/*
 *  This file is part of nzbget. See <http://nzbget.net>.
 *
 *  Copyright (C) 2013-2016 Andrey Prygunkov <hugbug@users.sourceforge.net>
 *
 *  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 "nzbget.h"
#include "FeedInfo.h"
#include "Util.h"

FeedInfo::FeedInfo(int id, const char* name, const char* url, bool backlog, int interval,
		const char* filter, bool pauseNzb, const char* category, int priority, const char* extensions) :
	m_backlog(backlog), m_interval(interval), m_pauseNzb(pauseNzb), m_priority(priority)
{
	m_id = id;
	m_name = name ? name : "";
	if (m_name.Length() == 0)
	{
		m_name.Format("Feed%i", m_id);
	}
	m_url = url ? url : "";
	m_filter = filter ? filter : "";
	m_filterHash = Util::HashBJ96(m_filter, strlen(m_filter), 0);
	m_category = category ? category : "";
	m_extensions = extensions ? extensions : "";
}


FeedItemInfo::Attr* FeedItemInfo::Attributes::Find(const char* name)
{
	for (Attr& attr : this)
	{
		if (!strcasecmp(attr.GetName(), name))
		{
			return &attr;
		}
	}

	return nullptr;
}


void FeedItemInfo::SetSeason(const char* season)
{
	m_season = season;
	m_seasonNum = season ? ParsePrefixedInt(season) : 0;
}

void FeedItemInfo::SetEpisode(const char* episode)
{
	m_episode = episode;
	m_episodeNum = episode ? ParsePrefixedInt(episode) : 0;
}

int FeedItemInfo::ParsePrefixedInt(const char *value)
{
	const char* val = value;
	if (!strchr("0123456789", *val))
	{
		val++;
	}
	return atoi(val);
}

void FeedItemInfo::AppendDupeKey(const char* extraDupeKey)
{
	if (!m_dupeKey.Empty() && !Util::EmptyStr(extraDupeKey))
	{
		m_dupeKey.AppendFmt("-%s", extraDupeKey);
	}
}

void FeedItemInfo::BuildDupeKey(const char* rageId, const char* tvdbId, const char* tvmazeId, const char* series)
{
	int rageIdVal = !Util::EmptyStr(rageId) ? atoi(rageId) : m_rageId;
	int tvdbIdVal = !Util::EmptyStr(tvdbId) ? atoi(tvdbId) : m_tvdbId;
	int tvmazeIdVal = !Util::EmptyStr(tvmazeId) ? atoi(tvmazeId) : m_tvmazeId;

	if (m_imdbId != 0)
	{
		m_dupeKey.Format("imdb=%i", m_imdbId);
	}
	else if (!Util::EmptyStr(series) && GetSeasonNum() != 0 && GetEpisodeNum() != 0)
	{
		m_dupeKey.Format("series=%s-%s-%s", series, *m_season, *m_episode);
	}
	else if (rageIdVal != 0 && GetSeasonNum() != 0 && GetEpisodeNum() != 0)
	{
		m_dupeKey.Format("rageid=%i-%s-%s", rageIdVal, *m_season, *m_episode);
	}
	else if (tvdbIdVal != 0 && GetSeasonNum() != 0 && GetEpisodeNum() != 0)
	{
		m_dupeKey.Format("tvdbid=%i-%s-%s", tvdbIdVal, *m_season, *m_episode);
	}
	else if (tvmazeIdVal != 0 && GetSeasonNum() != 0 && GetEpisodeNum() != 0)
	{
		m_dupeKey.Format("tvmazeid=%i-%s-%s", tvmazeIdVal, *m_season, *m_episode);
	}
	else
	{
		m_dupeKey = "";
	}
}

int FeedItemInfo::GetSeasonNum()
{
	if (!m_season && !m_seasonEpisodeParsed)
	{
		ParseSeasonEpisode();
	}

	return m_seasonNum;
}

int FeedItemInfo::GetEpisodeNum()
{
	if (!m_episode && !m_seasonEpisodeParsed)
	{
		ParseSeasonEpisode();
	}

	return m_episodeNum;
}

void FeedItemInfo::ParseSeasonEpisode()
{
	m_seasonEpisodeParsed = true;

	const char* pattern = "[^[:alnum:]]s?([0-9]+)[ex]([0-9]+(-?e[0-9]+)?)[^[:alnum:]]";

	std::unique_ptr<RegEx>& regEx = m_feedFilterHelper->GetRegEx(1);
	if (!regEx)
	{
		regEx = std::make_unique<RegEx>(pattern, 10);
	}

	if (regEx->Match(m_title))
	{
		SetSeason(BString<100>("S%02d", atoi(m_title + regEx->GetMatchStart(1))));

		BString<100> regValue;
		regValue.Set(m_title + regEx->GetMatchStart(2), regEx->GetMatchLen(2));

		BString<100> episode("E%s", *regValue);
		Util::ReduceStr(episode, "-", "");
		for (char* p = episode; *p; p++) *p = toupper(*p); // convert string to uppercase e02 -> E02
		SetEpisode(episode);
	}
}

const char* FeedItemInfo::GetDupeStatus()
{
	if (!m_dupeStatus)
	{
		BString<1024> statuses;
		m_feedFilterHelper->CalcDupeStatus(m_title, m_dupeKey, statuses, statuses.Capacity());
		m_dupeStatus = statuses;
	}

	return m_dupeStatus;
}


void FeedHistory::Remove(const char* url)
{
	for (iterator it = begin(); it != end(); it++)
	{
		FeedHistoryInfo& feedHistoryInfo = *it;
		if (!strcmp(feedHistoryInfo.GetUrl(), url))
		{
			erase(it);
			break;
		}
	}
}

FeedHistoryInfo* FeedHistory::Find(const char* url)
{
	for (FeedHistoryInfo& feedHistoryInfo : this)
	{
		if (!strcmp(feedHistoryInfo.GetUrl(), url))
		{
			return &feedHistoryInfo;
		}
	}

	return nullptr;
}