addet a config file

config/config.go

@@ -0,0 +1,32 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/BurntSushi/toml"
+)
+
+type Config struct {
+	APIKey string `toml:"api_key"`
+}
+
+func LoadConfig() (*Config, error) {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return nil, fmt.Errorf("could not determine home directory: %w", err)
+	}
+
+	configPath := filepath.Join(homeDir, ".config", "ytgo", "config.toml")
+	var config Config
+	if _, err := toml.DecodeFile(configPath, &config); err != nil {
+		return nil, fmt.Errorf("could not read config file: %w", err)
+	}
+
+	if config.APIKey == "" {
+		return nil, fmt.Errorf("API key is missing in config file")
+	}
+
+	return &config, nil
+}