#include "Core.h"
#if defined CC_BUILD_AMIGA

#include "_PlatformBase.h"
#include "Stream.h"
#include "ExtMath.h"
#include "SystemFonts.h"
#include "Funcs.h"
#include "Window.h"
#include "Utils.h"
#include "Errors.h"
#include "PackedCol.h"

#include <proto/dos.h>
#include <proto/exec.h>
#include <exec/libraries.h>
#include <exec/memory.h>
#include <exec/tasks.h>
#include <string.h>

const cc_result ReturnCode_FileShareViolation = 1000000000;
const cc_result ReturnCode_FileNotFound     = 1000000;
const cc_result ReturnCode_DirectoryExists  = 1000000;
const cc_result ReturnCode_SocketInProgess  = 1000000;
const cc_result ReturnCode_SocketWouldBlock = 1000000;
const cc_result ReturnCode_SocketDropped    = 1000000;

const char* Platform_AppNameSuffix = " Amiga";
cc_uint8 Platform_Flags = PLAT_FLAG_SINGLE_PROCESS;
cc_bool  Platform_ReadonlyFilesystem;

static const char __attribute__((used)) min_stack[] = "$STACK:102400";

/*########################################################################################################################*
*-----------------------------------------------------Main entrypoint-----------------------------------------------------*
*#########################################################################################################################*/
#include "main_impl.h"

int main(int argc, char** argv) {
	cc_result res;
	SetupProgram(argc, argv);

	do {
		res = RunProgram(argc, argv);
	} while (Window_Main.Exists);

	Window_Free();
	Process_Exit(res);
	return res;
}

/*########################################################################################################################*
*---------------------------------------------------------Memory----------------------------------------------------------*
*#########################################################################################################################*/
void* Mem_Set(void*  dst, cc_uint8 value,  unsigned numBytes) { return memset( dst, value, numBytes); }
void* Mem_Copy(void* dst, const void* src, unsigned numBytes) { return memcpy( dst, src,   numBytes); }
void* Mem_Move(void* dst, const void* src, unsigned numBytes) { return memmove(dst, src,   numBytes); }

void* Mem_TryAlloc(cc_uint32 numElems, cc_uint32 elemsSize) {
	cc_uint32 size = CalcMemSize(numElems, elemsSize);
	return size ? AllocVec(size, MEMF_ANY) : NULL;
}

void* Mem_TryAllocCleared(cc_uint32 numElems, cc_uint32 elemsSize) {
	cc_uint32 size = CalcMemSize(numElems, elemsSize);
	return size ? AllocVec(size, MEMF_ANY | MEMF_CLEAR) : NULL;
}

void* Mem_TryRealloc(void* mem, cc_uint32 numElems, cc_uint32 elemsSize) {
	return NULL; // TODO
}

void Mem_Free(void* mem) {
	if (mem) FreeVec(mem);
}


/*########################################################################################################################*
*------------------------------------------------------Logging/Time-------------------------------------------------------*
*#########################################################################################################################*/
void Platform_Log(const char* msg, int len) {
	Write(Output(), msg, len);
	Write(Output(), "\n", 1);
}

TimeMS DateTime_CurrentUTC(void) {
	ULONG secs, micro;
	CurrentTime(&secs, &micro);
	// TODO epoch adjustment
	return secs;
}

void DateTime_CurrentLocal(struct cc_datetime* t) {
	// TODO
}


/*########################################################################################################################*
*-------------------------------------------------------Crash handling----------------------------------------------------*
*#########################################################################################################################*/
void CrashHandler_Install(void) { }

void Process_Abort2(cc_result result, const char* raw_msg) {
	Logger_DoAbort(result, raw_msg, NULL);
}


/*########################################################################################################################*
*--------------------------------------------------------Stopwatch--------------------------------------------------------*
*#########################################################################################################################*/
#define US_PER_SEC 1000000ULL

cc_uint64 Stopwatch_Measure(void) {
	ULONG secs, micro;
	CurrentTime(&secs, &micro);
	return secs * US_PER_SEC + micro;
}

cc_uint64 Stopwatch_ElapsedMicroseconds(cc_uint64 beg, cc_uint64 end) {
	if (end < beg) return 0;
	return end - beg;
}


/*########################################################################################################################*
*-----------------------------------------------------Directory/File------------------------------------------------------*
*#########################################################################################################################*/
void Platform_EncodePath(cc_filepath* dst, const cc_string* path) {
	char* buf = dst->buffer;
	char* str = dst->buffer;
	
	// Amiga OS uses : to separate directories
	for (int i = 0; i < path->length; i++) 
	{
		char c = (char)path->buffer[i];
		if (c == '/') c = ':';
		*str++ = c;
	}
	*str = '\0';
	// TODO
}


void Directory_GetCachePath(cc_string* path) { }

cc_result Directory_Create(const cc_filepath* path) {
	return ERR_NOT_SUPPORTED; // TODO
}

int File_Exists(const cc_filepath* path) {
	return false; // TODO
}

cc_result Directory_Enum(const cc_string* dirPath, void* obj, Directory_EnumCallback callback) {
	return ERR_NOT_SUPPORTED; // TODO
}

cc_result File_Open(cc_file* file, const cc_filepath* path) {
	return ERR_NOT_SUPPORTED; // TODO
}

cc_result File_Create(cc_file* file, const cc_filepath* path) {
	return ERR_NOT_SUPPORTED; // TODO
}

cc_result File_OpenOrCreate(cc_file* file, const cc_filepath* path) {
	return ERR_NOT_SUPPORTED; // TODO
}

cc_result File_Read(cc_file file, void* data, cc_uint32 count, cc_uint32* bytesRead) {
	return ERR_NOT_SUPPORTED; // TODO
}

cc_result File_Write(cc_file file, const void* data, cc_uint32 count, cc_uint32* bytesWrote) {
	return ERR_NOT_SUPPORTED; // TODO
}

cc_result File_Close(cc_file file) {
	return ERR_NOT_SUPPORTED; // TODO
}

cc_result File_Seek(cc_file file, int offset, int seekType) {
	return ERR_NOT_SUPPORTED; // TODO
}

cc_result File_Position(cc_file file, cc_uint32* pos) {
	return ERR_NOT_SUPPORTED; // TODO
}

cc_result File_Length(cc_file file, cc_uint32* len) {
	return ERR_NOT_SUPPORTED; // TODO
}


/*########################################################################################################################*
*--------------------------------------------------------Threading--------------------------------------------------------*
*#########################################################################################################################*/
void Thread_Sleep(cc_uint32 milliseconds) {
	cc_uint32 ticks = milliseconds * 50 / 1000;
	// per documentation, Delay works in 50 ticks/second
	Delay(ticks);
}

void Thread_Run(void** handle, Thread_StartFunc func, int stackSize, const char* name) {
	*handle = NULL;
	// TODO
}

void Thread_Detach(void* handle) {
	// TODO
}

void Thread_Join(void* handle) {
	// TODO
}

void* Mutex_Create(const char* name) {
	return NULL;
}

void Mutex_Free(void* handle) {
	// TODO
}

void Mutex_Lock(void* handle) {
	// TODO
}

void Mutex_Unlock(void* handle) {
	// TODO
}

void* Waitable_Create(const char* name) {
	return NULL;
}

void Waitable_Free(void* handle) {
	// TODO
}

void Waitable_Signal(void* handle) {
	// TODO
}

void Waitable_Wait(void* handle) {
	// TODO
}

void Waitable_WaitFor(void* handle, cc_uint32 milliseconds) {
	// TODO
}


/*########################################################################################################################*
*---------------------------------------------------------Socket----------------------------------------------------------*
*#########################################################################################################################*/
cc_result Socket_ParseAddress(const cc_string* address, int port, cc_sockaddr* addrs, int* numValidAddrs) {
	return ERR_NOT_SUPPORTED;
}

cc_result Socket_Create(cc_socket* s, cc_sockaddr* addr, cc_bool nonblocking) {
	return ERR_NOT_SUPPORTED;
}

cc_result Socket_Connect(cc_socket s, cc_sockaddr* addr) {
	return ERR_NOT_SUPPORTED;
}

cc_result Socket_Read(cc_socket s, cc_uint8* data, cc_uint32 count, cc_uint32* modified) {
	return ERR_NOT_SUPPORTED;
}

cc_result Socket_Write(cc_socket s, const cc_uint8* data, cc_uint32 count, cc_uint32* modified) {
	return ERR_NOT_SUPPORTED;
}

void Socket_Close(cc_socket s) {

}

cc_result Socket_CheckReadable(cc_socket s, cc_bool* readable) {
	return ERR_NOT_SUPPORTED;
}

cc_result Socket_CheckWritable(cc_socket s, cc_bool* writable) {
	return ERR_NOT_SUPPORTED;
}


/*########################################################################################################################*
*-----------------------------------------------------Process/Module------------------------------------------------------*
*#########################################################################################################################*/
cc_bool Process_OpenSupported = false;
static char gameArgs[GAME_MAX_CMDARGS][STRING_SIZE];
static int gameNumArgs;

int Platform_GetCommandLineArgs(int argc, STRING_REF char** argv, cc_string* args) {
	int count = gameNumArgs;
	for (int i = 0; i < count; i++) 
	{
		args[i] = String_FromRawArray(gameArgs[i]);
	}
	
	// clear arguments so after game is closed, launcher is started
	gameNumArgs = 0;
	return count;
}

cc_result Platform_SetDefaultCurrentDirectory(int argc, char **argv) {
	return 0;
}

cc_result Process_StartGame2(const cc_string* args, int numArgs) {
	for (int i = 0; i < numArgs; i++) 
	{
		String_CopyToRawArray(gameArgs[i], &args[i]);
	}

	gameNumArgs = numArgs;
	return 0;
}

void Process_Exit(cc_result code) { 
	Exit(code);
    for(;;) { }
}

cc_result Process_StartOpen(const cc_string* args) {
	return ERR_NOT_SUPPORTED;
}


/*########################################################################################################################*
*--------------------------------------------------------Updater----------------------------------------------------------*
*#########################################################################################################################*/
cc_bool Updater_Supported = false;
cc_bool Updater_Clean(void) { return true; }

const struct UpdaterInfo Updater_Info = { "&eCompile latest source code to update", 0 };

cc_result Updater_Start(const char** action) {
	return ERR_NOT_SUPPORTED;
}

cc_result Updater_GetBuildTime(cc_uint64* timestamp) {
	return ERR_NOT_SUPPORTED;
}

cc_result Updater_MarkExecutable(void) {
	return ERR_NOT_SUPPORTED;
}

cc_result Updater_SetNewBuildTime(cc_uint64 timestamp) {
	return ERR_NOT_SUPPORTED;
}


/*########################################################################################################################*
*-------------------------------------------------------Dynamic lib-------------------------------------------------------*
*#########################################################################################################################*/
const cc_string DynamicLib_Ext = String_FromConst(".dylib");

void* DynamicLib_Load2(const cc_string* path) {
	return NULL;
}

void* DynamicLib_Get2(void* lib, const char* name) {
	return NULL;
}

cc_bool DynamicLib_DescribeError(cc_string* dst) {
	return false;
}


/*########################################################################################################################*
*--------------------------------------------------------Platform---------------------------------------------------------*
*#########################################################################################################################*/
void Platform_Free(void) { }

cc_bool Platform_DescribeError(cc_result res, cc_string* dst) {
	// TODO
	return false;
}

void Platform_Init(void) {
	SysBase = *((struct Library **)4UL);
	DOSBase = OpenLibrary("dos.library", 0);
}

cc_result Platform_Encrypt(const void* data, int len, cc_string* dst) {
	return ERR_NOT_SUPPORTED;
}

cc_result Platform_Decrypt(const void* data, int len, cc_string* dst) {
	return ERR_NOT_SUPPORTED;
}

cc_result Platform_GetEntropy(void* data, int len) {
	return ERR_NOT_SUPPORTED;
}
#endif