first commit

internal/config/config.go

@@ -0,0 +1,50 @@
+package config
+
+import (
+	"github.com/spf13/viper"
+)
+
+type Config struct {
+	Server   ServerConfig   `mapstructure:"server"`
+	Database DatabaseConfig `mapstructure:"database"`
+}
+
+type ServerConfig struct {
+	Port string `mapstructure:"port"`
+	Host string `mapstructure:"host"`
+}
+
+type DatabaseConfig struct {
+	Type string `mapstructure:"type"`
+	Path string `mapstructure:"path"`
+}
+
+func Load() (*Config, error) {
+	viper.SetConfigName("config")
+	viper.SetConfigType("yaml")
+	viper.AddConfigPath(".")
+	viper.AddConfigPath("./config")
+
+	// Defaults
+	viper.SetDefault("server.port", "8080")
+	viper.SetDefault("server.host", "localhost")
+	viper.SetDefault("database.type", "sqlite")
+	viper.SetDefault("database.path", "./data.db")
+
+	// Environment variables
+	viper.AutomaticEnv()
+
+	if err := viper.ReadInConfig(); err != nil {
+		// Config file not found, use defaults
+		if _, ok := err.(viper.ConfigFileNotFoundError); !ok {
+			return nil, err
+		}
+	}
+
+	var config Config
+	if err := viper.Unmarshal(&config); err != nil {
+		return nil, err
+	}
+
+	return &config, nil
+}