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#ifndef GRPC_CORE_EXT_CLIENT_CHANNEL_PROXY_MAPPER_H
#define GRPC_CORE_EXT_CLIENT_CHANNEL_PROXY_MAPPER_H

#include <stdbool.h>

#include <grpc/impl/codegen/grpc_types.h>

#include "src/core/lib/iomgr/resolve_address.h"

typedef struct grpc_proxy_mapper grpc_proxy_mapper;

typedef struct {
  /// Determines the proxy address to use to contact \a address.
  /// If no proxy is needed, returns false.
  /// Otherwise, sets \a new_address, optionally sets \a new_args, and
  /// returns true.
  bool (*map)(grpc_exec_ctx* exec_ctx, grpc_proxy_mapper* mapper,
              const grpc_resolved_address* address,
              const grpc_channel_args* args,
              grpc_resolved_address** new_address,
              grpc_channel_args** new_args);
  /// Destroys \a mapper.
  void (*destroy)(grpc_proxy_mapper* mapper);
} grpc_proxy_mapper_vtable;

struct grpc_proxy_mapper {
  const grpc_proxy_mapper_vtable* vtable;
};

void grpc_proxy_mapper_init(const grpc_proxy_mapper_vtable* vtable,
                            grpc_proxy_mapper* mapper);

bool grpc_proxy_mapper_map(grpc_exec_ctx* exec_ctx, grpc_proxy_mapper* mapper,
                           const grpc_resolved_address* address,
                           const grpc_channel_args* args,
                           grpc_resolved_address** new_address,
                           grpc_channel_args** new_args);
void grpc_proxy_mapper_destroy(grpc_proxy_mapper* mapper);

#endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_PROXY_MAPPER_H */