Support data coming from the panel better

.gitignore

@@ -46,3 +46,4 @@ test_*/
 !.gitkeep
 debug
 data/.states.json
+.DS_Store

router/router_server_backup.go

@@ -1,6 +1,8 @@
 package router
 
 import (
+	"errors"
+	"fmt"
 	"github.com/gin-gonic/gin"
 	"github.com/pterodactyl/wings/server"
 	"github.com/pterodactyl/wings/server/backup"
@@ -12,14 +14,27 @@ import (
 func postServerBackup(c *gin.Context) {
 	s := GetServer(c.Param("server"))
 
-	data := &backup.LocalBackup{}
+	data := &backup.Request{}
 	c.BindJSON(&data)
 
-	go func(b *backup.LocalBackup, serv *server.Server) {
-		if err := serv.BackupLocal(b); err != nil {
-			zap.S().Errorw("failed to generate backup for server", zap.Error(err))
+	switch data.Adapter {
+	case backup.LocalBackupAdapter:
+		adapter, err := data.NewLocalBackup()
+		if err != nil {
+			TrackedServerError(err, s).AbortWithServerError(c)
+			return
 		}
-	}(data, s)
+
+		go func(b *backup.LocalBackup, serv *server.Server) {
+			if err := serv.BackupLocal(b); err != nil {
+				zap.S().Errorw("failed to generate backup for server", zap.Error(err))
+			}
+		}(adapter, s)
+	case backup.S3BackupAdapter:
+		TrackedServerError(errors.New(fmt.Sprintf("unsupported backup adapter [%s] provided", data.Adapter)), s).AbortWithServerError(c)
+	default:
+		TrackedServerError(errors.New(fmt.Sprintf("unknown backup adapter [%s] provided", data.Adapter)), s).AbortWithServerError(c)
+	}
 
 	c.Status(http.StatusAccepted)
 }

server/backup/backup.go

@@ -1,9 +1,35 @@
 package backup
 
 import (
+	"errors"
+	"fmt"
 	"github.com/pterodactyl/wings/api"
 )
 
+const (
+	LocalBackupAdapter = "local"
+	S3BackupAdapter    = "s3"
+)
+
+type Request struct {
+	Adapter      string   `json:"adapter"`
+	Uuid         string   `json:"uuid"`
+	IgnoredFiles []string `json:"ignored_files"`
+	PresignedUrl string   `json:"presigned_url"`
+}
+
+// Generates a new local backup struct.
+func (r *Request) NewLocalBackup() (*LocalBackup, error) {
+	if r.Adapter != LocalBackupAdapter {
+		return nil, errors.New(fmt.Sprintf("cannot create local backup using [%s] adapter", r.Adapter))
+	}
+
+	return &LocalBackup{
+		Uuid:         r.Uuid,
+		IgnoredFiles: r.IgnoredFiles,
+	}, nil
+}
+
 type Backup interface {
 	// Returns the UUID of this backup as tracked by the panel instance.
 	Identifier() string