refactor: Add message.Author.ID(), remove a bunch of type assertions

chat/command.go

@@ -111,7 +111,7 @@ func InitCommands(c *Commands) {
 	c.Add(Command{
 		Prefix: "/help",
 		Handler: func(room *Room, msg message.CommandMsg) error {
-			op := room.IsOp(msg.From().(Member))
+			op := room.IsOp(msg.From())
 			room.Send(message.NewSystemMsg(room.commands.Help(op), msg.From()))
 			return nil
 		},
@@ -150,7 +150,7 @@ func InitCommands(c *Commands) {
 			if len(args) != 1 {
 				return ErrMissingArg
 			}
-			member, ok := room.MemberByID(msg.From().(Member).ID())
+			member, ok := room.MemberByID(msg.From().ID())
 			if !ok {
 				return ErrMissingMember
 			}
@@ -253,7 +253,7 @@ func InitCommands(c *Commands) {
 		PrefixHelp: "[USER]",
 		Help:       "Hide messages from USER, /unignore USER to stop hiding.",
 		Handler: func(room *Room, msg message.CommandMsg) error {
-			from, ok := room.Member(msg.From().(Member))
+			from, ok := room.Member(msg.From())
 			if !ok {
 				return ErrMissingMember
 			}
@@ -278,7 +278,7 @@ func InitCommands(c *Commands) {
 				return nil
 			}
 
-			if id == msg.From().(Member).ID() {
+			if id == msg.From().ID() {
 				return errors.New("cannot ignore self")
 			}
 			target, ok := room.MemberByID(id)
@@ -302,7 +302,7 @@ func InitCommands(c *Commands) {
 		Prefix:     "/unignore",
 		PrefixHelp: "USER",
 		Handler: func(room *Room, msg message.CommandMsg) error {
-			from, ok := room.Member(msg.From().(Member))
+			from, ok := room.Member(msg.From())
 			if !ok {
 				return ErrMissingMember
 			}

chat/member.go

@@ -16,7 +16,6 @@ type roomMember struct {
 type Member interface {
 	message.Author
 
-	ID() string
 	SetName(string)
 
 	Config() message.UserConfig

chat/message/message.go

@@ -7,6 +7,7 @@ import (
 )
 
 type Author interface {
+	ID() string
 	Name() string
 	Color() int
 }

chat/message/screen.go

@@ -39,7 +39,7 @@ func HandledScreen(name string, handler func(Message) error) *handledScreen {
 
 func Screen(name string) *baseScreen {
 	return &baseScreen{
-		User: NewUser(name),
+		user: NewUser(name),
 	}
 }
 
@@ -71,7 +71,7 @@ func (u *pipedScreen) Send(m Message) error {
 // User container that knows about writing to an IO screen.
 type baseScreen struct {
 	sync.Mutex
-	*User
+	*user
 }
 
 func (u *baseScreen) Config() UserConfig {

chat/message/user.go

@@ -8,7 +8,7 @@ import (
 const reHighlight = `\b(%s)\b`
 
 // User definition, implemented set Item interface and io.Writer
-type User struct {
+type user struct {
 	joined time.Time
 
 	name    string
@@ -16,8 +16,8 @@ type User struct {
 	replyTo Author // Set when user gets a /msg, for replying.
 }
 
-func NewUser(name string) *User {
+func NewUser(name string) *user {
-	u := User{
+	u := user{
 		name:   name,
 		config: DefaultUserConfig,
 		joined: time.Now(),
@@ -27,18 +27,18 @@ func NewUser(name string) *User {
 	return &u
 }
 
-func (u *User) Name() string {
+func (u *user) Name() string {
 	return u.name
 }
 
-func (u *User) Color() int {
+func (u *user) Color() int {
 	return u.config.Seed
 }
 
-func (u *User) ID() string {
+func (u *user) ID() string {
 	return SanitizeName(u.name)
 }
 
-func (u *User) Joined() time.Time {
+func (u *user) Joined() time.Time {
 	return u.joined
 }

chat/room.go

@@ -92,7 +92,7 @@ func (r *Room) HandleMsg(m message.Message) {
 			roomMember := item.Value().(*roomMember)
 			user := roomMember.Member
 
-			if fromMsg != nil && fromMsg.From() != nil && roomMember.Ignored.In(fromMsg.From().(Member).ID()) {
+			if fromMsg != nil && fromMsg.From() != nil && roomMember.Ignored.In(fromMsg.From().ID()) {
 				// Skip because ignored
 				return
 			}
@@ -182,7 +182,7 @@ func (r *Room) Rename(oldID string, u Member) error {
 
 // Member returns a corresponding Member object to a User if the Member is
 // present in this room.
-func (r *Room) Member(u Member) (*roomMember, bool) {
+func (r *Room) Member(u message.Author) (*roomMember, bool) {
 	m, ok := r.MemberByID(u.ID())
 	if !ok {
 		return nil, false
@@ -204,7 +204,7 @@ func (r *Room) MemberByID(id string) (*roomMember, bool) {
 }
 
 // IsOp returns whether a user is an operator in this room.
-func (r *Room) IsOp(u Member) bool {
+func (r *Room) IsOp(u message.Author) bool {
 	return r.Ops.In(u.ID())
 }
 

host.go

@@ -353,7 +353,7 @@ func (h *Host) InitCommands(c *chat.Commands) {
 			}
 
 			var whois string
-			switch room.IsOp(msg.From().(chat.Member)) {
+			switch room.IsOp(msg.From()) {
 			case true:
 				whois = whoisAdmin(target)
 			case false:
@@ -389,7 +389,7 @@ func (h *Host) InitCommands(c *chat.Commands) {
 		PrefixHelp: "USER [DURATION]",
 		Help:       "Set USER as admin.",
 		Handler: func(room *chat.Room, msg message.CommandMsg) error {
-			if !room.IsOp(msg.From().(chat.Member)) {
+			if !room.IsOp(msg.From()) {
 				return errors.New("must be op")
 			}
 
@@ -435,7 +435,7 @@ func (h *Host) InitCommands(c *chat.Commands) {
 		Help:       "Ban USER from the server.",
 		Handler: func(room *chat.Room, msg message.CommandMsg) error {
 			// TODO: Would be nice to specify what to ban. Key? Ip? etc.
-			if !room.IsOp(msg.From().(chat.Member)) {
+			if !room.IsOp(msg.From()) {
 				return errors.New("must be op")
 			}
 
@@ -475,7 +475,7 @@ func (h *Host) InitCommands(c *chat.Commands) {
 		PrefixHelp: "USER",
 		Help:       "Kick USER from the server.",
 		Handler: func(room *chat.Room, msg message.CommandMsg) error {
-			if !room.IsOp(msg.From().(chat.Member)) {
+			if !room.IsOp(msg.From()) {
 				return errors.New("must be op")
 			}
 
@@ -513,7 +513,7 @@ func (h *Host) InitCommands(c *chat.Commands) {
 				room.Send(message.NewSystemMsg(motd, user))
 				return nil
 			}
-			if !room.IsOp(user.(chat.Member)) {
+			if !room.IsOp(user) {
 				return errors.New("must be OP to modify the MOTD")
 			}