//Leency & SoUrcerer, LGPL

#define LIST_INFO_H 59
int status_bar_h = 15;

llist mail_list;
llist letter_view;
scroll_bar scroll1 = { 17,200,210, LIST_INFO_H-3,18,0,115,15,0,0xCCCccc,0xD2CED0,0x555555,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1};
scroll_bar scroll2 = { 17,200,210, LIST_INFO_H,18,0,115,15,0,0xCCCccc,0xD2CED0,0x555555,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1};

char from[256];
char to[256];
char date[256];
char subj[256];
dword mdata;

struct letter_attr
{
   char adress[sizeof(to)];
   char subject[sizeof(subj)];
   byte direction;
   int size;
   void CreateArray();
   void SetSizes();
   void SetAtrFromCurr(int N);
   int  GetSize(int N);
   char GetDirection(int N);
   dword GetSubject(int N);
   dword GetAdress(int N);
};
letter_attr atr;
dword mails_db;

char *listbuffer;
char *listpointer;

char *mailbuffer;
char *mailpointer;


enum {
	GET_MAIL = 20,
	SEND_MAIL,
	DELETE_LETTER,
	SAVE_LETTER,
	STOP_LOADING,
	EXIT_MAIL,
	CHANGE_CHARSET,
	CLOSE_CHANGE_CHARSET
};


void MailBoxLoop()
{
	int key, id;
	mouse m;
	int panels_drag = 0;
	char socket_char;
	int letter_size;
	dword line_col, text_col;

	mail_list.h = Form.cheight/4;
	mail_list.ClearList();
	SetMailBoxStatus( NULL , NULL);
	cur_charset = 0;
	
	goto _MB_DRAW;

	loop()	
	{
		WaitEventTimeout(2);
		switch(EAX & 0xFF)
		{
			case evMouse:
				IF (GetProcessSlot(Form.ID)-GetActiveProcess()!=0) break;
				m.get();
				
				if (!m.lkm) panels_drag=0;
				if (m.lkm) && (m.y>mail_list.y+mail_list.h-1) && (m.y<mail_list.y+mail_list.h+6)
				&& (!scroll1.delta2) && (!scroll2.delta2) panels_drag = 1;
				if (panels_drag)
				{
					if (m.y<mail_list.y+mail_list.min_h) || (m.y>Form.cheight-letter_view.min_h-status_bar_h-LIST_INFO_H) break;
					mail_list.h = m.y - mail_list.y-2;
					DrawMailBox();
					break;
				}

				if (!mail_list.count) break;
				if (!panels_drag) { scrollbar_v_mouse (#scroll1); scrollbar_v_mouse (#scroll2); }
				
				if (mail_list.first <> scroll1.position)
				{
					mail_list.first = scroll1.position;
					DrawMailList();
					break;
				};
				if (letter_view.first <> scroll2.position)
				{
					letter_view.first = scroll2.position;
					DrawLetter();
					break;
				};
				
				if (mail_list.y+mail_list.h + 10 > m.y)
				{
					if (mail_list.MouseScroll(m.vert)) DrawMailList();
				}
				else
				{
					if (letter_view.MouseScroll(m.vert)) DrawLetter();
				}

				break;				
			case evButton:
				id = GetButtonID(); 
				if (id==1) SaveAndExit();
				if (id==GET_MAIL) aim = SEND_NSTAT;
				if (id==SAVE_LETTER)
				{
					if (!mailbuffer) break;
					WriteFile(strlen(mailbuffer), mailbuffer, "mail.txt");
					pause(10);
					RunProgram("tinypad", "mail.txt");
				}
				if (id==STOP_LOADING) 
				{
					StopLoading();
					DrawStatusBar();
					DrawMailList();
				}
				if (id==EXIT_MAIL) 
				{
					StopLoading();
					Close(socketnum);
					LoginBoxLoop();
				}
				if (id==CHANGE_CHARSET) 
				{
					DefineButton(0,0,Form.cwidth,Form.cheight, CLOSE_CHANGE_CHARSET+BT_HIDE+BT_NOFRAME);
					DrawRectangle(Form.cwidth-100, Form.cheight-status_bar_h- 70, 70, 82, sc.work_graph);
					DrawRectangle3D(Form.cwidth-99, Form.cheight-status_bar_h- 69, 68, 80, 0xFFFfff, sc.work);
					for (id=0; id<5; id++)
					{
						if (cur_charset==id+1) { line_col=sc.work_button; text_col=sc.work_button_text; }
						else { line_col=sc.work; text_col=sc.work_text; }
						DrawBar(Form.cwidth-98, id*16+Form.cheight-status_bar_h- 68, 67, 16, line_col);
						DrawCaptButton(Form.cwidth-100, id*16+Form.cheight-status_bar_h- 68, 70,16, 10+id+BT_HIDE,
						0, text_col, charsets[id+1]);
					}
				}
				if (id==CLOSE_CHANGE_CHARSET) goto _MB_DRAW;

				if (id>=30)
				{
					if (aim) break;
					mail_list.current = mail_list.first + id - 30;
					DrawMailList();
					aim = SEND_RETR;
				}

				break;				
			case evKey:
				key = GetKey();

				if (key == 177){ //down
					if (aim) break;
					if (mail_list.current >= mail_list.count-1) break;
					mail_list.current++ ;
					if (mail_list.current >= mail_list.first + mail_list.visible) mail_list.first++ ;
					DrawMailList();
					aim = SEND_RETR;
				}
				if (key == 178){ //up
					if (aim) break;
					if (mail_list.current<=0) break;
					mail_list.current-- ;
					if (mail_list.current < mail_list.first) mail_list.first-- ;
					DrawMailList();
					aim = SEND_RETR;
				}
				if (key == 180){ //home
					if (aim) break;
					mail_list.first = mail_list.current = 0;
					DrawMailList();
					aim = SEND_RETR;
				}
				if (key == 181){ //end
					if (aim) break;
					mail_list.first = mail_list.count - mail_list.visible;
					mail_list.current = mail_list.count - 1; 
					DrawMailList();
					aim = SEND_RETR;
				}

				break;
			case evReDraw: _MB_DRAW:
				if !(DefineWindow(MAILBOX_HEADER)) break;
				scroll1.bckg_col = scroll2.bckg_col = 0xBBBbbb;
				scroll1.frnt_col = scroll2.frnt_col = sc.work;
				scroll1.line_col = scroll2.line_col = sc.work_graph;
				DrawToolbar();
				DrawMailBox();

				break;
			default:
				if (aim == SEND_NSTAT)
				{
					debug("Counting mail, awaiting answer...");			
					request_len = GetRequest("STAT", NULL);
					Send(socketnum, #request, request_len, 0);
					if (EAX == 0xffffffff) { debug("Error sending STAT. Retry..."w); break;}
					aim = GET_ANSWER_NSTAT;
				}
				
				if (aim == GET_ANSWER_NSTAT)
				{
					ticks = Receive(socketnum, #immbuffer, BUFFERSIZE, 0);
					if ((ticks == 0xffffff) || (ticks < 2)) break;
										
					if (immbuffer[ticks-2]=='\n')
					{
						debug("GOT::");
						debug(#immbuffer);
						if (strstr(#immbuffer,"+OK"))
						{
							mail_list.count = GetMailCount();
							debug("Letters:");
							debug(itoa(mail_list.count));
							free(listbuffer);
							listbuffer = mem_Alloc(30*mail_list.count); //24* original
							listpointer = listbuffer;	
							aim = SEND_NLIST;
							debug("Receiving mail list...");
						}
						else
						{
							notify("Sorry, can't recieve your mail");
							aim=NULL;    //aim = SEND_NLIST;
						}
					}
				}

				if (aim == SEND_NLIST)
				{		
					WriteText(5, Form.cheight-11, 0x80, sc.work_text, "Send LIST, awaiting answer...");
					request_len = GetRequest("LIST", NULL);
					Send(socketnum, #request, request_len, 0);
					if (EAX == 0xffffffff) {debug("Error while sending LIST. Retry..."); break;}
					aim = GET_ANSWER_NLIST;
				}

				if (aim == GET_ANSWER_NLIST)
				{		
					ticks = Receive(socketnum, listpointer, listbuffer + 30*mail_list.count - listpointer, MSG_DONTWAIT);
					if (ticks == 0xffffffff) break;	
					listpointer = listpointer + ticks;	
					
					if (listpointer - listbuffer < 5) break;
					if (strncmp(listpointer-5,"\n.\n",5)==0)  // note that c-- assembles "\n.\n" to 0x0d, 0x0a, 0x2e, 0x0d, 0x0a	
					{
						aim = SEND_RETR;
						debug("Got mail list");
						DrawMailBox();
						
						*listpointer='\0';
						atr.CreateArray();
						atr.SetSizes();
					}
				}
				
				if (aim == SEND_RETR)
				{
					from = to = date = subj = cur_charset = NULL;
					letter_view.ClearList();
					DrawMailBox();
					debug("Send RETR, awaiting answer...");
					request_len = GetRequest("RETR", itoa(mail_list.current+1));
					Send(socketnum, #request, request_len, 0);
					if (EAX == 0xffffffff) { notify("Error while trying to get letter from server"); aim=NULL; break;}

					free(mailbuffer);
					letter_size = atr.GetSize(mail_list.current+1) + 1024;
					mailbuffer = malloc(letter_size);
					if (!mailbuffer) {debug("alloc error!"); aim=NULL; break;}					
					mailpointer = mailbuffer;
					aim = GET_ANSWER_RETR;
				}
				
				if (aim == GET_ANSWER_RETR)
				{
					ticks = Receive(socketnum, mailpointer, letter_size + mailbuffer - mailpointer , MSG_DONTWAIT);
					if (ticks == 0xffffffff) break;		
					//debugi(EAX);
					
					mailpointer = mailpointer + ticks;
					//*mailpointer='\0';
					//debug(mailbuffer); 

					if (!aim) continue;

					if (letter_size + mailbuffer - mailpointer - 2 < 0)
					{
						debug("Resizing buffer");
						letter_size += 4096;
						mailbuffer = realloc(mailbuffer, letter_size);
						if (!mailbuffer) {debug("Realloc error!"); aim=NULL; break;}
					}

					if (letter_size>9000)
					{
						id = mailpointer - mailbuffer * 100 ;
						id /= letter_size - 1024;
						if (id!=cur_st_percent) SetMailBoxStatus( id , NULL);
					}

					ParseMail();
				}

		}
	}
}


void DrawMailBox()
{
	DrawMailList();
	DrawLetterInfo();
	DrawLetter();
	DrawStatusBar();
}


void DrawToolbar()
{
	#define BUT_Y 7
	#define BUT_H 22
	#define BUT_W 74
	#define BUT_SPACE 11
	int toolbar_w = BUT_Y + BUT_H + BUT_Y + 3;
	mail_list.SetSizes(0, toolbar_w, Form.cwidth - scroll1.size_x - 1, mail_list.h, 60,18);

	DrawBar(0,0, Form.cwidth,toolbar_w-3, sc.work);
	DrawCaptButton(10                    , BUT_Y, BUT_W, BUT_H, GET_MAIL,      sc.work_button, sc.work_button_text,"Get mail");
	DrawCaptButton(BUT_W+BUT_SPACE   + 10, BUT_Y, BUT_W, BUT_H, SEND_MAIL,     sc.work_button, sc.work_button_text,"Send Email");
	DrawCaptButton(BUT_W+BUT_SPACE*2 + 10, BUT_Y, BUT_W, BUT_H, DELETE_LETTER, sc.work_button, sc.work_button_text,"Delete");
	DrawCaptButton(BUT_W+BUT_SPACE*3 + 10, BUT_Y, BUT_W, BUT_H, SAVE_LETTER,   sc.work_button, sc.work_button_text,"Save");
	DrawCaptButton(Form.cwidth-BUT_W - 10, BUT_Y, BUT_W, BUT_H, EXIT_MAIL,     sc.work_button, sc.work_button_text,"< Exit");

	DrawBar(0, mail_list.y-3, mail_list.w,1, sc.work_graph);
	DrawBar(0, mail_list.y-2, mail_list.w,1, 0xdfdfdf);
	DrawBar(0, mail_list.y-1, mail_list.w,1, 0xf0f0f0);
}


void DrawMailList()
{
	int i, on_y, on_x, direction;
	mail_list.visible = mail_list.h / mail_list.line_h;

	for (i=30; i<150; i++) DeleteButton(i); 
	for (i=0; (i<mail_list.visible) && (i+mail_list.first<mail_list.count); i++)
	{
		on_y = i*mail_list.line_h + mail_list.y;
		if (mail_list.current==mail_list.first+i)
		{
			DrawBar(0, on_y, mail_list.w, mail_list.line_h-1, 0xEEEeee);
		}
		else
		{
			DrawBar(0, on_y, mail_list.w, mail_list.line_h-1, 0xFFFfff);
		}
		direction = atr.GetDirection(i+mail_list.first+1);
		on_x = strlen(itoa(i+mail_list.first+1))*6;
		_PutImage(on_x + 18, mail_list.line_h-12/2+ on_y, 18,12, sizeof(in_out_mail)/3*direction + #in_out_mail);
		WriteText(on_x + 42, on_y+5, 0x80, 0, atr.GetSubject(i+mail_list.first+1));
		DefineButton(0, on_y, mail_list.w-1, mail_list.line_h, 30+i+BT_HIDE+BT_NOFRAME);
		DrawBar(0, on_y + mail_list.line_h-1, mail_list.w, 1, 0xCCCccc);
		WriteText(10, on_y+5, 0x80, 0, itoa(i+mail_list.first+1));
		WriteText(mail_list.w - 40, on_y+5, 0x80, 0, ConvertMemSize(atr.GetSize(i+mail_list.first+1)));
	}
	DrawBar(0, i*mail_list.line_h + mail_list.y, mail_list.w, -i*mail_list.line_h+mail_list.h, 0xFFFfff);
	DrawScroller1();
}

void DrawLetterInfo()
{
	int lt_y = mail_list.y+mail_list.h;
	DrawBar(0, lt_y, mail_list.w, 1, sc.work_graph);
	DrawBar(0, lt_y+1, Form.cwidth, 1, LBUMP);
	DrawBar(0, lt_y+2, Form.cwidth, LIST_INFO_H-4, sc.work);
	WriteText(mail_list.w-30/2, lt_y, 0x80, 0x888888, "= = =");
	WriteText(mail_list.w-30/2, lt_y+1, 0x80, 0xEeeeee, "= = =");
	DrawBar(0, lt_y+LIST_INFO_H-2, mail_list.w, 1, sc.work_graph); //bottom
	DrawBar(0, lt_y+LIST_INFO_H-1, mail_list.w, 1, 0xdfdfdf);
	DrawBar(0, lt_y+LIST_INFO_H  , mail_list.w, 1, 0xf0f0f0);
	WriteTextB(10, lt_y+8 , 0x80, sc.work_text, "From:");
	WriteText (45, lt_y+8 , 0x80, sc.work_text, #from);
	WriteTextB(10, lt_y+20, 0x80, sc.work_text, "To:");
	WriteText (45, lt_y+20, 0x80, sc.work_text, #to);
	WriteTextB(10, lt_y+32, 0x80, sc.work_text, "Date:");
	WriteText (45, lt_y+32, 0x80, sc.work_text, #date);
	WriteTextB(10, lt_y+44, 0x80, sc.work_text, "Subject:");
	WriteText (66, lt_y+44, 0x80, sc.work_text, #subj);
}

void DrawLetter()
{
	int i=0;
	dword cur_line, next_line, line_text;
	cur_line = mdata;

	letter_view.SetSizes(0, mail_list.y+mail_list.h+LIST_INFO_H+1, Form.cwidth - scroll2.size_x - 1, 
		Form.cheight - mail_list.y - mail_list.h - LIST_INFO_H - 1 - status_bar_h, 60, 12);

	if (mailbuffer) && (!aim)
	{
		for ( ; i < letter_view.first; i++) cur_line = GetNextLine(cur_line);

		for (i=0; i < letter_view.h / letter_view.line_h; i++)
		{
			next_line = GetNextLine(cur_line);
			line_text = CopyBetweenOffsets(cur_line, next_line);
			cur_line = next_line;
			if (cur_line >= mailpointer) || (cur_line==1) break;
			DrawBar(letter_view.x, i*letter_view.line_h + letter_view.y, letter_view.w, letter_view.line_h, 0xFFFfff);
			if (line_text) { WriteText(letter_view.x+5, i*letter_view.line_h+letter_view.y+3, 0x80, 0, line_text); free(line_text);}
		}
	}
	DrawBar(letter_view.x, i*letter_view.line_h + letter_view.y, letter_view.w, -i*letter_view.line_h + letter_view.h-1, 0xFFFfff);
	DrawBar(letter_view.x, letter_view.y + letter_view.h-1, letter_view.w, 1, sc.work_graph);
	DrawScroller2();
}

void DrawScroller1()
{
	scroll1.max_area = mail_list.count;
	scroll1.cur_area = mail_list.visible;
	scroll1.position = mail_list.first;

	scroll1.all_redraw=1;
	scroll1.start_x = mail_list.x + mail_list.w;
	scroll1.start_y = mail_list.y - 3;
	scroll1.size_y = mail_list.h + 4;
	scrollbar_v_draw(#scroll1);
}

void DrawScroller2()
{
	scroll2.max_area = letter_view.count;
	scroll2.cur_area = letter_view.visible;
	scroll2.position = letter_view.first;

	scroll2.all_redraw=1;
	scroll2.start_x = letter_view.x + letter_view.w;
	scroll2.start_y = letter_view.y - 3;
	scroll2.size_y = letter_view.h + 3;
	scrollbar_v_draw(#scroll2);
}



void DrawStatusBar()
{
	int st_y = Form.cheight -status_bar_h;
	DrawBar(0, st_y, Form.cwidth, status_bar_h, sc.work);
	if (aim) {
		SetMailBoxStatus(cur_st_percent, cur_st_text);
		DrawCaptButton(240, st_y+1, 36, status_bar_h-3, STOP_LOADING, sc.work_button, sc.work_button_text,"Stop");
	}
	DrawCaptButton(Form.cwidth - 100, st_y+1, 70, status_bar_h-2, CHANGE_CHARSET+BT_HIDE, sc.work, sc.work_text,charsets[cur_charset]);
}



void SetMailBoxStatus(dword percent1, text1)
{
	DrawProgressBar(3, Form.cheight -status_bar_h + 1, 220, 12, sc.work, 0xC3C3C3, 0x54B1D6, sc.work_text, percent1, text1);
	cur_st_percent = percent1;
	cur_st_text = text1;
}


void StopLoading()
{
	aim = NULL;
	mailbuffer = free(mailbuffer);
	to = from = date = subj = cur_charset = NULL;
}

int GetMailCount(){
	char tmpbuf4[512];
	strcpyb(#immbuffer, #tmpbuf4, "+OK ", " ");
	return atoi(#tmpbuf4);
}



int GetLetterSize_(int number){
	char search_num[24];
	char letter_size1[24];
	strcpy(#search_num, "\n");			// 0x0d, 0x0a
	strcat(#search_num, itoa(number));
	strcat(#search_num, " ");
	strcpyb(listbuffer, #letter_size1, #search_num, "\x0d");
	return atoi(#letter_size1); 
}


void letter_attr::CreateArray()
{
	free(mails_db);
	mails_db = malloc( mail_list.count * sizeof(atr) );
}

void letter_attr::SetSizes()
{
	int i;
	for (i=1; i < mail_list.count; i++)
	{
		ESDWORD[sizeof(atr)*i+#mails_db+#atr.size-#atr] = GetLetterSize_(i);
		ESDWORD[sizeof(atr)*i+#mails_db+#atr.subject-#atr] = ' ';
		ESDWORD[sizeof(atr)*i+#mails_db+#atr.subject-#atr+1] = '\0';
	}
}

void letter_attr::SetAtrFromCurr(int N)
{
	byte mail_direction=0;
	if (strstri(#to, #email_text))
	{
		mail_direction = 1;
		strcpy(sizeof(atr)*N+#mails_db+#atr.adress-#atr, #from);
	}
	if (strstri(#from, #email_text))
	{
		mail_direction = 2;
		strcpy(sizeof(atr)*N+#mails_db+#atr.adress-#atr, #to);
	}
	ESBYTE[sizeof(atr)*N+#mails_db+#atr.direction-#atr] = mail_direction;
	strcpy(sizeof(atr)*N+#mails_db+#atr.subject-#atr, #subj);
}

int letter_attr::GetSize(int N) { return ESDWORD[sizeof(atr)*N+#mails_db+#atr.size-#atr]; }
char letter_attr::GetDirection(int N) { return ESBYTE[sizeof(atr)*N+#mails_db+#atr.direction-#atr]; }
dword letter_attr::GetSubject(int N) { return sizeof(atr)*N+#mails_db+#atr.subject-#atr; }
dword letter_attr::GetAdress(int N) { return sizeof(atr)*N+#mails_db+#atr.adress-#atr; }