@@ -1,2 +0,0 @@
-APP_ID=
-AUTH_TOKEN=

@@ -1,1 +1,3 @@
+__debug_bin*
 .env
+config.json

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2024 BiRabittoh
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"strings"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+var (
+	handlersMap   map[string]BotCommand
+	shortCommands = map[string]string{}
+)
+
+func InitHandlers() {
+	handlersMap = map[string]BotCommand{
+		"echo":   {ShortCode: "e", Handler: handleEcho, Help: "echoes a message"},
+		"prefix": {ShortCode: "pre", Handler: handlePrefix, Help: "sets the bot's prefix"},
+		"help":   {ShortCode: "h", Handler: handleHelp, Help: "shows this help message"},
+	}
+
+	for command, botCommand := range handlersMap {
+		if botCommand.ShortCode == "" {
+			continue
+		}
+		shortCommands[botCommand.ShortCode] = command
+	}
+}
+
+func handleHelp(args []string, s *discordgo.Session, m *discordgo.MessageCreate) string {
+	helpText := "**Bot commands:**\n"
+	for command, botCommand := range handlersMap {
+		helpText += "* " + botCommand.FormatHelp(command) + "\n"
+	}
+	return helpText
+}
+
+func handleEcho(args []string, s *discordgo.Session, m *discordgo.MessageCreate) string {
+	return strings.Join(args, " ")
+}
+
+func handlePrefix(args []string, s *discordgo.Session, m *discordgo.MessageCreate) string {
+	if len(args) == 0 {
+		return "Usage: prefix <new prefix>"
+	}
+
+	newPrefix := args[0]
+	if len(newPrefix) > 10 {
+		return "Prefix is too long"
+	}
+
+	config.Values.Prefix = newPrefix
+	err := config.Save()
+	if err != nil {
+		logger.Errorf("could not save config: %s", err)
+	}
+
+	return "Prefix set to " + newPrefix
+}

@@ -0,0 +1,13 @@
+{
+    "applicationId": "your-application-id-here",
+    "token": "your-token-here",
+    "prefix": "$",
+    "magazineSize": 3,
+    "outros":
+    [
+        { "name": "TheFatRat - Xenogenesis", "value": "https://www.youtube.com/watch?v=6N8zvi1VNSc" },
+        { "name": "OMFG - Hello", "value": "https://www.youtube.com/watch?v=5nYVNTX0Ib8" },
+        { "name": "Pegboard Nerds - Disconnected", "value": "https://www.youtube.com/watch?v=YdBtx8qG68w" },
+        { "name": "Gym Class Heroes - Stereo Hearts", "value": "https://www.youtube.com/watch?v=ThctmvQ3NGk" }
+    ]
+}

@@ -1,17 +0,0 @@
-package main
-
-import (
-	"os"
-
-	"github.com/BiRabittoh/disgord/mylog"
-	"github.com/kkdai/youtube/v2"
-)
-
-var (
-	discordToken string
-	appID        string
-	prefix       string = "$"
-
-	logger = mylog.NewLogger(os.Stdout, "main", mylog.DEBUG)
-	yt     = youtube.Client{}
-)

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/BiRabittoh/disgord/myconfig"
+	"github.com/BiRabittoh/disgord/mylog"
+	"github.com/bwmarrin/discordgo"
+	"github.com/kkdai/youtube/v2"
+)
+
+const (
+	helpFmt = "%s - _%s_"
+)
+
+type KeyValue struct {
+	Key   string `json:"key"`
+	Value string `json:"value"`
+}
+
+type Config struct {
+	ApplicationID string `json:"applicationId"`
+	Token         string `json:"token"`
+
+	Prefix string `json:"prefix"`
+
+	Outros []KeyValue `json:"outros"`
+	Radios []KeyValue `json:"radios"`
+
+	MagazineSize uint `json:"magazineSize"`
+}
+
+type BotCommand struct {
+	Handler   func([]string, *discordgo.Session, *discordgo.MessageCreate) string
+	ShortCode string
+	Help      string
+}
+
+func formatCommand(command string) string {
+	return fmt.Sprintf("`%s%s`", config.Values.Prefix, command)
+}
+
+func (bc BotCommand) FormatHelp(command string) string {
+	var shortCodeStr string
+	if bc.ShortCode != "" {
+		shortCodeStr = fmt.Sprintf(" (%s)", formatCommand(bc.ShortCode))
+	}
+	return fmt.Sprintf(helpFmt, formatCommand(command)+shortCodeStr, bc.Help)
+}
+
+var (
+	discordToken string
+	appID        string
+	config       *myconfig.Config[Config]
+
+	logger = mylog.NewLogger(os.Stdout, "main", mylog.DEBUG)
+	yt     = youtube.Client{}
+)

@@ -5,40 +5,59 @@ "os"
 	"os/signal"
 	"strings"
 
+	"github.com/BiRabittoh/disgord/myconfig"
 	"github.com/bwmarrin/discordgo"
-	"github.com/joho/godotenv"
 )
 
 func parseUserMessage(messageContent string) (command string, args []string, ok bool) {
-	after, found := strings.CutPrefix(messageContent, prefix)
+	after, found := strings.CutPrefix(messageContent, config.Values.Prefix)
 	if !found {
 		return
 	}
 
 	userInput := strings.Split(after, " ")
-	if len(userInput) == 0 {
+	command = strings.ToLower(userInput[0])
+	return command, userInput[1:], len(command) > 0
+}
+
+func handleCommand(s *discordgo.Session, m *discordgo.MessageCreate) (response string, ok bool, err error) {
+	command, args, ok := parseUserMessage(m.Content)
+	if !ok {
 		return
 	}
 
-	return userInput[0], userInput[1:], true
+	longCommand, short := shortCommands[command]
+	if short {
+		command = longCommand
+	}
+
+	botCommand, found := handlersMap[command]
+	if !found {
+		response = "unknown command: " + command
+		return
+	}
+
+	response = botCommand.Handler(args, s, m)
+	return
 }
 
 func messageHandler(s *discordgo.Session, m *discordgo.MessageCreate) {
 	logger.Debug("got a message: " + m.Content)
-	command, args, ok := parseUserMessage(m.Content)
+
+	response, ok, err := handleCommand(s, m)
+	if err != nil {
+		logger.Errorf("could not handle command: %s", err)
+		return
+	}
 	if !ok {
 		return
 	}
-
-	var response string
-	switch command {
-	case "e", "echo":
-		response = strings.Join(args, " ")
-	default:
-		response = "unknown command: " + command
+	if response == "" {
+		logger.Debug("got empty response")
+		return
 	}
 
-	_, err := s.ChannelMessageSend(m.ChannelID, response)
+	_, err = s.ChannelMessageSend(m.ChannelID, response)
 	if err != nil {
 		logger.Errorf("could not send message: %s", err)
 	}
@@ -49,25 +68,18 @@ logger.Infof("Logged in as %s", r.User.String())
 }
 
 func main() {
-	err := godotenv.Load()
+	var err error
+	config, err = myconfig.New[Config]("config.json")
 	if err != nil {
-		logger.Errorf("Error loading .env file: %s", err)
-	}
-
-	appID = os.Getenv("APP_ID")
-	if appID == "" {
-		logger.Fatal("Could not find Discord App ID.")
-	}
-
-	discordToken = os.Getenv("AUTH_TOKEN")
-	if discordToken == "" {
-		logger.Fatal("Could not find Discord bot token.")
+		logger.Errorf("could not load config: %s", err)
 	}
 
-	session, err := discordgo.New("Bot " + discordToken)
+	session, err := discordgo.New("Bot " + config.Values.Token)
 	if err != nil {
 		logger.Fatalf("could not create bot session: %s", err)
 	}
+
+	InitHandlers()
 
 	session.AddHandler(messageHandler)
 	session.AddHandler(readyHandler)

@@ -0,0 +1,34 @@
+package myconfig
+
+import (
+	"encoding/json"
+	"os"
+)
+
+type Config[T any] struct {
+	filename string
+	Values   T
+}
+
+func New[T any](filename string) (c *Config[T], err error) {
+	fileContent, err := os.ReadFile(filename)
+	if err != nil {
+		return
+	}
+
+	c = &Config[T]{
+		filename: filename,
+	}
+
+	err = json.Unmarshal(fileContent, &c.Values)
+	return
+}
+
+func (c *Config[T]) Save() error {
+	fileContent, err := json.MarshalIndent(c.Values, "", "    ")
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(c.filename, fileContent, 0644)
+}