#define MEMSIZE 1024 * 40
//Copyright 2020 - 2021 by Leency
#include "../lib/gui.h"
#include "../lib/random.h"
#include "../lib/obj/box_lib.h"
#include "../lib/obj/http.h"

#include "const.h"

bool exit_param = false;
bool open_file = false;

dword speed;

_http http;

checkbox autoclose = { T_AUTOCLOSE, false }; 

char uEdit[URL_SIZE];
char filepath[URL_SIZE+96];

progress_bar pb = {0, GAPX, 58, 380, 17, 0, NULL, NULL, 0xFFFfff, 0x74DA00, NULL};
edit_box ed = {WIN_W-GAPX-GAPX,GAPX,20,0xffffff,0x94AECE,0xffffff,0xffffff,
	0x10000000, sizeof(uEdit)-2,#uEdit,0,ed_focus,19,19};


void main()  
{
	dword shared_url;
	load_dll(boxlib,  #box_lib_init,0);
	load_dll(libHTTP, #http_lib_init,1);

	if (!dir_exists(#save_dir)) CreateDir(#save_dir);
	SetCurDir(#save_dir);

	if (param) {
		if (streqrp(#param, "-e ")) {
			exit_param = true;
			param += 3;
		}
		if (streqrp(#param, "-eo ")) {
			exit_param = true;
			open_file = true;
			param += 4;
		}

		if (!strncmp(#param, "-mem", 5)) {
			//shared_url = memopen(#dl_shared, URL_SIZE+1, SHM_OPEN + SHM_WRITE);
			strcpy(#uEdit, shared_url);
		} else {
			strcpy(#uEdit, #param);
		}

		if (streq(#param, "-test")) {
			strcpy(#uEdit, URL_SPEED_TEST);
		}
	}
	if (uEdit[0]) StartDownloading(); else {
		edit_box_set_text stdcall (#ed, "http://");
	}
 
	@SetEventMask(EVM_REDRAW + EVM_KEY + EVM_BUTTON + EVM_MOUSE + EVM_MOUSE_FILTER + EVM_STACK);
	loop() switch(@WaitEvent())
	{
		case evMouse:  edit_box_mouse stdcall (#ed); break;
		case evButton: ProcessButtonClick(@GetButtonID()); break;
		case evKey:    ProcessKeyPress(); break;
		case evReDraw: DrawWindow(); break;
		default:       MonitorProgress();
	}
}
 
void ProcessButtonClick(int id)
{
	autoclose.click(id);
	if (id==BTN_EXIT) { StopDownloading(); ExitProcess(); }
	if (id==BTN_START) StartDownloading();
	if (id==BTN_STOP) StopDownloading();
	if (id==BTN_DIR) { RunProgram("/sys/File managers/Eolite", #filepath); ExitProcess(); }
	if (id==BTN_RUN) { RunProgram("/sys/@open", #filepath); ExitProcess(); }
}

void ProcessKeyPress()
{
	@GetKey(); 
	edit_box_key stdcall(#ed); 
	EAX >>= 16;
	if (AL == SCAN_CODE_ENTER) StartDownloading();
	if (AL == SCAN_CODE_ESC) StopDownloading();
}
 
void DrawWindow()
{  
	sc.get();
	pb.frame_color = sc.work_dark;
	DefineAndDrawWindow(110 + random(300), 100 + random(300), WIN_W+9, 
		WIN_H + 5 + skin_height, 0x34, sc.work, DL_WINDOW_HEADER, 0);

	#define BUT_Y 58;
	//autoclose.draw(WIN_W-135, BUT_Y+6);
	if (!http.transfer)
	{
		DrawStandartCaptButton(GAPX, BUT_Y, BTN_START, T_DOWNLOAD);   
		if (filepath)
		{
			DrawStandartCaptButton(GAPX+102, BUT_Y, BTN_DIR, T_OPEN_DIR);
			DrawStandartCaptButton(GAPX+276, BUT_Y, BTN_RUN, T_RUN);  
		}
	} else {
		DrawStandartCaptButton(WIN_W - 120, BUT_Y, BTN_STOP, T_CANCEL);
		DrawDownloadingProgress();
	}
	//ed.offset=0; //DEL?
	DrawEditBox(#ed);
}
 
void StartDownloading()
{
	char get_url[URL_SIZE+33];
	if (http.transfer > 0) return;
	ResetDownloadSpeed();
	filepath = '\0';
	if (!strncmp(#uEdit,"https:",6)) {
		miniprintf(#get_url, "http://gate.aspero.pro/?site=%s", #uEdit);
		//notify("'HTTPS for download is not supported, trying to download the file via HTTP' -W");
		//miniprintf(#http_url, "http://%s", #uEdit+8);
		//if (!downloader.Start(#http_url)) {
		//	notify("'Download failed.' -E");
		//	StopDownloading();
		//}
	} else {
		strcpy(#get_url, #uEdit);
	}
	if (http.get(#get_url)) {
		ed.blur_border_color = 0xCACACA;
		EditBox_UpdateText(#ed, ed_disabled);
		pb.value = 0;
		DrawWindow();
	} else {
		notify(T_ERROR_STARTING_DOWNLOAD);
		StopDownloading();
		if (exit_param) ExitProcess();
	}
}


void DrawDownloadingProgress()
{
	char bytes_received[70];
	dword gotkb = http.content_received/1024;

	EDI = http.content_received / 100;
	if (pb.value == EDI) return;

	pb.value = EDI;
	pb.max = http.content_length / 100;
	progressbar_draw stdcall(#pb);
	CalculateDownloadSpeed();
	sprintf(#bytes_received, KB_RECEIVED, gotkb/1024, gotkb%1024/103, speed);
	WriteTextWithBg(GAPX, pb.top + 22, 0xD0, sc.work_text, #bytes_received, sc.work);
}
 
void StopDownloading()
{
	http.stop();
	if (http.content_pointer) http.content_pointer = free(http.content_pointer);
	http.content_received = http.content_length = 0;

	ed.blur_border_color = 0xFFFfff;
	EditBox_UpdateText(#ed, ed_focus);
	DrawWindow();
}

void MonitorProgress() 
{
	char redirect_url[URL_SIZE];
	if (http.transfer <= 0) return;
	http.receive();
	if (!http.content_length) http.content_length = http.content_received * 20; //MOVE?

	if (http.receive_result) {
		DrawDownloadingProgress();  
	} else {
		if (http.status_code >= 300) && (http.status_code < 400) {
			http.header_field("location", #redirect_url, URL_SIZE);
			get_absolute_url(#redirect_url, #uEdit);
			edit_box_set_text stdcall (#ed, #redirect_url);
			StopDownloading();
			StartDownloading();
			return;
		}
		SaveFile(0);
		if (exit_param) ExitProcess();
		StopDownloading();
		DrawWindow();
	}
}

void SaveFile(int attempt)
{
	int i, fi=0;
	char notify_message[4296];
	char file_name[URL_SIZE+96];

	strcpy(#filepath, #save_dir);
	chrcat(#filepath, '/');

	if (attempt > 9) {
		notify("'Too many saving attempts' -E");
		return;
	}

	if (attempt > 0) { 
		chrcat(#filepath, attempt+'0'); 
		chrcat(#filepath, '_'); 
	}

	//Content-Disposition: attachment; filename="RealFootball_2018_Nokia_5800_EN_IGP_EU_TS_101.zip"
	if (http.header_field("content-disposition", #file_name, sizeof(file_name))) {
		if (EDX = strstr(#file_name,"filename=\"")) { 
			strcat(#filepath, EDX+10);
			ESBYTE[strchr(#filepath,'\"')] = '\0';
		}
	} else {
		// Clean all slashes at the end
		strcpy(#file_name, #uEdit);
		while (file_name[strlen(#file_name)-1] == '/') {
			file_name[strlen(#file_name)-1] = 0;
		}
		strcat(#filepath, #file_name+strrchr(#file_name, '/'));	
	}
	
	for (i=0; i<strlen(#filepath); i++) if(filepath[i]==':')||(filepath[i]=='?')filepath[i]='-';

	while (file_exists(#filepath)) {
		SaveFile(attempt+1);
		return;
	} 

	if (CreateFile(http.content_received, http.content_pointer, #filepath)==0) {
		miniprintf(#notify_message, FILE_SAVED_AS, #filepath);
	} else {
		miniprintf(#notify_message, FILE_NOT_SAVED, #filepath);
	}

	if (!exit_param) notify(#notify_message);

	if (!strcmpi(#filepath+strlen(#filepath)-4, ".zip"))
	|| (!strcmpi(#filepath+strlen(#filepath)-3, ".7z")) {
		Unarchive(#filepath);
	}

	if (open_file) ProcessButtonClick(BTN_RUN);
	if (autoclose.checked) ExitProcess();
}

void Unarchive(dword _arc)
{
	char folder_name[4096];
	strcpy(#folder_name, "/tmp0/1/Downloads/");
	strcpy(#folder_name, #filepath+strrchr(#filepath, '/'));
	folder_name[strlen(#folder_name)-4] = '\0';
	CreateDir(#folder_name);

	strcpy(#param, "-o \"");
	strcat(#param, #folder_name);
	strcat(#param, "\" -h \"");
	strcat(#param, #filepath);
	chrcat(#param, '\"');
	RunProgram("/sys/unz", #param);	
}


struct TIME
{
	dword old;
	dword cur;
	dword gone;
} time = {0,0,0};

dword netdata_received;

void ResetDownloadSpeed()
{
	time.old = 0;
	netdata_received = 0;
}

void CalculateDownloadSpeed()
{
	time.cur = GetStartTime();

	if (time.old) {
		time.gone = time.cur - time.old;
		if (time.gone >= 200) {
			speed = http.content_received - netdata_received / time.gone / 10;
			time.old = time.cur;
			netdata_received = http.content_received;
		}
	} else { 
		time.old = time.cur;
	}
}