# -*- cperl -*-

use strict;
use warnings;

use Test::More;

use Config::AutoConf;

END {
  foreach my $f (<config*.*>) {
    -e $f and unlink $f;
  }
}

## OK, we really hope people have sdtio.h around
ok(Config::AutoConf->check_header("stdio.h")) or plan skip_all => "No working compile environment";
ok(!Config::AutoConf->check_header("astupidheaderfile.h"));
is(Config::AutoConf->check_headers("astupidheaderfile.h", "stdio.h"), "stdio.h");

# check several headers at once
my $ac = Config::AutoConf->new( logfile => "config2.log" );
eval { $ac->check_default_headers(); };
ok( !$@, "check_default_headers" ) or diag( $@ );
## we should find at least a stdio.h ...
note( "Checking for cache value " . $ac->_cache_name( "stdio.h" ) );
ok( $ac->cache_val( $ac->_cache_name( "stdio.h" ) ), "found stdio.h" );

# some complex header tests for wide OS support
eval { $ac->check_dirent_header(); };
ok( !$@, "check_dirent_header" ) or diag( $@ );

# check predeclared symbol
# as we test a perl module, we expect perl.h available and suitable
my $include_perl = "#include <EXTERN.h>\n#include <perl.h>";

SKIP: {
    skip "Constants not defined on this Perl version", 2 if $] <= 5.01000;

    ok $ac->check_decl( "PERL_VERSION_STRING", undef, undef, $include_perl ),
      "PERL_VERSION_STRING declared";

    ok $ac->check_decls( [qw(PERL_API_REVISION PERL_API_VERSION PERL_API_SUBVERSION)],
                         undef, undef, $include_perl ),
                           "PERL_API_* declared";
}

ok $ac->check_decl( "perl_parse(PerlInterpreter *, XSINIT_t , int , char** , char** )",
                    undef, undef, $include_perl ),
  "perl_parse() declared";

# check declared types
ok $ac->check_type( "I32", undef, undef, $include_perl ),
  "I32 is valid type";

ok $ac->check_types( ["SV *", "AV *", "HV *" ], undef, undef, $include_perl ),
  "[SAH]V * are valid types" ;

# check size of perl types
my $typesize = $ac->check_sizeof_type( "I32", undef, undef, $include_perl );
ok $typesize, "I32 has size of " . ($typesize ? $typesize : "n/a") . " bytes";

ok $ac->check_sizeof_types( ["I32", "SV *", "AV", "HV *", "SV.sv_refcnt" ], undef, undef, $include_perl ),
  "Could determined sizes for I32, SV *, AV, HV *, SV.sv_refcnt" ;

my $compute = $ac->compute_int( "-sizeof(I32)", undef, $include_perl );
cmp_ok( $compute, "==", 0-$typesize, "Compute (-sizeof(I32))" );

# check perl data structure members
ok $ac->check_member( "struct av.sv_any", undef, undef, $include_perl ),
  "have struct av.sv_any member";

ok $ac->check_members( ["struct hv.sv_any", "struct STRUCT_SV.sv_any"],
                       undef, undef, $include_perl ),
  "have struct hv.sv_any and struct STRUCT_SV.sv_any members";

# check aligning
ok $ac->check_alignof_type( "I32", undef, undef, $include_perl ),
  "Align of I32";
ok $ac->check_alignof_type( "SV.sv_refcnt", undef, undef, $include_perl ),
  "Align of SV.sv_refcnt";
ok $ac->check_alignof_types( ["I32", "U32", "AV", "HV *", "SV.sv_refcnt" ], undef, undef, $include_perl ),
  "Could determined sizes for I32, U32, AV, HV *, SV.sv_refcnt" ;

Config::AutoConf->write_config_h();
ok( -f "config.h", "default config.h created" );
my $fsize;
ok( $fsize = (stat("config.h"))[7], "config.h contains content" );
$ac->write_config_h();
ok( -f "config.h", "default config.h created" );
cmp_ok( (stat("config.h"))[7], ">", $fsize, "2nd config.h is bigger than first (more checks made)" );

my ($fh, $fbuf, $dbuf);
open( $fh, "<", "config.h" );
{ local $/; $fbuf = <$fh>; }
close( $fh );

if ($] < 5.008) {
  require IO::String;
  $fh = IO::String->new($dbuf);
}
else {
  open( $fh, "+>", \$dbuf );
}
$ac->write_config_h( $fh );
close( $fh );
$fh = undef;

cmp_ok( $dbuf, "eq", $fbuf, "file and direct write computes equal" );

TODO: {
  -f "META.yml" or $ENV{AUTOMATED_TESTING} = 1;
  local $TODO = "Quick fix: TODO - analyse diag later" unless $ENV{AUTOMATED_TESTING};
  my @old_logfh;
  $dbuf = "";

  if ($] < 5.008) {
    $fh = IO::String->new($dbuf);
  }
  else {
    open( $fh, "+>", \$dbuf );
  }
  @old_logfh = @{$ac->{logfh}};
  $ac->add_log_fh($fh);
  cmp_ok(scalar @{$ac->{logfh}}, "==", 2, "Successfully added 2nd loghandle");

  ok( $ac->check_compile_perl_api(), "Could compile perl extensions" ) or diag($dbuf);
  scalar @old_logfh and $ac->delete_log_fh( $fh );
  scalar @old_logfh and is_deeply(\@old_logfh, $ac->{logfh}, "add_log_fh/delete_log_fh");
  defined $fh and close($fh);
  $fh = undef;
}

SCOPE: {
  local $ENV{ac_cv_insane_h} = "/usr/include/insane.h";
  my $insane_h = $ac->check_header("insane.h");
  is($insane_h, $ENV{ac_cv_insane_h}, "Cache override for header files work");
}

done_testing;