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fix(weight): dedup identical same-day readings on ingest #39

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Merged
rwlove merged 1 commit into from
Jun 10, 2026
Merged

fix(weight): dedup identical same-day readings on ingest #39

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13 changes: 12 additions & 1 deletion internal/store/postgres.go
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Original file line number Diff line number Diff line change
Expand Up @@ -300,8 +300,19 @@ func (s *PostgresStore) InsertW(w models.BodyWeight) error {
if w.RecordedAt != "" {
recordedAt = w.RecordedAt
}
// Dedup identical same-day readings. The bt-scale gateway burst-posts the
// same value several times as the reading settles/re-sends, which would
// otherwise pile up duplicate rows (the reason DeleteW deletes by date).
// A genuinely different value on the same day still inserts, so multiple
// distinct weigh-ins per day remain supported (latest recorded_at wins for
// display). NUMERIC comparison ignores decimal-string formatting, so
// "272.2" and "272.20" are treated as equal.
_, err := s.pool.Exec(context.Background(),
"INSERT INTO weight (date, recorded_at, weight) VALUES ($1::date, COALESCE($2::timestamptz, NOW()), $3)",
`INSERT INTO weight (date, recorded_at, weight)
SELECT $1::date, COALESCE($2::timestamptz, NOW()), $3::numeric
WHERE NOT EXISTS (
SELECT 1 FROM weight WHERE date = $1::date AND weight = $3::numeric
)`,
w.Date, recordedAt, w.Weight.String())
return err
}
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