Migrate code from Go branch to new repo

config/config.go

@@ -0,0 +1,71 @@
+package config
+
+import (
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/viper"
+)
+
+type Config struct {
+	BindAddress  string  `mapstructure:"bind_address"`
+	Port         string  `mapstructure:"listen_port"`
+	ServerLat    float64 `mapstructure:"server_lat"`
+	ServerLng    float64 `mapstructure:"server_lng"`
+	IPInfoAPIKey string  `mapstructure:"ipinfo_api_key"`
+
+	StatsPassword string `mapstructure:"statistics_password"`
+	RedactIP      bool   `mapstructure:"redact_ip_addresses"`
+
+	DatabaseType     string `mapstructure:"database_type"`
+	DatabaseHostname string `mapstructure:"database_hostname"`
+	DatabaseName     string `mapstructure:"database_name"`
+	DatabaseUsername string `mapstructure:"database_username"`
+	DatabasePassword string `mapstructure:"database_password"`
+
+	DatabaseFile string `mapstructure:"database_file"`
+}
+
+var (
+	loadedConfig *Config = nil
+)
+
+func init() {
+	viper.SetDefault("listen_port", "8989")
+	viper.SetDefault("download_chunks", 4)
+	viper.SetDefault("distance_unit", "K")
+	viper.SetDefault("enable_cors", false)
+	viper.SetDefault("statistics_password", "PASSWORD")
+	viper.SetDefault("redact_ip_addresses", false)
+	viper.SetDefault("database_type", "postgresql")
+	viper.SetDefault("database_hostname", "localhost")
+	viper.SetDefault("database_name", "speedtest")
+	viper.SetDefault("database_username", "postgres")
+
+	viper.SetConfigName("settings")
+	viper.AddConfigPath(".")
+}
+
+func Load() Config {
+	var conf Config
+	if err := viper.ReadInConfig(); err != nil {
+		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
+			log.Warnf("No config file found in search paths, using default values")
+		} else {
+			log.Fatalf("Error reading config: %+v", err)
+		}
+	}
+
+	if err := viper.Unmarshal(&conf); err != nil {
+		log.Fatalf("Error parsing config: %s", err)
+	}
+
+	loadedConfig = &conf
+
+	return conf
+}
+
+func LoadedConfig() *Config {
+	if loadedConfig == nil {
+		Load()
+	}
+	return loadedConfig
+}