#ifndef CKB_C_STDLIB_CKB_SYSCALL_APIS_H_
#define CKB_C_STDLIB_CKB_SYSCALL_APIS_H_

/*
 * Syscall related APIs that will be shared and used in all CKB
 * smart contract environments
 */

#include <stddef.h>
#include <stdint.h>

int ckb_exit(int8_t code);
int ckb_load_tx_hash(void* addr, uint64_t* len, size_t offset);
int ckb_load_transaction(void* addr, uint64_t* len, size_t offset);
int ckb_load_script_hash(void* addr, uint64_t* len, size_t offset);
int ckb_load_script(void* addr, uint64_t* len, size_t offset);
int ckb_debug(const char* s);

int ckb_load_cell(void* addr, uint64_t* len, size_t offset, size_t index,
                  size_t source);
int ckb_load_input(void* addr, uint64_t* len, size_t offset, size_t index,
                   size_t source);
int ckb_load_header(void* addr, uint64_t* len, size_t offset, size_t index,
                    size_t source);
int ckb_load_witness(void* addr, uint64_t* len, size_t offset, size_t index,
                     size_t source);
int ckb_load_cell_by_field(void* addr, uint64_t* len, size_t offset,
                           size_t index, size_t source, size_t field);
int ckb_load_header_by_field(void* addr, uint64_t* len, size_t offset,
                             size_t index, size_t source, size_t field);
int ckb_load_input_by_field(void* addr, uint64_t* len, size_t offset,
                            size_t index, size_t source, size_t field);
int ckb_load_cell_data(void* addr, uint64_t* len, size_t offset, size_t index,
                       size_t source);
int ckb_vm_version();
uint64_t ckb_current_cycles();
int ckb_exec_cell(const uint8_t* code_hash, uint8_t hash_type, uint32_t offset,
                  uint32_t length, int argc, const char* argv[]);

int ckb_dlopen2(const uint8_t* dep_cell_hash, uint8_t hash_type,
                uint8_t* aligned_addr, size_t aligned_size, void** handle,
                size_t* consumed_size);
void* ckb_dlsym(void* handle, const char* symbol);

typedef struct spawn_args_t {
  size_t argc;
  const char** argv;
  /* Spawned VM process ID */
  uint64_t* process_id;
  /* A list of file descriptor, 0 indicates end of array */
  const uint64_t* inherited_fds;
} spawn_args_t;

int ckb_spawn(size_t index, size_t source, size_t place, size_t bounds,
              spawn_args_t* spawn_args);

int ckb_spawn_cell(const uint8_t* code_hash, uint8_t hash_type, uint32_t offset,
                   uint32_t length, spawn_args_t* spawn_args);

int ckb_wait(uint64_t pid, int8_t* exit_code);

uint64_t ckb_process_id();

int ckb_pipe(uint64_t fds[2]);

int ckb_read(uint64_t fd, void* buffer, size_t* length);

int ckb_write(uint64_t fd, const void* buffer, size_t* length);

int ckb_inherited_fds(uint64_t* fds, size_t* length);

int ckb_close(uint64_t fd);

int ckb_load_block_extension(void* addr, uint64_t* len, size_t offset,
                             size_t index, size_t source);

#endif /* CKB_C_STDLIB_CKB_SYSCALL_APIS_H_ */