/*
 * 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 "FirebaseDatabase/Sources/Core/Utilities/FPath.h"
#import "FirebaseDatabase/Sources/Core/Utilities/FTreeNode.h"
#import <Foundation/Foundation.h>

@interface FTree : NSObject

- (id)init;
- (id)initWithName:(NSString *)aName
        withParent:(FTree *)aParent
          withNode:(FTreeNode *)aNode;

- (FTree *)subTree:(FPath *)path;
- (id)getValue;
- (void)setValue:(id)value;
- (void)clear;
- (BOOL)hasChildren;
- (BOOL)isEmpty;
- (void)forEachChildMutationSafe:(void (^)(FTree *))action;
- (void)forEachChild:(void (^)(FTree *))action;
- (void)forEachDescendant:(void (^)(FTree *))action;
- (void)forEachDescendant:(void (^)(FTree *))action
              includeSelf:(BOOL)incSelf
            childrenFirst:(BOOL)childFirst;
- (BOOL)forEachAncestor:(BOOL (^)(FTree *))action;
- (BOOL)forEachAncestor:(BOOL (^)(FTree *))action includeSelf:(BOOL)incSelf;
- (void)forEachImmediateDescendantWithValue:(void (^)(FTree *))action;
- (BOOL)valueExistsAtOrAbove:(FPath *)path;
- (FPath *)path;
- (void)updateParents;
- (void)updateChild:(NSString *)childName withNode:(FTree *)child;

@property(nonatomic, strong) NSString *name;
@property(nonatomic, strong) FTree *parent;
@property(nonatomic, strong) FTreeNode *node;

@end