feat: xmnt

cfg/cfg.go

@@ -0,0 +1,51 @@
+package cfg
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/go-errors/errors"
+	"github.com/ilyakaznacheev/cleanenv"
+
+	"gensokyo.cafe/xmnt/util"
+)
+
+type CfgDef struct {
+	CredentialStore []string `yaml:"credential_store" env-default:"$HOME/.vault2/data_encryption"`
+}
+
+func (c *CfgDef) expand() {
+	for i, path := range c.CredentialStore {
+		c.CredentialStore[i] = os.ExpandEnv(path)
+	}
+}
+
+var Cfg *CfgDef
+
+func LoadAuto() error {
+	loc, err := os.UserConfigDir()
+	if err != nil {
+		return errors.WrapPrefix(err, "cannot obtain user config dir", 0)
+	}
+	path := filepath.Join(loc, "xmnt", "xmnt.yml")
+
+	loadFromFile, err := util.FileExists(path)
+	if err != nil {
+		return errors.WrapPrefix(err, "cannot read config file", 0)
+	}
+
+	cfg := &CfgDef{}
+	if loadFromFile {
+		if err = cleanenv.ReadConfig(path, cfg); err != nil {
+			return errors.WrapPrefix(err, "cannot read config file", 0)
+		}
+	} else {
+		if err = cleanenv.ReadEnv(cfg); err != nil {
+			return errors.WrapPrefix(err, "cannot read config from env", 0)
+		}
+	}
+
+	cfg.expand()
+	Cfg = cfg
+	return nil
+}