// Munge is the workhorse the will actually make updates to the PR
func (p *PathLabelMunger) Munge(obj *github.MungeObject) {
if !obj.IsPR() {
return
}
files, err := obj.ListFiles()
if err != nil {
return
}
needsLabels := sets.NewString()
for _, f := range files {
for _, lm := range p.labelMap {
if lm.regexp.MatchString(*f.Filename) {
needsLabels.Insert(lm.label)
}
}
}
// This is all labels on the issue that the path munger controls
hasLabels := obj.LabelSet().Intersection(p.allLabels)
missingLabels := needsLabels.Difference(hasLabels)
if missingLabels.Len() != 0 {
obj.AddLabels(needsLabels.List())
}
extraLabels := hasLabels.Difference(needsLabels)
for _, label := range extraLabels.List() {
creator := obj.LabelCreator(label)
if creator == botName {
obj.RemoveLabel(label)
}
}
}