Add guild preview endpoint (#818)

endpoints.go

@@ -78,6 +78,7 @@ var (
 	EndpointUserNotes         = func(uID string) string { return EndpointUsers + "@me/notes/" + uID }
 
 	EndpointGuild                = func(gID string) string { return EndpointGuilds + gID }
+	EndpointGuildPreview         = func(gID string) string { return EndpointGuilds + gID + "/preview" }
 	EndpointGuildChannels        = func(gID string) string { return EndpointGuilds + gID + "/channels" }
 	EndpointGuildMembers         = func(gID string) string { return EndpointGuilds + gID + "/members" }
 	EndpointGuildMember          = func(gID, uID string) string { return EndpointGuilds + gID + "/members/" + uID }

restapi.go

@@ -588,6 +588,18 @@ func (s *Session) Guild(guildID string) (st *Guild, err error) {
 	return
 }
 
+// GuildPreview returns a GuildPreview structure of a specific public Guild.
+// guildID   : The ID of a Guild
+func (s *Session) GuildPreview(guildID string) (st *GuildPreview, err error) {
+	body, err := s.RequestWithBucketID("GET", EndpointGuildPreview(guildID), nil, EndpointGuildPreview(guildID))
+	if err != nil {
+		return
+	}
+
+	err = unmarshal(body, &st)
+	return
+}
+
 // GuildCreate creates a new Guild
 // name      : A name for the Guild (2-100 characters)
 func (s *Session) GuildCreate(name string) (st *Guild, err error) {

structs.go

@@ -152,7 +152,7 @@ type Integration struct {
 	SyncedAt          Timestamp          `json:"synced_at"`
 }
 
-//ExpireBehavior of Integration
+// ExpireBehavior of Integration
 // https://discord.com/developers/docs/resources/guild#integration-object-integration-expire-behaviors
 type ExpireBehavior int
 
@@ -572,6 +572,40 @@ type Guild struct {
 	Permissions int64 `json:"permissions,string"`
 }
 
+// A GuildPreview holds data related to a specific public Discord Guild, even if the user is not in the guild.
+type GuildPreview struct {
+	// The ID of the guild.
+	ID string `json:"id"`
+
+	// The name of the guild. (2–100 characters)
+	Name string `json:"name"`
+
+	// The hash of the guild's icon. Use Session.GuildIcon
+	// to retrieve the icon itself.
+	Icon string `json:"icon"`
+
+	// The hash of the guild's splash.
+	Splash string `json:"splash"`
+
+	// The hash of the guild's discovery splash.
+	DiscoverySplash string `json:"discovery_splash"`
+
+	// A list of the custom emojis present in the guild.
+	Emojis []*Emoji `json:"emojis"`
+
+	// The list of enabled guild features
+	Features []string `json:"features"`
+
+	// Approximate number of members in this guild, returned from the GET /guild/<id> endpoint when with_counts is true
+	ApproximateMemberCount int `json:"approximate_member_count"`
+
+	// Approximate number of non-offline members in this guild, returned from the GET /guild/<id> endpoint when with_counts is true
+	ApproximatePresenceCount int `json:"approximate_presence_count"`
+
+	// the description for the guild
+	Description string `json:"description"`
+}
+
 // MessageNotifications is the notification level for a guild
 // https://discord.com/developers/docs/resources/guild#guild-object-default-message-notification-level
 type MessageNotifications int