able to get product

internal/common/config/duration.go

@@ -0,0 +1,24 @@
+package config
+
+import "time"
+
+type Duration time.Duration
+
+func (d *Duration) UnmarshalJSON(data []byte) error {
+	if len(data) == 0 {
+		*d = 0
+		return nil
+	}
+
+	duration, err := time.ParseDuration(string(data))
+	if err != nil {
+		return err
+	}
+
+	*d = Duration(duration)
+	return nil
+}
+
+func (d Duration) Std() time.Duration {
+	return time.Duration(d)
+}

internal/common/config/log.go

@@ -1,8 +1,11 @@
 package config
 
 import (
+	"bytes"
 	"log/slog"
 	"os"
+
+	"git.loyso.art/frx/kurious/internal/common/errors"
 )
 
 type LogFormat uint8
@@ -12,6 +15,19 @@ const (
 	LogFormatJSON
 )
 
+func (f *LogFormat) UnmarshalText(data []byte) error {
+	switch format := string(bytes.ToLower(data)); format {
+	case "json":
+		*f = LogFormatJSON
+	case "text":
+		*f = LogFormatText
+	default:
+		return errors.NewValidationError("format", "unsupported value "+format)
+	}
+
+	return nil
+}
+
 type LogLevel uint8
 
 const (
@@ -21,12 +37,29 @@ const (
 	LogLevelError
 )
 
-type LogConfig struct {
-	Level  LogLevel
-	Format LogFormat
+func (lvl *LogLevel) UnmarshalText(data []byte) error {
+	switch level := string(bytes.ToLower(data)); level {
+	case "debug", "":
+		*lvl = LogLevelDebug
+	case "info":
+		*lvl = LogLevelInfo
+	case "warn":
+		*lvl = LogLevelWarn
+	case "error":
+		*lvl = LogLevelError
+	default:
+		return errors.NewValidationError("level", "unsupported value "+level)
+	}
+
+	return nil
 }
 
-func NewSLogger(config LogConfig) *slog.Logger {
+type Log struct {
+	Level  LogLevel  `json:"level"`
+	Format LogFormat `json:"format"`
+}
+
+func NewSLogger(config Log) *slog.Logger {
 	var level slog.Level
 	switch config.Level {
 	case LogLevelDebug:

internal/common/config/ydb.go

@@ -0,0 +1,63 @@
+package config
+
+import (
+	"encoding/json"
+	"time"
+
+	"git.loyso.art/frx/kurious/internal/common/errors"
+)
+
+type YCAuth interface {
+	isYCAuth()
+}
+
+type YCAuthCAKeysFile struct{ Path string }
+
+func (YCAuthCAKeysFile) isYCAuth() {}
+
+type YCAuthIAMToken struct{ Token string }
+
+func (YCAuthIAMToken) isYCAuth() {}
+
+type YCAuthNone struct{}
+
+func (YCAuthNone) isYCAuth() {}
+
+type YDB struct {
+	DSN              string
+	Auth             YCAuth
+	ShutdownDuration time.Duration
+}
+
+func (ydb *YDB) UnmarshalJSON(data []byte) error {
+	type ydbConfig struct {
+		DSN              string   `json:"dsn"`
+		CAKeysFile       *string  `json:"ca_keys_file_path"`
+		StaticIAMToken   *string  `json:"static_iam_token"`
+		ShutdownDuration Duration `json:"duration"`
+	}
+
+	var imcfg ydbConfig
+	err := json.Unmarshal(data, &imcfg)
+	if err != nil {
+		return err
+	}
+
+	ydb.DSN = imcfg.DSN
+	ydb.ShutdownDuration = imcfg.ShutdownDuration.Std()
+	if imcfg.CAKeysFile != nil && imcfg.StaticIAMToken != nil {
+		return errors.NewValidationError("ca_keys_file_path", "could not be set together with static_iam_token field")
+	} else if imcfg.CAKeysFile != nil {
+		ydb.Auth = YCAuthCAKeysFile{
+			Path: *imcfg.CAKeysFile,
+		}
+	} else if imcfg.StaticIAMToken != nil {
+		ydb.Auth = YCAuthIAMToken{
+			Token: *imcfg.StaticIAMToken,
+		}
+	} else {
+		ydb.Auth = YCAuthNone{}
+	}
+
+	return nil
+}