package legacy

import (
	"github.com/gorilla/mux"
	"go.uber.org/zap"
)

func AttachS3API(r *mux.Router, obj ObjectLayer, l *zap.Logger) {
	{ // should be removed in feature
		// Initialize all help
		initHelp()

		// TODO: If this name is actually stays unchanges, move it to constants.
		globalGatewayName = "NeoFS S3 Gate"

		// Set when gateway is enabled
		globalIsGateway = true

		// Handle gateway specific env
		gatewayHandleEnvVars()

		// Set system resources to maximum.
		if err := setMaxResources(); err != nil {
			l.Warn("could not set max resources",
				zap.Error(err))
		}

		// TODO: We need to move this code with globalConfigSys.Init()
		// for now keep it here such that "s3" gateway layer initializes
		// itself properly when KMS is set.

		// Initialize server config.
		srvCfg := newServerConfig()

		// Override any values from ENVs.
		lookupConfigs(srvCfg)

		// hold the mutex lock before a new config is assigned.
		globalServerConfigMu.Lock()
		globalServerConfig = srvCfg
		globalServerConfigMu.Unlock()
	}

	// Add API router.
	registerAPIRouter(r, true, true)

	layer := NewGatewayLayerWithLocker(obj)

	// Once endpoints are finalized, initialize the new object api in safe mode.
	globalObjLayerMutex.Lock()
	globalSafeMode = true
	globalObjectAPI = layer
	globalObjLayerMutex.Unlock()

	// Calls all New() for all sub-systems.
	newAllSubsystems()

	// Verify if object layer supports
	// - encryption
	// - compression
	verifyObjectLayerFeatures("gateway NeoFS", layer)

	// Disable safe mode operation, after all initialization is over.
	globalObjLayerMutex.Lock()
	globalSafeMode = false
	globalObjLayerMutex.Unlock()
}