/**
 *  @file mime-getpart.cc
 *  @brief  Implementation of main mime parser components
 *  @author Andreas Aardal Hanssen
 *  @date 2002-2005
 */

#include "convert.h"
#include "mime.h"

#include <exception>
#include <iostream>
#include <map>
#include <string>
#include <vector>

#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>

const Binc::MimePart *Binc::MimePart::getPart(const std::string &findpart,
                                              std::string genpart,
                                              FetchType fetchType) const
{
  if (findpart == genpart) return this;

  if (isMultipart()) {
    if (members.size() != 0) {
      int part = 1;
      for (const auto &i : members) {
        BincStream ss;
        ss << genpart;
        if (genpart != "") ss << ".";
        ss << part;

        const MimePart *m;
        if ((m = i.getPart(findpart, ss.str())) != nullptr) {
          if (fetchType == FetchHeader && m->isMessageRFC822()) m = &m->members[0];
          return m;
        }

        ++part;
      }
    }
  } else if (isMessageRFC822()) {
    if (members.size() == 1) {
      const MimePart *m = members[0].getPart(findpart, genpart);
      return m;
    } else {
      return nullptr;
    }
  } else {
    // Singlepart
    if (genpart != "") genpart += ".";
    genpart += "1";

    if (findpart == genpart) return this;
  }

  return nullptr;
}