refactor: new (simpler) version of the sl library

services/config/config.go

@@ -6,47 +6,30 @@ import (
 	"github.com/joho/godotenv"
 )
 
-type Interface interface {
-	sl.Service
+var Slot = sl.NewSlot[*Config]()
 
-	Mode() string
-	Host() string
+type Config struct {
+	Mode string
+	Host string
 }
 
-type Custom struct {
-	ModeValue string
-	HostValue string
-}
-
-func (c Custom) Mode() string { return c.ModeValue }
-func (c Custom) Host() string { return c.HostValue }
-
-func (Custom) Initialize(l *sl.ServiceLocator) error {
-	return nil
-}
-
-type EnvConfig struct {
-	mode string
-	host string
-}
-
-func (c EnvConfig) Mode() string { return c.mode }
-func (c EnvConfig) Host() string { return c.host }
-
-func (c *EnvConfig) Initialize(l *sl.ServiceLocator) error {
+func Load(l *sl.ServiceLocator) (*Config, error) {
 	m, err := godotenv.Read(".env")
 	if err != nil {
-		return err
+		return nil, err
 	}
 
-	c.mode = "production"
+	mode := "production"
 	if v, ok := m["MODE"]; ok {
-		c.mode = v
+		mode = v
 	}
-	c.host = ":4000"
+	host := ":4000"
 	if v, ok := m["HOST"]; ok {
-		c.host = v
+		host = v
 	}
 
-	return nil
+	return &Config{
+		mode,
+		host,
+	}, nil
 }