--  Local backup Ada shell script.
--
--  This HAC script detects saves the essential files of Zip-Ada
--  into a Zip-ball.
--
--  #!/usr/bin/env hac
--  A "shebang" for Unix/Linux, such as "#!/usr/bin/env hac" can be
--  added on the top line of this file.
--  HAC will ignore it, but GNAT won't like it (that's normal).
--
--  This is a HAC script *and* an Ada program.
--  How to run it is your choice.
--
--  Usage with the HAC command-line tool :
--
--    hac save.hac
--
--  The HAC (HAC Ada Compiler) command-line tool can be found @
--    https://hacadacompiler.sourceforge.io/ ,
--    https://github.com/zertovitch/hac

--  This program works both with HAC (command: hac save.hac)
--  and a full Ada compiler like GNAT, and that on different
--  Operating Systems: Linux and Windows at least.
--
--  The extension for the main procedure is a free choice.
--  We choose ".hac" so we can associate the ".hac" files by
--  default with hac.exe on Windows, for Explorer *and* command-line!
--    Explorer: double-click / hit Return on "save.hac".
--    Cmd / PowerShell: type "save.hac" and hit Return.

with HAT;

procedure Save is

  use HAT;

  function Nice_Date (with_intraday : Boolean) return VString is
    t1 : constant Time := Clock;
    day_secs, day_mins : Integer;
    just_day : VString;
    --
    function Two_Digits (x : Integer) return VString is
    begin
      if x < 10 then
        return "0" & Image (x);
      else
        return Image (x);
      end if;
    end Two_Digits;
    --
  begin
    day_secs := Integer (Seconds (t1));
    day_mins := day_secs / 60;
    just_day := +"" &  --  VString concatenation
      Year (t1)  & '-' &
      Two_Digits (Month (t1)) & '-' &
      Two_Digits (Day (t1));
    if with_intraday then
      return just_day & "--" &
      Two_Digits (day_mins / 60) & '-' &
      Two_Digits (day_mins mod 60) & '-' &
      Two_Digits (day_secs mod 60);
    else
      return just_day;
    end if;
  end Nice_Date;

  root, ada_sources, doc, tools, extras, scripts, files : VString;
  zip_res : Integer;
  sep : constant Character := Directory_Separator;

begin
  Put_Line ("Save date: " & Nice_Date (True));
  Put_Line ("Current directory: " & Current_Directory);
  Put_Line ("-----");
  root := Tail_After_Match (Current_Directory, sep);

  Set_Directory ("..");

  files := root & "/*.gpr " &
           root & "/*.prj " &
           root & "/*.pra ";

  ada_sources := root & "/zip_lib/*.ad* " &
                 root & "/test/*.ad* " &
                 root & "/demo/*.ad* " &
                 --
                 root & "/trained/*.ad* " &
                 root & "/trained/*.gpr ";

  doc    := root & "/doc/*.txt " &
            root & "/doc/za*.xls " &
            root & "/doc/za*.pdf ";

  tools := root & "/tools/*.ad* " &
           root & "/tools/rez*.cmd " &
           root & "/tools/verif.* " &
           root & "/tools/adactl*.cmd ";

  extras := root & "/extras/*.ad* " &
            root & "/extras/*.rc " &
            root & "/extras/*.rbj " &
            root & "/extras/*.ico " &
            root & "/extras/*.pl " &
            root & "/extras/w*.cmd ";

  scripts := root & "/*_za.cmd " &
             root & "/*.hac " &
             root & "/*.sh " &
             root & "/test/test*.cmd " &
             root & "/test/*.hac " &
             root & "/test/bench*.cmd " &
             root & "/test/prof.cmd ";

  files := files & ada_sources & doc & tools & extras & scripts;

  --  The ZipAda command-line tool can be built or downloaded
  --  from the project Zip-Ada @
  --    https://unzip-ada.sourceforge.io/ ,
  --    https://github.com/zertovitch/zip-ada
  --  or from ALIRE (Ada LIbrary REpository) @ https://alire.ada.dev/
  --
  Shell_Execute ("zipada -ep2 " & root & sep & root & '-' & Nice_Date (True) & "- " & files, zip_res);
  if zip_res = 0 then
    Put_Line ("Zip archive creation successful");
  else
    Put_Line ("Zip archive creation failed");
  end if;

  Set_Directory (root);

  Put ("Press Return ");
  Skip_Line;

end Save;