fix(config): decode config into GlobalConfig variable

Author: ploMP4

internal/config/config.go

@@ -4,7 +4,9 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"reflect"
 
+	"github.com/go-viper/mapstructure/v2"
 	"github.com/spf13/viper"
 
 	"github.com/museslabs/kyma/internal/tui/transitions"
@@ -27,6 +29,34 @@ type presetConfig struct {
 	Transition transitions.Transition `mapstructure:"transition"`
 }
 
+func styleConfigDecodeHook() mapstructure.DecodeHookFunc {
+	return func(from reflect.Type, to reflect.Type, data any) (any, error) {
+		if to == reflect.TypeOf(StyleConfig{}) {
+			m, ok := data.(map[string]any)
+			if !ok {
+				return data, nil
+			}
+			var s StyleConfig
+			if err := s.DecodeMap(m); err != nil {
+				return nil, err
+			}
+			return s, nil
+		}
+		return data, nil
+	}
+}
+
+func transitionDecodeHook() mapstructure.DecodeHookFunc {
+	return func(from reflect.Type, to reflect.Type, data any) (any, error) {
+		if from.Kind() == reflect.String &&
+			to == reflect.TypeOf((*transitions.Transition)(nil)).Elem() {
+			name := data.(string)
+			return transitions.Get(name, transitions.Fps), nil
+		}
+		return data, nil
+	}
+}
+
 func Load(configPath string) error {
 	viper.SetConfigName(configName)
 	viper.SetConfigType(configType)
@@ -57,6 +87,22 @@ func Load(configPath string) error {
 		return fmt.Errorf("failed to read config: %w", err)
 	}
 
+	decoder, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{
+		DecodeHook: mapstructure.ComposeDecodeHookFunc(
+			styleConfigDecodeHook(),
+			transitionDecodeHook(),
+		),
+		Result:  &GlobalConfig,
+		TagName: "mapstructure",
+	})
+	if err != nil {
+		return err
+	}
+
+	if err := decoder.Decode(viper.AllSettings()); err != nil {
+		return err
+	}
+
 	return nil
 }
 

internal/config/style.go

@@ -9,6 +9,7 @@ import (
 	"github.com/charmbracelet/glamour/ansi"
 	"github.com/charmbracelet/glamour/styles"
 	"github.com/charmbracelet/lipgloss"
+	"github.com/go-viper/mapstructure/v2"
 	"github.com/goccy/go-yaml"
 
 	"github.com/museslabs/kyma/internal/tui/transitions"
@@ -36,6 +37,30 @@ type StyleConfig struct {
 	Theme       GlamourTheme    `yaml:"theme"`
 }
 
+func (s *StyleConfig) DecodeMap(input map[string]any) error {
+	aux := struct {
+		Layout      string `mapstructure:"layout"`
+		Border      string `mapstructure:"border"`
+		BorderColor string `mapstructure:"border_color"`
+		Theme       string `mapstructure:"theme"`
+	}{}
+
+	if err := mapstructure.Decode(input, &aux); err != nil {
+		return err
+	}
+
+	var err error
+	s.Layout, err = getLayout(aux.Layout)
+	if err != nil {
+		return err
+	}
+	s.Border = getBorder(aux.Border)
+	s.BorderColor = aux.BorderColor
+	s.Theme = getTheme(aux.Theme)
+
+	return nil
+}
+
 func (s *StyleConfig) UnmarshalYAML(bytes []byte) error {
 	aux := struct {
 		Layout      string `yaml:"layout"`