/**
 *  @file mime.h
 *  @brief  Declaration of main mime parser components
 *  @author Andreas Aardal Hanssen
 *  @date Andreas Aardal Hanssen
 */

#ifndef mime_h_included
#define mime_h_included

#include <map>
#include <string>
#include <vector>

#include <stdio.h>

namespace Binc {
  class HeaderItem {
  private:
    mutable std::string key;
    mutable std::string value;

  public:
    inline const std::string &getKey() const
    {
      return key;
    }

    inline const std::string &getValue() const
    {
      return value;
    }

    HeaderItem();
    HeaderItem(const std::string &key, const std::string &value);
  };

  class Header {
  private:
    mutable std::vector<HeaderItem> content;

  public:
    bool getFirstHeader(const std::string &key, HeaderItem &dest) const;
    bool getAllHeaders(const std::string &key, std::vector<HeaderItem> &dest) const;
    void add(const std::string &name, const std::string &content);
    void clear() const;

    Header();
    ~Header();
  };

  class IODevice;
  class MimeDocument;

  class MimePart {
  protected:
  public:
    mutable bool multipart;
    mutable bool messagerfc822;
    mutable std::string subtype;
    mutable std::string boundary;

    mutable unsigned int headerstartoffsetcrlf;
    mutable unsigned int headerlength;

    mutable unsigned int bodystartoffsetcrlf;
    mutable unsigned int bodylength;
    mutable unsigned int nlines;
    mutable unsigned int nbodylines;
    mutable unsigned int size;

  public:
    enum FetchType { FetchBody, FetchHeader, FetchMime };

    mutable Header h;

    mutable std::vector<MimePart> members;

    inline const std::string &getSubType() const
    {
      return subtype;
    }

    inline bool isMultipart() const
    {
      return multipart;
    }

    inline bool isMessageRFC822() const
    {
      return messagerfc822;
    }

    inline unsigned int getSize() const
    {
      return bodylength;
    }

    inline unsigned int getNofLines() const
    {
      return nlines;
    }

    inline unsigned int getNofBodyLines() const
    {
      return nbodylines;
    }

    inline unsigned int getBodyLength() const
    {
      return bodylength;
    }

    inline unsigned int getBodyStartOffset() const
    {
      return bodystartoffsetcrlf;
    }

    void printBody(int fd,
                   Binc::IODevice &output,
                   unsigned int startoffset,
                   unsigned int length) const;
    void printHeader(int fd,
                     Binc::IODevice &output,
                     std::vector<std::string> headers,
                     bool includeheaders,
                     unsigned int startoffset,
                     unsigned int length,
                     std::string &storage) const;
    void printDoc(int fd,
                  Binc::IODevice &output,
                  unsigned int startoffset,
                  unsigned int length) const;
    virtual void clear() const;

    const MimePart *getPart(const std::string &findpart,
                            std::string genpart,
                            FetchType fetchType = FetchBody) const;
    virtual int parseOnlyHeader(const std::string &toboundary) const;
    virtual int parseFull(const std::string &toboundary, int &boundarysize) const;

    MimePart();
    virtual ~MimePart();
  };

  class MimeDocument : public MimePart {
  private:
    mutable bool headerIsParsed;
    mutable bool allIsParsed;

  public:
    void parseOnlyHeader(int fd) const;
    void parseFull(int fd) const;
    void clear() const;

    inline bool isHeaderParsed()
    {
      return headerIsParsed;
    }

    inline bool isAllParsed()
    {
      return allIsParsed;
    }

    MimeDocument();
    ~MimeDocument();
  };

};

#endif