chore(all): Providers containing all provider objects

- Share the same providers for updater and vpn
- Initialise all providers at start
- Get from `Providers` instead of constructing on every run

internal/provider/providers.go

@@ -0,0 +1,91 @@
+package provider
+
+import (
+	"fmt"
+	"math/rand"
+	"net/http"
+	"time"
+
+	"github.com/qdm12/gluetun/internal/configuration/settings"
+	"github.com/qdm12/gluetun/internal/constants/providers"
+	"github.com/qdm12/gluetun/internal/models"
+	"github.com/qdm12/gluetun/internal/provider/common"
+	"github.com/qdm12/gluetun/internal/provider/custom"
+	"github.com/qdm12/gluetun/internal/provider/cyberghost"
+	"github.com/qdm12/gluetun/internal/provider/expressvpn"
+	"github.com/qdm12/gluetun/internal/provider/fastestvpn"
+	"github.com/qdm12/gluetun/internal/provider/hidemyass"
+	"github.com/qdm12/gluetun/internal/provider/ipvanish"
+	"github.com/qdm12/gluetun/internal/provider/ivpn"
+	"github.com/qdm12/gluetun/internal/provider/mullvad"
+	"github.com/qdm12/gluetun/internal/provider/nordvpn"
+	"github.com/qdm12/gluetun/internal/provider/perfectprivacy"
+	"github.com/qdm12/gluetun/internal/provider/privado"
+	"github.com/qdm12/gluetun/internal/provider/privateinternetaccess"
+	"github.com/qdm12/gluetun/internal/provider/privatevpn"
+	"github.com/qdm12/gluetun/internal/provider/protonvpn"
+	"github.com/qdm12/gluetun/internal/provider/purevpn"
+	"github.com/qdm12/gluetun/internal/provider/surfshark"
+	"github.com/qdm12/gluetun/internal/provider/torguard"
+	"github.com/qdm12/gluetun/internal/provider/vpnunlimited"
+	"github.com/qdm12/gluetun/internal/provider/vyprvpn"
+	"github.com/qdm12/gluetun/internal/provider/wevpn"
+	"github.com/qdm12/gluetun/internal/provider/windscribe"
+)
+
+type Providers struct {
+	providerNameToProvider map[string]Provider
+}
+
+type Storage interface {
+	FilterServers(provider string, selection settings.ServerSelection) (
+		servers []models.Server, err error)
+	GetServerByName(provider, name string) (server models.Server, ok bool)
+}
+
+func NewProviders(storage Storage, timeNow func() time.Time,
+	updaterWarner common.Warner, client *http.Client, unzipper common.Unzipper) *Providers {
+	randSource := rand.NewSource(timeNow().UnixNano())
+
+	targetLength := len(providers.AllWithCustom())
+	providerNameToProvider := make(map[string]Provider, targetLength)
+	providerNameToProvider[providers.Custom] = custom.New()
+	providerNameToProvider[providers.Cyberghost] = cyberghost.New(storage, randSource)
+	providerNameToProvider[providers.Expressvpn] = expressvpn.New(storage, randSource, unzipper, updaterWarner)
+	providerNameToProvider[providers.Fastestvpn] = fastestvpn.New(storage, randSource, unzipper, updaterWarner)
+	providerNameToProvider[providers.HideMyAss] = hidemyass.New(storage, randSource, client, updaterWarner)
+	providerNameToProvider[providers.Ipvanish] = ipvanish.New(storage, randSource, unzipper, updaterWarner)
+	providerNameToProvider[providers.Ivpn] = ivpn.New(storage, randSource, client, updaterWarner)
+	providerNameToProvider[providers.Mullvad] = mullvad.New(storage, randSource, client)
+	providerNameToProvider[providers.Nordvpn] = nordvpn.New(storage, randSource, client, updaterWarner)
+	providerNameToProvider[providers.Perfectprivacy] = perfectprivacy.New(storage, randSource, unzipper, updaterWarner)
+	providerNameToProvider[providers.Privado] = privado.New(storage, randSource, client, unzipper, updaterWarner)
+	providerNameToProvider[providers.PrivateInternetAccess] = privateinternetaccess.New(storage, randSource, timeNow, client) //nolint:lll
+	providerNameToProvider[providers.Privatevpn] = privatevpn.New(storage, randSource, unzipper, updaterWarner)
+	providerNameToProvider[providers.Protonvpn] = protonvpn.New(storage, randSource, client, updaterWarner)
+	providerNameToProvider[providers.Purevpn] = purevpn.New(storage, randSource, client, unzipper, updaterWarner)
+	providerNameToProvider[providers.Surfshark] = surfshark.New(storage, randSource, client, unzipper, updaterWarner)
+	providerNameToProvider[providers.Torguard] = torguard.New(storage, randSource, unzipper, updaterWarner)
+	providerNameToProvider[providers.VPNUnlimited] = vpnunlimited.New(storage, randSource, unzipper, updaterWarner)
+	providerNameToProvider[providers.Vyprvpn] = vyprvpn.New(storage, randSource, unzipper, updaterWarner)
+	providerNameToProvider[providers.Wevpn] = wevpn.New(storage, randSource, updaterWarner)
+	providerNameToProvider[providers.Windscribe] = windscribe.New(storage, randSource, client, updaterWarner)
+
+	if len(providerNameToProvider) != targetLength {
+		// Programming sanity check
+		panic(fmt.Sprintf("invalid number of providers, expected %d but got %d",
+			targetLength, len(providerNameToProvider)))
+	}
+
+	return &Providers{
+		providerNameToProvider: providerNameToProvider,
+	}
+}
+
+func (p *Providers) Get(providerName string) (provider Provider) {
+	provider, ok := p.providerNameToProvider[providerName]
+	if !ok {
+		panic(fmt.Sprintf("provider %q not found", providerName))
+	}
+	return provider
+}