package main import ( "strings" "github.com/spf13/viper" ) func ReadConfig() (*viper.Viper, error) { defaults := map[string]any{ "name": "COOPGO Fleets", "dev_env": false, "storage": map[string]any{ "type": "mongodb", "mongodb": map[string]any{ "host": "localhost", "port": "27017", "db_name": "coopgo_platform", "collections": map[string]any{ "vehicles": "fleet_vehicles", "bookings": "fleet_bookings", }, }, }, "services": map[string]any{ "grpc": map[string]any{ "enable": true, "port": 8093, }, }, } v := viper.New() for key, value := range defaults { v.SetDefault(key, value) } v.SetConfigName("config") v.AddConfigPath(".") v.SetEnvKeyReplacer(strings.NewReplacer(".", "_")) v.AutomaticEnv() err := v.ReadInConfig() return v, err }