Improve the chat workspace REST endpoints

crates/index-scheduler/src/lib.rs

@@ -55,7 +55,7 @@ use meilisearch_types::features::{
     ChatCompletionSettings, InstanceTogglableFeatures, Network, RuntimeTogglableFeatures,
 };
 use meilisearch_types::heed::byteorder::BE;
-use meilisearch_types::heed::types::{SerdeJson, Str, I128};
+use meilisearch_types::heed::types::{DecodeIgnore, SerdeJson, Str, I128};
 use meilisearch_types::heed::{self, Database, Env, RoTxn, RwTxn, WithoutTls};
 use meilisearch_types::milli::index::IndexEmbeddingConfig;
 use meilisearch_types::milli::update::IndexerConfig;
@@ -904,6 +904,12 @@ impl IndexScheduler {
         self.chat_settings.get(rtxn, uid).map_err(Into::into)
     }
 
+    /// Return true if chat workspace exists.
+    pub fn chat_workspace_exists(&self, name: &str) -> Result<bool> {
+        let rtxn = self.env.read_txn()?;
+        Ok(self.chat_settings.remap_data_type::<DecodeIgnore>().get(&rtxn, name)?.is_some())
+    }
+
     pub fn put_chat_settings(
         &self,
         wtxn: &mut RwTxn,

crates/meilisearch-auth/src/store.rs

@@ -125,12 +125,11 @@ impl HeedAuthStore {
                 Action::MetricsAll => {
                     actions.insert(Action::MetricsGet);
                 }
+                Action::ChatsAll => {
+                    actions.extend([Action::ChatsGet, Action::ChatsDelete]);
+                }
                 Action::ChatsSettingsAll => {
-                    actions.extend([
-                        Action::ChatsSettingsGet,
-                        Action::ChatsSettingsUpdate,
-                        Action::ChatsSettingsDelete,
-                    ]);
+                    actions.extend([Action::ChatsSettingsGet, Action::ChatsSettingsUpdate]);
                 }
                 other => {
                     actions.insert(*other);

crates/meilisearch-types/src/keys.rs

@@ -326,9 +326,15 @@ pub enum Action {
     #[serde(rename = "chatCompletions")]
     #[deserr(rename = "chatCompletions")]
     ChatCompletions,
+    #[serde(rename = "chats.*")]
+    #[deserr(rename = "chats.*")]
+    ChatsAll,
     #[serde(rename = "chats.get")]
     #[deserr(rename = "chats.get")]
     ChatsGet,
+    #[serde(rename = "chats.delete")]
+    #[deserr(rename = "chats.delete")]
+    ChatsDelete,
     #[serde(rename = "chatsSettings.*")]
     #[deserr(rename = "chatsSettings.*")]
     ChatsSettingsAll,
@@ -338,9 +344,6 @@ pub enum Action {
     #[serde(rename = "chatsSettings.update")]
     #[deserr(rename = "chatsSettings.update")]
     ChatsSettingsUpdate,
-    #[serde(rename = "chatsSettings.delete")]
-    #[deserr(rename = "chatsSettings.delete")]
-    ChatsSettingsDelete,
 }
 
 impl Action {
@@ -367,11 +370,12 @@ impl Action {
             SETTINGS_GET => Some(Self::SettingsGet),
             SETTINGS_UPDATE => Some(Self::SettingsUpdate),
             CHAT_COMPLETIONS => Some(Self::ChatCompletions),
+            CHATS_ALL => Some(Self::ChatsAll),
             CHATS_GET => Some(Self::ChatsGet),
+            CHATS_DELETE => Some(Self::ChatsDelete),
             CHATS_SETTINGS_ALL => Some(Self::ChatsSettingsAll),
             CHATS_SETTINGS_GET => Some(Self::ChatsSettingsGet),
             CHATS_SETTINGS_UPDATE => Some(Self::ChatsSettingsUpdate),
-            CHATS_SETTINGS_DELETE => Some(Self::ChatsSettingsDelete),
             STATS_ALL => Some(Self::StatsAll),
             STATS_GET => Some(Self::StatsGet),
             METRICS_ALL => Some(Self::MetricsAll),
@@ -438,9 +442,10 @@ pub mod actions {
     pub const NETWORK_UPDATE: u8 = NetworkUpdate.repr();
 
     pub const CHAT_COMPLETIONS: u8 = ChatCompletions.repr();
+    pub const CHATS_ALL: u8 = ChatsAll.repr();
     pub const CHATS_GET: u8 = ChatsGet.repr();
+    pub const CHATS_DELETE: u8 = ChatsDelete.repr();
     pub const CHATS_SETTINGS_ALL: u8 = ChatsSettingsAll.repr();
     pub const CHATS_SETTINGS_GET: u8 = ChatsSettingsGet.repr();
     pub const CHATS_SETTINGS_UPDATE: u8 = ChatsSettingsUpdate.repr();
-    pub const CHATS_SETTINGS_DELETE: u8 = ChatsSettingsDelete.repr();
 }

crates/meilisearch/src/routes/chats/mod.rs

@@ -6,9 +6,11 @@ use index_scheduler::IndexScheduler;
 use meilisearch_types::deserr::query_params::Param;
 use meilisearch_types::deserr::DeserrQueryParamError;
 use meilisearch_types::error::deserr_codes::{InvalidIndexLimit, InvalidIndexOffset};
-use meilisearch_types::error::ResponseError;
+use meilisearch_types::error::{Code, ResponseError};
+use meilisearch_types::index_uid::IndexUid;
 use meilisearch_types::keys::actions;
 use serde::{Deserialize, Serialize};
+use serde_json::json;
 use tracing::debug;
 use utoipa::{IntoParams, ToSchema};
 
@@ -40,11 +42,52 @@ pub struct ChatsParam {
 pub fn configure(cfg: &mut web::ServiceConfig) {
     cfg.service(web::resource("").route(web::get().to(list_workspaces))).service(
         web::scope("/{workspace_uid}")
+            .service(
+                web::resource("")
+                    .route(web::get().to(get_chat))
+                    .route(web::delete().to(delete_chat)),
+            )
             .service(web::scope("/chat/completions").configure(chat_completions::configure))
             .service(web::scope("/settings").configure(settings::configure)),
     );
 }
 
+pub async fn get_chat(
+    index_scheduler: GuardedData<ActionPolicy<{ actions::CHATS_GET }>, Data<IndexScheduler>>,
+    workspace_uid: web::Path<String>,
+) -> Result<HttpResponse, ResponseError> {
+    index_scheduler.features().check_chat_completions("displaying a chat")?;
+
+    let workspace_uid = IndexUid::try_from(workspace_uid.into_inner())?;
+    if index_scheduler.chat_workspace_exists(&workspace_uid)? {
+        Ok(HttpResponse::Ok().json(json!({ "uid": workspace_uid })))
+    } else {
+        Err(ResponseError::from_msg(
+            format!("chat {workspace_uid} not found"),
+            Code::ChatWorkspaceNotFound,
+        ))
+    }
+}
+
+pub async fn delete_chat(
+    index_scheduler: GuardedData<ActionPolicy<{ actions::CHATS_DELETE }>, Data<IndexScheduler>>,
+    workspace_uid: web::Path<String>,
+) -> Result<HttpResponse, ResponseError> {
+    index_scheduler.features().check_chat_completions("deleting a chat")?;
+
+    let mut wtxn = index_scheduler.write_txn()?;
+    let workspace_uid = workspace_uid.into_inner();
+    if index_scheduler.delete_chat_settings(&mut wtxn, &workspace_uid)? {
+        wtxn.commit()?;
+        Ok(HttpResponse::NoContent().finish())
+    } else {
+        Err(ResponseError::from_msg(
+            format!("chat {workspace_uid} not found"),
+            Code::ChatWorkspaceNotFound,
+        ))
+    }
+}
+
 #[derive(Deserr, Debug, Clone, Copy, IntoParams)]
 #[deserr(error = DeserrQueryParamError, rename_all = camelCase, deny_unknown_fields)]
 #[into_params(rename_all = "camelCase", parameter_in = Query)]

crates/meilisearch/src/routes/chats/settings.rs

@@ -26,7 +26,7 @@ pub fn configure(cfg: &mut web::ServiceConfig) {
         web::resource("")
             .route(web::get().to(SeqHandler(get_settings)))
             .route(web::patch().to(SeqHandler(patch_settings)))
-            .route(web::delete().to(SeqHandler(delete_settings))),
+            .route(web::delete().to(SeqHandler(reset_settings))),
     );
 }
 
@@ -159,9 +159,9 @@ async fn patch_settings(
     Ok(HttpResponse::Ok().json(settings))
 }
 
-async fn delete_settings(
+async fn reset_settings(
     index_scheduler: GuardedData<
-        ActionPolicy<{ actions::CHATS_SETTINGS_DELETE }>,
+        ActionPolicy<{ actions::CHATS_SETTINGS_UPDATE }>,
         Data<IndexScheduler>,
     >,
     chats_param: web::Path<ChatsParam>,
@@ -169,12 +169,12 @@ async fn delete_settings(
     index_scheduler.features().check_chat_completions("using the /chats/settings route")?;
 
     let ChatsParam { workspace_uid } = chats_param.into_inner();
-
-    // TODO do a spawn_blocking here
     let mut wtxn = index_scheduler.write_txn()?;
-    if index_scheduler.delete_chat_settings(&mut wtxn, &workspace_uid)? {
+    if index_scheduler.chat_settings(&wtxn, &workspace_uid)?.is_some() {
+        let settings = Default::default();
+        index_scheduler.put_chat_settings(&mut wtxn, &workspace_uid, &settings)?;
         wtxn.commit()?;
-        Ok(HttpResponse::NoContent().finish())
+        Ok(HttpResponse::Ok().json(settings))
     } else {
         Err(ResponseError::from_msg(
             format!("Chat `{workspace_uid}` not found"),