Configuration package (#369)

internal/configuration/updater.go

@@ -0,0 +1,62 @@
+package configuration
+
+import (
+	"strings"
+	"time"
+
+	"github.com/qdm12/golibs/params"
+)
+
+type Updater struct {
+	Period     time.Duration `json:"period"`
+	DNSAddress string        `json:"dns_address"`
+	Cyberghost bool          `json:"cyberghost"`
+	Mullvad    bool          `json:"mullvad"`
+	Nordvpn    bool          `json:"nordvpn"`
+	PIA        bool          `json:"pia"`
+	Privado    bool          `json:"privado"`
+	Purevpn    bool          `json:"purevpn"`
+	Surfshark  bool          `json:"surfshark"`
+	Vyprvpn    bool          `json:"vyprvpn"`
+	Windscribe bool          `json:"windscribe"`
+	// The two below should be used in CLI mode only
+	Stdout bool `json:"-"` // in order to update constants file (maintainer side)
+	CLI    bool `json:"-"`
+}
+
+func (settings *Updater) String() string {
+	return strings.Join(settings.lines(), "\n")
+}
+
+func (settings *Updater) lines() (lines []string) {
+	if settings.Period == 0 {
+		return nil
+	}
+
+	lines = append(lines, lastIndent+"Updater:")
+
+	lines = append(lines, indent+lastIndent+"Period: every "+settings.Period.String())
+
+	return lines
+}
+
+func (settings *Updater) read(r reader) (err error) {
+	settings.Cyberghost = true
+	settings.Mullvad = true
+	settings.Nordvpn = true
+	settings.PIA = true
+	settings.Purevpn = true
+	settings.Surfshark = true
+	settings.Vyprvpn = true
+	settings.Windscribe = true
+	settings.Stdout = false
+	settings.CLI = false
+	settings.DNSAddress = "127.0.0.1"
+
+	settings.Period, err = r.env.Duration("UPDATER_PERIOD", params.Default("0"))
+	if err != nil {
+		return err
+	}
+
+	return nil
+}