begin().await?;
 
     if let Some(featured) = item.featured {
+        if featured {
+            sqlx::query!(
+                "
+                UPDATE mods_gallery
+                SET featured = $2
+                WHERE mod_id = $1
+                ",
+                project_item.id as database::models::ids::ProjectId,
+                false,
+            )
+            .execute(&mut *transaction)
+            .await?;
+        }
+
         sqlx::query!(
             "
             UPDATE mods_gallery