Add the /addemotes command

This command launches a goroutine that does the actual downloading of
the emotes so the client doesn't hang until the process is finished.

subscribers.json needs to be manually downloaded and added next to the
main executable for now.  Eventually, it will download and cache this
file (for 24 hours, at a minimum).

Issue #10 should not be considered finished yet.  This needs to be
tested a bit more with multiple channels.  Ideally, some that exist and
some that don't to verify that it fails gracefully (ie, adds the emotes
it was able to download).

.gitignore

@@ -35,3 +35,6 @@ static/main.wasm
 
 # tags for vim
 tags
+
+# channel and emote list from twitch
+subscribers.json

chatcommands.go

@@ -318,6 +318,37 @@ var commands = &CommandControl{
 				return "see console for output"
 			},
 		},
+
+		common.CNAddEmotes.String(): Command{
+			HelpText: "Add emotes from a given twitch channel.",
+			Function: func(cl *Client, args []string) string {
+				// Fire this off in it's own goroutine so the client doesn't
+				// block waiting for the emote download to finish.
+				go func() {
+
+					// Pretty sure this breaks on partial downloads (eg, one good channel and one non-existant)
+					_, err := GetEmotes(args)
+					if err != nil {
+						cl.SendChatData(common.NewChatMessage("", "",
+							err.Error(),
+							common.CmdlUser, common.MsgCommandResponse))
+						return
+					}
+
+					// reload emotes now that new ones were added
+					_, err = common.LoadEmotes()
+					if err != nil {
+						cl.SendChatData(common.NewChatMessage("", "",
+							err.Error(),
+							common.CmdlUser, common.MsgCommandResponse))
+						return
+					}
+
+					cl.belongsTo.AddModNotice(cl.name + " has added emotes from the following channels: " + strings.Join(args, ", "))
+				}()
+				return "Emote download initiated for the following channels: " + strings.Join(args, ", ")
+			},
+		},
 	},
 }
 

common/chatcommands.go

@@ -64,6 +64,7 @@ var ChatCommands = []ChatCommandNames{
 	CNReloadEmotes,
 	CNModpass,
 	CNIP,
+	CNAddEmotes,
 }
 
 func GetFullChatCommand(c string) string {

emotes.go

@@ -17,7 +17,7 @@ type twitchChannel struct {
 	Plans           map[string]string `json:"plans"`
 	Emotes          []struct {
 		Code string `json:"code"`
-		Set  string `json:"emoticon_set"`
+		Set  int    `json:"emoticon_set"`
 		Id   int    `json:"id"`
 	} `json:"emotes"`
 	BaseSetId   string `json:"base_set_id"`