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package column
import (
"time"
"github.com/ClickHouse/clickhouse-go/lib/binary"
)
type DateTime struct {
base
Timezone *time.Location
}
func (dt *DateTime) Read(decoder *binary.Decoder, isNull bool) (interface{}, error) {
sec, err := decoder.Int32()
if err != nil {
return nil, err
}
return time.Unix(int64(sec), 0).In(dt.Timezone), nil
}
func (dt *DateTime) Write(encoder *binary.Encoder, v interface{}) error {
var timestamp int64
switch value := v.(type) {
case time.Time:
if !value.IsZero() {
timestamp = value.Unix()
}
case int16:
timestamp = int64(value)
case int32:
timestamp = int64(value)
case uint32:
timestamp = int64(value)
case uint64:
timestamp = int64(value)
case int64:
timestamp = value
case string:
var err error
timestamp, err = dt.parse(value)
if err != nil {
return err
}
case *time.Time:
if value != nil && !(*value).IsZero() {
timestamp = (*value).Unix()
}
case *int16:
timestamp = int64(*value)
case *int32:
timestamp = int64(*value)
case *int64:
timestamp = *value
case *string:
var err error
timestamp, err = dt.parse(*value)
if err != nil {
return err
}
default:
return &ErrUnexpectedType{
T: v,
Column: dt,
}
}
return encoder.Int32(int32(timestamp))
}
func (dt *DateTime) parse(value string) (int64, error) {
tv, err := time.Parse("2006-01-02 15:04:05", value)
if err != nil {
return 0, err
}
return time.Date(
time.Time(tv).Year(),
time.Time(tv).Month(),
time.Time(tv).Day(),
time.Time(tv).Hour(),
time.Time(tv).Minute(),
time.Time(tv).Second(),
0, time.Local, //use local timzone when insert into clickhouse
).Unix(), nil
}
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