git-bug/bug/op_set_status.go

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package bug
import (
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"encoding/json"
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"github.com/MichaelMure/git-bug/identity"
"github.com/MichaelMure/git-bug/util/git"
"github.com/MichaelMure/git-bug/util/timestamp"
"github.com/pkg/errors"
)
var _ Operation = &SetStatusOperation{}
// SetStatusOperation will change the status of a bug
type SetStatusOperation struct {
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OpBase
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Status Status
}
func (op *SetStatusOperation) base() *OpBase {
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return &op.OpBase
}
func (op *SetStatusOperation) Hash() (git.Hash, error) {
return hashOperation(op)
}
func (op *SetStatusOperation) Apply(snapshot *Snapshot) {
snapshot.Status = op.Status
snapshot.addActor(op.Author)
hash, err := op.Hash()
if err != nil {
// Should never error unless a programming error happened
// (covered in OpBase.Validate())
panic(err)
}
item := &SetStatusTimelineItem{
hash: hash,
Author: op.Author,
UnixTime: timestamp.Timestamp(op.UnixTime),
Status: op.Status,
}
snapshot.Timeline = append(snapshot.Timeline, item)
}
func (op *SetStatusOperation) Validate() error {
if err := opBaseValidate(op, SetStatusOp); err != nil {
return err
}
if err := op.Status.Validate(); err != nil {
return errors.Wrap(err, "status")
}
return nil
}
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// Workaround to avoid the inner OpBase.MarshalJSON overriding the outer op
// MarshalJSON
func (op *SetStatusOperation) 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
}
data["status"] = op.Status
return json.Marshal(data)
}
// Workaround to avoid the inner OpBase.MarshalJSON overriding the outer op
// MarshalJSON
func (op *SetStatusOperation) UnmarshalJSON(data []byte) error {
// Unmarshal OpBase and the op separately
base := OpBase{}
err := json.Unmarshal(data, &base)
if err != nil {
return err
}
aux := struct {
Status Status `json:"status"`
}{}
err = json.Unmarshal(data, &aux)
if err != nil {
return err
}
op.OpBase = base
op.Status = aux.Status
return nil
}
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// Sign post method for gqlgen
func (op *SetStatusOperation) IsAuthored() {}
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func NewSetStatusOp(author identity.Interface, unixTime int64, status Status) *SetStatusOperation {
return &SetStatusOperation{
OpBase: newOpBase(SetStatusOp, author, unixTime),
Status: status,
}
}
type SetStatusTimelineItem struct {
hash git.Hash
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Author identity.Interface
UnixTime timestamp.Timestamp
Status Status
}
func (s SetStatusTimelineItem) Hash() git.Hash {
return s.hash
}
// Convenience function to apply the operation
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func Open(b Interface, author identity.Interface, unixTime int64) (*SetStatusOperation, error) {
op := NewSetStatusOp(author, unixTime, OpenStatus)
if err := op.Validate(); err != nil {
return nil, err
}
b.Append(op)
return op, nil
}
// Convenience function to apply the operation
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func Close(b Interface, author identity.Interface, unixTime int64) (*SetStatusOperation, error) {
op := NewSetStatusOp(author, unixTime, ClosedStatus)
if err := op.Validate(); err != nil {
return nil, err
}
b.Append(op)
return op, nil
}