//
// Licensed under Apache License v2.0.  See the file "LICENSE" for more
// information.
//

#ifndef _CUPS_FILTERS_PDFTOPDF_QPDF_PDFTOPDF_PROCESSOR_H
#define _CUPS_FILTERS_PDFTOPDF_QPDF_PDFTOPDF_PROCESSOR_H

#include "pdftopdf-processor-private.h"
#include <qpdf/QPDF.hh>

class _cfPDFToPDFQPDFPageHandle : public _cfPDFToPDFPageHandle {
 public:
  virtual _cfPDFToPDFPageRect get_rect() const;
  virtual void add_border_rect(const _cfPDFToPDFPageRect &rect,
			       pdftopdf_border_type_e border, float fscale);
  virtual void add_subpage(const std::shared_ptr<_cfPDFToPDFPageHandle> &sub,
			   float xpos, float ypos, float scale,
			   const _cfPDFToPDFPageRect *crop=NULL);
  virtual void mirror();
  virtual void rotate(pdftopdf_rotation_e rot);
  virtual void add_label(const _cfPDFToPDFPageRect &rect,
			 const std::string label);
  virtual pdftopdf_rotation_e crop(const _cfPDFToPDFPageRect &cropRect,
				   pdftopdf_rotation_e orientation,
				   pdftopdf_rotation_e param_orientation,
				   pdftopdf_position_e xpos,
				   pdftopdf_position_e ypos,
				   bool scale, bool autorotate,
				   pdftopdf_doc_t *doc);
  virtual bool is_landscape(pdftopdf_rotation_e orientation);
  void debug(const _cfPDFToPDFPageRect &rect, float xpos, float ypos);
 private:
  bool is_existing() const;
  QPDFObjectHandle get(); // only once!
 private:
  friend class _cfPDFToPDFQPDFProcessor;
  // 1st mode: existing
  _cfPDFToPDFQPDFPageHandle(QPDFObjectHandle page, int orig_no = -1);
  QPDFObjectHandle page;
  int no;

  // 2nd mode: create new
  _cfPDFToPDFQPDFPageHandle(QPDF *pdf, float width, float height);
  std::map<std::string,QPDFObjectHandle> xobjs;
  std::string content;

  pdftopdf_rotation_e rotation;
};

class _cfPDFToPDFQPDFProcessor : public _cfPDFToPDFProcessor {
 public:
  virtual bool load_file(FILE *f,pdftopdf_doc_t *doc,
			 pdftopdf_arg_ownership_e
			   take = CF_PDFTOPDF_WILL_STAY_ALIVE,
			 int flatten_forms = 1);
  virtual bool load_filename(const char *name,
			     pdftopdf_doc_t *doc, int flatten_forms = 1);

  // TODO: virtual bool may_modify/may_print/?
  virtual bool check_print_permissions(pdftopdf_doc_t *doc);

  // virtual bool set_process(const _cfPDFToPDFProcessingParameters &param) = 0;

  virtual std::vector<std::shared_ptr<_cfPDFToPDFPageHandle>>
     get_pages(pdftopdf_doc_t *doc);
  virtual std::shared_ptr<_cfPDFToPDFPageHandle> new_page(float width,
							  float height,
							  pdftopdf_doc_t *doc);

  virtual void add_page(std::shared_ptr<_cfPDFToPDFPageHandle> page,
			bool front);

  virtual void multiply(int copies, bool collate);

  virtual void auto_rotate_all(bool dst_lscape,
			       pdftopdf_rotation_e normal_landscape);
  virtual void add_cm(const char *defaulticc, const char *outputicc);

  virtual void set_comments(const std::vector<std::string> &comments);

  virtual void emit_file(FILE *dst, pdftopdf_doc_t *doc,
			 pdftopdf_arg_ownership_e
			   take = CF_PDFTOPDF_WILL_STAY_ALIVE);
  virtual void emit_filename(const char *name, pdftopdf_doc_t *doc);

  virtual bool has_acro_form();
 private:
  void close_file();
  void start(int flatten_forms);
 private:
  std::unique_ptr<QPDF> pdf;
  std::vector<QPDFObjectHandle> orig_pages;

  bool hasCM;
  std::string extraheader;
};

#endif // !_CUPS_FILTERS_PDFTOPDF_QPDF_PDFTOPDF_PROCESSOR_H