#!perl

use strict;
use warnings;

# This test was generated by Dist::Zilla::Plugin::Test::ReportPrereqs 0.027

use Test::More tests => 1;

use ExtUtils::MakeMaker;
use File::Spec;

# from $version::LAX
my $lax_version_re = qr/(?: undef | (?: (?:[0-9]+) (?: \. | (?:\.[0-9]+) (?:_[0-9]+)? )?
            |
            (?:\.[0-9]+) (?:_[0-9]+)?
        ) | (?:
            v (?:[0-9]+) (?: (?:\.[0-9]+)+ (?:_[0-9]+)? )?
            |
            (?:[0-9]+)? (?:\.[0-9]+){2,} (?:_[0-9]+)?
        )
    )/x;

# hide optional CPAN::Meta modules from prereq scanner
# and check if they are available
my $cpan_meta     = "CPAN::Meta";
my $cpan_meta_pre = "CPAN::Meta::Prereqs";
my $HAS_CPAN_META = eval "require $cpan_meta; $cpan_meta->VERSION('2.120900')" && eval "require $cpan_meta_pre"; ## no critic

# Verify requirements?
my $DO_VERIFY_PREREQS = 1;

sub _max {
  my $max = shift;
  $max = ( $_ > $max ) ? $_ : $max for @_;
  return $max;
}

sub _merge_prereqs {
  my ( $collector, $prereqs ) = @_;

  # CPAN::Meta::Prereqs object
  if ( ref $collector eq $cpan_meta_pre ) {
    return $collector->with_merged_prereqs( CPAN::Meta::Prereqs->new( $prereqs ) );
  }

  # Raw hashrefs
  for my $phase ( keys %$prereqs ) {
    for my $type ( keys %{ $prereqs->{ $phase } } ) {
      for my $module ( keys %{ $prereqs->{ $phase }{ $type } } ) {
        $collector->{ $phase }{ $type }{ $module } = $prereqs->{ $phase }{ $type }{ $module };
      }
    }
  }

  return $collector;
} ## end sub _merge_prereqs

my @include = qw(

);

my @exclude = qw(

);

# Add static prereqs to the included modules list
my $static_prereqs = do './t/00-report-prereqs.dd';

# Merge all prereqs (either with ::Prereqs or a hashref)
my $full_prereqs = _merge_prereqs( ( $HAS_CPAN_META ? $cpan_meta_pre->new : {} ), $static_prereqs );

# Add dynamic prereqs to the included modules list (if we can)
my ( $source ) = grep { -f } 'MYMETA.json', 'MYMETA.yml';
my $cpan_meta_error;
if ( $source
  && $HAS_CPAN_META
  && ( my $meta = eval { CPAN::Meta->load_file( $source ) } ) )
{
  $full_prereqs = _merge_prereqs( $full_prereqs, $meta->prereqs );
} else {
  $cpan_meta_error = $@;                # capture error from CPAN::Meta->load_file($source)
  $source          = 'static metadata';
}

my @full_reports;
my @dep_errors;
my $req_hash = $HAS_CPAN_META ? $full_prereqs->as_string_hash : $full_prereqs;

# Add static includes into a fake section
for my $mod ( @include ) {
  $req_hash->{ other }{ modules }{ $mod } = 0;
}

for my $phase ( qw(configure build test runtime develop other) ) {
  next unless $req_hash->{ $phase };
  next if ( $phase eq 'develop' and not $ENV{ AUTHOR_TESTING } );

  for my $type ( qw(requires recommends suggests conflicts modules) ) {
    next unless $req_hash->{ $phase }{ $type };

    my $title   = ucfirst( $phase ) . ' ' . ucfirst( $type );
    my @reports = [ qw/Module Want Have/ ];

    for my $mod ( sort keys %{ $req_hash->{ $phase }{ $type } } ) {
      next if $mod eq 'perl';
      next if grep { $_ eq $mod } @exclude;

      my $file = $mod;
      $file =~ s{::}{/}g;
      $file .= ".pm";
      my ( $prefix ) = grep { -e File::Spec->catfile( $_, $file ) } @INC;

      my $want = $req_hash->{ $phase }{ $type }{ $mod };
      $want = "undef" unless defined $want;
      $want = "any" if ! $want && $want == 0;

      my $req_string = $want eq 'any' ? 'any version required' : "version '$want' required";

      if ( $prefix ) {
        my $have = MM->parse_version( File::Spec->catfile( $prefix, $file ) );
        $have = "undef" unless defined $have;
        push @reports, [ $mod, $want, $have ];

        if ( $DO_VERIFY_PREREQS && $HAS_CPAN_META && $type eq 'requires' ) {
          if ( $have !~ /\A$lax_version_re\z/ ) {
            push @dep_errors, "$mod version '$have' cannot be parsed ($req_string)";
          } elsif ( ! $full_prereqs->requirements_for( $phase, $type )->accepts_module( $mod => $have ) ) {
            push @dep_errors, "$mod version '$have' is not in required range '$want'";
          }
        }
      } else {
        push @reports, [ $mod, $want, "missing" ];

        if ( $DO_VERIFY_PREREQS && $type eq 'requires' ) {
          push @dep_errors, "$mod is not installed ($req_string)";
        }
      }
    } ## end for my $mod ( sort...)

    if ( @reports ) {
      push @full_reports, "=== $title ===\n\n";

      my $ml = _max( map { length $_->[ 0 ] } @reports );
      my $wl = _max( map { length $_->[ 1 ] } @reports );
      my $hl = _max( map { length $_->[ 2 ] } @reports );

      if ( $type eq 'modules' ) {
        splice @reports, 1, 0, [ "-" x $ml, "", "-" x $hl ];
        push @full_reports, map { sprintf( "    %*s %*s\n", -$ml, $_->[ 0 ], $hl, $_->[ 2 ] ) } @reports;
      } else {
        splice @reports, 1, 0, [ "-" x $ml, "-" x $wl, "-" x $hl ];
        push @full_reports, map { sprintf( "    %*s %*s %*s\n", -$ml, $_->[ 0 ], $wl, $_->[ 1 ], $hl, $_->[ 2 ] ) } @reports;
      }

      push @full_reports, "\n";
    }
  } ## end for my $type ( qw(requires recommends suggests conflicts modules))
} ## end for my $phase ( qw(configure build test runtime develop other))

if ( @full_reports ) {
  diag "\nVersions for all modules listed in $source (including optional ones):\n\n", @full_reports;
}

if ( $cpan_meta_error || @dep_errors ) {
  diag "\n*** WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING ***\n";
}

if ( $cpan_meta_error ) {
  my ( $orig_source ) = grep { -f } 'MYMETA.json', 'MYMETA.yml';
  diag "\nCPAN::Meta->load_file('$orig_source') failed with: $cpan_meta_error\n";
}

if ( @dep_errors ) {
  diag join( "\n", "\nThe following REQUIRED prerequisites were not satisfied:\n", @dep_errors, "\n" );
}

pass;

# vim: ts=4 sts=4 sw=4 et: