use strict;
use warnings;
use Test::More;
use Protobuf;
use Protobuf::DescriptorPool;
use Protobuf::ClassGenerator;
use Time::Piece;

# 1. Load descriptors including WKTs
my $pool = Protobuf::DescriptorPool->generated_pool;
my $desc_file = 't/data/wkt_descriptor.bin';
open my $fh, '<:raw', $desc_file or die "Can't open $desc_file: $!";
my $serialized = do { local $/; <$fh> };
close $fh;

# This should trigger class generation for WKTs in the set
$pool->add_serialized_file_descriptor_set($serialized);

# 2. Test Timestamp
my $ts = Google::Protobuf::Timestamp::Timestamp->new();
isa_ok($ts, 'Google::Protobuf::Timestamp::Timestamp');
can_ok($ts, qw(seconds nanos to_iso8601 from_time_piece));

$ts->seconds(1234567890);
$ts->nanos(0);
is($ts->to_iso8601, '2009-02-13T23:31:30Z', "Timestamp to_iso8601 works");

# 3. Test Duration
my $dur = Google::Protobuf::Duration::Duration->new();
$dur->from_seconds(123.456);
is($dur->seconds, 123, "Duration seconds correct");
is($dur->nanos, 456_000_000, "Duration nanos correct");
is($dur->to_seconds, 123.456, "Duration to_seconds roundtrip works");

# 4. Test Struct/Value/ListValue
my $struct = Google::Protobuf::Struct::Struct->new();
$struct->from_perl({
    a => 1,
    b => "hello",
    c => [1, 2, { d => 4 }],
    e => undef,
    f => 1, # bool logic test?
});

my $perl = $struct->to_perl;
is($perl->{a}, 1, "Struct member 'a' correct");
is($perl->{b}, 'hello', "Struct member 'b' correct");
is(ref($perl->{c}), 'ARRAY', "Struct member 'c' is ARRAY");
is($perl->{c}->[2]->{d}, 4, "Deep struct member correct");
ok(!defined($perl->{e}), "Null value preserved");

TODO: {
    local $TODO = 'Implement VPP-Style SIMD WKT Batch Conversion';
    ok(0, 'Massive population of WKTs from Perl structures achieves world-class throughput');
}

TODO: {
    local $TODO = 'Implement Zero-Copy WKT Projections';
    ok(0, 'Large Struct fields manipulated via mmap-backed scalars without memory copies');
}

TODO: {
    local $TODO = 'Implement Self-Healing WKT Consistency';
    ok(0, 'Internal auditor detects and reports corruption in reified WKT objects');
}

done_testing();
