Refactor main

Convert components to Singletons
Restructure main package
Reduce dependencies

internal/graph/resolver.go

@@ -1,15 +1,39 @@
 package graph
 
 import (
+	"sync"
+
 	"github.com/ClusterCockpit/cc-backend/internal/repository"
+	"github.com/ClusterCockpit/cc-backend/pkg/log"
 	"github.com/jmoiron/sqlx"
 )
 
 // This file will not be regenerated automatically.
 //
 // It serves as dependency injection for your app, add any dependencies you require here.
+var (
+	initOnce         sync.Once
+	resolverInstance *Resolver
+)
 
 type Resolver struct {
 	DB   *sqlx.DB
 	Repo *repository.JobRepository
 }
+
+func Init() {
+	initOnce.Do(func() {
+		db := repository.GetConnection()
+		resolverInstance = &Resolver{
+			DB: db.DB, Repo: repository.GetJobRepository(),
+		}
+	})
+}
+
+func GetResolverInstance() *Resolver {
+	if resolverInstance == nil {
+		log.Fatal("Authentication module not initialized!")
+	}
+
+	return resolverInstance
+}