package Selenium::Firefox::Binary;

# ABSTRACT: Subroutines for locating and properly initializing the Firefox Binary
use File::Which qw/which/;
use Selenium::Firefox::Profile;

require Exporter;
our @ISA = qw/Exporter/;
our @EXPORT_OK = qw/firefox_path setup_firefox_binary_env/;

sub _firefox_windows_path {
    # TODO: make this slightly less dumb
    my @program_files = (
        $ENV{PROGRAMFILES} // 'C:\Program Files',
        $ENV{'PROGRAMFILES(X86)'} // 'C:\Program Files (x86)',
    );

    foreach (@program_files) {
        my $binary_path = $_ . '\Mozilla Firefox\firefox.exe';
        return $binary_path if -x $binary_path;
    }

    # Fall back to a completely naive strategy
    warn q/We couldn't find a viable firefox.EXE; you may want to specify it via the binary attribute./;
    return which('firefox');
}

sub _firefox_darwin_path {
    my $default_firefox = '/Applications/Firefox.app/Contents/MacOS/firefox-bin';

    if (-e $default_firefox && -x $default_firefox) {
        return $default_firefox
    }
    else {
        return which('firefox-bin');
    }
}

sub _firefox_unix_path {
    # TODO: maybe which('firefox3'), which('firefox2') ?
    return which('firefox') || '/usr/bin/firefox';
}

sub firefox_path {
    my $path;
    if ($^O eq 'MSWin32') {
        $path =_firefox_windows_path();
    }
    elsif ($^O eq 'darwin') {
        $path = _firefox_darwin_path();
    }
    else {
        $path = _firefox_unix_path;
    }

    if (not -x $path) {
        die $path . ' is not an executable file.';
    }

    return $path;
}

# We want the profile to persist to the end of the session, not just
# the end of this function.
my $profile;
sub setup_firefox_binary_env {
    my ($port) = @_;

    # TODO: respect the user's profile instead of overwriting it
    $profile = Selenium::Firefox::Profile->new;
    $profile->add_webdriver($port);

    $ENV{'XRE_PROFILE_PATH'} = $profile->_layout_on_disk;
    $ENV{'MOZ_NO_REMOTE'} = '1';             # able to launch multiple instances
    $ENV{'MOZ_CRASHREPORTER_DISABLE'} = '1'; # disable breakpad
    $ENV{'NO_EM_RESTART'} = '1';             # prevent the binary from detaching from the console.log
}


1;