package acl

import (
	"fmt"

	v2 "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/acl/v2"
	aclSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/acl"
	aperesource "git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
	nativeschema "git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
)

type Request struct {
	operation  string
	resource   *resource
	properties map[string]string
}

var _ aperesource.Request = (*Request)(nil)

type resource struct {
	name       string
	properties map[string]string
}

var _ aperesource.Resource = (*resource)(nil)

func (r *resource) Name() string {
	return r.name
}

func (r *resource) Property(key string) string {
	return r.properties[key]
}

func getResource(reqInfo v2.RequestInfo) *resource {
	var name string
	cid := reqInfo.ContainerID()
	if oid := reqInfo.ObjectID(); oid != nil {
		name = fmt.Sprintf(nativeschema.ResourceFormatRootContainerObject, cid.EncodeToString(), oid.EncodeToString())
	} else {
		name = fmt.Sprintf(nativeschema.ResourceFormatRootContainerObjects, cid.EncodeToString())
	}
	return &resource{
		name:       name,
		properties: make(map[string]string),
	}
}

func getProperties(_ v2.RequestInfo) map[string]string {
	return map[string]string{
		nativeschema.PropertyKeyActorPublicKey: "",
		nativeschema.PropertyKeyActorRole:      "",
	}
}

func getOperation(reqInfo v2.RequestInfo) string {
	switch op := reqInfo.Operation(); op {
	case aclSDK.OpObjectGet:
		return nativeschema.MethodGetObject
	case aclSDK.OpObjectHead:
		return nativeschema.MethodHeadObject
	case aclSDK.OpObjectPut:
		return nativeschema.MethodPutObject
	case aclSDK.OpObjectDelete:
		return nativeschema.MethodDeleteObject
	case aclSDK.OpObjectSearch:
		return nativeschema.MethodSearchObject
	case aclSDK.OpObjectRange:
		return nativeschema.MethodRangeObject
	case aclSDK.OpObjectHash:
		return nativeschema.MethodHashObject
	default:
		return ""
	}
}

func NewRequest() *Request {
	return &Request{
		resource:   new(resource),
		properties: map[string]string{},
	}
}

func (r *Request) FromRequestInfo(ri v2.RequestInfo) {
	r.operation = getOperation(ri)
	r.resource = getResource(ri)
	r.properties = getProperties(ri)
}

func (r *Request) Operation() string {
	return r.operation
}

func (r *Request) Property(key string) string {
	return r.properties[key]
}

func (r *Request) Resource() aperesource.Resource {
	return r.resource
}