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package operations
import (
"github.com/MichaelMure/git-bug/bug"
"sort"
)
// LabelChangeOperation will add or remove a set of labels
var _ bug.Operation = LabelChangeOperation{}
type LabelChangeOperation struct {
bug.OpBase
Added []bug.Label
Removed []bug.Label
}
func NewLabelChangeOperation(author bug.Person, added, removed []bug.Label) LabelChangeOperation {
return LabelChangeOperation{
OpBase: bug.NewOpBase(bug.LabelChangeOp, author),
Added: added,
Removed: removed,
}
}
func (op LabelChangeOperation) Apply(snapshot bug.Snapshot) bug.Snapshot {
// Add in the set
AddLoop:
for _, added := range op.Added {
for _, label := range snapshot.Labels {
if label == added {
// Already exist
continue AddLoop
}
}
snapshot.Labels = append(snapshot.Labels, added)
}
// Remove in the set
for _, removed := range op.Removed {
for i, label := range snapshot.Labels {
if label == removed {
snapshot.Labels[i] = snapshot.Labels[len(snapshot.Labels)-1]
snapshot.Labels = snapshot.Labels[:len(snapshot.Labels)-1]
}
}
}
// Sort
sort.Slice(snapshot.Labels, func(i, j int) bool {
return string(snapshot.Labels[i]) < string(snapshot.Labels[j])
})
return snapshot
}
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