op_set_status.go

  1package bug
  2
  3import (
  4	"encoding/json"
  5
  6	"github.com/MichaelMure/git-bug/identity"
  7	"github.com/MichaelMure/git-bug/util/git"
  8	"github.com/MichaelMure/git-bug/util/timestamp"
  9	"github.com/pkg/errors"
 10)
 11
 12var _ Operation = &SetStatusOperation{}
 13
 14// SetStatusOperation will change the status of a bug
 15type SetStatusOperation struct {
 16	OpBase
 17	Status Status
 18}
 19
 20func (op *SetStatusOperation) base() *OpBase {
 21	return &op.OpBase
 22}
 23
 24func (op *SetStatusOperation) Hash() (git.Hash, error) {
 25	return hashOperation(op)
 26}
 27
 28func (op *SetStatusOperation) Apply(snapshot *Snapshot) {
 29	snapshot.Status = op.Status
 30
 31	hash, err := op.Hash()
 32	if err != nil {
 33		// Should never error unless a programming error happened
 34		// (covered in OpBase.Validate())
 35		panic(err)
 36	}
 37
 38	item := &SetStatusTimelineItem{
 39		hash:     hash,
 40		Author:   op.Author,
 41		UnixTime: timestamp.Timestamp(op.UnixTime),
 42		Status:   op.Status,
 43	}
 44
 45	snapshot.Timeline = append(snapshot.Timeline, item)
 46}
 47
 48func (op *SetStatusOperation) Validate() error {
 49	if err := opBaseValidate(op, SetStatusOp); err != nil {
 50		return err
 51	}
 52
 53	if err := op.Status.Validate(); err != nil {
 54		return errors.Wrap(err, "status")
 55	}
 56
 57	return nil
 58}
 59
 60// Workaround to avoid the inner OpBase.MarshalJSON overriding the outer op
 61// MarshalJSON
 62func (op *SetStatusOperation) MarshalJSON() ([]byte, error) {
 63	base, err := json.Marshal(op.OpBase)
 64	if err != nil {
 65		return nil, err
 66	}
 67
 68	// revert back to a flat map to be able to add our own fields
 69	var data map[string]interface{}
 70	if err := json.Unmarshal(base, &data); err != nil {
 71		return nil, err
 72	}
 73
 74	data["status"] = op.Status
 75
 76	return json.Marshal(data)
 77}
 78
 79// Workaround to avoid the inner OpBase.MarshalJSON overriding the outer op
 80// MarshalJSON
 81func (op *SetStatusOperation) UnmarshalJSON(data []byte) error {
 82	// Unmarshal OpBase and the op separately
 83
 84	base := OpBase{}
 85	err := json.Unmarshal(data, &base)
 86	if err != nil {
 87		return err
 88	}
 89
 90	aux := struct {
 91		Status Status `json:"status"`
 92	}{}
 93
 94	err = json.Unmarshal(data, &aux)
 95	if err != nil {
 96		return err
 97	}
 98
 99	op.OpBase = base
100	op.Status = aux.Status
101
102	return nil
103}
104
105// Sign post method for gqlgen
106func (op *SetStatusOperation) IsAuthored() {}
107
108func NewSetStatusOp(author identity.Interface, unixTime int64, status Status) *SetStatusOperation {
109	return &SetStatusOperation{
110		OpBase: newOpBase(SetStatusOp, author, unixTime),
111		Status: status,
112	}
113}
114
115type SetStatusTimelineItem struct {
116	hash     git.Hash
117	Author   identity.Interface
118	UnixTime timestamp.Timestamp
119	Status   Status
120}
121
122func (s SetStatusTimelineItem) Hash() git.Hash {
123	return s.hash
124}
125
126// Convenience function to apply the operation
127func Open(b Interface, author identity.Interface, unixTime int64) (*SetStatusOperation, error) {
128	op := NewSetStatusOp(author, unixTime, OpenStatus)
129	if err := op.Validate(); err != nil {
130		return nil, err
131	}
132	b.Append(op)
133	return op, nil
134}
135
136// Convenience function to apply the operation
137func Close(b Interface, author identity.Interface, unixTime int64) (*SetStatusOperation, error) {
138	op := NewSetStatusOp(author, unixTime, ClosedStatus)
139	if err := op.Validate(); err != nil {
140		return nil, err
141	}
142	b.Append(op)
143	return op, nil
144}