/*

Facebook plugin for Miranda Instant Messenger
_____________________________________________

Copyright © 2009-11 Michal Zelinka, 2011-13 Robert Pösel

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "common.h"

int FacebookProto::RecvMsg(MCONTACT hContact, PROTORECVEVENT *pre)
{
	StopTyping(hContact);

	// Remove from "readers" list and clear statusbar
	facy.erase_reader(hContact);

	return Proto_RecvMessage(hContact, pre);
}

void FacebookProto::SendMsgWorker(void *p)
{
	if(p == NULL)
		return;

	send_direct *data = static_cast<send_direct*>(p);

	ptrA id(getStringA(data->hContact, FACEBOOK_KEY_ID));

	if (!isOnline()) {
		ProtoBroadcastAck(data->hContact, ACKTYPE_MESSAGE, ACKRESULT_FAILED, data->msgid, (LPARAM)Translate("You cannot send messages when you are offline."));
	} else if (id == NULL) {
		ProtoBroadcastAck(data->hContact, ACKTYPE_MESSAGE, ACKRESULT_FAILED, data->msgid, 0);
	} else {
		int retries = 5;
		std::string error_text = "";
		int result = SEND_MESSAGE_ERROR;
		while (result == SEND_MESSAGE_ERROR && retries > 0) {
			result = facy.send_message(data->hContact, std::string(id), data->msg, &error_text, retries % 2 == 0 ? MESSAGE_INBOX : MESSAGE_MERCURY);
			retries--;
		}
		if (result == SEND_MESSAGE_OK) {
			ProtoBroadcastAck(data->hContact, ACKTYPE_MESSAGE, ACKRESULT_SUCCESS, data->msgid, 0);

			// Remove from "readers" list and clear statusbar
			facy.erase_reader(data->hContact);
		}
		else {
			ProtoBroadcastAck(data->hContact, ACKTYPE_MESSAGE, ACKRESULT_FAILED, data->msgid, (LPARAM)error_text.c_str());
		}
	}

	delete data;
}

void FacebookProto::SendChatMsgWorker(void *p)
{
	if(p == NULL)
		return;

	send_chat *data = static_cast<send_chat*>(p);
	std::string err_message = "";

	// replace %% back to %, because chat automatically does this to sent messages
	utils::text::replace_all(&data->msg, "%%", "%");

	MCONTACT hContact = ChatIDToHContact(std::tstring(_A2T(data->chat_id.c_str())));
	if (hContact) {
		ptrA tid_(getStringA(hContact, FACEBOOK_KEY_TID));
		std::string tid;
		if (tid_ != NULL) {
			tid = tid_;
		} else {
			std::string post_data = "threads[group_ids][0]=" + utils::url::encode(data->chat_id);
			post_data += "&fb_dtsg=" + facy.dtsg_;
			post_data += "&__user=" + facy.self_.user_id;
			post_data += "&phstamp=" + facy.phstamp(post_data);

			http::response resp = facy.flap(REQUEST_THREAD_INFO, &post_data);

			tid = utils::text::source_get_value(&resp.data, 2, "\"thread_id\":\"", "\"");
			setString(hContact, FACEBOOK_KEY_TID, tid.c_str());
			debugLogA("      Got thread info: %s = %s", data->chat_id.c_str(), tid.c_str());
		}		
		
		if (!tid.empty()) {
			if (facy.send_message(hContact, tid, data->msg, &err_message, MESSAGE_TID) == SEND_MESSAGE_OK)
				UpdateChat(_A2T(data->chat_id.c_str()), facy.self_.user_id.c_str(), facy.self_.real_name.c_str(), data->msg.c_str());
			else
				UpdateChat(_A2T(data->chat_id.c_str()), NULL, NULL, err_message.c_str());
		}
	}

	delete data;
}

int FacebookProto::SendMsg(MCONTACT hContact, int flags, const char *msg)
{
	// TODO: msg comes as Unicode (retyped wchar_t*), why should we convert it as ANSI to UTF-8? o_O
	if (flags & PREF_UNICODE)
		msg = mir_utf8encode(msg);
  
	facy.msgid_ = (facy.msgid_ % 1024) + 1;
	ForkThread(&FacebookProto::SendMsgWorker, new send_direct(hContact, msg, (HANDLE)facy.msgid_));
	return facy.msgid_;
}

int FacebookProto::UserIsTyping(MCONTACT hContact,int type)
{ 
	if (hContact && isOnline())
		ForkThread(&FacebookProto::SendTypingWorker, new send_typing(hContact, type));

	return 0;
}

void FacebookProto::SendTypingWorker(void *p)
{
	if (p == NULL)
		return;

	send_typing *typing = static_cast<send_typing*>(p);

	// Dont send typing notifications to not friends - Facebook won't give them that info anyway
	if (!isChatRoom(typing->hContact) && getWord(typing->hContact, FACEBOOK_KEY_CONTACT_TYPE, 0) != CONTACT_FRIEND) {
		delete typing;
		return;
	}

	// TODO RM: maybe better send typing optimalization
	facy.is_typing_ = (typing->status == PROTOTYPE_SELFTYPING_ON);
	SleepEx(2000, true);

	if (!facy.is_typing_ == (typing->status == PROTOTYPE_SELFTYPING_ON)) {
		delete typing;
		return;
	}
	
	const char *value = (isChatRoom(typing->hContact) ? FACEBOOK_KEY_TID : FACEBOOK_KEY_ID);
	ptrA id( getStringA(typing->hContact, value));
	if (id != NULL) {
		std::string data = "&source=mercury-chat";
		data += (typing->status == PROTOTYPE_SELFTYPING_ON ? "&typ=1" : "&typ=0");
		
		data += "&to=";
		if (isChatRoom(typing->hContact))
			data += "&thread=";
		data += utils::url::encode(std::string(id));

		data += "&fb_dtsg=" + facy.dtsg_;
		data += "&lsd=&__user=" + facy.self_.user_id;
		data += "&phstamp=" + facy.phstamp(data);
		
		http::response resp = facy.flap(REQUEST_TYPING_SEND, &data);
	}

	delete typing;
}

void FacebookProto::ReadMessageWorker(void *p)
{
	if (p == NULL)
		return;
	
	MCONTACT hContact = (MCONTACT)p;
	
	if (getBool(FACEBOOK_KEY_KEEP_UNREAD, 0) || getBool(hContact, FACEBOOK_KEY_KEEP_UNREAD, 0))
		return;

	// mark message read (also send seen info)
	const char *value = (isChatRoom(hContact) ? FACEBOOK_KEY_TID : FACEBOOK_KEY_ID);
	ptrA id( getStringA(hContact, value));
	if (id == NULL)
		return;

	std::string data = "ids[" + utils::url::encode(std::string(id)) + "]=true";
	data += "&fb_dtsg=" + facy.dtsg_;
	data += "&__user=" + facy.self_.user_id;
	data += "&__a=1&__dyn=&__req=&ttstamp=" + facy.ttstamp();

	facy.flap(REQUEST_MARK_READ, &data);
}

void FacebookProto::StickerAsSmiley(std::string sticker, std::string url, MCONTACT hContact)
{
	std::string b64 = ptrA( mir_base64_encode((PBYTE)sticker.c_str(), (unsigned)sticker.length()));
	b64 = utils::url::encode(b64);

	std::tstring filename = GetAvatarFolder() + _T("\\stickers\\") + (TCHAR*)_A2T(b64.c_str()) + _T(".png");
	
	// Check if we have this sticker already and download it it not
	if (GetFileAttributes(filename.c_str()) == INVALID_FILE_ATTRIBUTES) {
		HANDLE nlc = NULL;
		facy.save_url(url, filename, nlc);
		Netlib_CloseHandle(nlc);
	}

	SMADD_CONT cont;
	cont.cbSize = sizeof(SMADD_CONT);
	cont.hContact = hContact;
	cont.type = 1;
	cont.path = ptrT(_tcsdup(filename.c_str()));

	CallService(MS_SMILEYADD_LOADCONTACTSMILEYS, 0, (LPARAM)&cont);
}