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add flag for outputting multiple events

This commit is contained in:
filifa 2024-03-19 20:31:32 -05:00
parent 731ff6384d
commit 233e56a568
1 changed files with 30 additions and 12 deletions
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42
main.go
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@ -33,24 +33,39 @@ func formula(p float64) int64 {
return int64(yearsAgo * 31556926)
}
func (db *TimelineDB) closestEvent(t int64) (EventsRow, error) {
func (db *TimelineDB) closestEvents(t int64, n int) ([]EventsRow, error) {
query := `
select description, timestamp, yearknown, monthknown, dayknown, hourknown, minuteknown, secondknown
from events
where timestamp is not null
order by abs(? - timestamp) asc
limit 1
limit ?
`
var event EventsRow
events := make([]EventsRow, n)
stmt, err := db.Prepare(query)
if err != nil {
return event, err
return events, err
}
defer stmt.Close()
err = stmt.QueryRow(t).Scan(&event.description, &event.timestamp, &event.yearknown, &event.monthknown, &event.dayknown, &event.hourknown, &event.minuteknown, &event.secondknown)
return event, err
rows, err := stmt.Query(t, n)
if err != nil {
return events, err
}
defer rows.Close()
for i := 0; rows.Next(); i++ {
var event EventsRow
err = rows.Scan(&event.description, &event.timestamp, &event.yearknown, &event.monthknown, &event.dayknown, &event.hourknown, &event.minuteknown, &event.secondknown)
if err != nil {
return events, err
}
events[i] = event
}
return events, err
}
func (event *EventsRow) Output() (int64, string, string, error) {
@ -83,6 +98,7 @@ func (event *EventsRow) Output() (int64, string, string, error) {
func main() {
percent := flag.Float64("p", -1, "percentage")
nevents := flag.Int("n", 1, "number of events")
flag.Parse()
if *percent < 0 || *percent > 1 {
@ -99,15 +115,17 @@ func main() {
}
defer db.Close()
event, err := db.closestEvent(t)
events, err := db.closestEvents(t, *nevents)
if err != nil {
log.Fatal(err)
}
timestamp, date, desc, err := event.Output()
if err != nil {
log.Fatal(err)
}
for _, event := range events {
timestamp, date, desc, err := event.Output()
if err != nil {
log.Fatal(err)
}
fmt.Printf("%v\t%v\t%v\n", timestamp, date, desc)
fmt.Printf("%v\t%v\t%v\n", timestamp, date, desc)
}
}