From 9a132559c44f025c0a73915b3fe418751294089b Mon Sep 17 00:00:00 2001
From: Runxi Yu <me@runxiyu.org>
Date: Sat, 22 Mar 2025 02:31:41 +0800
Subject: Add rudimentary IRC logic

---
 config.go |  5 +++++
 go.mod    |  1 +
 go.sum    |  2 ++
 irc.go    | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 main.go   |  3 +++
 5 files changed, 57 insertions(+)
 create mode 100644 irc.go

diff --git a/config.go b/config.go
index 8cd76c9..9a5647f 100644
--- a/config.go
+++ b/config.go
@@ -35,6 +35,11 @@ var config struct {
 		Key  string `scfg:"key"`
 		Root string `scfg:"root"`
 	} `scfg:"ssh"`
+	IRC struct {
+		Net  string `scfg:"net"`
+		Addr string `scfg:"addr"`
+		TLS  bool   `scfg:"tls"`
+	} `scfg:"irc"`
 	General struct {
 		Title string `scfg:"title"`
 	} `scfg:"general"`
diff --git a/go.mod b/go.mod
index 0907202..d9bbb9c 100644
--- a/go.mod
+++ b/go.mod
@@ -14,6 +14,7 @@ require (
 	github.com/tdewolff/minify/v2 v2.22.3
 	github.com/yuin/goldmark v1.7.8
 	go.lindenii.runxiyu.org/lindenii-common v0.0.0-20250321131425-dda3538a9cd4
+	go.lindenii.runxiyu.org/lindenii-irc v0.0.0-20250321180239-62045c958b0d
 	golang.org/x/crypto v0.36.0
 )
 
diff --git a/go.sum b/go.sum
index 0fef5af..839685e 100644
--- a/go.sum
+++ b/go.sum
@@ -110,6 +110,8 @@ github.com/yuin/goldmark v1.7.8 h1:iERMLn0/QJeHFhxSt3p6PeN9mGnvIKSpG9YYorDMnic=
 github.com/yuin/goldmark v1.7.8/go.mod h1:uzxRWxtg69N339t3louHJ7+O03ezfj6PlliRlaOzY1E=
 go.lindenii.runxiyu.org/lindenii-common v0.0.0-20250321131425-dda3538a9cd4 h1:xX6s8+Yo5fRHzVswlJvKQjjN6lZCG7lAh33dTXBqsYE=
 go.lindenii.runxiyu.org/lindenii-common v0.0.0-20250321131425-dda3538a9cd4/go.mod h1:bOxuuGXA3UpbLb1lKohr2j2MVcGGLcqfAprGx9VCkMA=
+go.lindenii.runxiyu.org/lindenii-irc v0.0.0-20250321180239-62045c958b0d h1:ET8nGNEI6IGHAKyB7zSsI1xX3x9uyolUFqA/BP3fb3Y=
+go.lindenii.runxiyu.org/lindenii-irc v0.0.0-20250321180239-62045c958b0d/go.mod h1:fE6Ks8GK7PHZGAPkTWG593UmF7FmyugcRcqmey3Nvy0=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
diff --git a/irc.go b/irc.go
new file mode 100644
index 0000000..fc9e0af
--- /dev/null
+++ b/irc.go
@@ -0,0 +1,46 @@
+package main
+
+import (
+	"crypto/tls"
+	"net"
+
+	"go.lindenii.runxiyu.org/lindenii-irc"
+)
+
+func ircBotSession() error {
+	var err error
+	var underlyingConn net.Conn
+	if config.IRC.TLS {
+		underlyingConn, err = tls.Dial(config.IRC.Net, config.IRC.Addr, nil)
+	} else {
+		underlyingConn, err = net.Dial(config.IRC.Net, config.IRC.Addr)
+	}
+	if err != nil {
+		return (err)
+	}
+	conn := irc.NewConn(underlyingConn)
+	conn.WriteString("NICK forge\r\nUSER forge 0 * :Forge\r\n")
+	for {
+		msg, err := conn.ReadMessage()
+		if err != nil {
+			return (err)
+		}
+		switch msg.Command {
+		case "001":
+			conn.WriteString("JOIN #chat\r\n")
+		case "PING":
+			conn.WriteString("PONG :")
+			conn.WriteString(msg.Args[0])
+			conn.WriteString("\r\n")
+		case "JOIN":
+			conn.WriteString("PRIVMSG #chat :test\r\n")
+		default:
+		}
+	}
+}
+
+func ircBotLoop() {
+	for {
+		_ = ircBotSession()
+	}
+}
diff --git a/main.go b/main.go
index d92d816..d2b1069 100644
--- a/main.go
+++ b/main.go
@@ -93,5 +93,8 @@ func main() {
 		}
 	}()
 
+	// IRC bot
+	go ircBotLoop()
+
 	select {}
 }
-- 
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