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package entity
import "fmt"
// MergeStatus represent the result of a merge operation of an entity
type MergeStatus int
const (
_ MergeStatus = iota
MergeStatusNew
MergeStatusInvalid
MergeStatusUpdated
MergeStatusNothing
)
type MergeResult struct {
// Err is set when a terminal error occur in the process
Err error
Id string
Status MergeStatus
// Only set for invalid status
Reason string
// Not set for invalid status
Entity Interface
}
func (mr MergeResult) String() string {
switch mr.Status {
case MergeStatusNew:
return "new"
case MergeStatusInvalid:
return fmt.Sprintf("invalid data: %s", mr.Reason)
case MergeStatusUpdated:
return "updated"
case MergeStatusNothing:
return "nothing to do"
default:
panic("unknown merge status")
}
}
func NewMergeError(err error, id string) MergeResult {
return MergeResult{
Err: err,
Id: id,
}
}
func NewMergeStatus(status MergeStatus, id string, entity Interface) MergeResult {
return MergeResult{
Id: id,
Status: status,
// Entity is not set for an invalid merge result
Entity: entity,
}
}
func NewMergeInvalidStatus(id string, reason string) MergeResult {
return MergeResult{
Id: id,
Status: MergeStatusInvalid,
Reason: reason,
}
}
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