#ifndef SRC_NODE_WASI_H_

#define SRC_NODE_WASI_H_

#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#include "base_object.h"

#include "node_mem.h"

#include "uvwasi.h"

namespace node {

namespace wasi {

class WASI : public BaseObject,

             public mem::NgLibMemoryManager<WASI, uvwasi_mem_t> {

 public:

  WASI(Environment* env,

       v8::Local<v8::Object> object,

       uvwasi_options_t* options);

  static void New(const v8::FunctionCallbackInfo<v8::Value>& args);

  void MemoryInfo(MemoryTracker* tracker) const override;

  static void ArgsGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void ArgsSizesGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void ClockResGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void ClockTimeGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void EnvironGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void EnvironSizesGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdAdvise(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdAllocate(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdClose(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdDatasync(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdFdstatGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdFdstatSetFlags(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdFdstatSetRights(

    const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdFilestatGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdFilestatSetSize(

    const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdFilestatSetTimes(

    const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdPread(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdPrestatGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdPrestatDirName(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdPwrite(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdRead(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdReaddir(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdRenumber(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdSeek(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdSync(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdTell(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void FdWrite(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathCreateDirectory(

    const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathFilestatGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathFilestatSetTimes(

    const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathLink(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathOpen(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathReadlink(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathRemoveDirectory(

    const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathRename(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathSymlink(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PathUnlinkFile(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void PollOneoff(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void ProcExit(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void ProcRaise(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void RandomGet(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void SchedYield(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void SockRecv(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void SockSend(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void SockShutdown(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void _SetMemory(const v8::FunctionCallbackInfo<v8::Value>& args);

  // Implementation for mem::NgLibMemoryManager

  void CheckAllocatedSize(size_t previous_size) const;

  void IncreaseAllocatedSize(size_t size);

  void DecreaseAllocatedSize(size_t size);

 private:

  ~WASI() override;

  inline void readUInt8(char* memory, uint8_t* value, uint32_t offset);

  inline void readUInt16(char* memory, uint16_t* value, uint32_t offset);

  inline void readUInt32(char* memory, uint32_t* value, uint32_t offset);

  inline void readUInt64(char* memory, uint64_t* value, uint32_t offset);

  inline void writeUInt8(char* memory, uint8_t value, uint32_t offset);

  inline void writeUInt16(char* memory, uint16_t value, uint32_t offset);

  inline void writeUInt32(char* memory, uint32_t value, uint32_t offset);

  inline void writeUInt64(char* memory, uint64_t value, uint32_t offset);

  uvwasi_errno_t backingStore(char** store, size_t* byte_length);

  uvwasi_t uvw_;

  v8::Global<v8::WasmMemoryObject> memory_;

  uvwasi_mem_t alloc_info_;

  size_t current_uvwasi_memory_ = 0;

};

}  // namespace wasi

}  // namespace node

#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#endif  // SRC_NODE_WASI_H_