// Copyright 2019 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.

// Package cloudpb is a subset of protobufs, copied from google.golang.org/genproto/googleapis/datastore/v1.
//
// They are copied here to provide compatibility to decode keys generated by the cloud.google.com/go/datastore package.
package cloudpb

import (
	"fmt"

	"github.com/golang/protobuf/proto"
)

// A partition ID identifies a grouping of entities. The grouping is always
// by project and namespace, however the namespace ID may be empty.
//
// A partition ID contains several dimensions:
// project ID and namespace ID.
//
// Partition dimensions:
//
// - May be `""`.
// - Must be valid UTF-8 bytes.
// - Must have values that match regex `[A-Za-z\d\.\-_]{1,100}`
// If the value of any dimension matches regex `__.*__`, the partition is
// reserved/read-only.
// A reserved/read-only partition ID is forbidden in certain documented
// contexts.
//
// Foreign partition IDs (in which the project ID does
// not match the context project ID ) are discouraged.
// Reads and writes of foreign partition IDs may fail if the project is not in
// an active state.
type PartitionId struct {
	// The ID of the project to which the entities belong.
	ProjectId string `protobuf:"bytes,2,opt,name=project_id,json=projectId,proto3" json:"project_id,omitempty"`
	// If not empty, the ID of the namespace to which the entities belong.
	NamespaceId          string   `protobuf:"bytes,4,opt,name=namespace_id,json=namespaceId,proto3" json:"namespace_id,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

func (m *PartitionId) Reset()         { *m = PartitionId{} }
func (m *PartitionId) String() string { return proto.CompactTextString(m) }
func (*PartitionId) ProtoMessage()    {}
func (*PartitionId) Descriptor() ([]byte, []int) {
	return fileDescriptor_entity_096a297364b049a5, []int{0}
}
func (m *PartitionId) XXX_Unmarshal(b []byte) error {
	return xxx_messageInfo_PartitionId.Unmarshal(m, b)
}
func (m *PartitionId) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
	return xxx_messageInfo_PartitionId.Marshal(b, m, deterministic)
}
func (dst *PartitionId) XXX_Merge(src proto.Message) {
	xxx_messageInfo_PartitionId.Merge(dst, src)
}
func (m *PartitionId) XXX_Size() int {
	return xxx_messageInfo_PartitionId.Size(m)
}
func (m *PartitionId) XXX_DiscardUnknown() {
	xxx_messageInfo_PartitionId.DiscardUnknown(m)
}

var xxx_messageInfo_PartitionId proto.InternalMessageInfo

func (m *PartitionId) GetProjectId() string {
	if m != nil {
		return m.ProjectId
	}
	return ""
}

func (m *PartitionId) GetNamespaceId() string {
	if m != nil {
		return m.NamespaceId
	}
	return ""
}

// A unique identifier for an entity.
// If a key's partition ID or any of its path kinds or names are
// reserved/read-only, the key is reserved/read-only.
// A reserved/read-only key is forbidden in certain documented contexts.
type Key struct {
	// Entities are partitioned into subsets, currently identified by a project
	// ID and namespace ID.
	// Queries are scoped to a single partition.
	PartitionId *PartitionId `protobuf:"bytes,1,opt,name=partition_id,json=partitionId,proto3" json:"partition_id,omitempty"`
	// The entity path.
	// An entity path consists of one or more elements composed of a kind and a
	// string or numerical identifier, which identify entities. The first
	// element identifies a _root entity_, the second element identifies
	// a _child_ of the root entity, the third element identifies a child of the
	// second entity, and so forth. The entities identified by all prefixes of
	// the path are called the element's _ancestors_.
	//
	// An entity path is always fully complete: *all* of the entity's ancestors
	// are required to be in the path along with the entity identifier itself.
	// The only exception is that in some documented cases, the identifier in the
	// last path element (for the entity) itself may be omitted. For example,
	// the last path element of the key of `Mutation.insert` may have no
	// identifier.
	//
	// A path can never be empty, and a path can have at most 100 elements.
	Path                 []*Key_PathElement `protobuf:"bytes,2,rep,name=path,proto3" json:"path,omitempty"`
	XXX_NoUnkeyedLiteral struct{}           `json:"-"`
	XXX_unrecognized     []byte             `json:"-"`
	XXX_sizecache        int32              `json:"-"`
}

func (m *Key) Reset()         { *m = Key{} }
func (m *Key) String() string { return proto.CompactTextString(m) }
func (*Key) ProtoMessage()    {}
func (*Key) Descriptor() ([]byte, []int) {
	return fileDescriptor_entity_096a297364b049a5, []int{1}
}
func (m *Key) XXX_Unmarshal(b []byte) error {
	return xxx_messageInfo_Key.Unmarshal(m, b)
}
func (m *Key) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
	return xxx_messageInfo_Key.Marshal(b, m, deterministic)
}
func (dst *Key) XXX_Merge(src proto.Message) {
	xxx_messageInfo_Key.Merge(dst, src)
}
func (m *Key) XXX_Size() int {
	return xxx_messageInfo_Key.Size(m)
}
func (m *Key) XXX_DiscardUnknown() {
	xxx_messageInfo_Key.DiscardUnknown(m)
}

// A (kind, ID/name) pair used to construct a key path.
//
// If either name or ID is set, the element is complete.
// If neither is set, the element is incomplete.
type Key_PathElement struct {
	// The kind of the entity.
	// A kind matching regex `__.*__` is reserved/read-only.
	// A kind must not contain more than 1500 bytes when UTF-8 encoded.
	// Cannot be `""`.
	Kind string `protobuf:"bytes,1,opt,name=kind,proto3" json:"kind,omitempty"`
	// The type of ID.
	//
	// Types that are valid to be assigned to IdType:
	//	*Key_PathElement_Id
	//	*Key_PathElement_Name
	IdType               isKey_PathElement_IdType `protobuf_oneof:"id_type"`
	XXX_NoUnkeyedLiteral struct{}                 `json:"-"`
	XXX_unrecognized     []byte                   `json:"-"`
	XXX_sizecache        int32                    `json:"-"`
}

func (m *Key_PathElement) Reset()         { *m = Key_PathElement{} }
func (m *Key_PathElement) String() string { return proto.CompactTextString(m) }
func (*Key_PathElement) ProtoMessage()    {}
func (*Key_PathElement) Descriptor() ([]byte, []int) {
	return fileDescriptor_entity_096a297364b049a5, []int{1, 0}
}
func (m *Key_PathElement) XXX_Unmarshal(b []byte) error {
	return xxx_messageInfo_Key_PathElement.Unmarshal(m, b)
}
func (m *Key_PathElement) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
	return xxx_messageInfo_Key_PathElement.Marshal(b, m, deterministic)
}
func (dst *Key_PathElement) XXX_Merge(src proto.Message) {
	xxx_messageInfo_Key_PathElement.Merge(dst, src)
}
func (m *Key_PathElement) XXX_Size() int {
	return xxx_messageInfo_Key_PathElement.Size(m)
}
func (m *Key_PathElement) XXX_DiscardUnknown() {
	xxx_messageInfo_Key_PathElement.DiscardUnknown(m)
}

var xxx_messageInfo_Key_PathElement proto.InternalMessageInfo

func (m *Key_PathElement) GetKind() string {
	if m != nil {
		return m.Kind
	}
	return ""
}

type isKey_PathElement_IdType interface {
	isKey_PathElement_IdType()
}

type Key_PathElement_Id struct {
	Id int64 `protobuf:"varint,2,opt,name=id,proto3,oneof"`
}

type Key_PathElement_Name struct {
	Name string `protobuf:"bytes,3,opt,name=name,proto3,oneof"`
}

func (*Key_PathElement_Id) isKey_PathElement_IdType() {}

func (*Key_PathElement_Name) isKey_PathElement_IdType() {}

func (m *Key_PathElement) GetIdType() isKey_PathElement_IdType {
	if m != nil {
		return m.IdType
	}
	return nil
}

func (m *Key_PathElement) GetId() int64 {
	if x, ok := m.GetIdType().(*Key_PathElement_Id); ok {
		return x.Id
	}
	return 0
}

func (m *Key_PathElement) GetName() string {
	if x, ok := m.GetIdType().(*Key_PathElement_Name); ok {
		return x.Name
	}
	return ""
}

// XXX_OneofFuncs is for the internal use of the proto package.
func (*Key_PathElement) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
	return _Key_PathElement_OneofMarshaler, _Key_PathElement_OneofUnmarshaler, _Key_PathElement_OneofSizer, []interface{}{
		(*Key_PathElement_Id)(nil),
		(*Key_PathElement_Name)(nil),
	}
}

func _Key_PathElement_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
	m := msg.(*Key_PathElement)
	// id_type
	switch x := m.IdType.(type) {
	case *Key_PathElement_Id:
		b.EncodeVarint(2<<3 | proto.WireVarint)
		b.EncodeVarint(uint64(x.Id))
	case *Key_PathElement_Name:
		b.EncodeVarint(3<<3 | proto.WireBytes)
		b.EncodeStringBytes(x.Name)
	case nil:
	default:
		return fmt.Errorf("Key_PathElement.IdType has unexpected type %T", x)
	}
	return nil
}

func _Key_PathElement_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
	m := msg.(*Key_PathElement)
	switch tag {
	case 2: // id_type.id
		if wire != proto.WireVarint {
			return true, proto.ErrInternalBadWireType
		}
		x, err := b.DecodeVarint()
		m.IdType = &Key_PathElement_Id{int64(x)}
		return true, err
	case 3: // id_type.name
		if wire != proto.WireBytes {
			return true, proto.ErrInternalBadWireType
		}
		x, err := b.DecodeStringBytes()
		m.IdType = &Key_PathElement_Name{x}
		return true, err
	default:
		return false, nil
	}
}

func _Key_PathElement_OneofSizer(msg proto.Message) (n int) {
	m := msg.(*Key_PathElement)
	// id_type
	switch x := m.IdType.(type) {
	case *Key_PathElement_Id:
		n += 1 // tag and wire
		n += proto.SizeVarint(uint64(x.Id))
	case *Key_PathElement_Name:
		n += 1 // tag and wire
		n += proto.SizeVarint(uint64(len(x.Name)))
		n += len(x.Name)
	case nil:
	default:
		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
	}
	return n
}

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}

var xxx_messageInfo_Key proto.InternalMessageInfo