#include "message.h"

#include <Log.h>
#include <nlohmann/json.hpp>
#include <ctime>

static void readText(const json& t, std::string& out) {
	if(t.is_null()) return;
	if(t.is_string())
		out = t;
	if(t.is_array()) {
		std::ostringstream buff;
		for(const json& entr : t) {
			if(entr.is_string())
				buff << (const std::string&) entr;
			else if(entr.contains("text"))
				buff << (const std::string&) entr["text"];
		}
		out = buff.str();
	}
}

Message::Message(const json& m, int64_t chatid) : chatid(chatid) {
	if(m.contains("text")) {
		readText(m["text"], text);
		messageid = m["id"];
		if(m.contains("file"))
			filename = m["file"];
		else if(m.contains("photo"))
			filename = m["photo"];

		if(m.contains("from_id") && m["from_id"].is_number_unsigned())
			senderid = m["from_id"];

		if(m.contains("forwarded_from") && m["forwarded_from"].is_string())
			fwdFrom = m["forwarded_from"];

		if(m.contains("date")) {
			tm parsedTime;
			::strptime(m["date"].get_ref<const std::string&>().c_str(), "%Y-%m-%dT%T", &parsedTime);
			date = timegm(&parsedTime);
		}
		isreply = m.contains("reply_to_message_id");
	} else {
		Log::warn << "text less message: " << m;
	}
}

bool Message::operator==(const Message& m) const {
	return (m.chatid == chatid) && (m.messageid == messageid);
}

bool Message::operator!=(const Message& m) const {
	return (m.chatid != chatid) || (m.messageid != messageid);
}

bool Message::operator<(const Message& m) const {
	if (chatid < m.chatid) return true;
	if (chatid > m.chatid) return false;
	// chatid == m.chatid
	return (messageid < m.messageid);
}

bool Message::hasFile() const {
	return !filename.empty();
}

std::string Message::getDate() const {
	struct tm buff;
	static const uint32_t buffsize = 20;
	char outbuff[buffsize];
	gmtime_r(&date, &buff);
	strftime(outbuff, buffsize, "%Y-%m-%d %T", &buff);
	return std::string(outbuff);
}