package dbhandler

import (
	"fmt"
	"sync"

	"git.acooldomain.co/server-manager/backend-kubernetes-go/db_handler/mongo"
	"git.acooldomain.co/server-manager/backend-kubernetes-go/dbhandler"
	"git.acooldomain.co/server-manager/backend-kubernetes-go/models"
)

var (
	mu                         sync.Mutex
	existingServerAuthHandlers = make(map[string]dbhandler.ServersAuthorizationDbHandler)
)

func configToKey(config any) (string, error) {
	switch c := config.(type) {
	case models.MongoDBConfig:
		return fmt.Sprintf("mongo:%s:%s:%s:%s:%s", c.Url, c.Database, c.Collection, c.Username, c.Password), nil
	default:
		return "", fmt.Errorf("unknown config format")
	}
}

func GetServersAuthDbHandler(config any) (dbhandler.ServersAuthorizationDbHandler, error) {
	mu.Lock()
	defer mu.Unlock()
	key, err := configToKey(config)
	if handler, exists := existingServerAuthHandlers[key]; err != nil && exists {
		return handler, nil
	}

	switch c := config.(type) {
	case models.MongoDBConfig:
		handler, err := mongo.NewServersAuthorizationHandler(c)
		return handler, err
	}

	return nil, fmt.Errorf("Unknown config format")
}