1package bug
2
3import (
4 "encoding/json"
5 "fmt"
6
7 "github.com/MichaelMure/git-bug/entity"
8 "github.com/MichaelMure/git-bug/entity/dag"
9 "github.com/MichaelMure/git-bug/identity"
10 "github.com/MichaelMure/git-bug/repository"
11 "github.com/MichaelMure/git-bug/util/text"
12 "github.com/MichaelMure/git-bug/util/timestamp"
13)
14
15var _ Operation = &CreateOperation{}
16var _ dag.OperationWithFiles = &CreateOperation{}
17
18// CreateOperation define the initial creation of a bug
19type CreateOperation struct {
20 OpBase
21 Title string `json:"title"`
22 Message string `json:"message"`
23 Files []repository.Hash `json:"files"`
24}
25
26func (op *CreateOperation) Id() entity.Id {
27 return idOperation(op, &op.OpBase)
28}
29
30// OVERRIDE
31func (op *CreateOperation) SetMetadata(key string, value string) {
32 // sanity check: we make sure we are not in the following scenario:
33 // - the bug is created with a first operation
34 // - Id() is used
35 // - metadata are added, which will change the Id
36 // - Id() is used again
37
38 if op.id != entity.UnsetId {
39 panic("usage of Id() after changing the first operation")
40 }
41
42 op.OpBase.SetMetadata(key, value)
43}
44
45func (op *CreateOperation) Apply(snapshot *Snapshot) {
46 // sanity check: will fail when adding a second Create
47 if snapshot.id != "" && snapshot.id != entity.UnsetId && snapshot.id != op.Id() {
48 panic("adding a second Create operation")
49 }
50
51 snapshot.id = op.Id()
52
53 snapshot.addActor(op.Author_)
54 snapshot.addParticipant(op.Author_)
55
56 snapshot.Title = op.Title
57
58 comment := Comment{
59 id: entity.CombineIds(snapshot.Id(), op.Id()),
60 Message: op.Message,
61 Author: op.Author_,
62 UnixTime: timestamp.Timestamp(op.UnixTime),
63 }
64
65 snapshot.Comments = []Comment{comment}
66 snapshot.Author = op.Author_
67 snapshot.CreateTime = op.Time()
68
69 snapshot.Timeline = []TimelineItem{
70 &CreateTimelineItem{
71 CommentTimelineItem: NewCommentTimelineItem(comment),
72 },
73 }
74}
75
76func (op *CreateOperation) GetFiles() []repository.Hash {
77 return op.Files
78}
79
80func (op *CreateOperation) Validate() error {
81 if err := op.OpBase.Validate(op, CreateOp); err != nil {
82 return err
83 }
84
85 if len(op.Nonce) > 64 {
86 return fmt.Errorf("create nonce is too big")
87 }
88 if len(op.Nonce) < 20 {
89 return fmt.Errorf("create nonce is too small")
90 }
91
92 if text.Empty(op.Title) {
93 return fmt.Errorf("title is empty")
94 }
95 if !text.SafeOneLine(op.Title) {
96 return fmt.Errorf("title has unsafe characters")
97 }
98
99 if !text.Safe(op.Message) {
100 return fmt.Errorf("message is not fully printable")
101 }
102
103 return nil
104}
105
106// UnmarshalJSON is a two step JSON unmarshalling
107// This workaround is necessary to avoid the inner OpBase.MarshalJSON
108// overriding the outer op's MarshalJSON
109func (op *CreateOperation) UnmarshalJSON(data []byte) error {
110 // Unmarshal OpBase and the op separately
111
112 base := OpBase{}
113 err := json.Unmarshal(data, &base)
114 if err != nil {
115 return err
116 }
117
118 aux := struct {
119 Nonce []byte `json:"nonce"`
120 Title string `json:"title"`
121 Message string `json:"message"`
122 Files []repository.Hash `json:"files"`
123 }{}
124
125 err = json.Unmarshal(data, &aux)
126 if err != nil {
127 return err
128 }
129
130 op.OpBase = base
131 op.Nonce = aux.Nonce
132 op.Title = aux.Title
133 op.Message = aux.Message
134 op.Files = aux.Files
135
136 return nil
137}
138
139// Sign post method for gqlgen
140func (op *CreateOperation) IsAuthored() {}
141
142func NewCreateOp(author identity.Interface, unixTime int64, title, message string, files []repository.Hash) *CreateOperation {
143 return &CreateOperation{
144 OpBase: newOpBase(CreateOp, author, unixTime),
145 Title: title,
146 Message: message,
147 Files: files,
148 }
149}
150
151// CreateTimelineItem replace a Create operation in the Timeline and hold its edition history
152type CreateTimelineItem struct {
153 CommentTimelineItem
154}
155
156// Sign post method for gqlgen
157func (c *CreateTimelineItem) IsAuthored() {}
158
159// Convenience function to apply the operation
160func Create(author identity.Interface, unixTime int64, title, message string) (*Bug, *CreateOperation, error) {
161 return CreateWithFiles(author, unixTime, title, message, nil)
162}
163
164func CreateWithFiles(author identity.Interface, unixTime int64, title, message string, files []repository.Hash) (*Bug, *CreateOperation, error) {
165 newBug := NewBug()
166 createOp := NewCreateOp(author, unixTime, title, message, files)
167
168 if err := createOp.Validate(); err != nil {
169 return nil, createOp, err
170 }
171
172 newBug.Append(createOp)
173
174 return newBug, createOp, nil
175}