🎭 feat: Override Custom Endpoint Schema with Specified Params Endpoint (#11788)

* 🔧 refactor: Simplify payload parsing and enhance getSaveOptions logic

- Removed unused bedrockInputSchema from payloadParser, streamlining the function.
- Updated payloadParser to handle optional chaining for model parameters.
- Enhanced getSaveOptions to ensure runOptions defaults to an empty object if parsing fails, improving robustness.
- Adjusted the assignment of maxContextTokens to use the instance variable for consistency.

* 🔧 fix: Update maxContextTokens assignment logic in initializeAgent function

- Enhanced the maxContextTokens assignment to allow for user-defined values, ensuring it defaults to a calculated value only when not provided or invalid. This change improves flexibility in agent initialization.

* 🧪 test: Add unit tests for initializeAgent function

- Introduced comprehensive unit tests for the initializeAgent function, focusing on maxContextTokens behavior.
- Tests cover scenarios for user-defined values, fallback calculations, and edge cases such as zero and negative values, enhancing overall test coverage and reliability of agent initialization logic.

* refactor: default params Endpoint Configuration Handling

- Integrated `getEndpointsConfig` to fetch endpoint configurations, allowing for dynamic handling of `defaultParamsEndpoint`.
- Updated `buildEndpointOption` to pass `defaultParamsEndpoint` to `parseCompactConvo`, ensuring correct parameter handling based on endpoint type.
- Added comprehensive unit tests for `buildDefaultConvo` and `cleanupPreset` to validate behavior with `defaultParamsEndpoint`, covering various scenarios and edge cases.
- Refactored related hooks and utility functions to support the new configuration structure, improving overall flexibility and maintainability.

* refactor: Centralize defaultParamsEndpoint retrieval

- Introduced `getDefaultParamsEndpoint` function to streamline the retrieval of `defaultParamsEndpoint` across various hooks and middleware.
- Updated multiple files to utilize the new function, enhancing code consistency and maintainability.
- Removed redundant logic for fetching `defaultParamsEndpoint`, simplifying the codebase.

packages/data-provider/src/config.ts

@@ -1908,3 +1908,14 @@ export function getEndpointField<
   }
   return config[property];
 }
+
+/** Resolves the `defaultParamsEndpoint` for a given endpoint from its custom params config */
+export function getDefaultParamsEndpoint(
+  endpointsConfig: TEndpointsConfig | undefined | null,
+  endpoint: string | null | undefined,
+): string | undefined {
+  if (!endpointsConfig || !endpoint) {
+    return undefined;
+  }
+  return endpointsConfig[endpoint]?.customParams?.defaultParamsEndpoint;
+}

packages/data-provider/src/parsers.ts

@@ -144,26 +144,25 @@ export const parseConvo = ({
   endpointType,
   conversation,
   possibleValues,
+  defaultParamsEndpoint,
 }: {
   endpoint: EndpointSchemaKey;
   endpointType?: EndpointSchemaKey | null;
   conversation: Partial<s.TConversation | s.TPreset> | null;
   possibleValues?: TPossibleValues;
-  // TODO: POC for default schema
-  // defaultSchema?: Partial<EndpointSchema>,
+  defaultParamsEndpoint?: string | null;
 }) => {
   let schema = endpointSchemas[endpoint] as EndpointSchema | undefined;
 
   if (!schema && !endpointType) {
     throw new Error(`Unknown endpoint: ${endpoint}`);
-  } else if (!schema && endpointType) {
-    schema = endpointSchemas[endpointType];
+  } else if (!schema) {
+    const overrideSchema = defaultParamsEndpoint
+      ? endpointSchemas[defaultParamsEndpoint as EndpointSchemaKey]
+      : undefined;
+    schema = overrideSchema ?? (endpointType ? endpointSchemas[endpointType] : undefined);
   }
 
-  // if (defaultSchema && schemaCreators[endpoint]) {
-  //   schema = schemaCreators[endpoint](defaultSchema);
-  // }
-
   const convo = schema?.parse(conversation) as s.TConversation | undefined;
   const { models } = possibleValues ?? {};
 
@@ -310,13 +309,13 @@ export const parseCompactConvo = ({
   endpointType,
   conversation,
   possibleValues,
+  defaultParamsEndpoint,
 }: {
   endpoint?: EndpointSchemaKey;
   endpointType?: EndpointSchemaKey | null;
   conversation: Partial<s.TConversation | s.TPreset>;
   possibleValues?: TPossibleValues;
-  // TODO: POC for default schema
-  // defaultSchema?: Partial<EndpointSchema>,
+  defaultParamsEndpoint?: string | null;
 }): Omit<s.TConversation, 'iconURL'> | null => {
   if (!endpoint) {
     throw new Error(`undefined endpoint: ${endpoint}`);
@@ -326,8 +325,11 @@ export const parseCompactConvo = ({
 
   if (!schema && !endpointType) {
     throw new Error(`Unknown endpoint: ${endpoint}`);
-  } else if (!schema && endpointType) {
-    schema = compactEndpointSchemas[endpointType];
+  } else if (!schema) {
+    const overrideSchema = defaultParamsEndpoint
+      ? compactEndpointSchemas[defaultParamsEndpoint as EndpointSchemaKey]
+      : undefined;
+    schema = overrideSchema ?? (endpointType ? compactEndpointSchemas[endpointType] : undefined);
   }
 
   if (!schema) {