#!/usr/bin/perl
use strict;
#  Allow bare words, so &ade_err_error() calls look nicer.
no strict 'subs';
use lib substr `ade-config ade_include_prefix`,0,-1;

use ADE;
use Getopt::Long qw(:config no_ignore_case);

my($subversion_string) = '# $HeadURL$ $LastChangedRevision$';

my(%defined_errors) = (
    ade_err_misc        => { fmt => "%s" },
);

my(@config_hasharray) = (
);

sub adeperlf
{
    my($errstack_ref) = @_;
    my($rc, $listpaths, $optval, $perlcode);

    #
    #  Load defaults, command line options and stuff from config file
    #

    if (($rc=&load_options_and_config_file($errstack_ref)) != $ade_err_ok) {
        return($rc);
    }
    &ade_err_debug($errstack_ref, 10, "adeperlf: config loaded");

    (!$ARGV[0] || $ARGV[1]) && &ade_msg_usage($errstack_ref, \&app_usage, 1);
    $perlcode = $ARGV[0];

    &ade_err_debug($errstack_ref, 10, "main: \$perlcode=$perlcode");
    $rc = eval $perlcode;
    if (!defined($rc)) {
        chomp($@);
        &ade_err_error($errstack_ref, ade_err_misc, "code failed to execute ($@)");
        return($ade_err_fail);
    } elsif ($rc != 0) {
        &ade_err_error($errstack_ref, ade_err_misc, "code executed, but returned non-zero ($rc)");
        return($rc);
    }
    #  Ensure sensible return code
    return($ade_err_ok);
}

sub app_version
{
    my($errstack_ref, $version_ref) = @_;
    my($rc);

    if (($rc=&ade_tmf_extractversionfromsvnstring($errstack_ref, $subversion_string, $version_ref)) != $ade_err_ok) {
        &ade_err_error($errstack_ref, ade_err_internal, "app_version: ade_tmf_extractversionfromsvnstring failed");
        return($ade_err_fail);
    }

    return($ade_err_ok);
}

sub app_usage
{
    print "Usage:   $ade_app_progname [ <options> ] <perlcode>\n";
    print "\n";
    #  standard options
    print "Options: -V | --version           display program version\n";
    print "         -v | --verbose           verbose\n";
    print "         -d | --debug=<level>     set debug level\n";
    print "         -h | --help              display this text\n";
    print "         -p | --list-paths        list used paths\n";
    #  application-specific option
    print "\n";

    return($ade_err_ok);
}

sub app_listpaths
{
    my($errstack_ref) = @_;

    return($ade_err_ok);
}

sub load_options_and_config_file
{
    my($errstack_ref) = @_;
    my($key, $old_sigwarn_handler, $i);

    #
    #  Unset everything.
    #
    #  (This function needs to be re-entrant;it can be called when the
    #  program starts, but it can also be called when SIGHUP is recieved.)
    #

    for ($i=0; $i<=$#config_hasharray; $i++) {
        undef ${$config_hasharray[$i]{var}};
    }

    #
    #  Process command line options (top priority).
    #

    #  Redirect GetOptions's alerts to our alerter.
    $old_sigwarn_handler = $SIG{'__WARN__'};
    $SIG{'__WARN__'} = sub { &ade_msg_usage($errstack_ref, \&app_usage, 1); };
    Getopt::Long::GetOptions(
        #  Standard opts
        "V|version"       => sub { &ade_msg_version($errstack_ref, \&app_version); },
        "v|verbose"       => sub { &ade_err_resetstack(level => 3); },
        "d|debug=i"       => sub { &ade_err_resetstack(level => $_[1]); },
        "h|help"          => sub { &ade_msg_usage($errstack_ref, \&app_usage, 0); },
        "p|list-paths"    => sub { &ade_msg_listpaths($errstack_ref, \&app_listpaths); },
        #  Application specific opts
    );
    $SIG{'__WARN__'} = $old_sigwarn_handler;

    #
    #  Assign defaults (third priority therefore done third)
    #

    for ($i=0; $i<=$#config_hasharray; $i++) {
        #  Skip using default if variable already has value
        next if (defined(${$config_hasharray[$i]{var}}));
        #  Skip using default if there is no default!
        next if (!defined($config_hasharray[$i]{dfl}));
        #  Use default
        ${$config_hasharray[$i]{var}} = $config_hasharray[$i]{dfl};
    }

    #
    #  Derivations
    #
    #  Some values depend on others. Work those out now.
    #
    #  Note that the order in which they are worked out is important
    #  (e.g. mail_log_dir needs to be determined *before* mail_log_file
    #  because if the second is not absolute then the first is used as
    #  a prefix). Hence the 'sort' and 'if (key is ...) elsif (key is ..)'
    #

#    foreach $key (sort { if (!defined($a{pri})) { return(1); } elsif (!defined($b{pri})) { return(-1); } else { return ($a{pri} <=> $b{pri}); }} @config_hasharray) {
#        &ade_err_debug($errstack_ref, 10, "load_options_and_config_file: key: $key");
#        if ($key =~ /mail_retr_port/ && !defined(${$confighash_map{$key}{var}})) {
#            ${$confighash_map{$key}{var}} = (${$confighash_map{mail_retr_method}{var}} eq "IMAP")
#? 143 : 110;
#        } elsif ($key =~ /mail_retr_(username|password)/ && !defined(${$confighash_map{$key}{var}}) && ${$confighash_map{mail_retr_authenticate}{var}} eq "NONE") {
#            #  Put dummy text in so that the 'is everything set?' test below passes.
#            #  Put dummy text in so that the 'is everything set?' test below passes.
#            ${$confighash_map{$key}{var}} = "unused";
#        } elsif ($key =~ /mail_send_(username|password)/ && !defined(${$confighash_map{$key}{var}}) && ${$confighash_map{mail_send_authenticate}{var}} eq "NONE") {
#            #  Put dummy text in so that the 'is everything set?' test below passes.
#            ${$confighash_map{$key}{var}} = "unused";
#        } elsif ($key =~ /mail_.*_dir/) {
#            #  If a directtory specification is not absolute, make it so.
#            ${$confighash_map{$key}{var}} =~ s/^(?!\/)/getcwd."\/"/e;
#        } elsif ($key =~ /mail_lock_file/) {
#            #  If lock file not absolute, make it so.
#            ${$confighash_map{$key}{var}} =~ s/^(?!\/)/$lock_dir\//;
#        } elsif ($key =~ /mail_log_file/) {
#            #  If log file not absolute, make it so.
#            ${$confighash_map{$key}{var}} =~ s/^(?!\/)/$log_dir\//;
#        } elsif ($key =~ /mail_(retr|send)_mbox_file/) {
#            #  If log file not absolute, make it so.
#            ${$confighash_map{$key}{var}} =~ s/^(?!\/)/$log_dir\//;
#        } elsif ($key =~ /mail_(status|stats_archive)_table/) {
#            #  If status table not absolute, make it so.
#            ${$confighash_map{$key}{var}} =~ s/^(?!\/)/$state_dir\//;
#        }
#    }

    #
    #  Verify that everything is now set.
    #

    for ($i=0; $i<=$#config_hasharray; $i++) {
        next if (defined(${$config_hasharray[$i]{var}}));
        &ade_err_error($errstack_ref, ade_err_undefined, $config_hasharray[$i]{dsc}, "configuration parameter");
        return($ade_err_fail);
    }

    #
    #  Miscellaneous sanity checks
    #

    #
    #  If we get this far everything is ok.
    #

    return($ade_err_ok);
}


&ade_gep_main(\&adeperlf);