Add zap logger, migrate some constants up a level

wings.go

@@ -1,15 +1,67 @@
 package main
 
 import (
-	"fmt"
-	"os"
-
-	"github.com/pterodactyl/wings/command"
+    "flag"
+    "fmt"
+    "go.uber.org/zap"
 )
 
+var (
+    configPath string
+    debug      bool
+)
+
+// Entrypoint for the Wings application. Configures the logger and checks any
+// flags that were passed through in the boot arguments.
 func main() {
-	if err := command.RootCommand.Execute(); err != nil {
-		fmt.Println(err)
-		os.Exit(1)
-	}
+    flag.StringVar(&configPath, "config", "config.yml", "set the location for the configuration file")
+    flag.BoolVar(&debug, "debug", false, "pass in order to run wings in debug mode")
+
+    flag.Parse()
+
+    printLogo()
+    if err := configureLogging(); err != nil {
+        panic(err)
+    }
+
+    if debug {
+        zap.S().Debugw("running in debug mode")
+    }
+
+    zap.S().Infof("using configuration file: %s", configPath)
+}
+
+// Configures the global logger for Zap so that we can call it from any location
+// in the code without having to pass around a logger instance.
+func configureLogging() error {
+    cfg := zap.NewProductionConfig()
+    if debug {
+        cfg = zap.NewDevelopmentConfig()
+    }
+
+    cfg.Encoding = "console"
+    cfg.OutputPaths = []string{
+        "stdout",
+    }
+
+    logger, err := cfg.Build()
+    if err != nil {
+        return err
+    }
+
+    zap.ReplaceGlobals(logger)
+
+    return nil
+}
+
+// Prints the wings logo, nothing special here!
+func printLogo() {
+    fmt.Println()
+    fmt.Println(`                     ____`)
+    fmt.Println(`__ Pterodactyl _____/___/_______ _______ ______`)
+    fmt.Println(`\_____\    \/\/    /   /       /  __   /   ___/`)
+    fmt.Println(`   \___\          /   /   /   /  /_/  /___   /`)
+    fmt.Println(`        \___/\___/___/___/___/___    /______/`)
+    fmt.Println(`                            /_______/ v` + Version)
+    fmt.Println()
 }