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 commentId := entity.CombineIds(snapshot.Id(), op.Id())
59 comment := Comment{
60 id: commentId,
61 Message: op.Message,
62 Author: op.Author_,
63 UnixTime: timestamp.Timestamp(op.UnixTime),
64 }
65
66 snapshot.Comments = []Comment{comment}
67 snapshot.Author = op.Author_
68 snapshot.CreateTime = op.Time()
69
70 snapshot.Timeline = []TimelineItem{
71 &CreateTimelineItem{
72 CommentTimelineItem: NewCommentTimelineItem(commentId, comment),
73 },
74 }
75}
76
77func (op *CreateOperation) GetFiles() []repository.Hash {
78 return op.Files
79}
80
81func (op *CreateOperation) Validate() error {
82 if err := op.OpBase.Validate(op, CreateOp); err != nil {
83 return err
84 }
85
86 if len(op.Nonce) > 64 {
87 return fmt.Errorf("create nonce is too big")
88 }
89 if len(op.Nonce) < 20 {
90 return fmt.Errorf("create nonce is too small")
91 }
92
93 if text.Empty(op.Title) {
94 return fmt.Errorf("title is empty")
95 }
96 if !text.SafeOneLine(op.Title) {
97 return fmt.Errorf("title has unsafe characters")
98 }
99
100 if !text.Safe(op.Message) {
101 return fmt.Errorf("message is not fully printable")
102 }
103
104 return nil
105}
106
107// UnmarshalJSON is a two step JSON unmarshalling
108// This workaround is necessary to avoid the inner OpBase.MarshalJSON
109// overriding the outer op's MarshalJSON
110func (op *CreateOperation) UnmarshalJSON(data []byte) error {
111 // Unmarshal OpBase and the op separately
112
113 base := OpBase{}
114 err := json.Unmarshal(data, &base)
115 if err != nil {
116 return err
117 }
118
119 aux := struct {
120 Nonce []byte `json:"nonce"`
121 Title string `json:"title"`
122 Message string `json:"message"`
123 Files []repository.Hash `json:"files"`
124 }{}
125
126 err = json.Unmarshal(data, &aux)
127 if err != nil {
128 return err
129 }
130
131 op.OpBase = base
132 op.Nonce = aux.Nonce
133 op.Title = aux.Title
134 op.Message = aux.Message
135 op.Files = aux.Files
136
137 return nil
138}
139
140// Sign post method for gqlgen
141func (op *CreateOperation) IsAuthored() {}
142
143func NewCreateOp(author identity.Interface, unixTime int64, title, message string, files []repository.Hash) *CreateOperation {
144 return &CreateOperation{
145 OpBase: newOpBase(CreateOp, author, unixTime),
146 Title: title,
147 Message: message,
148 Files: files,
149 }
150}
151
152// CreateTimelineItem replace a Create operation in the Timeline and hold its edition history
153type CreateTimelineItem struct {
154 CommentTimelineItem
155}
156
157// Sign post method for gqlgen
158func (c *CreateTimelineItem) IsAuthored() {}
159
160// Convenience function to apply the operation
161func Create(author identity.Interface, unixTime int64, title, message string) (*Bug, *CreateOperation, error) {
162 return CreateWithFiles(author, unixTime, title, message, nil)
163}
164
165func CreateWithFiles(author identity.Interface, unixTime int64, title, message string, files []repository.Hash) (*Bug, *CreateOperation, error) {
166 newBug := NewBug()
167 createOp := NewCreateOp(author, unixTime, title, message, files)
168
169 if err := createOp.Validate(); err != nil {
170 return nil, createOp, err
171 }
172
173 newBug.Append(createOp)
174
175 return newBug, createOp, nil
176}