starting to refactored the application

app/server.go

+package main
+
+import (
+	"fmt"
+	"gopkg.in/yaml.v3"
+	. "node/types"
+	"node/utilities"
+	"os"
+)
+
+/**
+ * @file Server.go - Server for the blockchain
+ * @brief Distributed Systems - Blockchain, each instance of this program is a node in the blockchain
+ * @author Xavier Perret
+ * @date 28/10/2022
+ * @version 1.3
+ */
+
+func main() {
+	argsLen := len(os.Args)
+	isThereEnoughArgs := argsLen <= 1
+	if isThereEnoughArgs {
+		fmt.Println("First argument should be the path of the config file '--path=<config.yaml>'")
+		os.Exit(1)
+	}
+
+	// init configuration
+	args := os.Args[1:]
+	fmt.Println("Program started with arguments", args)
+	fmt.Println("config file path is ", args[0][7:])
+
+	buf, err := os.ReadFile(args[0][7:])
+	if err != nil {
+		fmt.Println("Error while reading the config file", err)
+		fmt.Println("Exiting...")
+		os.Exit(1)
+	}
+
+	var c Config
+	err = yaml.Unmarshal(buf, &c)
+	if err != nil {
+		os.Exit(1)
+	}
+
+	utilities.PrintConfig(c)
+
+	amIRoot := argsLen == 3
+	if amIRoot {
+		if os.Args[3] == "--root" {
+			amIRoot = true
+		}
+	}
+	if !amIRoot {
+		fmt.Println("Third argument is not --root meaning this node is not meant to be directly stimulated by the client")
+	}
+
+	fmt.Println("Launching server loop")
+	fmt.Println("Launching user input command line")
+}