#!/usr/bin/env perl

# Copyright (c) 2025, R. W. Rodolico
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
#    list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# freebsd_pci
# FreeBSD PCI devices from pciconf.
#
# Revision History:
# 2026-10-18 Claude v1.0.0 new sensor, split from unix_pci (bug 210)

package freebsd_pci;

use strict;
use warnings;
use version;
our $VERSION = version->declare('v1.0.0');

use FindBin;
use File::Spec;
use lib File::Spec->catdir($FindBin::Bin), File::Spec->catdir("$FindBin::Bin/..");
use library qw(:all);

my $CATEGORY = 'pci';
#######################################################
#
# parsePciconf( $text )
#
# Parses FreeBSD pciconf -lv output using F3 selector mapping.
#
# Parameters:
#   $text - text from pciconf -lv
#
# Returns:
#   array reference of output lines
#
# Side Effects:
#   none
#
#######################################################
sub parsePciconf {
   my $text = shift;
   my @out;
   my $selector = '';

   foreach my $line (split(/\n/, defined($text) ? $text : '')) {
      if ($line =~ /^([^@\s]+)@([^\s]+)\s+(.+)$/) {
         my ($driver, $slot, $rest) = ($1, $2, $3);
         $selector = trim($slot);
         next if $selector eq '';
         push @out, "$CATEGORY\t$selector\tdriver\t$driver";

         while ($rest =~ /(class|rev|hdr|card|chip|vendor|device|subvendor|subdevice)=([^\s]+)/g) {
            my ($k, $v) = ($1, $2);
            $k = 'revision' if $k eq 'rev';
            $k = 'header' if $k eq 'hdr';
            push @out, "$CATEGORY\t$selector\t$k\t$v";
         }
         next;
      }

      next if $selector eq '';
      if ($line =~ /^\s*([a-zA-Z_]+)\s*=\s*(.+)$/) {
         my ($k, $v) = (trim($1), trim($2));
         push @out, "$CATEGORY\t$selector\t$k\t$v" if $k ne '' && $v ne '';
      }
   }

   return \@out;
}

#######################################################
#
# main()
#
# Emits pci keys.
#
# Parameters:
#   none
#
# Returns:
#   integer exit status (1 wrong OS, 2 not applicable)
#
# Side Effects:
#   runs pciconf, writes STDOUT/STDERR
#
#######################################################
sub main {
   if (!checkOS({ 'freebsd' => undef })) {
      print STDERR "unsupported os\n";
      return 1;
   }
   unless (validCommandOnSystem({ 'pciconf' => undef })) {
      print STDERR "pciconf not found\n";
      return 2;
   }
   my @out = @{parsePciconf(runCommand('pciconf', '-lv'))};
   print join("\n", @out), "\n" if @out;
   return @out ? 0 : 1;
}

exit main() unless caller;
1;