43 lines
673 B
Go
43 lines
673 B
Go
package main
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import (
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"encoding/json"
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"fmt"
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"math/rand"
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"strconv"
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"time"
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)
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type ID struct {
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StrID string
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WasInt bool
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}
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func (id *ID) UnmarshalJSON(data []byte) error {
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var intID int
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err := json.Unmarshal(data, &intID)
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if err == nil {
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*id = ID{strconv.FormatInt(int64(intID), 10), true}
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return nil
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}
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var strID string
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err = json.Unmarshal(data, &strID)
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if err == nil {
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*id = ID{strID, false}
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return nil
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}
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return fmt.Errorf("could not unmarshal %q as an int or string", data)
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}
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func (id *ID) NewID() string {
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if id.WasInt {
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l := time.Now().UnixNano()
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r := rand.Uint64()
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return fmt.Sprintf("_%d_%d", l, r)
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} else {
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return id.StrID
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}
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}
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