#!/usr/bin/perl -w
# NAME: xg2csv.pl
# AIM: Read an xgraph (*.xg) file and output it to a csv formatted file
# 2019-03-06 - add sort, and expand purpose...
# 2014-07-26 - Initial cut
use strict;
use warnings;
use File::Basename;  # split path ($name,$dir,$ext) = fileparse($file [, qr/\.[^.]*/] )
use Cwd;
my $os = $^O;
my $perl_dir = '/home/geoff/bin';
my $PATH_SEP = '/';
my $temp_dir = '/tmp';
if ($os =~ /win/i) {
    $perl_dir = 'C:\GTools\perl';
    $temp_dir = $perl_dir;
    $PATH_SEP = "\\";
}
unshift(@INC, $perl_dir);
require 'lib_utils.pl' or die "Unable to load 'lib_utils.pl' Check paths in \@INC...\n";
# log file stuff
our ($LF);
my $pgmname = $0;
if ($pgmname =~ /(\\|\/)/) {
    my @tmpsp = split(/(\\|\/)/,$pgmname);
    $pgmname = $tmpsp[-1];
}
my $outfile = $temp_dir.$PATH_SEP."temp.$pgmname.txt";
my $tmpout = $temp_dir.$PATH_SEP."tempxg2.csv";

open_log($outfile);

# user variables
my $VERS = "0.0.3 2019-03-07";
#my $VERS = "0.0.2 2014-01-13";
my $load_log = 0;
my $in_file = '';
my $verbosity = 0;
my $out_file = '';
my $xg_file = $temp_dir.$PATH_SEP."tempxg2.xg";

# ### DEBUG ###
my $debug_on = 1;
# my $def_file = 'C:\Users\user\Documents\FG\CYYR\temp\CYYR-n.xg';
my $def_file = 'C:\Users\user\Documents\FG\CYYR\temp\1958866-n.xg';
# my $def_file = 'F:\Projects\osm2xg\build\temp\temp.xg';
###my $def_file = 'F:\Projects\osm2xg\build\temp\tempdiff2.xg';

### program variables
my @warnings = ();
my $cwd = cwd();

sub VERB1() { return $verbosity >= 1; }
sub VERB2() { return $verbosity >= 2; }
sub VERB5() { return $verbosity >= 5; }
sub VERB9() { return $verbosity >= 9; }

sub show_warnings($) {
    my ($val) = @_;
    if (@warnings) {
        prt( "\nGot ".scalar @warnings." WARNINGS...\n" );
        foreach my $itm (@warnings) {
           prt("$itm\n");
        }
        prt("\n");
    } else {
        prt( "\nNo warnings issued.\n\n" ) if (VERB9());
    }
}

sub pgm_exit($$) {
    my ($val,$msg) = @_;
    if (length($msg)) {
        $msg .= "\n" if (!($msg =~ /\n$/));
        prt($msg);
    }
    show_warnings($val);
    close_log($outfile,$load_log);
    exit($val);
}


sub prtw($) {
   my ($tx) = shift;
   $tx =~ s/\n$//;
   prt("$tx\n");
   push(@warnings,$tx);
}

sub is_decimal($) {
    my $num = shift;
    return 1 if ($num =~ /^[-+]?[0-9]*\.?[0-9]+$/);
    return 0;
}

# largest number first
sub mycmp_decend {
   if ($a < $b) {
      return 1;
   }
   if ($a > $b) {
      return -1;
   }
   return 0;
}

sub mycmp_ascend {
   if ($a < $b) {
      return -1;
   }
   if ($a > $b) {
      return 1;
   }
   return 0;
}

sub process_in_file($) {
    my ($inf) = @_;
    if (! open INF, "<$inf") {
        pgm_exit(1,"ERROR: Unable to open file [$inf]\n"); 
    }
    my @lines = <INF>;
    close INF;
    my $lncnt = scalar @lines;
    prt("Processing $lncnt lines, from [$inf]...\n");
    my ($line,$ra,$lnn,$len,@arr,$cnt,$lat,$lon,$j,$tmp,$ccnt,$key,$la);
    $lnn = 0;
    my @wpts = ();
    my @nlines = ();
    my $block = 0;
    my %segments = ();
    my %colors = ();
    my @colorlist = ();
    my $had_color = 0;
    my $curr_color = "#000090";
    foreach $line (@lines) {
        push(@nlines,$line);
        chomp $line;
        $line = trim_all($line);
        $len = length($line);
        $lnn++;
        next if ($len == 0);
        @arr = space_split($line);
        $cnt = scalar @arr;
        if (($cnt >= 2) && is_decimal($arr[0]) && is_decimal($arr[1])) {
            $lon = $arr[0];
            $lat = $arr[1];
            push(@wpts, [$lon,$lat]);
        } elsif ($line =~ /^\#/) {
            # comment line
        } elsif ($line =~ /^\;/) {
            # comment line
        } elsif ($line =~ /^color/i ) {
            # color line
            $had_color = 1;
            $tmp = '';
            for ($j = 1; $j < $cnt; $j++) {
                $tmp = $arr[$j];
                if ($tmp eq '=') {
                    $j++;
                    if ($j < $cnt) {
                        $tmp = $arr[$j];
                    }
                }
                last;
            }
            if (length($tmp)) {
                if (defined $colors{$tmp}) {
                    $colors{$tmp}++;
                } else {
                    $colors{$tmp} = 1;
                    push(@colorlist,$tmp);
                }
                $curr_color = $tmp;
            }
        } elsif ($line =~ /^anno/i ) {
            # annotation line
        } elsif ($line =~ /^NEXT/i ) {
            $block++;
            # end of segment
            my @a = @nlines;
            $segments{$block} = [ $block, $had_color, \@a, $curr_color ];
            @nlines = ();   # clear accumultation
            $had_color = 0; # no color yet...
        } else {
            pgm_exit(1,"Unknown line [$line]! *** FIX ME ***\n");
        }
    }

    if (@wpts) {
        my $csv = '';
        foreach $ra (@wpts) {
            $csv .= ${$ra}[0].",".${$ra}[1].",\n";
        }
        if (length($out_file)) {
            write2file($csv,$out_file);
            prt("CSV output written to '$out_file'\n");
        } else {
            prt($csv);
            prt("No -o output file name given...\n");
        }
    }
    @arr = sort keys %colors;
    $ccnt = scalar @arr;
    $tmp = join(" ",@arr);
    $tmp .= " ord (".join(" ",@colorlist).")";


    ###@arr = sort mycmp_ascend keys(%segments);
    @arr = sort mycmp_decend keys(%segments);
    
    $cnt = scalar @arr;
    prt("Found $block ($cnt) segments, $ccnt colors...\n$tmp\n");

    my $xg = '';
    my %cdone = ();
    my @cola = ();
    foreach $key (@arr) {
        ### prt("$key\n");
        $ra = $segments{$key};
        $la = ${$ra}[2];
        $curr_color = ${$ra}[3];
        $xg .= join("", @{$la});
        if (! defined $cdone{$curr_color}) {
            push(@cola,$curr_color);
        }
        $cdone{$curr_color} = 1;
    }
    rename_2_old_bak($xg_file);
    write2file($xg,$xg_file);
    prt("New XG written to '$xg_file'\n");
    $tmp = join(" ",@cola);
    prt("Out color ord '$tmp'\n");

}

#########################################
### MAIN ###
parse_args(@ARGV);
process_in_file($in_file);
pgm_exit(0,"");
########################################

sub need_arg {
    my ($arg,@av) = @_;
    pgm_exit(1,"ERROR: [$arg] must have a following argument!\n") if (!@av);
}

sub parse_args {
    my (@av) = @_;
    my ($arg,$sarg);
    my $verb = VERB2();
    while (@av) {
        $arg = $av[0];
        if ($arg =~ /^-/) {
            $sarg = substr($arg,1);
            $sarg = substr($sarg,1) while ($sarg =~ /^-/);
            if (($sarg =~ /^h/i)||($sarg eq '?')) {
                give_help();
                pgm_exit(0,"Help exit(0)");
            } elsif ($sarg =~ /^v/) {
                if ($sarg =~ /^v.*(\d+)$/) {
                    $verbosity = $1;
                } else {
                    while ($sarg =~ /^v/) {
                        $verbosity++;
                        $sarg = substr($sarg,1);
                    }
                }
                $verb = VERB2();
                prt("Verbosity = $verbosity\n") if ($verb);
            } elsif ($sarg =~ /^l/) {
                if ($sarg =~ /^ll/) {
                    $load_log = 2;
                } else {
                    $load_log = 1;
                }
                prt("Set to load log at end. ($load_log)\n") if ($verb);
            } elsif ($sarg =~ /^o/) {
                need_arg(@av);
                shift @av;
                $sarg = $av[0];
                $out_file = $sarg;
                prt("Set out file to [$out_file].\n") if ($verb);
            } else {
                pgm_exit(1,"ERROR: Invalid argument [$arg]! Try -?\n");
            }
        } else {
            $in_file = $arg;
            prt("Set input to [$in_file]\n") if ($verb);
        }
        shift @av;
    }

    if ($debug_on) {
        prtw("WARNING: DEBUG is ON!\n");
        if (length($in_file) ==  0) {
            $in_file = $def_file;
            prt("Set DEFAULT input to [$in_file]\n");
        }
        if (length($out_file) == 0) {
            $out_file = $tmpout;
        }
    }
    if (length($in_file) ==  0) {
        pgm_exit(1,"ERROR: No input files found in command!\n");
    }
    if (! -f $in_file) {
        pgm_exit(1,"ERROR: Unable to find in file [$in_file]! Check name, location...\n");
    }
}

sub give_help {
    prt("$pgmname: version $VERS\n");
    prt("Usage: $pgmname [options] in-file\n");
    prt("Options:\n");
    prt(" --help  (-h or -?) = This help, and exit 0.\n");
    prt(" --verb[n]     (-v) = Bump [or set] verbosity. def=$verbosity\n");
    prt(" --load        (-l) = Load LOG at end. ($outfile)\n");
    prt(" --out <file>  (-o) = Write output to this file.\n");
}

# eof - template.pl