feat(UserGuilds)!: support with_counts parameter (#1500)

---------

Co-authored-by: Fedor Lapshin <fe.lap.prog@gmail.com>

restapi.go

@@ -424,10 +424,11 @@ func (s *Session) UserGuildMember(guildID string, options ...RequestOption) (st
 }
 
 // UserGuilds returns an array of UserGuild structures for all guilds.
-// limit     : The number guilds that can be returned. (max 100)
-// beforeID  : If provided all guilds returned will be before given ID.
-// afterID   : If provided all guilds returned will be after given ID.
-func (s *Session) UserGuilds(limit int, beforeID, afterID string, options ...RequestOption) (st []*UserGuild, err error) {
+// limit       : The number guilds that can be returned. (max 200)
+// beforeID    : If provided all guilds returned will be before given ID.
+// afterID     : If provided all guilds returned will be after given ID.
+// withCounts  : Whether to include approximate member and presence counts or not.
+func (s *Session) UserGuilds(limit int, beforeID, afterID string, withCounts bool, options ...RequestOption) (st []*UserGuild, err error) {
 
 	v := url.Values{}
 
@@ -440,6 +441,9 @@ func (s *Session) UserGuilds(limit int, beforeID, afterID string, options ...Req
 	if beforeID != "" {
 		v.Set("before", beforeID)
 	}
+	if withCounts {
+		v.Set("with_counts", "true")
+	}
 
 	uri := EndpointUserGuilds("@me")
 

restapi_test.go

@@ -106,7 +106,7 @@ func TestUserGuilds(t *testing.T) {
 		t.Skip("Cannot TestUserGuilds, dg not set.")
 	}
 
-	_, err := dg.UserGuilds(10, "", "")
+	_, err := dg.UserGuilds(10, "", "", false)
 	if err != nil {
 		t.Errorf(err.Error())
 	}

structs.go

@@ -1274,6 +1274,14 @@ type UserGuild struct {
 	Owner       bool           `json:"owner"`
 	Permissions int64          `json:"permissions,string"`
 	Features    []GuildFeature `json:"features"`
+
+	// Approximate number of members in this guild.
+	// NOTE: this field is only filled when withCounts is true.
+	ApproximateMemberCount int `json:"approximate_member_count"`
+
+	// Approximate number of non-offline members in this guild.
+	// NOTE: this field is only filled when withCounts is true.
+	ApproximatePresenceCount int `json:"approximate_presence_count"`
 }
 
 // GuildFeature indicates the presence of a feature in a guild