Move CopyXProperties and related functionality from the processing package

Changes

1 changed files (+172/-0)

• copy.go (new)
  • @@ -0,0 +1,172 @@
    + package activitypub + + import ( + "fmt" + ) + + // CopyObjectProperties updates the "old" object properties with "new's" + func CopyObjectProperties(old, new *Object) (*Object, error) { + old.Name = replaceIfNaturalLanguageValues(old.Name, new.Name) + old.Attachment = replaceIfItem(old.Attachment, new.Attachment) + old.AttributedTo = replaceIfItem(old.AttributedTo, new.AttributedTo) + old.Audience = replaceIfItemCollection(old.Audience, new.Audience) + old.Content = replaceIfNaturalLanguageValues(old.Content, new.Content) + old.Context = replaceIfItem(old.Context, new.Context) + if len(new.MediaType) > 0 { + old.MediaType = new.MediaType + } + if !new.EndTime.IsZero() { + old.EndTime = new.EndTime + } + old.Generator = replaceIfItem(old.Generator, new.Generator) + old.Icon = replaceIfItem(old.Icon, new.Icon) + old.Image = replaceIfItem(old.Image, new.Image) + old.InReplyTo = replaceIfItem(old.InReplyTo, new.InReplyTo) + old.Location = replaceIfItem(old.Location, new.Location) + old.Preview = replaceIfItem(old.Preview, new.Preview) + if old.Published.IsZero() && !new.Published.IsZero() { + old.Published = new.Published + } + old.Replies = replaceIfItem(old.Replies, new.Replies) + if !new.StartTime.IsZero() { + old.StartTime = new.StartTime + } + old.Summary = replaceIfNaturalLanguageValues(old.Summary, new.Summary) + old.Tag = replaceIfItemCollection(old.Tag, new.Tag) + if !new.Updated.IsZero() { + old.Updated = new.Updated + } + if new.URL != nil { + old.URL = new.URL + } + old.To = replaceIfItemCollection(old.To, new.To) + old.Bto = replaceIfItemCollection(old.Bto, new.Bto) + old.CC = replaceIfItemCollection(old.CC, new.CC) + old.BCC = replaceIfItemCollection(old.BCC, new.BCC) + if new.Duration == 0 { + old.Duration = new.Duration + } + old.Source = replaceIfSource(old.Source, new.Source) + return old, nil + } + + // CopyItemProperties delegates to the correct per type functions for copying + // properties between matching Activity Objects + func CopyItemProperties(to, from Item) (Item, error) { + if to == nil { + return to, fmt.Errorf("nil object to update") + } + if from == nil { + return to, fmt.Errorf("nil object for update") + } + if !to.GetLink().Equals(from.GetLink(), false) { + return to, fmt.Errorf("object IDs don't match") + } + if to.GetType() != from.GetType() { + return to, fmt.Errorf("invalid object types for update %s(old) and %s(new)", from.GetType(), to.GetType()) + } + if ActorTypes.Contains(to.GetType()) { + o, err := ToActor(to) + if err != nil { + return o, err + } + n, err := ToActor(from) + if err != nil { + return o, err + } + return UpdatePersonProperties(o, n) + } + if ObjectTypes.Contains(to.GetType()) { + o, err := ToObject(to) + if err != nil { + return o, err + } + n, err := ToObject(from) + if err != nil { + return o, err + } + return CopyObjectProperties(o, n) + } + return to, fmt.Errorf("could not process objects with type %s", to.GetType()) + } + + // UpdatePersonProperties + func UpdatePersonProperties(old, new *Actor) (*Actor, error) { + old.Name = replaceIfNaturalLanguageValues(old.Name, new.Name) + old.Attachment = replaceIfItem(old.Attachment, new.Attachment) + old.AttributedTo = replaceIfItem(old.AttributedTo, new.AttributedTo) + old.Audience = replaceIfItemCollection(old.Audience, new.Audience) + old.Content = replaceIfNaturalLanguageValues(old.Content, new.Content) + old.Context = replaceIfItem(old.Context, new.Context) + if len(new.MediaType) > 0 { + old.MediaType = new.MediaType + } + if !new.EndTime.IsZero() { + old.EndTime = new.EndTime + } + old.Generator = replaceIfItem(old.Generator, new.Generator) + old.Icon = replaceIfItem(old.Icon, new.Icon) + old.Image = replaceIfItem(old.Image, new.Image) + old.InReplyTo = replaceIfItem(old.InReplyTo, new.InReplyTo) + old.Location = replaceIfItem(old.Location, new.Location) + old.Preview = replaceIfItem(old.Preview, new.Preview) + if old.Published.IsZero() && !new.Published.IsZero() { + old.Published = new.Published + } + old.Replies = replaceIfItem(old.Replies, new.Replies) + if !new.StartTime.IsZero() { + old.StartTime = new.StartTime + } + old.Summary = replaceIfNaturalLanguageValues(old.Summary, new.Summary) + old.Tag = replaceIfItemCollection(old.Tag, new.Tag) + if !new.Updated.IsZero() { + old.Updated = new.Updated + } + if new.URL != nil { + old.URL = new.URL + } + old.To = replaceIfItemCollection(old.To, new.To) + old.Bto = replaceIfItemCollection(old.Bto, new.Bto) + old.CC = replaceIfItemCollection(old.CC, new.CC) + old.BCC = replaceIfItemCollection(old.BCC, new.BCC) + if new.Duration == 0 { + old.Duration = new.Duration + } + old.Source = replaceIfSource(old.Source, new.Source) + old.Inbox = replaceIfItem(old.Inbox, new.Inbox) + old.Outbox = replaceIfItem(old.Outbox, new.Outbox) + old.Following = replaceIfItem(old.Following, new.Following) + old.Followers = replaceIfItem(old.Followers, new.Followers) + old.Liked = replaceIfItem(old.Liked, new.Liked) + old.PreferredUsername = replaceIfNaturalLanguageValues(old.PreferredUsername, new.PreferredUsername) + return old, nil + } + + func replaceIfItem(old, new Item) Item { + if new == nil { + return old + } + return new + } + + func replaceIfItemCollection(old, new ItemCollection) ItemCollection { + if new == nil { + return old + } + return new + } + + func replaceIfNaturalLanguageValues(old, new NaturalLanguageValues) NaturalLanguageValues { + if new == nil { + return old + } + return new + } + + func replaceIfSource(old, new Source) Source { + if new.MediaType != old.MediaType { + return new + } + old.Content = replaceIfNaturalLanguageValues(old.Content, new.Content) + return old + }