GRPCWrappedCall.h

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#import <Foundation/Foundation.h>
#include <grpc/grpc.h>
#import "GRPCChannel.h"

typedef void(^GRPCCompletionHandler)(NSDictionary *);

@protocol GRPCOp <NSObject>

- (void)getOp:(grpc_op *)op;

- (void)finish;

@end

@interface GRPCOpSendMetadata : NSObject <GRPCOp>

- (instancetype)initWithMetadata:(NSDictionary *)metadata
                         handler:(void(^)(void))handler NS_DESIGNATED_INITIALIZER;

@end

@interface GRPCOpSendMessage : NSObject <GRPCOp>

- (instancetype)initWithMessage:(NSData *)message
                        handler:(void(^)(void))handler NS_DESIGNATED_INITIALIZER;

@end

@interface GRPCOpSendClose : NSObject <GRPCOp>

- (instancetype)initWithHandler:(void(^)(void))handler NS_DESIGNATED_INITIALIZER;

@end

@interface GRPCOpRecvMetadata : NSObject <GRPCOp>

- (instancetype)initWithHandler:(void(^)(NSDictionary *))handler NS_DESIGNATED_INITIALIZER;

@end

@interface GRPCOpRecvMessage : NSObject <GRPCOp>

- (instancetype)initWithHandler:(void(^)(grpc_byte_buffer *))handler NS_DESIGNATED_INITIALIZER;

@end

@interface GRPCOpRecvStatus : NSObject <GRPCOp>

- (instancetype)initWithHandler:(void(^)(NSError *))handler NS_DESIGNATED_INITIALIZER;

@end

@interface GRPCWrappedCall : NSObject

- (instancetype)initWithChannel:(GRPCChannel *)channel
                         method:(NSString *)method
                           host:(NSString *)host NS_DESIGNATED_INITIALIZER;

- (void)startBatchWithOperations:(NSArray *)ops errorHandler:(void(^)())errorHandler;

- (void)startBatchWithOperations:(NSArray *)ops;

- (void)cancel;
@end