// This source code is dual-licensed under the Mozilla Public License ("MPL"),
// version 1.1 and the Apache License ("ASL"), version 2.0.
//
// The ASL v2.0:
//
// ---------------------------------------------------------------------------
// Copyright 2016 Pivotal Software, Inc.
//
// 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.
// ---------------------------------------------------------------------------
//
// The MPL v1.1:
//
// ---------------------------------------------------------------------------
// The contents of this file are subject to the Mozilla Public License
// Version 1.1 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// https://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
// License for the specific language governing rights and limitations
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// The Original Code is RabbitMQ
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// The Initial Developer of the Original Code is Pivotal Software, Inc.
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// of the Apache Standard license (the "ASL License"), in which case the
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#import "RMQChannel.h"
#import "RMQErrors.h"
#import "RMQFramesetValidator.h"

@interface RMQFramesetValidator ()
@property (nonatomic, readwrite) RMQFrameset *lastFrameset;
@property (nonatomic, readwrite) RMQFramesetValidationResult *result;
@end

@implementation RMQFramesetValidator

- (instancetype)init {
    self = [super init];
    if (self) {
        self.lastFrameset = nil;
    }
    return self;
}

- (RMQFramesetValidationResult *)expect:(Class)methodClass {
    RMQFramesetValidationResult *result;
    if (![self.lastFrameset.method isKindOfClass:methodClass]) {
        NSString *msg = [NSString stringWithFormat:@"Expected %@, got %@.", methodClass, [self.lastFrameset.method class]];
        NSError *error = [NSError errorWithDomain:RMQErrorDomain
                                             code:RMQErrorChannelIncorrectSyncMethod
                                         userInfo:@{NSLocalizedDescriptionKey: msg}];
        result = [[RMQFramesetValidationResult alloc] initWithFrameset:self.lastFrameset error:error];
    } else {
        result = [[RMQFramesetValidationResult alloc] initWithFrameset:self.lastFrameset error:nil];
    }
    return result;
}

- (void)fulfill:(RMQFrameset *)frameset {
    self.lastFrameset = frameset;
}

@end