Collections (#688)

* initial draft; unfinished

* images, fixes

* fixes

* println

* revisions

* fixes

* alternate context setup version

* rev

* partial revs

* rev

* clippy ,fmt

* fmt/clippy/prepare

* fixes

* revs

src/routes/v2/projects.rs

@@ -1,10 +1,12 @@
 use crate::auth::{filter_authorized_projects, get_user_from_headers, is_authorized};
 use crate::database;
+use crate::database::models::image_item;
 use crate::database::models::notification_item::NotificationBuilder;
 use crate::database::models::thread_item::ThreadMessageBuilder;
 use crate::file_hosting::FileHost;
 use crate::models;
 use crate::models::ids::base62_impl::parse_base62;
+use crate::models::images::ImageContext;
 use crate::models::notifications::NotificationBody;
 use crate::models::pats::Scopes;
 use crate::models::projects::{
@@ -15,6 +17,7 @@ use crate::models::threads::MessageBody;
 use crate::queue::session::AuthQueue;
 use crate::routes::ApiError;
 use crate::search::{search_for_project, SearchConfig, SearchError};
+use crate::util::img;
 use crate::util::routes::read_from_payload;
 use crate::util::validate::validation_errors_to_string;
 use actix_web::{delete, get, patch, post, web, HttpRequest, HttpResponse};
@@ -1112,6 +1115,18 @@ pub async fn project_edit(
                 .await?;
             }
 
+            // check new description and body for links to associated images
+            // if they no longer exist in the description or body, delete them
+            let checkable_strings: Vec<&str> = vec![&new_project.description, &new_project.body]
+                .into_iter()
+                .filter_map(|x| x.as_ref().map(|y| y.as_str()))
+                .collect();
+
+            let context = ImageContext::Project {
+                project_id: Some(id.into()),
+            };
+
+            img::delete_unused_images(context, checkable_strings, &mut transaction, &redis).await?;
             database::models::Project::clear_cache(
                 project_item.inner.id,
                 project_item.inner.slug,
@@ -2280,6 +2295,24 @@ pub async fn project_delete(
     }
 
     let mut transaction = pool.begin().await?;
+    let context = ImageContext::Project {
+        project_id: Some(project.inner.id.into()),
+    };
+    let uploaded_images =
+        database::models::Image::get_many_contexted(context, &mut transaction).await?;
+    for image in uploaded_images {
+        image_item::Image::remove(image.id, &mut transaction, &redis).await?;
+    }
+
+    sqlx::query!(
+        "
+        DELETE FROM collections_mods
+        WHERE mod_id = $1
+        ",
+        project.inner.id as database::models::ids::ProjectId,
+    )
+    .execute(&mut *transaction)
+    .await?;
 
     let result =
         database::models::Project::remove(project.inner.id, &mut transaction, &redis).await?;