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/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import "Firestore/Source/Local/FSTLocalSerializer.h"
#include <cinttypes>
#import "FIRTimestamp.h"
#import "Firestore/Protos/objc/firestore/local/MaybeDocument.pbobjc.h"
#import "Firestore/Protos/objc/firestore/local/Mutation.pbobjc.h"
#import "Firestore/Protos/objc/firestore/local/Target.pbobjc.h"
#import "Firestore/Protos/objc/google/firestore/v1beta1/Document.pbobjc.h"
#import "Firestore/Source/Core/FSTQuery.h"
#import "Firestore/Source/Local/FSTQueryData.h"
#import "Firestore/Source/Model/FSTDocument.h"
#import "Firestore/Source/Model/FSTFieldValue.h"
#import "Firestore/Source/Model/FSTMutationBatch.h"
#import "Firestore/Source/Remote/FSTSerializerBeta.h"
#include "Firestore/core/include/firebase/firestore/timestamp.h"
#include "Firestore/core/src/firebase/firestore/model/document_key.h"
#include "Firestore/core/src/firebase/firestore/model/snapshot_version.h"
#include "Firestore/core/src/firebase/firestore/util/hard_assert.h"
using firebase::Timestamp;
using firebase::firestore::model::DocumentKey;
using firebase::firestore::model::SnapshotVersion;
@interface FSTLocalSerializer ()
@property(nonatomic, strong, readonly) FSTSerializerBeta *remoteSerializer;
@end
/** Serializer for values stored in the LocalStore. */
@implementation FSTLocalSerializer
- (instancetype)initWithRemoteSerializer:(FSTSerializerBeta *)remoteSerializer {
self = [super init];
if (self) {
_remoteSerializer = remoteSerializer;
}
return self;
}
- (FSTPBMaybeDocument *)encodedMaybeDocument:(FSTMaybeDocument *)document {
FSTPBMaybeDocument *proto = [FSTPBMaybeDocument message];
if ([document isKindOfClass:[FSTDeletedDocument class]]) {
proto.noDocument = [self encodedDeletedDocument:(FSTDeletedDocument *)document];
} else if ([document isKindOfClass:[FSTDocument class]]) {
proto.document = [self encodedDocument:(FSTDocument *)document];
} else {
HARD_FAIL("Unknown document type %s", NSStringFromClass([document class]));
}
return proto;
}
- (FSTMaybeDocument *)decodedMaybeDocument:(FSTPBMaybeDocument *)proto {
switch (proto.documentTypeOneOfCase) {
case FSTPBMaybeDocument_DocumentType_OneOfCase_Document:
return [self decodedDocument:proto.document];
case FSTPBMaybeDocument_DocumentType_OneOfCase_NoDocument:
return [self decodedDeletedDocument:proto.noDocument];
default:
HARD_FAIL("Unknown MaybeDocument %s", proto);
}
}
/**
* Encodes a Document for local storage. This differs from the v1beta1 RPC serializer for
* Documents in that it preserves the updateTime, which is considered an output only value by the
* server.
*/
- (GCFSDocument *)encodedDocument:(FSTDocument *)document {
FSTSerializerBeta *remoteSerializer = self.remoteSerializer;
GCFSDocument *proto = [GCFSDocument message];
proto.name = [remoteSerializer encodedDocumentKey:document.key];
proto.fields = [remoteSerializer encodedFields:document.data];
proto.updateTime = [remoteSerializer encodedVersion:document.version];
return proto;
}
/** Decodes a Document proto to the equivalent model. */
- (FSTDocument *)decodedDocument:(GCFSDocument *)document {
FSTSerializerBeta *remoteSerializer = self.remoteSerializer;
FSTObjectValue *data = [remoteSerializer decodedFields:document.fields];
DocumentKey key = [remoteSerializer decodedDocumentKey:document.name];
SnapshotVersion version = [remoteSerializer decodedVersion:document.updateTime];
return [FSTDocument documentWithData:data key:key version:version hasLocalMutations:NO];
}
/** Encodes a NoDocument value to the equivalent proto. */
- (FSTPBNoDocument *)encodedDeletedDocument:(FSTDeletedDocument *)document {
FSTSerializerBeta *remoteSerializer = self.remoteSerializer;
FSTPBNoDocument *proto = [FSTPBNoDocument message];
proto.name = [remoteSerializer encodedDocumentKey:document.key];
proto.readTime = [remoteSerializer encodedVersion:document.version];
return proto;
}
/** Decodes a NoDocument proto to the equivalent model. */
- (FSTDeletedDocument *)decodedDeletedDocument:(FSTPBNoDocument *)proto {
FSTSerializerBeta *remoteSerializer = self.remoteSerializer;
DocumentKey key = [remoteSerializer decodedDocumentKey:proto.name];
SnapshotVersion version = [remoteSerializer decodedVersion:proto.readTime];
return [FSTDeletedDocument documentWithKey:key version:version];
}
- (FSTPBWriteBatch *)encodedMutationBatch:(FSTMutationBatch *)batch {
FSTSerializerBeta *remoteSerializer = self.remoteSerializer;
FSTPBWriteBatch *proto = [FSTPBWriteBatch message];
proto.batchId = batch.batchID;
proto.localWriteTime = [remoteSerializer
encodedTimestamp:Timestamp{batch.localWriteTime.seconds, batch.localWriteTime.nanoseconds}];
NSMutableArray<GCFSWrite *> *writes = proto.writesArray;
for (FSTMutation *mutation in batch.mutations) {
[writes addObject:[remoteSerializer encodedMutation:mutation]];
}
return proto;
}
- (FSTMutationBatch *)decodedMutationBatch:(FSTPBWriteBatch *)batch {
FSTSerializerBeta *remoteSerializer = self.remoteSerializer;
int batchID = batch.batchId;
NSMutableArray<FSTMutation *> *mutations = [NSMutableArray array];
for (GCFSWrite *write in batch.writesArray) {
[mutations addObject:[remoteSerializer decodedMutation:write]];
}
Timestamp localWriteTime = [remoteSerializer decodedTimestamp:batch.localWriteTime];
return [[FSTMutationBatch alloc]
initWithBatchID:batchID
localWriteTime:[FIRTimestamp timestampWithSeconds:localWriteTime.seconds()
nanoseconds:localWriteTime.nanoseconds()]
mutations:mutations];
}
- (FSTPBTarget *)encodedQueryData:(FSTQueryData *)queryData {
FSTSerializerBeta *remoteSerializer = self.remoteSerializer;
HARD_ASSERT(queryData.purpose == FSTQueryPurposeListen,
"only queries with purpose %s may be stored, got %s", FSTQueryPurposeListen,
queryData.purpose);
FSTPBTarget *proto = [FSTPBTarget message];
proto.targetId = queryData.targetID;
proto.lastListenSequenceNumber = queryData.sequenceNumber;
proto.snapshotVersion = [remoteSerializer encodedVersion:queryData.snapshotVersion];
proto.resumeToken = queryData.resumeToken;
FSTQuery *query = queryData.query;
if ([query isDocumentQuery]) {
proto.documents = [remoteSerializer encodedDocumentsTarget:query];
} else {
proto.query = [remoteSerializer encodedQueryTarget:query];
}
return proto;
}
- (FSTQueryData *)decodedQueryData:(FSTPBTarget *)target {
FSTSerializerBeta *remoteSerializer = self.remoteSerializer;
FSTTargetID targetID = target.targetId;
FSTListenSequenceNumber sequenceNumber = target.lastListenSequenceNumber;
SnapshotVersion version = [remoteSerializer decodedVersion:target.snapshotVersion];
NSData *resumeToken = target.resumeToken;
FSTQuery *query;
switch (target.targetTypeOneOfCase) {
case FSTPBTarget_TargetType_OneOfCase_Documents:
query = [remoteSerializer decodedQueryFromDocumentsTarget:target.documents];
break;
case FSTPBTarget_TargetType_OneOfCase_Query:
query = [remoteSerializer decodedQueryFromQueryTarget:target.query];
break;
default:
HARD_FAIL("Unknown Target.targetType %s", target.targetTypeOneOfCase);
}
return [[FSTQueryData alloc] initWithQuery:query
targetID:targetID
listenSequenceNumber:sequenceNumber
purpose:FSTQueryPurposeListen
snapshotVersion:version
resumeToken:resumeToken];
}
- (GPBTimestamp *)encodedVersion:(const SnapshotVersion &)version {
return [self.remoteSerializer encodedVersion:version];
}
- (SnapshotVersion)decodedVersion:(GPBTimestamp *)version {
return [self.remoteSerializer decodedVersion:version];
}
@end
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