working on a global config

config/config.go

@@ -0,0 +1,51 @@
+// package config is responsible for the configuration of the application
+package config
+
+// NOTE: actually make a package out of this if possible - lets try
+
+import (
+	"os"
+	"sync"
+
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	instance *ESDICfg
+	once     sync.Once
+)
+
+type ESDICfg struct{}
+
+func (cfg *ESDICfg) loadConfiguration() error {
+	file, err := os.ReadFile("./cfg.yaml")
+	if err != nil {
+		return err
+	}
+
+	err = yaml.Unmarshal(file, &instance)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func Setup() error {
+	instance = &ESDICfg{}
+
+	err := instance.loadConfiguration()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func GetCfg() *ESDICfg {
+	if instance == nil {
+		panic("configuration instance wasn't initialized")
+	}
+
+	return instance
+}