feat(surveys): auto-submit rating and single-choice selections

[lucasheriques]

💡 Motivation and Context

Honor skipSubmitButton in iOS surveys, moving toward survey feature parity across all PostHog SDKs, with posthog-js as the reference. Eligible selections submit through the existing response/navigation callback without an extra tap.

Question	skipSubmitButton: true	False or absent
Numeric/emoji rating	Submit on selection	Explicit submit
Single choice without an open option	Submit on selection	Explicit submit
Single choice with an open option	Explicit submit	Explicit submit
Multiple choice	Explicit submit	Explicit submit

The raw flag is exposed to custom renderers and defaults to false. Each selection forwards its answer once; the next question starts without the previous selection.

Closes #448. Partial-response collection and persistent resume are covered separately in #807.

Review path

1. Interaction tests: real taps, button visibility, answer values and next-question state.
2. Display mapping and question models: flag propagation and eligibility.
3. Question views and SurveySheet: submission and selection reset.

💚 How did you test it?

Passed: make testSurveyUI (7 XCUITests), make test, formatting/lint, API checks and CodeScene. Tests cover eligible/manual paths, open-choice text, multiple choice, optional manual skip, returned branching destinations and exact answer sequences. Removing the question identity reset made the stale-selection regression fail.

Updated against current main, including merged choice shuffling (#811). The single-choice view retains both the auto-submit binding and shuffleOptions; CI retains both survey UI and presentation-masking tests. make test passes (846 Swift Testing cases plus the legacy suite), and formatting/lint pass. Local build/API rechecks are blocked by mismatched Xcode/CoreSimulator components; CI verifies them. CodeScene merge findings are in code brought in from main, outside these conflict resolutions.

The test host mounts the real sheet/controller with a response recorder. Before combining with #807, reconcile the Xcode project conflict and test auto-submit through persistent resume and partial-event capture together.

Sample app screenshots

Captured from this PR's SDK (786fee5) running in the sample app on iPhone 17 Pro simulator, iOS 26.5. A local HTTP fixture supplies the survey; SDK fetching, event targeting and native presentation run through the normal app integration.

Rating: no submit button	After tapping 4: next question	Other: explicit submit

Tapping 4, then Easy to use, advanced without a submit tap. Entering Better search under Other required Submit; the local receiver recorded one survey sent event with all three answers.

📝 Checklist

• Interaction tests and independent review completed.
• API compatibility and changesets covered.

🤖 Agent context

Autonomy: Human-driven (agent-assisted). Codex implemented the changes with independent QA agents; human review is required.

[greptile-apps]

Prompt To Fix All With AI

### Issue 1
PostHog/Surveys/QuestionTypes.swift:155-159
**Auto-submit wiring lacks coverage**

The new tests verify decoding and eligibility, but they do not exercise the SwiftUI behavior added here. There is no interaction test confirming that selecting a rating or single choice calls `onNextQuestion` exactly once with the correct answer, hides the submit button, and resets selection state when the question changes. A regression in this core behavior could therefore pass the test suite. Please add an interaction test that hosts the affected question views or `SurveySheet` and verifies these behaviors.

---

For each issue above, determine whether it is valid and should be fixed. If so, fix it directly.

_{Reviews (1): Last reviewed commit: "feat(surveys): auto-submit rating and si..." | Re-trigger Greptile}

[github-actions]

posthog-ios Compliance Report

Date: 2026-09-15 23:27:29 UTC
Duration: 230675ms

⚠️ Some Tests Failed

44/45 tests passed, 1 failed

---

Capture Tests

⚠️ 28/29 tests passed, 1 failed

View Details

Test	Status	Duration
Format Validation.Event Has Required Fields	✅	2788ms
Format Validation.Event Has Uuid	✅	2616ms
Format Validation.Event Has Lib Properties	✅	2713ms
Format Validation.Distinct Id Is String	✅	2760ms
Format Validation.Token Is Present	✅	2684ms
Format Validation.Custom Properties Preserved	✅	2635ms
Format Validation.Event Has Timestamp	✅	2777ms
Retry Behavior.Retries On 503	✅	11311ms
Retry Behavior.Does Not Retry On 400	✅	4737ms
Retry Behavior.Does Not Retry On 401	✅	4631ms
Retry Behavior.Respects Retry After Header	✅	7726ms
Retry Behavior.Implements Backoff	✅	19143ms
Retry Behavior.Retries On 500	✅	9227ms
Retry Behavior.Retries On 502	✅	9228ms
Retry Behavior.Retries On 504	✅	9225ms
Retry Behavior.Max Retries Respected	❌	21252ms
Deduplication.Generates Unique Uuids	✅	2994ms
Deduplication.Preserves Uuid On Retry	✅	9173ms
Deduplication.Preserves Uuid And Timestamp On Retry	✅	16832ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry	✅	8031ms
Deduplication.No Duplicate Events In Batch	✅	2820ms
Deduplication.Different Events Have Different Uuids	✅	2810ms
Compression.Sends Gzip When Enabled	✅	2731ms
Batch Format.Uses Proper Batch Structure	✅	2623ms
Batch Format.Flush With No Events Sends Nothing	✅	275ms
Batch Format.Multiple Events Batched Together	✅	2728ms
Error Handling.Does Not Retry On 403	✅	4676ms
Error Handling.Does Not Retry On 413	✅	4659ms
Error Handling.Retries On 408	✅	8778ms

Failures

retry_behavior.max_retries_respected

Expected 4 requests, got 6

Feature_Flags Tests

✅ 16/16 tests passed

View Details

Test	Status	Duration
Request Payload.Request With Person Properties Device Id	✅	2641ms
Request Payload.Flags Request Uses V2 Query Param	✅	2814ms
Request Payload.Flags Request Hits Flags Path Not Decide	✅	2828ms
Request Payload.Flags Request Omits Authorization Header	✅	2746ms
Request Payload.Token In Flags Body Matches Init	✅	2845ms
Request Payload.Groups Round Trip	✅	2782ms
Request Payload.Groups Default To Empty Object	✅	2835ms
Request Payload.Person Properties Distinct Id Auto Populated When Caller Omits It	✅	2705ms
Request Payload.Disable Geoip False Propagates As Geoip Disable False	✅	2907ms
Request Payload.Disable Geoip Omitted Defaults To False	✅	3030ms
Request Payload.Flag Keys To Evaluate Contains Only Requested Key	✅	2910ms
Request Lifecycle.No Flags Request On Init Alone	✅	92ms
Request Lifecycle.No Flags Request On Normal Capture	✅	2844ms
Request Lifecycle.Two Flag Calls Produce Two Remote Requests	✅	5538ms
Request Lifecycle.Mock Response Value Is Returned To Caller	✅	2798ms
Side Effect Events.Get Feature Flag Captures Feature Flag Called Event	✅	3162ms

[turnipdabeets]

[suggestion] Flutter will still need a follow-up once this and PostHog/posthog-android#769 are released. Flutter draws its own survey UI from the question data its native bridges pass over, and those bridges don't pass skipSubmitButton yet (PostHogDisplaySurveyExt.kt, PostHogDisplaySurvey+Dict.swift), so Flutter users will keep seeing the Submit button. The follow-up would:

• pass skipSubmitButton through both bridges
• add it to the Dart question models
• submit on tap and hide the button in the rating and choice widgets, using the same rules as here
• bump the native SDK versions

React Native already supports this on main, so Flutter is the only one left.