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package bug
import (
"encoding/json"
"github.com/MichaelMure/git-bug/identity"
"github.com/MichaelMure/git-bug/util/git"
)
var _ Operation = &NoOpOperation{}
// NoOpOperation is an operation that does not change the bug state. It can
// however be used to store arbitrary metadata in the bug history, for example
// to support a bridge feature
type NoOpOperation struct {
OpBase
}
func (op *NoOpOperation) base() *OpBase {
return &op.OpBase
}
func (op *NoOpOperation) Hash() (git.Hash, error) {
return hashOperation(op)
}
func (op *NoOpOperation) Apply(snapshot *Snapshot) {
// Nothing to do
}
func (op *NoOpOperation) Validate() error {
return opBaseValidate(op, NoOpOp)
}
// Workaround to avoid the inner OpBase.MarshalJSON overriding the outer op
// MarshalJSON
func (op *NoOpOperation) MarshalJSON() ([]byte, error) {
base, err := json.Marshal(op.OpBase)
if err != nil {
return nil, err
}
// revert back to a flat map to be able to add our own fields
var data map[string]interface{}
if err := json.Unmarshal(base, &data); err != nil {
return nil, err
}
return json.Marshal(data)
}
// Workaround to avoid the inner OpBase.MarshalJSON overriding the outer op
// MarshalJSON
func (op *NoOpOperation) UnmarshalJSON(data []byte) error {
// Unmarshal OpBase and the op separately
base := OpBase{}
err := json.Unmarshal(data, &base)
if err != nil {
return err
}
aux := struct{}{}
err = json.Unmarshal(data, &aux)
if err != nil {
return err
}
op.OpBase = base
return nil
}
// Sign post method for gqlgen
func (op *NoOpOperation) IsAuthored() {}
func NewNoOpOp(author identity.Interface, unixTime int64) *NoOpOperation {
return &NoOpOperation{
OpBase: newOpBase(NoOpOp, author, unixTime),
}
}
// Convenience function to apply the operation
func NoOp(b Interface, author identity.Interface, unixTime int64, metadata map[string]string) (*NoOpOperation, error) {
op := NewNoOpOp(author, unixTime)
for key, value := range metadata {
op.SetMetadata(key, value)
}
if err := op.Validate(); err != nil {
return nil, err
}
b.Append(op)
return op, nil
}
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