Add standalone engine definition to SSR-Next search #6613

Copilot · 2025-11-20T19:54:53Z

SSR Standalone Search Engine Support - Complete ✅

This PR adds standalone engine definition support to ssr-next/search, following the exact pattern used in commerce SSR-Next. This enables standalone search boxes and other components that don't require server-side search execution.

✅ Implementation Complete

📊 Test Results

Test Files  23 passed (23)
Tests      181 passed (181)

🎯 Key Changes

1. New Standalone Static State Factory

File: packages/headless/src/ssr-next/search/factories/standalone-static-state-factory.ts

Initializes controllers without executing server-side searches
Returns empty searchActions array
Prevents unnecessary API calls for standalone components

2. Updated Search Engine Definition

File: packages/headless/src/ssr-next/search/engine/search-engine.ssr.ts

Before (breaking for new feature):

return {
  fetchStaticState,
  hydrateStaticState,
  getAccessToken,
  setAccessToken,
};

After:

return {
  searchEngineDefinition: {
    fetchStaticState,
    hydrateStaticState,
    getAccessToken,
    setAccessToken,
  },
  standaloneEngineDefinition: {
    fetchStaticState: fetchStandaloneStaticState,
    hydrateStaticState,
    getAccessToken,
    setAccessToken,
  },
};

3. Fixed Hydration Logic

File: packages/headless/src/ssr-next/search/factories/hydrated-state-factory.ts

Added conditional check: only wait for search completion when searchActions.length > 0
Prevents infinite wait for standalone components with no search actions

📝 Usage Example

import {defineSearchEngine, defineStandaloneSearchBox} from '@coveo/headless/ssr-next';

// Define engine with controllers
const {searchEngineDefinition, standaloneEngineDefinition} = defineSearchEngine({
  configuration: {
    organizationId: 'myorg',
    accessToken: 'xxx',
  },
  controllers: {
    standaloneSearchBox: defineStandaloneSearchBox({
      options: {redirectionUrl: '/search'}
    }),
  }
});

// Server-side: On pages with standalone search box ONLY (e.g., homepage, blog)
const staticState = await standaloneEngineDefinition.fetchStaticState({
  navigatorContext: {/* ... */}
});
// ✅ No search executed! Controllers initialized only.

// Server-side: On actual search result pages
const searchState = await searchEngineDefinition.fetchStaticState({
  navigatorContext: {/* ... */},
  searchParams: {q: 'running shoes'}
});
// ✅ Search executed as normal

// Client-side: Hydrate with the static state
const hydratedState = await standaloneEngineDefinition.hydrateStaticState(staticState);

🔄 Backward Compatibility

The implementation maintains full backward compatibility through destructuring:

// Users can destructure only what they need
const {searchEngineDefinition} = defineSearchEngine(config);
const {standaloneEngineDefinition} = defineSearchEngine(config);
const {searchEngineDefinition, standaloneEngineDefinition} = defineSearchEngine(config);

🏗️ Architecture

Follows commerce SSR-Next pattern exactly:

packages/headless/src/ssr-next/commerce/engine/commerce-engine.ssr.ts (reference)
packages/headless/src/ssr-next/commerce/factories/static-state-factory.ts (reference)

🎯 Benefits

Performance: Eliminates unnecessary API calls on pages with standalone components
Server Load: Reduces server-side processing for non-search pages
Flexibility: Developers can choose appropriate definition based on page type
Consistency: Follows established commerce pattern

🔍 Type Safety

Type inference works correctly with both definitions:

type SearchStaticState = InferStaticState<typeof searchEngineDefinition>;
type StandaloneStaticState = InferStaticState<typeof standaloneEngineDefinition>;

Original prompt

This section details on the original issue you should resolve

<issue_title>[DXUI Feature]: Support SSR standalone components</issue_title>
<issue_description>### Feature Description

Feature Request

Add standalone search engine definition support to SSR-Next search implementation (packages/headless/src/ssr-next/search/).

Currently, fetchStaticState() always executes a server-side search, even for standalone search boxes that only need query suggestions and redirection functionality. This creates unnecessary:

API requests to the Coveo platform on every page load
Server load and latency
Resource consumption for pages that don't need search results

Note: This is a new feature for ssr-next/ only (not a breaking change). The older ssr/ implementation will remain unchanged.

Current Behavior

// In packages/headless/src/ssr-next/search/factories/static-state-factory.ts
engine.executeFirstSearch();  // Always executes, no way to skip
const searchActions = [await engine.waitForSearchCompletedAction()];
return createStaticState({searchActions, controllers});

Desired Behavior

Add a new standaloneEngineDefinition option (similar to commerce SSR-Next) that:

Initializes controllers without executing searches
Enables standalone search boxes across the site
Follows the same pattern as commerce's standaloneEngineDefinition
Maintains backward compatibility - existing defineSearchEngine() usage continues to work

Reference Implementation

Commerce SSR-Next already implements this pattern in packages/headless/src/ssr-next/commerce/engine/commerce-engine.ssr.ts:

return {
  listingEngineDefinition: {...},
  searchEngineDefinition: {...},
  standaloneEngineDefinition: {  // ← Search needs this
    fetchStaticState: fetchStaticState(SolutionType.standalone),
    hydrateStaticState: hydrateStaticState(SolutionType.standalone),
  },
};

In commerce's ssr-next/commerce/factories/static-state-factory.ts:

switch (solutionType) {
  case SolutionType.listing:
    buildProductListing(engine).executeFirstRequest();
    break;
  case SolutionType.search:
    buildSearch(engine).executeFirstSearch();
    break;
  // Note: SolutionType.standalone has no case - it skips execution
}

Proposed Implementation

1. Update `defineSearchEngine` to Return Multiple Engine Definitions

IMPORTANT: This changes the return type, making it a new feature rather than modifying existing behavior.

// packages/headless/src/ssr-next/search/engine/search-engine.ssr.ts
export function defineSearchEngine<TControllerDefinitions>(
  options: SearchEngineDefinitionOptions<TControllerDefinitions>
): {
  searchEngineDefinition: SearchEngineDefinition<SSRSearchEngine, TControllerDefinitions>;
  standaloneEngineDefinition: SearchEngineDefinition<SSRSearchEngine, TControllerDefinitions>;
} {
  // Current implementation becomes searchEngineDefinition
  // Add new standaloneEngineDefinition
}

2. Create Standalone Static State Factory

Create a new factory that skips search execution:

// packages/headless/src/ssr-next/search/factories/standalone-static-state-factory.ts (NEW FILE)
export function fetchStandaloneStaticStateFactory<TControllerDefinitions>(
  controllerDefinitions: AugmentedControllerDefinition<TControllerDefinitions>,
  options: SearchEngineDefinitionOptions<TControllerDefinitions>
): FetchStaticStateFunction<TControllerDefinitions> {
  return async (params) => {
    const {engine, controllers} = await buildFactory(
      controllerDefinitions,
      options
    )(params);
    
    // Skip executeFirstSearch() for standalone
    const staticState = createStaticState({
      searchActions: [],  // Empty array - no search executed
      controllers,
    });
    
    return {...params, ...staticState};
  };
}

3. Update Engine Definition to Export Both

// packages/headless/src/ssr-next/search/engine/search-engine.ssr.ts
const fetchStaticState = fetchStaticStateFactory(...);
const fetchStandaloneStaticState = fetchStandaloneStaticStateFactory(...);  // NEW

const hydrateStaticState = hydratedStaticStateFactory(...);

return {
  searchEngineDefinition: {
    fetchStaticState,
    hydrateStaticState,
    getAccessToken,
    setAccessToken,
  },
  standaloneEngineDefinition: {  // NEW
    fetchStaticState: fetchStandaloneStaticState,
    hydrateStaticState,  // Same hydration logic
    getAccessToken,
    setAccessToken,
  },
};

Files to Create/Modify

New Files

packages/headless/src/ssr-next/search/factories/standalone-static-state-factory.ts - Factory that skips search execution
packages/headless/src/ssr-next/search/factories/standalone-static-state-factory.test.ts - Tests for standalone factory

Modified Files

packages/headless/src/ssr-next/search/engine/search-engine.ssr.ts - Update return type and add standalone definition
`packages/headles...

Fixes [DXUI Feature]: Support SSR standalone components #6612

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

- Created standalone-static-state-factory.ts that skips search execution - Added comprehensive tests for standalone factory - Updated search-engine.ssr.ts to return both searchEngineDefinition and standaloneEngineDefinition - Updated hydrated-state-factory.ts to conditionally wait for search completion - Updated search-engine.ssr.test.ts with tests for both definitions and backward compatibility Co-authored-by: y-lakhdar <[email protected]>

packages/headless/src/ssr-next/search/factories/standalone-static-state-factory.ts

packages/headless/src/ssr-next/search/factories/hydrated-state-factory.ts

Co-authored-by: y-lakhdar <[email protected]>

Copilot

Pull request overview

This PR successfully adds standalone engine definition support to SSR-Next search, enabling standalone search boxes and other components without server-side search execution. The implementation closely follows the established pattern from commerce SSR-Next, maintaining consistency across the codebase.

Key accomplishments:

Introduces standaloneEngineDefinition alongside searchEngineDefinition for different use cases
Implements performance optimization by skipping unnecessary API calls on non-search pages
Maintains full backward compatibility through object destructuring
Comprehensive test coverage with 181 passing tests

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
`packages/headless/src/ssr-next/search/factories/standalone-static-state-factory.ts`	New factory that skips server-side search execution and returns empty searchActions array for standalone components
`packages/headless/src/ssr-next/search/factories/standalone-static-state-factory.test.ts`	Comprehensive test suite (7 tests) verifying standalone factory behavior including no search execution and empty searchActions
`packages/headless/src/ssr-next/search/factories/hydrated-state-factory.ts`	Added conditional check to only wait for search completion when searchActions array is non-empty, preventing infinite wait for standalone
`packages/headless/src/ssr-next/search/engine/search-engine.ssr.ts`	Updated to return both searchEngineDefinition and standaloneEngineDefinition, with improved documentation and usage examples
`packages/headless/src/ssr-next/search/engine/search-engine.ssr.test.ts`	Expanded test coverage (16 tests) with dedicated test suites for both definitions and backward compatibility verification

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Initial plan

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Copilot AI assigned Copilot and y-lakhdar Nov 20, 2025

Copilot started work on behalf of y-lakhdar November 20, 2025 19:55 View session

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Copilot AI changed the title ~~[WIP] Add support for SSR standalone components~~ Add standalone engine definition to SSR-Next search Nov 20, 2025

Copilot finished work on behalf of y-lakhdar November 20, 2025 20:15

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Copilot started work on behalf of y-lakhdar November 25, 2025 16:46 View session

Remove explanatory comments from standalone and hydrated state factories

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Co-authored-by: y-lakhdar <[email protected]>

Copilot AI requested a review from y-lakhdar November 25, 2025 16:52

Copilot finished work on behalf of y-lakhdar November 25, 2025 16:52

y-lakhdar mentioned this pull request Nov 25, 2025

Add skipSearch parameter to SSR search fetchStaticState (deprecated) #6615

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y-lakhdar marked this pull request as ready for review November 25, 2025 17:04

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Merge branch 'main' into copilot/add-standalone-search-support

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Add standalone engine definition to SSR-Next search #6613

Add standalone engine definition to SSR-Next search #6613

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SSR Standalone Search Engine Support - Complete ✅

✅ Implementation Complete

📊 Test Results

🎯 Key Changes

1. New Standalone Static State Factory

2. Updated Search Engine Definition

3. Fixed Hydration Logic

📝 Usage Example

🔄 Backward Compatibility

🏗️ Architecture

🎯 Benefits

🔍 Type Safety

Feature Request

Current Behavior

Desired Behavior

Reference Implementation

Proposed Implementation

1. Update defineSearchEngine to Return Multiple Engine Definitions

2. Create Standalone Static State Factory

3. Update Engine Definition to Export Both

Files to Create/Modify

New Files

Modified Files

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Copilot AI commented Nov 20, 2025 •

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1. Update `defineSearchEngine` to Return Multiple Engine Definitions