package bug import ( "fmt" "strings" "github.com/MichaelMure/git-bug/util/git" "github.com/MichaelMure/git-bug/util/text" ) var _ Operation = &SetTitleOperation{} // SetTitleOperation will change the title of a bug type SetTitleOperation struct { OpBase Title string `json:"title"` Was string `json:"was"` } func (op *SetTitleOperation) base() *OpBase { return &op.OpBase } func (op *SetTitleOperation) Hash() (git.Hash, error) { return hashOperation(op) } func (op *SetTitleOperation) Apply(snapshot *Snapshot) { snapshot.Title = op.Title hash, err := op.Hash() if err != nil { // Should never error unless a programming error happened // (covered in OpBase.Validate()) panic(err) } item := &SetTitleTimelineItem{ hash: hash, Author: op.Author, UnixTime: Timestamp(op.UnixTime), Title: op.Title, Was: op.Was, } snapshot.Timeline = append(snapshot.Timeline, item) } func (op *SetTitleOperation) Validate() error { if err := opBaseValidate(op, SetTitleOp); err != nil { return err } if text.Empty(op.Title) { return fmt.Errorf("title is empty") } if strings.Contains(op.Title, "\n") { return fmt.Errorf("title should be a single line") } if !text.Safe(op.Title) { return fmt.Errorf("title should be fully printable") } if strings.Contains(op.Was, "\n") { return fmt.Errorf("previous title should be a single line") } if !text.Safe(op.Was) { return fmt.Errorf("previous title should be fully printable") } return nil } func NewSetTitleOp(author Person, unixTime int64, title string, was string) *SetTitleOperation { return &SetTitleOperation{ OpBase: newOpBase(SetTitleOp, author, unixTime), Title: title, Was: was, } } type SetTitleTimelineItem struct { hash git.Hash Author Person UnixTime Timestamp Title string Was string } func (s SetTitleTimelineItem) Hash() git.Hash { return s.hash } // Convenience function to apply the operation func SetTitle(b Interface, author Person, unixTime int64, title string) error { it := NewOperationIterator(b) var lastTitleOp Operation for it.Next() { op := it.Value() if op.base().OperationType == SetTitleOp { lastTitleOp = op } } var was string if lastTitleOp != nil { was = lastTitleOp.(*SetTitleOperation).Title } else { was = b.FirstOp().(*CreateOperation).Title } setTitleOp := NewSetTitleOp(author, unixTime, title, was) if err := setTitleOp.Validate(); err != nil { return err } b.Append(setTitleOp) return nil }