Restructure layout

Add configuration file
Add redis connection

config.gcfg

@@ -0,0 +1,9 @@
+[nethacklauncher]
+  loglevel            = "debug"
+  recordlocation      = "record"
+  reclistlocation     = "reclist"
+  bootstrapdelay      = 1
+
+[redis]
+  host                = "localhost:6379"
+  password            = ""

nethack-launcher.go

@@ -1,103 +1,116 @@
 package main
 
 import (
-	"flag"
+	"bufio"
 	"fmt"
 	"io/ioutil"
 	"net/http"
 	"os"
 	"os/exec"
+	"time"
 
 	"github.com/unixvoid/glogger"
+	"gopkg.in/gcfg.v1"
+	"gopkg.in/redis.v5"
 )
 
+type Config struct {
+	NethackLauncher struct {
+		Loglevel        string
+		RecordLocation  string
+		ReclistLocation string
+		BootstrapDelay  time.Duration
+	}
+
+	Redis struct {
+		Host     string
+		Password string
+	}
+}
+
 var (
-	loglevel        string
-	recordlocation  string
-	reclistlocation string
-	port            = 8080
+	config = Config{}
 )
 
 func main() {
-	// init runtime args
-	flag.StringVar(&loglevel, "loglevel", "debug", loglevel)
-	flag.StringVar(&recordlocation, "recordlocation", "record", recordlocation)
-	flag.StringVar(&reclistlocation, "reclistlocation", "reclist", reclistlocation)
-	flag.Parse()
-
+	// read conf file
+	readConf()
 	// init config file and logger
-	initLogger(loglevel)
-
-	//// // make sure record file exists
-	//// if _, err := os.Stat(recordlocation); os.IsNotExist(err) {
-	//// 	glogger.Info.Printf("record file not found in %s\n", recordlocation)
-	//// 	fmt.Printf("%s\n", err)
-	//// 	os.Exit(1)
-	//// }
-	//// // make sure reclist bin exists
-	//// if _, err := os.Stat(reclistlocation); os.IsNotExist(err) {
-	//// 	glogger.Info.Printf("reclist binary not found in %s\n", reclistlocation)
-	//// 	fmt.Printf("%s\n", err)
-	//// 	os.Exit(1)
-	//// }
-
-	clearScreen()
-	printWelcomeScreen()
+	initLogger()
+	// init redis connection
+	redisClient, redisErr := initRedisConnection()
+	if redisErr != nil {
+		glogger.Debug.Printf("redis connection cannot be made, trying again in %s second(s)\n", config.NethackLauncher.BootstrapDelay*time.Second)
+		time.Sleep(config.NethackLauncher.BootstrapDelay * time.Second)
+		redisClient, redisErr = initRedisConnection()
+		if redisErr != nil {
+			glogger.Error.Println("redis connection cannot be made, exiting.")
+			panic(redisErr)
+		}
+	} else {
+		glogger.Debug.Println("connection to redis succeeded.")
+	}
 
-	// disable input buffering
-	exec.Command("stty", "-F", "/dev/tty", "cbreak", "min", "1").Run()
-	// do not display entered characters on the screen
-	exec.Command("stty", "-F", "/dev/tty", "-echo").Run()
+	screenFunction := printWelcomeScreen(redisClient)
+	fmt.Printf("screen %s recieved\n", screenFunction)
+}
 
-	var b []byte = make([]byte, 1)
-	for {
-		os.Stdin.Read(b)
-		//fmt.Println("I got the byte", b, "("+string(b)+")")
-		switch string(b) {
-		case "q":
-			clearScreen()
-			os.Exit(0)
-		default:
-			//fmt.Printf("command '%s' not implimented\n", string(b))
-			//fmt.Printf(">> ")
-		}
+func readConf() {
+	// init config file
+	err := gcfg.ReadFileInto(&config, "config.gcfg")
+	if err != nil {
+		panic(fmt.Sprintf("Could not load config.gcfg, error: %s\n", err))
 	}
-	//scanner := bufio.NewScanner(os.Stdin)
-	//for scanner.Scan() {
-	//	//fmt.Println(scanner.Text())
-	//	switch scanner.Text() {
-	//	case "q":
-	//		os.Exit(0)
-	//	default:
-	//		fmt.Printf("command '%s' not implimented\n", scanner.Text())
-	//		fmt.Printf(">> ")
-	//	}
-	//}
-	//if err := scanner.Err(); err != nil {
-	//	log.Println(err)
-	//}
 }
 
-func initLogger(loglevel string) {
+func initLogger() {
 	// init logger
-	if loglevel == "debug" {
+	if config.NethackLauncher.Loglevel == "debug" {
 		glogger.LogInit(os.Stdout, os.Stdout, os.Stdout, os.Stderr)
-	} else if loglevel == "cluster" {
+	} else if config.NethackLauncher.Loglevel == "cluster" {
 		glogger.LogInit(os.Stdout, os.Stdout, ioutil.Discard, os.Stderr)
-	} else if loglevel == "info" {
+	} else if config.NethackLauncher.Loglevel == "info" {
 		glogger.LogInit(os.Stdout, ioutil.Discard, ioutil.Discard, os.Stderr)
 	} else {
 		glogger.LogInit(ioutil.Discard, ioutil.Discard, ioutil.Discard, os.Stderr)
 	}
 }
 
+func initRedisConnection() (*redis.Client, error) {
+	// init redis connection
+	redisClient := redis.NewClient(&redis.Options{
+		Addr:     config.Redis.Host,
+		Password: config.Redis.Password,
+		DB:       0,
+	})
+
+	_, redisErr := redisClient.Ping().Result()
+	return redisClient, redisErr
+}
+
+func checkFiles() {
+	// make sure record file exists
+	if _, err := os.Stat(config.NethackLauncher.RecordLocation); os.IsNotExist(err) {
+		glogger.Info.Printf("record file not found in %s\n", config.NethackLauncher.RecordLocation)
+		fmt.Printf("%s\n", err)
+		os.Exit(1)
+	}
+	// make sure reclist bin exists
+	if _, err := os.Stat(config.NethackLauncher.ReclistLocation); os.IsNotExist(err) {
+		glogger.Info.Printf("reclist binary not found in %s\n", config.NethackLauncher.ReclistLocation)
+		fmt.Printf("%s\n", err)
+		os.Exit(1)
+	}
+}
+
 func clearScreen() {
 	cmd := exec.Command("clear")
 	cmd.Stdout = os.Stdout
 	cmd.Run()
 }
 
-func printWelcomeScreen() {
+func printWelcomeScreen(redisClient *redis.Client) string {
+	clearScreen()
 	println("unixvoid.com underground nethack server")
 	println("")
 	println(" Not logged in.")
@@ -108,13 +121,61 @@ func printWelcomeScreen() {
 	println(" q) Quit")
 	println("")
 	fmt.Printf(">> ")
+
+	// disable input buffering
+	exec.Command("stty", "-F", "/dev/tty", "cbreak", "min", "1").Run()
+	// do not display entered characters on the screen
+	exec.Command("stty", "-F", "/dev/tty", "-echo").Run()
+
+	var b []byte = make([]byte, 1)
+	for {
+		os.Stdin.Read(b)
+		switch string(b) {
+		case "l":
+			// restart display
+			exec.Command("stty", "-F", "/dev/tty", "echo").Run()
+			clearScreen()
+			printLoginScreen(redisClient)
+		case "r":
+			clearScreen()
+			return ("r")
+		case "w":
+			clearScreen()
+			return ("w")
+		case "q":
+			clearScreen()
+			os.Exit(0)
+		default:
+		}
+	}
+}
+
+func printLoginScreen(redisClient *redis.Client) {
+	println("unixvoid.com underground nethack server")
+	println("")
+	println(" Please enter your username. (blank entry aborts)")
+	println("")
+	fmt.Printf(">> ")
+
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		if scanner.Text() == "" {
+			printWelcomeScreen(redisClient)
+		}
+
+		fmt.Printf("you entered '%s'\n", scanner.Text())
+		// check redis for user
+	}
+	if err := scanner.Err(); err != nil {
+		fmt.Printf("%s\n", err)
+	}
 }
 
 func gethighscore(w http.ResponseWriter, r *http.Request) {
 	// run script
-	output, err := exec.Command(reclistlocation,
+	output, err := exec.Command(config.NethackLauncher.ReclistLocation,
 		"-f",
-		recordlocation).CombinedOutput()
+		config.NethackLauncher.RecordLocation).CombinedOutput()
 	if err != nil {
 		fmt.Printf("%s\n", err)
 	}