views: Prepare to expose the yanked field on the API

The `yanked` state is based on the `default_version`. The
`default_version` can only be yanked if all other versions are also
yanked. A crate should only be yanked if all of its versions are yanked.

Author: eth3lbert

src/controllers/krate/metadata.rs

@@ -126,6 +126,7 @@ pub async fn show(app: AppState, Path(name): Path<String>, req: Parts) -> AppRes
         let encodable_crate = EncodableCrate::from(
             krate.clone(),
             default_version.as_deref(),
+            None,
             top_versions.as_ref(),
             ids,
             kws.as_deref(),

src/controllers/krate/publish.rs

@@ -519,6 +519,7 @@ pub async fn publish(app: AppState, req: BytesRequest) -> AppResult<Json<GoodCra
                 krate: EncodableCrate::from_minimal(
                     krate,
                     default_version.or(Some(version_string)).as_deref(),
+                    None,
                     Some(&top_versions),
                     false,
                     downloads,

src/controllers/krate/search.rs

@@ -235,6 +235,7 @@ pub async fn search(app: AppState, req: Parts) -> AppResult<Json<Value>> {
                     EncodableCrate::from_minimal(
                         krate,
                         default_version.as_deref(),
+                        None,
                         Some(&max_version),
                         perfect_match,
                         total,

src/controllers/summary.rs

@@ -47,6 +47,7 @@ pub async fn summary(state: AppState) -> AppResult<Json<Value>> {
                     Ok(EncodableCrate::from_minimal(
                         krate,
                         default_version.as_deref(),
+                        None,
                         Some(&top_versions),
                         false,
                         total,

src/views.rs

@@ -209,6 +209,8 @@ pub struct EncodableCrate {
     pub downloads: i64,
     pub recent_downloads: Option<i64>,
     pub default_version: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub yanked: Option<bool>,
     // NOTE: Used by shields.io, altering `max_version` requires a PR with shields.io
     pub max_version: String,
     pub newest_version: String, // Most recently updated version, which may not be max
@@ -226,6 +228,7 @@ impl EncodableCrate {
     pub fn from(
         krate: Crate,
         default_version: Option<&str>,
+        yanked: Option<bool>,
         top_versions: Option<&TopVersions>,
         versions: Option<Vec<i32>>,
         keywords: Option<&[Keyword]>,
@@ -296,6 +299,7 @@ impl EncodableCrate {
             categories: category_ids,
             badges: [],
             default_version,
+            yanked,
             max_version,
             newest_version,
             max_stable_version,
@@ -318,6 +322,7 @@ impl EncodableCrate {
     pub fn from_minimal(
         krate: Crate,
         default_version: Option<&str>,
+        yanked: Option<bool>,
         top_versions: Option<&TopVersions>,
         exact_match: bool,
         downloads: i64,
@@ -326,6 +331,7 @@ impl EncodableCrate {
         Self::from(
             krate,
             default_version,
+            yanked,
             top_versions,
             None,
             None,
@@ -808,6 +814,7 @@ mod tests {
             downloads: 0,
             recent_downloads: None,
             default_version: None,
+            yanked: None,
             max_version: "".to_string(),
             newest_version: "".to_string(),
             max_stable_version: None,