[REM-1773] Add media impression tracking event

[ZSnake]

• Add mediaServiceUrl to module
• Add tracking event for media impression view
• Add tracker tests

[claude]

Pull Request Review: Add Media Impression Tracking Event

Summary

This PR adds a new trackMediaImpressionView method to track media impression events, along with a new mediaServiceUrl configuration option. The implementation follows existing patterns in the codebase and includes comprehensive test coverage.

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✅ Code Quality and Best Practices

Strengths:

• Consistent patterns: The implementation follows the established pattern from other tracking methods (similar to trackProductInsightsAgentAnswerFeedback)
• Good documentation: JSDoc comments are thorough with proper @param, @returns, @description, and @example tags
• Backward compatibility: Snake case parameter support (banner_ad_id, placement_id) is maintained alongside camelCase
• Proper TypeScript definitions: Added type definition in src/types/index.d.ts:76

Suggestions:

1. Missing validation: The method doesn't validate that required parameters (bannerAdId, placementId) are actually provided. Consider adding validation like:

   if (!bannerAdId || !placementId) {
     return new Error('bannerAdId and placementId are required parameters');
   }

2. Unused parameter: The resultId parameter is extracted and conditionally added to bodyParams but is not documented in the JSDoc. Either document it or remove it if it's not needed yet (src/modules/tracker.js:1370-1385).

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🐛 Potential Bugs or Issues

1. .only in tests: The test suite has describe.only on line 14542 of spec/src/modules/tracker.js, which will cause all other test suites to be skipped. This must be removed before merging:

   describe.only('trackMediaImpressionView', () => {  // ❌ Remove .only

2. Inconsistent error handling: The method returns Error objects instead of throwing them, which is consistent with other methods but means callers need to check if the return value is an Error:

   const result = tracker.trackMediaImpressionView(params);
   if (result instanceof Error) { /* handle error */ }

   This is an existing pattern in the codebase but worth noting for future refactoring.

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⚡ Performance Considerations

Positive aspects:

• Uses the existing request queue mechanism (this.requests.queue() and this.requests.send())
• Minimal object creation and parameter processing
• No blocking operations

No significant performance concerns - the implementation is lightweight and follows efficient patterns.

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🔒 Security Concerns

Positive aspects:

• Uses the same parameter sanitization as other tracking methods via applyParams()
• Proper URL construction prevents injection issues
• Non-breaking space handling is tested (lines 14799-14840)

Recommendations:

1. URL validation: The mediaServiceUrl parameter is accepted without validation. Consider validating it's a proper HTTPS URL in the constructor (src/constructorio.js:126)
2. Parameter encoding: The tests verify that special characters are handled properly, which is good. The implementation relies on applyParams() for this.

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🧪 Test Coverage

Strengths:

• Comprehensive test suite: 13 test cases covering various scenarios
• Good coverage of edge cases:
  • Required parameters only
  • Required + optional parameters
  • Snake case backward compatibility
  • Invalid/missing parameters
  • Network timeouts
  • Special character handling
  • Non-breaking space transformation
  • Referrer handling (sendReferrerWithTrackingEvents)

Critical Issue:

• Must remove describe.only (spec/src/modules/tracker.js:14542) - this prevents other tests from running

Suggestions:

1. Add a test case for when bannerAdId or placementId is provided but empty string
2. Consider adding a test for the undocumented resultId parameter if it's intentionally supported

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📋 Action Items

Must fix before merging:

1. ❌ Remove describe.only from line 14542 in spec/src/modules/tracker.js

Should address:

1. ⚠️ Add validation for required parameters (bannerAdId, placementId)
2. ⚠️ Document the resultId parameter or remove it if unused
3. ⚠️ Consider adding URL validation for mediaServiceUrl parameter

Nice to have:

1. 💡 Add test for empty string parameters
2. 💡 Add test for resultId parameter if it's meant to be supported

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Overall Assessment

This is a solid implementation that follows the repository's conventions well. The code quality is good, and test coverage is comprehensive. The main blocker is the describe.only that must be removed. The other suggestions would improve robustness but aren't critical for functionality.

Recommendation: Request changes to remove describe.only, then approve after that fix.

[claude]

Pull Request Review: [REM-1773] Add media impression tracking event

Summary

This PR adds a new tracking method trackMediaImpressionView to enable tracking of media banner impressions. The implementation adds support for a new mediaServiceUrl configuration option and includes comprehensive test coverage.

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✅ Code Quality & Best Practices

Strengths:

• Follows established patterns in the codebase consistently
• Includes comprehensive JSDoc documentation with examples
• Supports both camelCase and snake_case parameter naming for backwards compatibility
• Proper parameter validation and error handling
• Uses existing utility functions (helpers.isNil, applyParams, etc.)

Minor Suggestions:

1. Missing TypeScript Definition (src/types/tracker.d.ts)

   • The new trackMediaImpressionView method is not present in the TypeScript definitions file
   • Should add:

   trackMediaImpressionView(
     parameters: {
       bannerAdId: string;
       placementId: string;
       resultId?: string;
       analyticsTags?: Record<string, string>;
     },
     networkParameters?: NetworkParameters
   ): true | Error;

2. Inconsistent Spacing (src/modules/tracker.js:1362)

   • Extra blank line after the if statement on line 1361
   • Consider removing for consistency with other methods in the file

3. Unused Parameter in JSDoc (src/modules/tracker.js:1370-1371)

   • The resultId parameter is destructured and conditionally added to bodyParams, but it's not documented in the JSDoc comment
   • Should add to JSDoc: @param {string} [parameters.resultId] - Result identifier

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🐛 Potential Issues

None identified - The implementation looks solid with proper error handling.

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⚡ Performance Considerations

• ✅ Uses request queueing mechanism already in place
• ✅ No blocking operations or unnecessary computations
• ✅ Proper string handling for non-breaking spaces (consistent with existing patterns)

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🔒 Security Concerns

• ✅ No user input is directly concatenated into URLs
• ✅ Parameters are properly sanitized through applyParams utility
• ✅ Uses POST method (appropriate for tracking events)
• ✅ No sensitive data exposure risks

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🧪 Test Coverage

Excellent test coverage! The test suite includes:

✅ Backwards compatibility (snake_case parameters)
✅ Required parameters validation
✅ Optional parameters (analyticsTags)
✅ Error handling (invalid/missing parameters)
✅ sendReferrerWithTrackingEvents configuration option
✅ Network timeout handling
✅ Special character encoding
✅ Non-breaking space transformation

Test Quality:

• Comprehensive coverage of edge cases
• Follows existing test patterns consistently
• Tests both positive and negative scenarios

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📝 Recommendations

High Priority:

1. Add TypeScript definitions for the new method in src/types/tracker.d.ts

Low Priority:

2. Remove extra blank line in tracker.js:1362
3. Document the resultId parameter in JSDoc if it's intentionally supported

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Overall Assessment

This is a well-implemented PR that follows the existing codebase patterns and includes excellent test coverage. The only blocking issue is the missing TypeScript definition. Once that's added, this should be ready to merge.

Recommendation: Approve with minor changes requested (TypeScript definitions)

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🤖 Generated with Claude Code

[esezen]

@ZSnake the PR is looking good. I left 2 small comments. Also do you mind updating the types for tracker?

[esezen]

LGTM!