1package bug
 2
 3import (
 4	"github.com/MichaelMure/git-bug/util"
 5	"time"
 6)
 7
 8// OperationType is an identifier
 9type OperationType int
10
11const (
12	_ OperationType = iota
13	CreateOp
14	SetTitleOp
15	AddCommentOp
16	SetStatusOp
17	LabelChangeOp
18)
19
20// Operation define the interface to fulfill for an edit operation of a Bug
21type Operation interface {
22	// OpType return the type of operation
23	OpType() OperationType
24	// Time return the time when the operation was added
25	Time() time.Time
26	// Apply the operation to a Snapshot to create the final state
27	Apply(snapshot Snapshot) Snapshot
28	// Files return the files needed by this operation
29	Files() []util.Hash
30
31	// TODO: data validation (ex: a title is a single line)
32	// Validate() bool
33}
34
35// OpBase implement the common code for all operations
36type OpBase struct {
37	OperationType OperationType
38	Author        Person
39	UnixTime      int64
40}
41
42// NewOpBase is the constructor for an OpBase
43func NewOpBase(opType OperationType, author Person) OpBase {
44	return OpBase{
45		OperationType: opType,
46		Author:        author,
47		UnixTime:      time.Now().Unix(),
48	}
49}
50
51// OpType return the type of operation
52func (op OpBase) OpType() OperationType {
53	return op.OperationType
54}
55
56// Time return the time when the operation was added
57func (op OpBase) Time() time.Time {
58	return time.Unix(op.UnixTime, 0)
59}
60
61// Files return the files needed by this operation
62func (op OpBase) Files() []util.Hash {
63	return nil
64}