From 4d2ffde1815360efaac7cb3cd08c108a8c339036 Mon Sep 17 00:00:00 2001
From: asandikci <git@aliberksandikci.com.tr>
Date: Sat, 29 Jul 2023 13:04:25 +0300
Subject: [PATCH] a working godaemon1

---
 .gitignore                  |  3 +-
 go-daemon/go.mod            |  5 +--
 go-daemon/godaemon1.go      | 37 ++++++++++++++++++++++
 go-daemon/godaemon1.service | 17 ++++++++++
 go-daemon/info.go           | 63 +++++++++++++++++++++++++++++++++++++
 go-daemon/install.sh        | 24 ++++++++++++++
 6 files changed, 146 insertions(+), 3 deletions(-)
 create mode 100644 go-daemon/godaemon1.go
 create mode 100644 go-daemon/godaemon1.service
 create mode 100644 go-daemon/info.go
 create mode 100644 go-daemon/install.sh

diff --git a/.gitignore b/.gitignore
index 46343b1..67a015d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -77,4 +77,5 @@ Mkfile.old
 dkms.conf
 
 ### USER MODIFIED ###
-c-daemon/bin/
\ No newline at end of file
+c-daemon/bin/
+go-daemon/bin/
\ No newline at end of file
diff --git a/go-daemon/go.mod b/go-daemon/go.mod
index 11a638f..3530250 100644
--- a/go-daemon/go.mod
+++ b/go-daemon/go.mod
@@ -1,9 +1,10 @@
-module go-daemon
+module godaemon1
 
 go 1.20
 
+require github.com/sevlyar/go-daemon v0.1.6
+
 require (
 	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 // indirect
-	github.com/sevlyar/go-daemon v0.1.6 // indirect
 	golang.org/x/sys v0.10.0 // indirect
 )
diff --git a/go-daemon/godaemon1.go b/go-daemon/godaemon1.go
new file mode 100644
index 0000000..9e8ca87
--- /dev/null
+++ b/go-daemon/godaemon1.go
@@ -0,0 +1,37 @@
+package main
+
+import (
+	// "log"
+	"time"
+	// "github.com/sevlyar/go-daemon"
+)
+
+func main() {
+	// cntxt := &daemon.Context{
+	// PidFileName: "godaemon1.pid",
+	// PidFilePerm: 0644,
+	// LogFileName: "godaemon1.log",
+	// LogFilePerm: 0640,
+	// WorkDir:     "./",
+	// Umask:       027,
+	// Args:        []string{"[go-daemon godaemon1]"},
+	// }
+
+	// d, err := cntxt.Reborn()
+	// if err != nil {
+	// log.Fatal("Unable to run: ", err)
+	// }
+	// if d != nil {
+	// return
+	// }
+	// defer cntxt.Release()
+	//
+	// log.Print("- - - - - - - - - - - - - - -")
+	// log.Print("daemon started")
+
+	for true {
+		Info()
+		time.Sleep(100 * time.Millisecond)
+	}
+
+}
diff --git a/go-daemon/godaemon1.service b/go-daemon/godaemon1.service
new file mode 100644
index 0000000..76cbce8
--- /dev/null
+++ b/go-daemon/godaemon1.service
@@ -0,0 +1,17 @@
+[Unit]
+Description= Go Daemon-1
+After=multi-user.target
+
+[Service]
+Type=simple
+User=root
+Group=root
+ExecStart=/usr/bin/godaemon1
+PIDFile=/run/godaemon1.pid
+
+PrivateTmp=false
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
+Alias=godaemon1.service
\ No newline at end of file
diff --git a/go-daemon/info.go b/go-daemon/info.go
new file mode 100644
index 0000000..21513f1
--- /dev/null
+++ b/go-daemon/info.go
@@ -0,0 +1,63 @@
+package main
+
+import (
+	"log"
+	"os"
+	"runtime"
+	"time"
+)
+
+const ProgramName = "go-daemon"
+
+func checkExists(path string) (bool, error) {
+	_, err := os.Stat(path)
+	if err == nil {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+func Info() {
+	// A SAMPLE COMMAND FOR LOGGING OS INFORMATION TO A DEDICATED FILE
+	// userhome, err := os.UserHomeDir() // TODO $HOME is not defined while running as daemon !!!
+	// if err != nil {
+	// 	log.Fatal(err)
+	// }
+
+	userhome := "/home/asandikci" // TEMPORARY
+	configDir := userhome + "/.config/" + ProgramName + "/"
+	// TODO Will be replaced with a Go Config Library
+
+	if flag, err := checkExists(configDir); flag {
+		// log.Println("Config dir already exists")
+		if err != nil {
+			log.Fatal(err)
+		}
+	} else if err := os.Mkdir(configDir, os.ModePerm); err != nil {
+		log.Fatal(err)
+	}
+
+	osInfo := []struct {
+		str1, str2 string
+	}{
+		{"OS", runtime.GOOS},
+		{"Time", time.Now().Format("2006.01.02 15:04:05")},
+	}
+
+	f, err := os.Create(configDir + "godaemon1.conf")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	defer f.Close()
+
+	for _, info := range osInfo {
+		_, err := f.WriteString(info.str1 + ": " + info.str2 + "\n")
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+}
diff --git a/go-daemon/install.sh b/go-daemon/install.sh
new file mode 100644
index 0000000..58d9429
--- /dev/null
+++ b/go-daemon/install.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+### godaemon1
+# Pre-Cleaning
+sudo rm /usr/bin/godaemon1
+sudo rm -rf /usr/lib/godaemon1/
+
+# Building
+temp_dir="$(mktemp -d)"
+cd $temp_dir
+echo $temp_dir
+git clone https://git.aliberksandikci.com.tr/liderahenk/go-daemon
+cd go-daemon/go-daemon/
+go build -o ./bin/ 
+
+# Installing 
+sudo mv ./bin/godaemon1 /usr/bin/godaemon1
+sudo mv ./godaemon1.service /etc/systemd/system/ 
+sudo systemctl daemon-reload
+sudo systemctl enable godaemon1
+sudo systemctl start godaemon1
+
+# Post-Cleaning
+sudo rm -rf $temp_dir
\ No newline at end of file