//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
//
// 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 3 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, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library.  Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//

#include "vmime/mailboxGroup.hpp"
#include "vmime/parserHelpers.hpp"
#include "vmime/exception.hpp"


namespace vmime {


mailboxGroup::mailboxGroup() {

}


mailboxGroup::mailboxGroup(const mailboxGroup& mboxGroup)
	: address() {

	copyFrom(mboxGroup);
}


mailboxGroup::mailboxGroup(const text& name)
	: m_name(name) {

}


mailboxGroup::~mailboxGroup() {

	removeAllMailboxes();
}


void mailboxGroup::parseImpl(
	const parsingContext& ctx,
	const string& buffer,
	const size_t position,
	const size_t end,
	size_t* newPosition
) {

	const char* const pend = buffer.data() + end;
	const char* const pstart = buffer.data() + position;
	const char* p = pstart;

	while (p < pend && parserHelpers::isSpace(*p)) {
		++p;
	}

	string name;

	while (p < pend && *p != ':') {
		name += *p;
		++p;
	}

	if (p < pend && *p == ':') {
		++p;
	}


	size_t pos = position + (p - pstart);
	bool isLastAddressOfGroup = false;

	while (pos < end && !isLastAddressOfGroup) {

		shared_ptr <address> parsedAddress =
			address::parseNext(ctx, buffer, pos, end, &pos, &isLastAddressOfGroup);

		if (parsedAddress) {

			if (parsedAddress->isGroup()) {

				shared_ptr <mailboxGroup> group = dynamicCast <mailboxGroup>(parsedAddress);

				// Sub-groups are not allowed in mailbox groups: so, we add all
				// the contents of the sub-group into this group...
				for (size_t i = 0 ; i < group->getMailboxCount() ; ++i) {
					m_list.push_back(vmime::clone(group->getMailboxAt(i)));
				}

			} else {

				m_list.push_back(dynamicCast <mailbox>(parsedAddress));
			}
		}
	}

	text::decodeAndUnfold(ctx, utility::stringUtils::trim(name), &m_name);

	setParsedBounds(position, end);

	if (newPosition) {
		*newPosition = end;
	}
}


void mailboxGroup::generateImpl(
	const generationContext& ctx,
	utility::outputStream& os,
	const size_t curLinePos,
	size_t* newLinePos
) const {

	// We have to encode the name:
	//   - if it contains characters in a charset different from "US-ASCII",
	//   - and/or if it contains one or more of these special chars:
	//        SPACE  TAB  "  ;  ,  <  >  (  )  @  /  ?  .  =  :

	// Check whether there are words that are not "US-ASCII"
	// and/or contain the special chars.
	bool forceEncode = false;

	for (size_t w = 0 ; !forceEncode && w < m_name.getWordCount() ; ++w) {

		if (m_name.getWordAt(w)->getCharset() == charset(charsets::US_ASCII)) {

			const string& buffer = m_name.getWordAt(w)->getBuffer();

			for (string::const_iterator c = buffer.begin() ;
			     !forceEncode && c != buffer.end() ; ++c) {

				switch (*c) {

					case ' ':
					case '\t':
					case ';':
					case ',':
					case '<': case '>':
					case '(': case ')':
					case '@':
					case '/':
					case '?':
					case '.':
					case '=':
					case ':':

						forceEncode = true;
						break;
				}
			}
		}
	}

	size_t pos = curLinePos;

	generationContext tmpCtx(ctx);
	tmpCtx.setMaxLineLength(ctx.getMaxLineLength() - 2);

	m_name.encodeAndFold(
		ctx, os, pos, &pos,
		forceEncode ? text::FORCE_ENCODING : 0
	);

	os << ":";
	++pos;

	for (std::vector <shared_ptr <mailbox> >::const_iterator it = m_list.begin() ;
	     it != m_list.end() ; ++it) {

		if (it != m_list.begin()) {

			os << ", ";
			pos += 2;

		} else {

			os << " ";
			++pos;
		}

		(*it)->generate(tmpCtx, os, pos, &pos);
	}

	os << ";";
	pos++;

	if (newLinePos) {
		*newLinePos = pos;
	}
}


void mailboxGroup::copyFrom(const component& other) {

	const mailboxGroup& source = dynamic_cast <const mailboxGroup&>(other);

	m_name = source.m_name;

	removeAllMailboxes();

	for (std::vector <shared_ptr <mailbox> >::const_iterator it = source.m_list.begin() ;
	     it != source.m_list.end() ; ++it) {

		m_list.push_back(vmime::clone(*it));
	}
}


shared_ptr <component> mailboxGroup::clone() const {

	return make_shared <mailboxGroup>(*this);
}


mailboxGroup& mailboxGroup::operator=(const component& other) {

	copyFrom(other);
	return *this;
}


const text& mailboxGroup::getName() const {

	return m_name;
}


void mailboxGroup::setName(const text& name) {

	m_name = name;
}


bool mailboxGroup::isGroup() const {

	return true;
}


bool mailboxGroup::isEmpty() const {

	return m_list.empty();
}


void mailboxGroup::appendMailbox(const shared_ptr <mailbox>& mbox) {

	m_list.push_back(mbox);
}


void mailboxGroup::insertMailboxBefore(
	const shared_ptr <mailbox>& beforeMailbox,
	const shared_ptr <mailbox>& mbox
) {

	const std::vector <shared_ptr <mailbox> >::iterator it =
		std::find(m_list.begin(), m_list.end(), beforeMailbox);

	if (it == m_list.end()) {
		throw std::out_of_range("Invalid position");
	}

	m_list.insert(it, mbox);
}


void mailboxGroup::insertMailboxBefore(
	const size_t pos,
	const shared_ptr <mailbox>& mbox
) {

	if (pos >= m_list.size()) {
		throw std::out_of_range("Invalid position");
	}

	m_list.insert(m_list.begin() + pos, mbox);
}


void mailboxGroup::insertMailboxAfter(
	const shared_ptr <mailbox>& afterMailbox,
	const shared_ptr <mailbox>& mbox
) {

	const std::vector <shared_ptr <mailbox> >::iterator it =
		std::find(m_list.begin(), m_list.end(), afterMailbox);

	if (it == m_list.end()) {
		throw std::out_of_range("Invalid position");
	}

	m_list.insert(it + 1, mbox);
}


void mailboxGroup::insertMailboxAfter(
	const size_t pos,
	const shared_ptr <mailbox>& mbox
) {

	if (pos >= m_list.size()) {
		throw std::out_of_range("Invalid position");
	}

	m_list.insert(m_list.begin() + pos + 1, mbox);
}


void mailboxGroup::removeMailbox(const shared_ptr <mailbox>& mbox) {

	const std::vector <shared_ptr <mailbox> >::iterator it =
		std::find(m_list.begin(), m_list.end(), mbox);

	if (it == m_list.end()) {
		throw std::out_of_range("Invalid position");
	}

	m_list.erase(it);
}


void mailboxGroup::removeMailbox(const size_t pos) {

	if (pos >= m_list.size()) {
		throw std::out_of_range("Invalid position");
	}

	const std::vector <shared_ptr <mailbox> >::iterator it = m_list.begin() + pos;

	m_list.erase(it);
}


void mailboxGroup::removeAllMailboxes() {

	m_list.clear();
}


size_t mailboxGroup::getMailboxCount() const {

	return m_list.size();
}


shared_ptr <mailbox> mailboxGroup::getMailboxAt(const size_t pos) {

	return m_list[pos];
}


const shared_ptr <const mailbox> mailboxGroup::getMailboxAt(const size_t pos) const {

	return m_list[pos];
}


const std::vector <shared_ptr <const mailbox> > mailboxGroup::getMailboxList() const {

	std::vector <shared_ptr <const mailbox> > list;

	list.reserve(m_list.size());

	for (std::vector <shared_ptr <mailbox> >::const_iterator it = m_list.begin() ;
	     it != m_list.end() ; ++it) {

		list.push_back(*it);
	}

	return list;
}


const std::vector <shared_ptr <mailbox> > mailboxGroup::getMailboxList() {

	return m_list;
}


const std::vector <shared_ptr <component> > mailboxGroup::getChildComponents() {

	std::vector <shared_ptr <component> > list;

	copy_vector(m_list, list);

	return list;

}


} // vmime