utoipa: Add pagination query params to list_crates() documentation

src/controllers/helpers/pagination.rs

@@ -55,6 +55,30 @@ impl PaginationOptions {
     }
 }
 
+#[derive(Debug, Deserialize, utoipa::IntoParams)]
+#[into_params(parameter_in = Query)]
+pub struct PaginationQueryParams {
+    /// The page number to request.
+    ///
+    /// This parameter is mutually exclusive with `seek` and not supported for
+    /// all requests.
+    #[param(value_type = Option<u32>, minimum = 1)]
+    page: Option<NonZeroU32>,
+
+    /// The number of items to request per page.
+    #[param(value_type = Option<u32>, minimum = 1)]
+    per_page: Option<NonZeroU32>,
+
+    /// The seek key to request.
+    ///
+    /// This parameter is mutually exclusive with `page` and not supported for
+    /// all requests.
+    ///
+    /// The seek key can usually be found in the `meta.next_page` field of
+    /// paginated responses.
+    seek: Option<String>,
+}
+
 pub(crate) struct PaginationOptionsBuilder {
     limit_page_numbers: bool,
     enable_pages: bool,
@@ -80,14 +104,7 @@ impl PaginationOptionsBuilder {
     pub(crate) fn gather(self, parts: &Parts) -> AppResult<PaginationOptions> {
         use axum::extract::Query;
 
-        #[derive(Debug, Deserialize)]
-        struct QueryParams {
-            page: Option<NonZeroU32>,
-            per_page: Option<NonZeroU32>,
-            seek: Option<String>,
-        }
-
-        let Query(params) = Query::<QueryParams>::try_from_uri(&parts.uri)
+        let Query(params) = Query::<PaginationQueryParams>::try_from_uri(&parts.uri)
             .map_err(|err| bad_request(err.body_text()))?;
 
         if params.seek.is_some() && params.page.is_some() {

src/controllers/krate/search.rs

@@ -22,7 +22,7 @@ use crate::schema::*;
 use crate::util::errors::{bad_request, AppResult};
 use crate::views::EncodableCrate;
 
-use crate::controllers::helpers::pagination::{Page, PaginationOptions};
+use crate::controllers::helpers::pagination::{Page, PaginationOptions, PaginationQueryParams};
 use crate::models::krate::ALL_COLUMNS;
 use crate::sql::{array_agg, canon_crate_name, lower};
 use crate::util::string_excl_null::StringExclNull;
@@ -37,7 +37,7 @@ use crate::util::RequestUtils;
 #[utoipa::path(
     get,
     path = "/api/v1/crates",
-    params(ListQueryParams),
+    params(ListQueryParams, PaginationQueryParams),
     tag = "crates",
     responses((status = 200, description = "Successful Response")),
 )]

src/snapshots/crates_io__openapi__tests__openapi_snapshot.snap

@@ -322,6 +322,46 @@ snapshot_kind: text
               },
               "type": "array"
             }
+          },
+          {
+            "description": "The page number to request.\n\nThis parameter is mutually exclusive with `seek` and not supported for\nall requests.",
+            "in": "query",
+            "name": "page",
+            "required": false,
+            "schema": {
+              "format": "int32",
+              "minimum": 1,
+              "type": [
+                "integer",
+                "null"
+              ]
+            }
+          },
+          {
+            "description": "The number of items to request per page.",
+            "in": "query",
+            "name": "per_page",
+            "required": false,
+            "schema": {
+              "format": "int32",
+              "minimum": 1,
+              "type": [
+                "integer",
+                "null"
+              ]
+            }
+          },
+          {
+            "description": "The seek key to request.\n\nThis parameter is mutually exclusive with `page` and not supported for\nall requests.\n\nThe seek key can usually be found in the `meta.next_page` field of\npaginated responses.",
+            "in": "query",
+            "name": "seek",
+            "required": false,
+            "schema": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
           }
         ],
         "responses": {