[ios][database] Refactor RNFirebaseDatabaseReference
This commit is contained in:
Chris Bianca
parent
7f4882abe6
commit
27453ac31a
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@ -1,206 +1,9 @@
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#import "RNFirebaseDatabase.h"
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#import "RNFirebaseEvents.h"
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#import "Firebase.h"
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#if __has_include(<FirebaseDatabase/FIRDatabase.h>)
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@interface RNFirebaseDBReference : NSObject
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@property RCTEventEmitter *emitter;
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@property FIRDatabaseQuery *query;
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@property NSNumber *refId;
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@property NSString *path;
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@property NSMutableDictionary *listeners;
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+ (NSDictionary *)snapshotToDict:(FIRDataSnapshot *)snapshot;
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@end
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@implementation RNFirebaseDBReference
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- (id)initWithPathAndModifiers:(RCTEventEmitter *)emitter database:(FIRDatabase *)database refId:(NSNumber *)refId path:(NSString *)path modifiers:(NSArray *)modifiers {
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self = [super init];
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if (self) {
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_emitter = emitter;
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_refId = refId;
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_path = path;
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_query = [self buildQueryAtPathWithModifiers:database path:path modifiers:modifiers];
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_listeners = [[NSMutableDictionary alloc] init];
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}
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return self;
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}
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- (void)addEventHandler:(NSNumber *)listenerId eventName:(NSString *)eventName {
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if (!_listeners[listenerId]) {
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id andPreviousSiblingKeyWithBlock = ^(FIRDataSnapshot *_Nonnull snapshot, NSString *_Nullable previousChildName) {
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NSDictionary *props = [RNFirebaseDBReference snapshotToDict:snapshot];
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[self sendJSEvent:DATABASE_DATA_EVENT title:eventName props:@{@"eventName": eventName, @"refId": _refId, @"listenerId": listenerId, @"path": _path, @"snapshot": props, @"previousChildName": previousChildName != nil ? previousChildName : [NSNull null]}];
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};
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id errorBlock = ^(NSError *_Nonnull error) {
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NSLog(@"Error onDBEvent: %@", [error debugDescription]);
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[self removeEventHandler:listenerId eventName:eventName];
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[self getAndSendDatabaseError:error listenerId:listenerId];
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};
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int eventType = [self eventTypeFromName:eventName];
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FIRDatabaseHandle handle = [_query observeEventType:eventType andPreviousSiblingKeyWithBlock:andPreviousSiblingKeyWithBlock withCancelBlock:errorBlock];
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_listeners[listenerId] = @(handle);
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} else {
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NSLog(@"Warning Trying to add duplicate listener for refId: %@ listenerId: %@", _refId, listenerId);
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}
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}
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- (void)addSingleEventHandler:(NSString *)eventName callback:(RCTResponseSenderBlock)callback {
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FIRDataEventType firDataEventType = (FIRDataEventType)[self eventTypeFromName:eventName];
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[_query observeSingleEventOfType:firDataEventType andPreviousSiblingKeyWithBlock:^(FIRDataSnapshot *_Nonnull snapshot, NSString *_Nullable previousChildName) {
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NSDictionary *props = [RNFirebaseDBReference snapshotToDict:snapshot];
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callback(@[[NSNull null], @{@"eventName": eventName, @"path": _path, @"refId": _refId, @"snapshot": props, @"previousChildName": previousChildName != nil ? previousChildName : [NSNull null]}]);
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} withCancelBlock:^(NSError *_Nonnull error) {
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NSLog(@"Error onDBEventOnce: %@", [error debugDescription]);
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callback(@[@{@"eventName": DATABASE_ERROR_EVENT, @"path": _path, @"refId": _refId, @"code": @([error code]), @"details": [error debugDescription], @"message": [error localizedDescription], @"description": [error description]}]);
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}];
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}
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- (void)removeEventHandler:(NSNumber *)listenerId eventName:(NSString *)eventName {
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FIRDatabaseHandle handle = (FIRDatabaseHandle) [_listeners[listenerId] integerValue];
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if (handle) {
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[_listeners removeObjectForKey:listenerId];
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[_query removeObserverWithHandle:handle];
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}
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}
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+ (NSDictionary *)snapshotToDict:(FIRDataSnapshot *)snapshot {
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NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
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[dict setValue:snapshot.key forKey:@"key"];
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NSDictionary *val = snapshot.value;
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dict[@"value"] = val;
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// Snapshot ordering
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NSMutableArray *childKeys = [NSMutableArray array];
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if (snapshot.childrenCount > 0) {
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// Since JS does not respect object ordering of keys
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// we keep a list of the keys and their ordering
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// in the snapshot event
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NSEnumerator *children = [snapshot children];
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FIRDataSnapshot *child;
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while (child = [children nextObject]) {
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[childKeys addObject:child.key];
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}
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}
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dict[@"childKeys"] = childKeys;
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[dict setValue:@(snapshot.hasChildren) forKey:@"hasChildren"];
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[dict setValue:@(snapshot.exists) forKey:@"exists"];
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[dict setValue:@(snapshot.childrenCount) forKey:@"childrenCount"];
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[dict setValue:snapshot.priority forKey:@"priority"];
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return dict;
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}
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- (NSDictionary *)getAndSendDatabaseError:(NSError *)error listenerId:(NSNumber *)listenerId {
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NSDictionary *event = @{@"eventName": DATABASE_ERROR_EVENT, @"path": _path, @"refId": _refId, @"listenerId": listenerId, @"code": @([error code]), @"details": [error debugDescription], @"message": [error localizedDescription], @"description": [error description]};
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@try {
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[_emitter sendEventWithName:DATABASE_ERROR_EVENT body:event];
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} @catch (NSException *err) {
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NSLog(@"An error occurred in getAndSendDatabaseError: %@", [err debugDescription]);
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NSLog(@"Tried to send: %@ with %@", DATABASE_ERROR_EVENT, event);
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}
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return event;
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}
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- (void)sendJSEvent:(NSString *)type title:(NSString *)title props:(NSDictionary *)props {
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@try {
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[_emitter sendEventWithName:type body:@{@"eventName": title, @"body": props}];
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} @catch (NSException *err) {
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NSLog(@"An error occurred in sendJSEvent: %@", [err debugDescription]);
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NSLog(@"Tried to send: %@ with %@", title, props);
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}
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}
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- (FIRDatabaseQuery *)buildQueryAtPathWithModifiers:(FIRDatabase *)database path:(NSString *)path modifiers:(NSArray *)modifiers {
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FIRDatabaseQuery *query = [[database reference] child:path];
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for (NSDictionary *modifier in modifiers) {
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NSString *type = [modifier valueForKey:@"type"];
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NSString *name = [modifier valueForKey:@"name"];
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if ([type isEqualToString:@"orderBy"]) {
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if ([name isEqualToString:@"orderByKey"]) {
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query = [query queryOrderedByKey];
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} else if ([name isEqualToString:@"orderByPriority"]) {
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query = [query queryOrderedByPriority];
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} else if ([name isEqualToString:@"orderByValue"]) {
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query = [query queryOrderedByValue];
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} else if ([name isEqualToString:@"orderByChild"]) {
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NSString *key = [modifier valueForKey:@"key"];
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query = [query queryOrderedByChild:key];
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}
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} else if ([type isEqualToString:@"limit"]) {
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int limit = [[modifier valueForKey:@"limit"] integerValue];
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if ([name isEqualToString:@"limitToLast"]) {
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query = [query queryLimitedToLast:limit];
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} else if ([name isEqualToString:@"limitToFirst"]) {
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query = [query queryLimitedToFirst:limit];
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}
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} else if ([type isEqualToString:@"filter"]) {
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NSString *valueType = [modifier valueForKey:@"valueType"];
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NSString *key = [modifier valueForKey:@"key"];
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id value = [self getIdValue:[modifier valueForKey:@"value"] type:valueType];
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if ([name isEqualToString:@"equalTo"]) {
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if (key != nil) {
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query = [query queryEqualToValue:value childKey:key];
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} else {
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query = [query queryEqualToValue:value];
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}
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} else if ([name isEqualToString:@"endAt"]) {
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if (key != nil) {
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query = [query queryEndingAtValue:value childKey:key];
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} else {
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query = [query queryEndingAtValue:value];
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}
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} else if ([name isEqualToString:@"startAt"]) {
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if (key != nil) {
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query = [query queryStartingAtValue:value childKey:key];
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} else {
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query = [query queryStartingAtValue:value];
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}
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}
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}
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}
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return query;
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}
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- (id)getIdValue:(NSString *)value type:(NSString *)type {
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if ([type isEqualToString:@"number"]) {
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return @(value.doubleValue);
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} else if ([type isEqualToString:@"boolean"]) {
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return @(value.boolValue);
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} else {
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return value;
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}
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}
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- (BOOL)hasListeners {
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return [[_listeners allKeys] count] > 0;
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}
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- (int)eventTypeFromName:(NSString *)name {
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int eventType = FIRDataEventTypeValue;
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if ([name isEqualToString:DATABASE_VALUE_EVENT]) {
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eventType = FIRDataEventTypeValue;
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} else if ([name isEqualToString:DATABASE_CHILD_ADDED_EVENT]) {
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eventType = FIRDataEventTypeChildAdded;
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} else if ([name isEqualToString:DATABASE_CHILD_MODIFIED_EVENT]) {
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eventType = FIRDataEventTypeChildChanged;
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} else if ([name isEqualToString:DATABASE_CHILD_REMOVED_EVENT]) {
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eventType = FIRDataEventTypeChildRemoved;
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} else if ([name isEqualToString:DATABASE_CHILD_MOVED_EVENT]) {
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eventType = FIRDataEventTypeChildMoved;
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}
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return eventType;
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}
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@end
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#import "RNFirebaseDatabaseReference.h"
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#import "RNFirebaseEvents.h"
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#import "Firebase.h"
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@implementation RNFirebaseDatabase
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RCT_EXPORT_MODULE();
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@ -269,7 +72,7 @@ RCT_EXPORT_METHOD(startTransaction:
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if (databaseError != nil) {
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[self sendTransactionEvent:DATABASE_TRANSACTION_EVENT body:@{@"id": identifier, @"type": @"error", @"code": @([databaseError code]), @"message": [databaseError description]}];
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} else {
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[self sendTransactionEvent:DATABASE_TRANSACTION_EVENT body:@{@"id": identifier, @"type": @"complete", @"committed": @(committed), @"snapshot": [RNFirebaseDBReference snapshotToDict:snapshot],}];
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[self sendTransactionEvent:DATABASE_TRANSACTION_EVENT body:@{@"id": identifier, @"type": @"complete", @"committed": @(committed), @"snapshot": [RNFirebaseDatabaseReference snapshotToDict:snapshot],}];
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}
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}
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withLocalEvents:
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@ -404,7 +207,7 @@ RCT_EXPORT_METHOD(on:
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listenerId:(nonnull NSNumber *) listenerId
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name:(NSString *) eventName
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callback:(RCTResponseSenderBlock) callback) {
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RNFirebaseDBReference *ref = [self getDBHandle:refId path:path modifiers:modifiers];
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RNFirebaseDatabaseReference *ref = [self getDBHandle:refId path:path modifiers:modifiers];
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[ref addEventHandler:listenerId eventName:eventName];
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callback(@[[NSNull null], @{@"status": @"success", @"refId": refId, @"handle": path}]);
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}
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@ -416,7 +219,7 @@ RCT_EXPORT_METHOD(once:
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modifiers:(NSArray *) modifiers
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eventName:(NSString *) eventName
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callback:(RCTResponseSenderBlock) callback) {
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RNFirebaseDBReference *ref = [self getDBHandle:refId path:path modifiers:modifiers];
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RNFirebaseDatabaseReference *ref = [self getDBHandle:refId path:path modifiers:modifiers];
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[ref addSingleEventHandler:eventName callback:callback];
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}
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@ -425,7 +228,7 @@ RCT_EXPORT_METHOD(off:
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NSNumber *) refId
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listeners:(NSArray *) listeners
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callback:(RCTResponseSenderBlock) callback) {
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RNFirebaseDBReference *ref = _dbReferences[refId];
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RNFirebaseDatabaseReference *ref = _dbReferences[refId];
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if (ref != nil) {
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for (NSDictionary *listener in listeners) {
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NSNumber *listenerId = [listener valueForKey:@"listenerId"];
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@ -494,11 +297,11 @@ RCT_EXPORT_METHOD(goOnline) {
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}
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}
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- (RNFirebaseDBReference *)getDBHandle:(NSNumber *)refId path:(NSString *)path modifiers:(NSArray *)modifiers {
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RNFirebaseDBReference *ref = _dbReferences[refId];
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- (RNFirebaseDatabaseReference *)getDBHandle:(NSNumber *)refId path:(NSString *)path modifiers:(NSArray *)modifiers {
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RNFirebaseDatabaseReference *ref = _dbReferences[refId];
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if (ref == nil) {
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ref = [[RNFirebaseDBReference alloc] initWithPathAndModifiers:self database:[FIRDatabase database] refId:refId path:path modifiers:modifiers];
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ref = [[RNFirebaseDatabaseReference alloc] initWithPathAndModifiers:self database:[FIRDatabase database] refId:refId path:path modifiers:modifiers];
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_dbReferences[refId] = ref;
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}
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return ref;
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@ -0,0 +1,29 @@
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#ifndef RNFirebaseDatabaseReference_h
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#define RNFirebaseDatabaseReference_h
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#if __has_include(<FirebaseDatabase/FIRDatabase.h>)
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#import <React/RCTEventEmitter.h>
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#import "Firebase.h"
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@interface RNFirebaseDatabaseReference : NSObject
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@property RCTEventEmitter *emitter;
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@property FIRDatabaseQuery *query;
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@property NSNumber *refId;
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@property NSString *path;
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@property NSMutableDictionary *listeners;
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- (id)initWithPathAndModifiers:(RCTEventEmitter *)emitter database:(FIRDatabase *)database refId:(NSNumber *)refId path:(NSString *)path modifiers:(NSArray *)modifiers;
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- (void)addEventHandler:(NSNumber *)listenerId eventName:(NSString *)eventName;
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- (void)addSingleEventHandler:(NSString *)eventName callback:(RCTResponseSenderBlock)callback;
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- (void)removeEventHandler:(NSNumber *)listenerId eventName:(NSString *)eventName;
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- (BOOL)hasListeners;
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+ (NSDictionary *)snapshotToDict:(FIRDataSnapshot *)snapshot;
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@end
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#else
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@interface RNFirebaseDatabaseReference : NSObject
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@end
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#endif
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#endif
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@ -0,0 +1,195 @@
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#import "RNFirebaseDatabaseReference.h"
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#if __has_include(<FirebaseDatabase/FIRDatabase.h>)
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#import "RNFirebaseEvents.h"
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@implementation RNFirebaseDatabaseReference
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- (id)initWithPathAndModifiers:(RCTEventEmitter *)emitter database:(FIRDatabase *)database refId:(NSNumber *)refId path:(NSString *)path modifiers:(NSArray *)modifiers {
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self = [super init];
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if (self) {
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_emitter = emitter;
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_refId = refId;
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_path = path;
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_query = [self buildQueryAtPathWithModifiers:database path:path modifiers:modifiers];
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_listeners = [[NSMutableDictionary alloc] init];
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}
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return self;
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}
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- (void)addEventHandler:(NSNumber *)listenerId eventName:(NSString *)eventName {
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if (!_listeners[listenerId]) {
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id andPreviousSiblingKeyWithBlock = ^(FIRDataSnapshot *_Nonnull snapshot, NSString *_Nullable previousChildName) {
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NSDictionary *props = [RNFirebaseDatabaseReference snapshotToDict:snapshot];
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[self sendJSEvent:DATABASE_DATA_EVENT title:eventName props:@{@"eventName": eventName, @"refId": _refId, @"listenerId": listenerId, @"path": _path, @"snapshot": props, @"previousChildName": previousChildName != nil ? previousChildName : [NSNull null]}];
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};
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id errorBlock = ^(NSError *_Nonnull error) {
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NSLog(@"Error onDBEvent: %@", [error debugDescription]);
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[self removeEventHandler:listenerId eventName:eventName];
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[self getAndSendDatabaseError:error listenerId:listenerId];
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};
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int eventType = [self eventTypeFromName:eventName];
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FIRDatabaseHandle handle = [_query observeEventType:eventType andPreviousSiblingKeyWithBlock:andPreviousSiblingKeyWithBlock withCancelBlock:errorBlock];
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_listeners[listenerId] = @(handle);
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} else {
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NSLog(@"Warning Trying to add duplicate listener for refId: %@ listenerId: %@", _refId, listenerId);
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}
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}
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- (void)addSingleEventHandler:(NSString *)eventName callback:(RCTResponseSenderBlock)callback {
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FIRDataEventType firDataEventType = (FIRDataEventType)[self eventTypeFromName:eventName];
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[_query observeSingleEventOfType:firDataEventType andPreviousSiblingKeyWithBlock:^(FIRDataSnapshot *_Nonnull snapshot, NSString *_Nullable previousChildName) {
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NSDictionary *props = [RNFirebaseDatabaseReference snapshotToDict:snapshot];
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callback(@[[NSNull null], @{@"eventName": eventName, @"path": _path, @"refId": _refId, @"snapshot": props, @"previousChildName": previousChildName != nil ? previousChildName : [NSNull null]}]);
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} withCancelBlock:^(NSError *_Nonnull error) {
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NSLog(@"Error onDBEventOnce: %@", [error debugDescription]);
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callback(@[@{@"eventName": DATABASE_ERROR_EVENT, @"path": _path, @"refId": _refId, @"code": @([error code]), @"details": [error debugDescription], @"message": [error localizedDescription], @"description": [error description]}]);
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}];
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}
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- (void)removeEventHandler:(NSNumber *)listenerId eventName:(NSString *)eventName {
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FIRDatabaseHandle handle = (FIRDatabaseHandle) [_listeners[listenerId] integerValue];
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if (handle) {
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[_listeners removeObjectForKey:listenerId];
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[_query removeObserverWithHandle:handle];
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}
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}
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+ (NSDictionary *)snapshotToDict:(FIRDataSnapshot *)snapshot {
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NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
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[dict setValue:snapshot.key forKey:@"key"];
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NSDictionary *val = snapshot.value;
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dict[@"value"] = val;
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// Snapshot ordering
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NSMutableArray *childKeys = [NSMutableArray array];
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if (snapshot.childrenCount > 0) {
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// Since JS does not respect object ordering of keys
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// we keep a list of the keys and their ordering
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// in the snapshot event
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NSEnumerator *children = [snapshot children];
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FIRDataSnapshot *child;
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while (child = [children nextObject]) {
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[childKeys addObject:child.key];
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}
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}
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dict[@"childKeys"] = childKeys;
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[dict setValue:@(snapshot.hasChildren) forKey:@"hasChildren"];
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[dict setValue:@(snapshot.exists) forKey:@"exists"];
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[dict setValue:@(snapshot.childrenCount) forKey:@"childrenCount"];
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[dict setValue:snapshot.priority forKey:@"priority"];
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return dict;
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}
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- (NSDictionary *)getAndSendDatabaseError:(NSError *)error listenerId:(NSNumber *)listenerId {
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NSDictionary *event = @{@"eventName": DATABASE_ERROR_EVENT, @"path": _path, @"refId": _refId, @"listenerId": listenerId, @"code": @([error code]), @"details": [error debugDescription], @"message": [error localizedDescription], @"description": [error description]};
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@try {
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[_emitter sendEventWithName:DATABASE_ERROR_EVENT body:event];
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} @catch (NSException *err) {
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NSLog(@"An error occurred in getAndSendDatabaseError: %@", [err debugDescription]);
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NSLog(@"Tried to send: %@ with %@", DATABASE_ERROR_EVENT, event);
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}
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return event;
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}
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- (void)sendJSEvent:(NSString *)type title:(NSString *)title props:(NSDictionary *)props {
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@try {
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[_emitter sendEventWithName:type body:@{@"eventName": title, @"body": props}];
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} @catch (NSException *err) {
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NSLog(@"An error occurred in sendJSEvent: %@", [err debugDescription]);
|
||||
NSLog(@"Tried to send: %@ with %@", title, props);
|
||||
}
|
||||
}
|
||||
|
||||
- (FIRDatabaseQuery *)buildQueryAtPathWithModifiers:(FIRDatabase *)database path:(NSString *)path modifiers:(NSArray *)modifiers {
|
||||
FIRDatabaseQuery *query = [[database reference] child:path];
|
||||
|
||||
for (NSDictionary *modifier in modifiers) {
|
||||
NSString *type = [modifier valueForKey:@"type"];
|
||||
NSString *name = [modifier valueForKey:@"name"];
|
||||
if ([type isEqualToString:@"orderBy"]) {
|
||||
if ([name isEqualToString:@"orderByKey"]) {
|
||||
query = [query queryOrderedByKey];
|
||||
} else if ([name isEqualToString:@"orderByPriority"]) {
|
||||
query = [query queryOrderedByPriority];
|
||||
} else if ([name isEqualToString:@"orderByValue"]) {
|
||||
query = [query queryOrderedByValue];
|
||||
} else if ([name isEqualToString:@"orderByChild"]) {
|
||||
NSString *key = [modifier valueForKey:@"key"];
|
||||
query = [query queryOrderedByChild:key];
|
||||
}
|
||||
} else if ([type isEqualToString:@"limit"]) {
|
||||
int limit = [[modifier valueForKey:@"limit"] integerValue];
|
||||
if ([name isEqualToString:@"limitToLast"]) {
|
||||
query = [query queryLimitedToLast:limit];
|
||||
} else if ([name isEqualToString:@"limitToFirst"]) {
|
||||
query = [query queryLimitedToFirst:limit];
|
||||
}
|
||||
} else if ([type isEqualToString:@"filter"]) {
|
||||
NSString *valueType = [modifier valueForKey:@"valueType"];
|
||||
NSString *key = [modifier valueForKey:@"key"];
|
||||
id value = [self getIdValue:[modifier valueForKey:@"value"] type:valueType];
|
||||
if ([name isEqualToString:@"equalTo"]) {
|
||||
if (key != nil) {
|
||||
query = [query queryEqualToValue:value childKey:key];
|
||||
} else {
|
||||
query = [query queryEqualToValue:value];
|
||||
}
|
||||
} else if ([name isEqualToString:@"endAt"]) {
|
||||
if (key != nil) {
|
||||
query = [query queryEndingAtValue:value childKey:key];
|
||||
} else {
|
||||
query = [query queryEndingAtValue:value];
|
||||
}
|
||||
} else if ([name isEqualToString:@"startAt"]) {
|
||||
if (key != nil) {
|
||||
query = [query queryStartingAtValue:value childKey:key];
|
||||
} else {
|
||||
query = [query queryStartingAtValue:value];
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return query;
|
||||
}
|
||||
|
||||
- (id)getIdValue:(NSString *)value type:(NSString *)type {
|
||||
if ([type isEqualToString:@"number"]) {
|
||||
return @(value.doubleValue);
|
||||
} else if ([type isEqualToString:@"boolean"]) {
|
||||
return @(value.boolValue);
|
||||
} else {
|
||||
return value;
|
||||
}
|
||||
}
|
||||
|
||||
- (BOOL)hasListeners {
|
||||
return [[_listeners allKeys] count] > 0;
|
||||
}
|
||||
|
||||
- (int)eventTypeFromName:(NSString *)name {
|
||||
int eventType = FIRDataEventTypeValue;
|
||||
|
||||
if ([name isEqualToString:DATABASE_VALUE_EVENT]) {
|
||||
eventType = FIRDataEventTypeValue;
|
||||
} else if ([name isEqualToString:DATABASE_CHILD_ADDED_EVENT]) {
|
||||
eventType = FIRDataEventTypeChildAdded;
|
||||
} else if ([name isEqualToString:DATABASE_CHILD_MODIFIED_EVENT]) {
|
||||
eventType = FIRDataEventTypeChildChanged;
|
||||
} else if ([name isEqualToString:DATABASE_CHILD_REMOVED_EVENT]) {
|
||||
eventType = FIRDataEventTypeChildRemoved;
|
||||
} else if ([name isEqualToString:DATABASE_CHILD_MOVED_EVENT]) {
|
||||
eventType = FIRDataEventTypeChildMoved;
|
||||
}
|
||||
return eventType;
|
||||
}
|
||||
|
||||
@end
|
||||
|
||||
#else
|
||||
@implementation RNFirebaseDatabase
|
||||
@end
|
||||
#endif
|
||||
Loading…
Reference in New Issue