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segment.go
63 lines (59 loc) · 1.56 KB
/
segment.go
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package repository
import (
"context"
"errors"
"time"
"github.com/breeeaaad/dynamic-segmentation/internal/helpers"
)
func (s *Service) SegmentCr(segment helpers.Segment) error {
var id int
if err := s.conn.QueryRow(
context.Background(),
"insert into segments(segment_name) values($1) returning segment_id",
segment.Name,
).Scan(&id); err != nil {
return err
}
if segment.Percent != 0 {
var count float32
if err := s.conn.QueryRow(context.Background(),
"select count(*) from users").Scan(&count); err != nil {
return err
}
count = count / 100 * segment.Percent
if _, err := s.conn.Exec(
context.Background(),
"insert into adding(user_id,segment_id,added_at) select user_id,$1,$2 from users limit $3",
id, time.Now(), count,
); err != nil {
return err
}
if _, err := s.conn.Exec(
context.Background(),
"insert into history(user_id,segment_name,added_at) select user_id,segment_name,added_at from adding join segments on segments.segment_id=adding.segment_id where adding.segment_id=$1",
id,
); err != nil {
return err
}
}
return nil
}
func (s *Service) SegmentDel(segment helpers.Segment) error {
if tag, err := s.conn.Exec(
context.Background(),
"delete from segments where segment_name=$1",
segment.Name,
); err != nil {
return err
} else if tag.RowsAffected() == 0 {
return errors.New("Не найден сегмент")
}
if _, err := s.conn.Exec(
context.Background(),
"update history set deleted_at=$1 where segment_name=$2",
time.Now(), segment.Name,
); err != nil {
return err
}
return nil
}