discord: Add message_snapshot support (#453)

* Add new type field

https://discord.com/developers/docs/resources/message#message-reference-structure

* Update with changes

* Add message_snapshot

* fixup

* fixup

* Convert Message to MessageSnapshotMessage

discord/message.go

@@ -23,6 +23,9 @@ type Message struct {
 	// Flags are the MessageFlags.
 	Flags MessageFlags `json:"flags"`
 
+	// The message associated with the message_reference. This is a minimal subset of fields in a message (e.g. author is excluded.)
+	MessageSnapshots []MessageSnapshot `json:"message_snapshots,omitempty"`
+
 	// TTS specifies whether the was a TTS message.
 	TTS bool `json:"tts"`
 	// Pinned specifies whether the message is pinned.
@@ -365,6 +368,65 @@ func (m MessageApplication) CreatedAt() time.Time {
 	return m.ID.Time()
 }
 
+// https://discord.com/developers/docs/resources/message#message-snapshot-object
+type MessageSnapshotMessage struct {
+	// Type is the type of message.
+	Type MessageType `json:"type"`
+
+	// Content contains the contents of the message.
+	Content string `json:"content"`
+
+	// Embeds contains any embedded content.
+	Embeds []Embed `json:"embeds"`
+
+	// Attachments contains any attached files.
+	Attachments []Attachment `json:"attachments"`
+
+	// Timestamp specifies when the message was sent
+	Timestamp Timestamp `json:"timestamp,omitempty"`
+
+	// EditedTimestamp specifies when this message was edited.
+	//
+	// IsValid() will return false, if the messages hasn't been edited.
+	EditedTimestamp Timestamp `json:"edited_timestamp,omitempty"`
+
+	// Flags are the MessageFlags.
+	Flags MessageFlags `json:"flags"`
+
+	// Mentions contains the users specifically mentioned in the message.
+	//
+	// The user objects in the mentions array will only have the partial
+	// member field present in MESSAGE_CREATE and MESSAGE_UPDATE events from
+	// text-based guild channels.
+	Mentions []GuildUser `json:"mentions"`
+
+	// MentionRoleIDs contains the ids of the roles specifically mentioned in
+	// the message.
+	MentionRoleIDs []RoleID `json:"mention_roles"`
+
+	// Stickers contains the sticker "items" sent with the message.
+	Stickers []StickerItem `json:"sticker_items,omitempty"`
+
+	// Components contains any attached components.
+	Components ContainerComponents `json:"components,omitempty"`
+}
+
+// https://discord.com/developers/docs/resources/message#message-snapshot-object
+type MessageSnapshot struct {
+	// The embedded partial message object
+	Message *MessageSnapshotMessage `json:"message"`
+}
+
+const (
+	// A standard reference used by replies.
+	MessageReferenceTypeDefault MessageReferenceType = iota
+	// Reference used to point to a message at a point in time.
+	MessageReferenceTypeForward
+)
+
+// Type of message reference
+type MessageReferenceType int
+
 // MessageReference is used in four situations:
 //
 // # Crosspost messages
@@ -396,6 +458,9 @@ func (m MessageApplication) CreatedAt() time.Time {
 // When sending, only MessageID is required.
 // https://discord.com/developers/docs/resources/channel#message-object-message-reference-structure
 type MessageReference struct {
+	// If type is unset, DEFAULT can be assumed in order to match the behaviour before message reference
+	// had types. In future API versions this will become a required field.
+	Type MessageReferenceType `json:"type"`
 	// MessageID is the id of the originating message.
 	MessageID MessageID `json:"message_id,omitempty"`
 	// ChannelID is the id of the originating message's channel.

go.work.sum

@@ -1,3 +1,6 @@
-github.com/diamondburned/arikawa/v3 v3.0.0-rc.6/go.mod h1:5jBSNnp82Z/EhsKa6Wk9FsOqSxfVkNZDTDBPOj47LpY=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-golang.org/x/sys v0.0.0-20211001092434-39dca1131b70/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
+golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/term v0.24.0/go.mod h1:lOBK/LVxemqiMij05LGJ0tzNr8xlmwBRJ81PX6wVLH8=
+golang.org/x/text v0.18.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
+golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=