template SiSUpod() {
  private import
    std.algorithm,
    std.array,
    std.container,
    std.digest.sha,
    std.exception,
    std.file,
    std.getopt,
    std.json,
    std.outbuffer,
    std.path,
    std.process,
    std.range,
    std.regex,
    std.stdio,
    std.string,
    std.traits,
    std.typecons,
    std.uni,
    std.utf,
    std.zip,
    std.conv : to;
  import
    create_zip_file,
    defaults,
    output_rgx,
    output_xhtmls;
  void SiSUpod(T)(T doc_matters) {
    debug(asserts) {
      // static assert(is(typeof(doc_matters) == tuple));
    }
    mixin SiSUoutputRgxInit;
    mixin SiSUpaths;
    auto pth_sisupod = SiSUpodPathsZipped();
    auto pth_sisupod_filesystem = SiSUpodPathsFilesystemArchive();
    mixin SiSUlanguageCodes;
    auto lang = Lang();
    auto rgx = Rgx();
    assert (doc_matters.source_filename.match(rgx.src_fn));
    try {
      /+ create directory structure +/
      if (!exists(pth_sisupod_filesystem.doc(doc_matters.source_filename))) {
        pth_sisupod_filesystem.doc(doc_matters.source_filename).mkdirRecurse;
      }
      if (!exists(pth_sisupod_filesystem.conf(doc_matters.source_filename))) {
        pth_sisupod_filesystem.conf(doc_matters.source_filename).mkdirRecurse;
      }
      if (!exists(pth_sisupod_filesystem.css(doc_matters.source_filename))) {
        pth_sisupod_filesystem.css(doc_matters.source_filename).mkdirRecurse;
      }
      if (!exists(pth_sisupod_filesystem.image(doc_matters.source_filename))) {
        pth_sisupod_filesystem.image(doc_matters.source_filename).mkdirRecurse;
      }
      if (!exists(pth_sisupod_filesystem.doc_lng(doc_matters.source_filename, doc_matters.language))) {
        pth_sisupod_filesystem.doc_lng(doc_matters.source_filename, doc_matters.language).mkdirRecurse;
      }
      debug(sisupod) {
        writeln(__LINE__, ": ",
          doc_matters.source_filename, " -> ",
          pth_sisupod_filesystem.fn_doc(
          doc_matters.source_filename,
          doc_matters.language
        ));
      }
      auto zip = new ZipArchive();
      auto fn_sisupod = pth_sisupod.sisupod_filename(doc_matters.source_filename);
      { /+ bundle images +/
        foreach (image; doc_matters.image_list) {
          debug(sisupodimages) {
            writeln(
              "_sisu/image/", image, " -> ",
              pth_sisupod.image(doc_matters.source_filename), "/", image
            );
          }
          auto fn_src = "_sisu/image/"~ image;
          auto fn_out =  pth_sisupod.image(doc_matters.source_filename).to!string ~ "/" ~ image;
          auto fn_out_filesystem =  pth_sisupod_filesystem.image(doc_matters.source_filename).to!string ~ "/" ~ image;
          if (exists(fn_src)) {
            fn_src.copy(fn_out_filesystem);
            {
              auto zip_arc_member_file = new ArchiveMember();
              zip_arc_member_file.name = fn_out;
              auto zip_data = new OutBuffer();
              zip_data.write(cast(char[]) ((fn_src).read));
              zip_arc_member_file.expandedData = zip_data.toBytes();
              zip.addMember(zip_arc_member_file);
              createZipFile!()(pth_sisupod.sisupod_filename(fn_src), zip.build());
            }
          }
        }
      }
      { /+ bundle sisu_document_make +/
        auto fn_src = "_sisu/sisu_document_make"; // check (_sisu/sisu_document_make)
        auto fn_out = pth_sisupod.conf(doc_matters.source_filename).to!string ~ "/" ~ "sisu_document_make";
        auto fn_out_filesystem = pth_sisupod_filesystem.conf(doc_matters.source_filename).to!string ~ "/" ~ "sisu_document_make";
        if (exists(fn_src)) {
          fn_src.copy(fn_out_filesystem);
          {
            auto zip_arc_member_file = new ArchiveMember();
            zip_arc_member_file.name = fn_out;
            auto zip_data = new OutBuffer();
            zip_data.write((fn_src).readText);
            zip_arc_member_file.expandedData = zip_data.toBytes();
            zip.addMember(zip_arc_member_file);
            createZipFile!()(pth_sisupod.sisupod_filename(fn_src), zip.build());
          }
        }
      }
      { /+ bundle primary file +/
        auto fn_src = doc_matters.source_filename;
        auto fn_out = pth_sisupod.fn_doc(doc_matters.source_filename, doc_matters.language).to!string;
        auto fn_out_filesystem = pth_sisupod_filesystem.fn_doc(doc_matters.source_filename, doc_matters.language).to!string;
        if (exists(fn_src)) {
          fn_src.copy(fn_out_filesystem);
          {
            auto zip_arc_member_file = new ArchiveMember();
            zip_arc_member_file.name = fn_out;
            auto zip_data = new OutBuffer();
            zip_data.write((fn_src).readText);
            zip_arc_member_file.expandedData = zip_data.toBytes();
            zip.addMember(zip_arc_member_file);
            createZipFile!()(pth_sisupod.sisupod_filename(fn_src), zip.build());
          }
        }
      }
      { /+ bundle insert files +/
        if (doc_matters.file_insert_list.length > 0) {
          foreach (insert_file; doc_matters.file_insert_list) {
            debug(sisupod) {
              writeln(
                insert_file, " -> ",
                pth_sisupod.fn_doc_insert(
                  doc_matters.source_filename,
                  insert_file,
                  doc_matters.language
              ));
            }
            auto fn_src = insert_file;
            auto fn_out = pth_sisupod.fn_doc_insert(
              doc_matters.source_filename,
              insert_file,
              doc_matters.language
            ).to!string;
            auto fn_out_filesystem = pth_sisupod_filesystem.fn_doc_insert(
              doc_matters.source_filename,
              insert_file,
              doc_matters.language
            ).to!string;
            if (exists(fn_src)) {
              fn_src.copy(fn_out_filesystem);
              {
                auto zip_arc_member_file = new ArchiveMember();
                zip_arc_member_file.name = insert_file;
                auto zip_data = new OutBuffer();
                zip_data.write((fn_src).readText);
                zip_arc_member_file.expandedData = zip_data.toBytes();
                zip.addMember(zip_arc_member_file);
                createZipFile!()(pth_sisupod.sisupod_filename(fn_src), zip.build());
              }
            }
          }
        }
      }
      if (exists(fn_sisupod)) {
        try {
          auto data = (cast(byte[]) (fn_sisupod).read);
          writefln("%-(%02x%) %s", data.sha256Of, fn_sisupod);
          debug(sisupod) {
            try {
              auto zipped = new ZipArchive((fn_sisupod).read);
              foreach (filename, member; zipped.directory) {
                auto data = zipped.expand(member);
                writeln("> ", filename, " length ", data.length); // filename == member.name
                // Use data
              }
            }
            catch (ZipException ex) {
              // Handle errors
            }
            if (doc_matters.source_filename == "en/the_wealth_of_networks.yochai_benkler.sst") {
              assert(
                ((data).sha256Of).toHexString
                == "DDE0013C13C6A4F06D4BE72087E2CDEF47697CA38A6A2D65BA7207DB6B144271",
                "\nsisupod: sha256 value for "
                ~ doc_matters.source_filename
                ~ " has changed, is now: "
                ~ ((data).sha256Of).toHexString
              );
            }
            if (doc_matters.source_filename == "en/sisu_markup_stress_test.sst") {
              assert(
                ((data).sha256Of).toHexString
                == "112C0AEDD2518A1803D91A7CF5785274A3116C0779A631782D0C0813B212C68A",
                "\nsisupod: sha256 value for "
                ~ doc_matters.source_filename
                ~ " has changed, is now: "
                ~ ((data).sha256Of).toHexString
              );
            }
          }
        }
          catch (ErrnoException ex)
        {
          // Handle errors
        }
      }
      
    }
    catch (ErrnoException ex) {
      // Handle error
    }
  }
}