30 lines
743 B
Go
30 lines
743 B
Go
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package service
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import (
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"encoding/json"
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"fmt"
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"sort"
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"go-places-api/internal/domain"
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)
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// marshalPayload encodes an event payload as JSON.
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func marshalPayload(payload map[string]any) (json.RawMessage, error) {
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body, err := json.Marshal(payload)
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if err != nil {
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return nil, fmt.Errorf("service: marshal event payload: %w", err)
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}
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return json.RawMessage(body), nil
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}
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// sortRelated orders related places by distance, then by identifier so the
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// result is stable for equal distances.
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func sortRelated(in []domain.RelatedPlace) {
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sort.SliceStable(in, func(i, j int) bool {
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if in[i].DistanceMeters != in[j].DistanceMeters {
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return in[i].DistanceMeters < in[j].DistanceMeters
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}
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return in[i].Place.ID < in[j].Place.ID
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})
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}
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