#ifndef NVIM_OS_MSGPACK_RPC_H
#define NVIM_OS_MSGPACK_RPC_H

#include <stdint.h>
#include <stdbool.h>

#include <msgpack.h>

#include "nvim/api/private/defs.h"

/// Validates the basic structure of the msgpack-rpc call and fills `res`
/// with the basic response structure.
///
/// @param req The parsed request object
/// @param res A packer that contains the response
void msgpack_rpc_call(msgpack_object *req, msgpack_packer *res);

/// Dispatches to the actual API function after basic payload validation by
/// `msgpack_rpc_call`. It is responsible for validating/converting arguments
/// to C types, and converting the return value back to msgpack types.
/// The implementation is generated at compile time with metadata extracted
/// from the api/*.h headers,
///
/// @param req The parsed request object
/// @param res A packer that contains the response
void msgpack_rpc_dispatch(msgpack_object *req, msgpack_packer *res);

/// Finishes the msgpack-rpc call with an error message.
///
/// @param msg The error message
/// @param res A packer that contains the response
void msgpack_rpc_error(char *msg, msgpack_packer *res);

/// Functions for validating and converting from msgpack types to C types.
/// These are used by `msgpack_rpc_dispatch` to validate and convert each
/// argument.
///
/// @param obj The object to convert
/// @param[out] arg A pointer to the avalue
/// @return true if the convertion succeeded, false otherwise
bool msgpack_rpc_to_boolean(msgpack_object *obj, Boolean *arg);
bool msgpack_rpc_to_integer(msgpack_object *obj, Integer *arg);
bool msgpack_rpc_to_float(msgpack_object *obj, Float *arg);
bool msgpack_rpc_to_position(msgpack_object *obj, Position *arg);
bool msgpack_rpc_to_string(msgpack_object *obj, String *arg);
bool msgpack_rpc_to_buffer(msgpack_object *obj, Buffer *arg);
bool msgpack_rpc_to_window(msgpack_object *obj, Window *arg);
bool msgpack_rpc_to_tabpage(msgpack_object *obj, Tabpage *arg);
bool msgpack_rpc_to_object(msgpack_object *obj, Object *arg);
bool msgpack_rpc_to_stringarray(msgpack_object *obj, StringArray *arg);
bool msgpack_rpc_to_array(msgpack_object *obj, Array *arg);
bool msgpack_rpc_to_dictionary(msgpack_object *obj, Dictionary *arg);

/// Functions for converting from C types to msgpack types.
/// These are used by `msgpack_rpc_dispatch` to convert return values
/// from the API
///
/// @param result A pointer to the result
/// @param res A packer that contains the response
void msgpack_rpc_from_boolean(Boolean result, msgpack_packer *res);
void msgpack_rpc_from_integer(Integer result, msgpack_packer *res);
void msgpack_rpc_from_float(Float result, msgpack_packer *res);
void msgpack_rpc_from_position(Position result, msgpack_packer *res);
void msgpack_rpc_from_string(String result, msgpack_packer *res);
void msgpack_rpc_from_buffer(Buffer result, msgpack_packer *res);
void msgpack_rpc_from_window(Window result, msgpack_packer *res);
void msgpack_rpc_from_tabpage(Tabpage result, msgpack_packer *res);
void msgpack_rpc_from_object(Object result, msgpack_packer *res);
void msgpack_rpc_from_stringarray(StringArray result, msgpack_packer *res);
void msgpack_rpc_from_array(Array result, msgpack_packer *res);
void msgpack_rpc_from_dictionary(Dictionary result, msgpack_packer *res);

/// Helpers for initializing types that may be freed later
#define msgpack_rpc_init_boolean
#define msgpack_rpc_init_integer
#define msgpack_rpc_init_float
#define msgpack_rpc_init_position
#define msgpack_rpc_init_string
#define msgpack_rpc_init_buffer
#define msgpack_rpc_init_window
#define msgpack_rpc_init_tabpage
#define msgpack_rpc_init_object = {.type = kObjectTypeNil}
#define msgpack_rpc_init_stringarray = {.items = NULL, .size = 0}
#define msgpack_rpc_init_array = {.items = NULL, .size = 0}
#define msgpack_rpc_init_dictionary = {.items = NULL, .size = 0}

/// Helpers for freeing arguments/return value
///
/// @param value The value to be freed
#define msgpack_rpc_free_boolean(value)
#define msgpack_rpc_free_integer(value)
#define msgpack_rpc_free_float(value)
#define msgpack_rpc_free_position(value)
// Strings are not copied from msgpack and so don't need to be freed(they
// probably "live" in the msgpack streaming buffer)
#define msgpack_rpc_free_string(value)
#define msgpack_rpc_free_buffer(value)
#define msgpack_rpc_free_window(value)
#define msgpack_rpc_free_tabpage(value)
void msgpack_rpc_free_object(Object value);
void msgpack_rpc_free_stringarray(StringArray value);
void msgpack_rpc_free_array(Array value);
void msgpack_rpc_free_dictionary(Dictionary value);


#endif  // NVIM_OS_MSGPACK_RPC_H