First version working.

.gitignore

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+# ---> Vim
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
+
+backup
+*.exe
+*.dll
+*.world
+coverage
+coverage/*
+.venv
+*.gz
+config.toml
+public
+*.idx
+*.sqlite3
+*.log
+secret.json
+

Makefile

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+
+
+
+build:
+	go build .
+
+run: build
+	./app

commands.json

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+{
+  "keyboard": "I use https://hhkeyboard.us/hhkb/pro-classic-type-s but I don't recommend it.",
+  "mic": "It's a Samson se50x https://samsontech.com/products/microphones/headworn-microphones/se50x/",
+  "site": "https://learncodethehardway.com/",
+  "help": "Available commands: !mic !keyboard !site."
+}

config.json

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+{
+  "ClientNick": "zedashaw",
+  "Channel": "ZedAShaw",
+  "Commands": {
+    "keyboard": "I use https://hhkeyboard.us/hhkb/pro-classic-type-s but I don't recommend it.",
+    "mic": "It's a Samson se50x https://samsontech.com/products/microphones/headworn-microphones/se50x/",
+    "site": "https://learncodethehardway.com/",
+    "help": "COMMANDS: !mic !keyboard !site !ai !lsp !linux !windows !neovim !gvim !vim",
+    "ai": "I don't use AI, or really anything, but I don't hate AI.",
+    "lsp": "I use only a Terminal and Vim, no LSP, AI, or many other tools.",
+    "linux": "I do use Linux, and I might have to totally switch if Microsoft forces Windows 11 on me.",
+    "windows":  "I use Windows because 95% of the world uses Windows and I want to teach them to code.",
+    "neovim": "NeoVIM is trying too hard to be like VSCode instead of being a better Vim.",
+    "gvim": "I use gvim because it works on all my computers and I'm not a troglodyte who runs...vim in a terminal? Blech.",
+    "vim": "I'll get my vim config on my git repo in a bit.",
+    "instagram": "My paintings are at https://www.instagram.com/zed.a.shaw"
+  },
+  "Periodic": [
+    {
+      "Seconds": 1800,
+      "Message": "You can use !help to get help from my Twitch IRC bot."
+    },
+    {
+      "Seconds": 3300,
+      "Message": "I run 3 minute ads once an hour. Take a break during that time."
+    }
+  ]
+}

go.mod

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+module MY/app
+
+go 1.25.3
+
+require github.com/gempir/go-twitch-irc/v4 v4.4.1

go.sum

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+github.com/gempir/go-twitch-irc/v4 v4.4.1 h1:R1WxeDyOiwHpt6rn96yZcXTS+Bri30n7pNvIjTMH598=
+github.com/gempir/go-twitch-irc/v4 v4.4.1/go.mod h1:QsOMMAk470uxQ7EYD9GJBGAVqM/jDrXBNbuePfTauzg=

main.go

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+package main
+
+import (
+  "log"
+  "os"
+  "strings"
+  "encoding/json"
+  "time"
+
+  "github.com/gempir/go-twitch-irc/v4"
+)
+
+type Secret struct {
+  ClientSecret string
+  RefreshToken string
+}
+
+type Periodic struct {
+  Seconds int
+  Message string
+}
+
+type Config struct {
+  ClientNick string
+  Channel string
+  Commands map[string]string
+  Periodic []Periodic
+}
+
+func LoadJSON[T any](file string) T {
+  data, err := os.ReadFile(file)
+  if err != nil { log.Fatal(err) }
+
+  var config T
+  err = json.Unmarshal(data, &config)
+  if err != nil { log.Fatal(err) }
+
+  return config
+}
+
+func RunPeriodic(message Periodic, channel string, client *twitch.Client) {
+  for {
+    time.Sleep(time.Duration(message.Seconds) * time.Second)
+    client.Say(channel, message.Message)
+  }
+}
+
+func main() {
+  SECRETS := LoadJSON[Secret]("secret.json")
+  CONFIG := LoadJSON[Config]("config.json")
+
+  // or client := twitch.NewAnonymousClient() for an anonymous user (no write capabilities)
+  client := twitch.NewClient(CONFIG.ClientNick, SECRETS.ClientSecret)
+
+  client.OnPrivateMessage(func(message twitch.PrivateMessage) {
+    cmd, found := strings.CutPrefix(message.Message, "!")
+    reply, valid_cmd := CONFIG.Commands[strings.ToLower(cmd)]
+
+    if found {
+      if valid_cmd {
+        client.Reply(message.Channel, message.ID, reply)
+      } else if !valid_cmd {
+        client.Reply(message.Channel, message.ID, "Invalid command. Use !help to see what's available.")
+      }
+    }
+  })
+
+  client.OnSelfJoinMessage(func (message twitch.UserJoinMessage) {
+    log.Println("Join", message.Channel, "as", message.User, "successful")
+  })
+
+  client.OnConnect(func () {
+    log.Println("Connected. Joining", CONFIG.Channel)
+    client.Join(CONFIG.Channel)
+  })
+
+  client.OnPingMessage(func (message twitch.PingMessage) {
+    log.Println("PING!", message.Message)
+  })
+
+  client.OnPongMessage(func (message twitch.PongMessage) {
+    log.Println("PONG!", message.Message)
+  })
+
+  client.OnNoticeMessage(func (message twitch.NoticeMessage) {
+    log.Println("NOTICE", message.Channel, message.Message)
+  })
+
+  for _, perodic := range(CONFIG.Periodic) {
+    go RunPeriodic(perodic, CONFIG.Channel, client)
+  }
+
+  log.Println("Connecting to Twitch...")
+  err := client.Connect()
+  if err != nil { log.Fatal(err) }
+}

secret_sample.json

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+{
+  "ClientSecret": "oauth:MUST_HAVE_oauth_IN_FRONT",
+  "RefreshToken": "GET THIS FROM twitch-cli"
+}