add interaction and slash commands api

Author: jonas747

endpoints.go

@@ -148,5 +148,42 @@ var (
 	EndpointOauth2          = EndpointAPI + "oauth2/"
 	EndpointApplications    = EndpointOauth2 + "applications"
 	EndpointApplication     = func(aID int64) string { return EndpointApplications + "/" + StrID(aID) }
+	EndpointApplicationMe   = EndpointApplications + "/@me"
 	EndpointApplicationsBot = func(aID int64) string { return EndpointApplications + "/" + StrID(aID) + "/bot" }
+
+	EndpointApplicationNonOauth2 = func(aID int64) string { return EndpointAPI + "applications/" + StrID(aID) }
+	EndpointApplicationCommands  = func(aID int64) string { return EndpointApplicationNonOauth2(aID) + "/commands" }
+	EndpointApplicationCommand   = func(aID int64, cmdID int64) string {
+		return EndpointApplicationNonOauth2(aID) + "/commands/" + StrID(cmdID)
+	}
+
+	EndpointApplicationGuildCommands = func(aID int64, gID int64) string {
+		return EndpointApplicationNonOauth2(aID) + "/guilds/" + StrID(gID) + "/commands"
+	}
+
+	EndpointApplicationGuildCommand = func(aID int64, gID int64, cmdID int64) string {
+		return EndpointApplicationGuildCommands(aID, gID) + "/" + StrID(cmdID)
+	}
+
+	EndpointApplicationGuildCommandsPermissions = func(aID int64, gID int64) string {
+		return EndpointApplicationGuildCommands(aID, gID) + "/permissions"
+	}
+
+	EndpointApplicationGuildCommandPermissions = func(aID int64, gID int64, cmdID int64) string {
+		return EndpointApplicationGuildCommand(aID, gID, cmdID) + "/permissions"
+	}
+
+	EndpointInteractions        = EndpointAPI + "interactions"
+	EndpointInteractionCallback = func(interactionID int64, token string) string {
+		return EndpointInteractions + "/" + StrID(interactionID) + "/" + token + "/callback"
+	}
+	EndpointWebhookInteraction = func(applicationID int64, token string) string {
+		return EndpointWebhooks + "/" + StrID(applicationID) + "/" + token
+	}
+	EndpointInteractionOriginalMessage = func(applicationID int64, token string) string {
+		return EndpointWebhookInteraction(applicationID, token) + "/messages/@original"
+	}
+	EndpointInteractionFollowupMessage = func(applicationID int64, token string, messageID int64) string {
+		return EndpointWebhookInteraction(applicationID, token) + "/messages/" + StrID(messageID)
+	}
 )

eventhandlers.go

@@ -425,3 +425,7 @@ type InviteDelete struct {
 	ChannelID int64  `json:"channel_id,string"`
 	Code      string `json:"code"`
 }
+
+type InteractionCreate struct {
+	*Interaction
+}

events.go

@@ -15,7 +15,7 @@ package discordgo
 
 // An Application struct stores values for a Discord OAuth2 Application
 type Application struct {
-	ID                  int64     `json:"id,omitempty"`
+	ID                  int64     `json:"id,string,omitempty"`
 	Name                string    `json:"name"`
 	Description         string    `json:"description,omitempty"`
 	Icon                string    `json:"icon,omitempty"`
@@ -42,6 +42,18 @@ func (s *Session) Application(appID int64) (st *Application, err error) {
 	return
 }
 
+// Application returns an Application structure of the current bot
+func (s *Session) ApplicationMe() (st *Application, err error) {
+
+	body, err := s.RequestWithBucketID("GET", EndpointApplicationMe, nil, EndpointApplicationMe)
+	if err != nil {
+		return
+	}
+
+	err = unmarshal(body, &st)
+	return
+}
+
 // Applications returns all applications for the authenticated user
 func (s *Session) Applications() (st []*Application, err error) {