Move jwt keys to database

Moved code for it to one place
Updated to chi v5

backend/internal/jwt/keys_db.go

@@ -0,0 +1,54 @@
+package jwt
+
+import (
+	"npm/internal/database"
+	"npm/internal/entity"
+	"npm/internal/logger"
+)
+
+var currentKeys KeysModel
+
+// KeysModel is the model
+type KeysModel struct {
+	entity.ModelBase
+	PublicKey  string `gorm:"column:public_key"`
+	PrivateKey string `gorm:"column:private_key"`
+}
+
+// TableName overrides the table name used by gorm
+func (KeysModel) TableName() string {
+	return "keys"
+}
+
+// LoadByID will load from an ID
+func (m *KeysModel) LoadLatest() error {
+	db := database.GetDB()
+	result := db.Order("created_at DESC").First(&m)
+	return result.Error
+}
+
+// Save will save this model to the DB
+func (m *KeysModel) Save() error {
+	db := database.GetDB()
+	result := db.Save(m)
+	return result.Error
+}
+
+// LoadKeys will load from the database, or generate and save new ones
+func LoadKeys() error {
+	// Try to find in db
+	if err := currentKeys.LoadLatest(); err != nil {
+		// Keys probably don't exist, so we need to generate some
+		if currentKeys, err = generateKeys(); err != nil {
+			return err
+		}
+
+		// and save them
+		if err = currentKeys.Save(); err != nil {
+			return err
+		}
+	}
+	logger.Debug("private: %s", currentKeys.PrivateKey)
+	logger.Debug("public: %s", currentKeys.PublicKey)
+	return nil
+}