Split Frequency model into clear types - #1333
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The current Frequency model mixes two different concepts together. This causes data issues, such as hiding exact times and including extra schedule details that are not needed. This update splits the model into three distinct parts: - FrequencyWindow: A shared base for common fields. - Frequency: Shows exact times for trip-focused data. - ScheduleFrequency: Adds details like service date and trip ID specifically for station schedules. It also cleans up repeated code in the trip details handler and updates the tests to make sure everything works with the new shapes.
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📝 WalkthroughWalkthroughThe PR separates shared timing data, generic frequency data, and schedule-specific frequency data. It updates schedule storage, database conversion, JSON behavior, REST conversion, and related test fixtures. ChangesFrequency model separation
Estimated code review effort: 3 (Moderate) | ~20 minutes Mergeability Score: ⚪ Minimal · up to The model split changes frequency JSON behavior, but the supplied evidence identifies only a bounded test-completeness follow-up; no actionable merge-blocking risk remains after normal checks and review. Possibly related issues
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✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
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Inline comments:
In `@internal/models/trip_details_test.go`:
- Around line 69-74: Update the JSON round-trip assertions in
internal/models/trip_details_test.go at lines 69-74 to compare the decoded
Frequency with the original, covering FrequencyWindow and ExactTimes. In
internal/models/trips_for_location_test.go at lines 13-17, compare the complete
FrequencyWindow, including StartTime, EndTime, and Headway.
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📒 Files selected for processing (8)
internal/models/frequency.gointernal/models/frequency_test.gointernal/models/schedule_for_trip_details_test.gointernal/models/stop_time_schedule.gointernal/models/stop_time_schedule_test.gointernal/models/trip_details_test.gointernal/models/trips_for_location_test.gointernal/restapi/trip_details_handler.go
💤 Files with no reviewable changes (1)
- internal/restapi/trip_details_handler.go
Run the Go formatter on stop_time_schedule.go to fix a spacing issue and pass the CI build. Also, add missing checks in the trip details and location tests. This ensures that all new frequency fields, like exactTimes, are fully verified when converting to and from JSON.
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aaronbrethorst
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This looks good — ready to merge.
This implements #1147 faithfully, and I checked the part that would have worried me: the old test asserted exactTimes must not serialize, with a comment citing API backward compatibility. Reversing that is sanctioned here, not accidental — #1147 prescribes exactly this split, and the spec types frequency as an untyped nullable string at all five embed sites, so there's no field-level contract to break.
The rest holds up. NewFrequencyFromDB and NewStopRouteDirectionSchedule are the only construction sites for the two types and both are migrated; every other Frequency: assignment is nil. The nil-versus-empty semantics are preserved — frequency still marshals to null, and scheduleFrequencies still normalizes nil to []. FrequencyWindow is embedded anonymously with no tag and no custom marshaler, so the fields inline correctly.
Splitting a type that was quietly serving two masters is unglamorous work that pays off every time someone reads it afterward. Nice.
One note for whoever populates ScheduleFrequency later: stopHeadsign, arrivalEnabled, and departureEnabled aren't in the spec's ScheduleFrequency schema. #1147 analyzes that gap deliberately, and nothing populates them today, so it isn't a divergence yet — but it will be the moment something does.
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Description
This PR resolves the architectural conflation in the
models.Frequencystruct, which previously mixed two distinct legacy Java beans (FrequencyV2BeanandScheduleFrequencyInstanceV2Bean).By properly scoping these types, we fix the missing
exactTimesfield in trip-centric endpoints and remove redundant schedule identifiers from contexts where they are not needed.Changes Included
FrequencyWindowbase struct.Frequencystruct to embedFrequencyWindow, removed schedule-specific fields (serviceDate,serviceId,tripId), and removed thejson:"-"tag fromexactTimes.ScheduleFrequencyforschedule-for-stopcontaining the required routing identifiers and boolean flags.trip_details_handler.goto remove redundant assignments ofServiceDate,ServiceID, andTripIDto the frequency object.FrequencyWindowembedding.ScheduleFrequency, includingomitemptyedge cases forstopHeadsign.Resolves: #1147
Fixes: #1056 (Exposes
exactTimesin JSON output)Fixes: #618 (Prepares exact schema for
schedule-for-stop)Summary by CodeRabbit
API Improvements
Bug Fixes