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-rw-r--r--bug/op_set_title.go96
1 files changed, 96 insertions, 0 deletions
diff --git a/bug/op_set_title.go b/bug/op_set_title.go
new file mode 100644
index 00000000..74467ec2
--- /dev/null
+++ b/bug/op_set_title.go
@@ -0,0 +1,96 @@
+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
+ snapshot.Timeline = append(snapshot.Timeline, op)
+}
+
+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,
+ }
+}
+
+// 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
+}