breaking: move maxmind config to config.providers

- moved maxmind to separate module
- code refactored
- simplified test

internal/maxmind/types/city_info.go

@@ -0,0 +1,10 @@
+package maxmind
+
+type City struct {
+	Location struct {
+		TimeZone string `maxminddb:"time_zone"`
+	} `maxminddb:"location"`
+	Country struct {
+		IsoCode string `maxminddb:"iso_code"`
+	} `maxminddb:"country"`
+}

internal/maxmind/types/config.go

@@ -0,0 +1,33 @@
+package maxmind
+
+import (
+	"github.com/rs/zerolog"
+	"github.com/yusing/go-proxy/internal/gperr"
+	"github.com/yusing/go-proxy/internal/logging"
+)
+
+type (
+	DatabaseType string
+	Config       struct {
+		AccountID  string       `json:"account_id" validate:"required"`
+		LicenseKey string       `json:"license_key" validate:"required"`
+		Database   DatabaseType `json:"database" validate:"omitempty,oneof=geolite geoip2"`
+	}
+)
+
+const (
+	MaxMindGeoLite DatabaseType = "geolite"
+	MaxMindGeoIP2  DatabaseType = "geoip2"
+)
+
+func (cfg *Config) Validate() gperr.Error {
+	if cfg.Database == "" {
+		cfg.Database = MaxMindGeoLite
+	}
+	return nil
+}
+
+func (cfg *Config) Logger() *zerolog.Logger {
+	l := logging.With().Str("database", string(cfg.Database)).Logger()
+	return &l
+}

internal/maxmind/types/ip_info.go

@@ -0,0 +1,9 @@
+package maxmind
+
+import "net"
+
+type IPInfo struct {
+	IP   net.IP
+	Str  string
+	City *City
+}