#line 1
package Module::Install::Metadata;

use strict 'vars';
use Module::Install::Base ();

use vars qw{$VERSION @ISA $ISCORE};
BEGIN {
    $VERSION = '1.14';
    @ISA     = 'Module::Install::Base';
    $ISCORE  = 1;
}

my @boolean_keys = qw{
    sign
};

my @scalar_keys = qw{
    name
    module_name
    abstract
    version
    distribution_type
    tests
    installdirs
};

my @tuple_keys = qw{
    configure_requires
    build_requires
    requires
    recommends
    bundles
    resources
};

my @resource_keys = qw{
    homepage
    bugtracker
    repository
};

my @array_keys = qw{
    keywords
    author
};

*authors = \&author;

sub Meta              { shift          }
sub Meta_BooleanKeys  { @boolean_keys  }
sub Meta_ScalarKeys   { @scalar_keys   }
sub Meta_TupleKeys    { @tuple_keys    }
sub Meta_ResourceKeys { @resource_keys }
sub Meta_ArrayKeys    { @array_keys    }

foreach my $key ( @boolean_keys ) {
    *$key = sub {
        my $self = shift;
        if ( defined wantarray and not @_ ) {
            return $self->{values}->{$key};
        }
        $self->{values}->{$key} = ( @_ ? $_[0] : 1 );
        return $self;
    };
}

foreach my $key ( @scalar_keys ) {
    *$key = sub {
        my $self = shift;
        return $self->{values}->{$key} if defined wantarray and !@_;
        $self->{values}->{$key} = shift;
        return $self;
    };
}

foreach my $key ( @array_keys ) {
    *$key = sub {
        my $self = shift;
        return $self->{values}->{$key} if defined wantarray and !@_;
        $self->{values}->{$key} ||= [];
        push @{$self->{values}->{$key}}, @_;
        return $self;
    };
}

foreach my $key ( @resource_keys ) {
    *$key = sub {
        my $self = shift;
        unless ( @_ ) {
            return () unless $self->{values}->{resources};
            return map  { $_->[1] }
                   grep { $_->[0] eq $key }
                   @{ $self->{values}->{resources} };
        }
        return $self->{values}->{resources}->{$key} unless @_;
        my $uri = shift or die(
            "Did not provide a value to $key()"
        );
        $self->resources( $key => $uri );
        return 1;
    };
}

foreach my $key ( grep { $_ ne "resources" } @tuple_keys) {
    *$key = sub {
        my $self = shift;
        return $self->{values}->{$key} unless @_;
        my @added;
        while ( @_ ) {
            my $module  = shift or last;
            my $version = shift || 0;
            push @added, [ $module, $version ];
        }
        push @{ $self->{values}->{$key} }, @added;
        return map {@$_} @added;
    };
}

# Resource handling
my %lc_resource = map { $_ => 1 } qw{
    homepage
    license
    bugtracker
    repository
};

sub resources {
    my $self = shift;
    while ( @_ ) {
        my $name  = shift or last;
        my $value = shift or next;
        if ( $name eq lc $name and ! $lc_resource{$name} ) {
            die("Unsupported reserved lowercase resource '$name'");
        }
        $self->{values}->{resources} ||= [];
        push @{ $self->{values}->{resources} }, [ $name, $value ];
    }
    $self->{values}->{resources};
}

# Aliases for build_requires that will have alternative
# meanings in some future version of META.yml.
sub test_requires     { shift->build_requires(@_) }
sub install_requires  { shift->build_requires(@_) }

# Aliases for installdirs options
sub install_as_core   { $_[0]->installdirs('perl')   }
sub install_as_cpan   { $_[0]->installdirs('site')   }
sub install_as_site   { $_[0]->installdirs('site')   }
sub install_as_vendor { $_[0]->installdirs('vendor') }

sub dynamic_config {
    my $self  = shift;
    my $value = @_ ? shift : 1;
    if ( $self->{values}->{dynamic_config} ) {
        # Once dynamic we never change to static, for safety
        return 0;
    }
    $self->{values}->{dynamic_config} = $value ? 1 : 0;
    return 1;
}

# Convenience command
sub static_config {
    shift->dynamic_config(0);
}

sub perl_version {
    my $self = shift;
    return $self->{values}->{perl_version} unless @_;
    my $version = shift or die(
        "Did not provide a value to perl_version()"
    );

    # Normalize the version
    $version = $self->_perl_version($version);

    # We don't support the really old versions
    unless ( $version >= 5.005 ) {
        die "Module::Install only supports 5.005 or newer (use ExtUtils::MakeMaker)\n";
    }

    $self->{values}->{perl_version} = $version;
}

sub all_from {
    my ( $self, $file ) = @_;

    unless ( defined($file) ) {
        my $name = $self->name or die(
            "all_from called with no args without setting name() first"
        );
        $file = join('/', 'lib', split(/-/, $name)) . '.pm';
        $file =~ s{.*/}{} unless -e $file;
        unless ( -e $file ) {
            die("all_from cannot find $file from $name");
        }
    }
    unless ( -f $file ) {
        die("The path '$file' does not exist, or is not a file");
    }

    $self->{values}{all_from} = $file;

    # Some methods pull from POD instead of code.
    # If there is a matching .pod, use that instead
    my $pod = $file;
    $pod =~ s/\.pm$/.pod/i;
    $pod = $file unless -e $pod;

    # Pull the different values
    $self->name_from($file)         unless $self->name;
    $self->version_from($file)      unless $self->version;
    $self->perl_version_from($file) unless $self->perl_version;
    $self->author_from($pod)        unless @{$self->author || []};
    $self->license_from($pod)       unless $self->license;
    $self->abstract_from($pod)      unless $self->abstract;

    return 1;
}

sub provides {
    my $self     = shift;
    my $provides = ( $self->{values}->{provides} ||= {} );
    %$provides = (%$provides, @_) if @_;
    return $provides;
}

sub auto_provides {
    my $self = shift;
    return $self unless $self->is_admin;
    unless (-e 'MANIFEST') {
        warn "Cannot deduce auto_provides without a MANIFEST, skipping\n";
        return $self;
    }
    # Avoid spurious warnings as we are not checking manifest here.
    local $SIG{__WARN__} = sub {1};
    require ExtUtils::Manifest;
    local *ExtUtils::Manifest::manicheck = sub { return };

    require Module::Build;
    my $build = Module::Build->new(
        dist_name    => $self->name,
        dist_version => $self->version,
        license      => $self->license,
    );
    $self->provides( %{ $build->find_dist_packages || {} } );
}

sub feature {
    my $self     = shift;
    my $name     = shift;
    my $features = ( $self->{values}->{features} ||= [] );
    my $mods;

    if ( @_ == 1 and ref( $_[0] ) ) {
        # The user used ->feature like ->features by passing in the second
        # argument as a reference.  Accommodate for that.
        $mods = $_[0];
    } else {
        $mods = \@_;
    }

    my $count = 0;
    push @$features, (
        $name => [
            map {
                ref($_) ? ( ref($_) eq 'HASH' ) ? %$_ : @$_ : $_
            } @$mods
        ]
    );

    return @$features;
}

sub features {
    my $self = shift;
    while ( my ( $name, $mods ) = splice( @_, 0, 2 ) ) {
        $self->feature( $name, @$mods );
    }
    return $self->{values}->{features}
        ? @{ $self->{values}->{features} }
        : ();
}

sub no_index {
    my $self = shift;
    my $type = shift;
    push @{ $self->{values}->{no_index}->{$type} }, @_ if $type;
    return $self->{values}->{no_index};
}

sub read {
    my $self = shift;
    $self->include_deps( 'YAML::Tiny', 0 );

    require YAML::Tiny;
    my $data = YAML::Tiny::LoadFile('META.yml');

    # Call methods explicitly in case user has already set some values.
    while ( my ( $key, $value ) = each %$data ) {
        next unless $self->can($key);
        if ( ref $value eq 'HASH' ) {
            while ( my ( $module, $version ) = each %$value ) {
                $self->can($key)->($self, $module => $version );
            }
        } else {
            $self->can($key)->($self, $value);
        }
    }
    return $self;
}

sub write {
    my $self = shift;
    return $self unless $self->is_admin;
    $self->admin->write_meta;
    return $self;
}

sub version_from {
    require ExtUtils::MM_Unix;
    my ( $self, $file ) = @_;
    $self->version( ExtUtils::MM_Unix->parse_version($file) );

    # for version integrity check
    $self->makemaker_args( VERSION_FROM => $file );
}

sub abstract_from {
    require ExtUtils::MM_Unix;
    my ( $self, $file ) = @_;
    $self->abstract(
        bless(
            { DISTNAME => $self->name },
            'ExtUtils::MM_Unix'
        )->parse_abstract($file)
    );
}

# Add both distribution and module name
sub name_from {
    my ($self, $file) = @_;
    if (
        Module::Install::_read($file) =~ m/
        ^ \s*
        package \s*
        ([\w:]+)
        [\s|;]*
        /ixms
    ) {
        my ($name, $module_name) = ($1, $1);
        $name =~ s{::}{-}g;
        $self->name($name);
        unless ( $self->module_name ) {
            $self->module_name($module_name);
        }
    } else {
        die("Cannot determine name from $file\n");
    }
}

sub _extract_perl_version {
    if (
        $_[0] =~ m/
        ^\s*
        (?:use|require) \s*
        v?
        ([\d_\.]+)
        \s* ;
        /ixms
    ) {
        my $perl_version = $1;
        $perl_version =~ s{_}{}g;
        return $perl_version;
    } else {
        return;
    }
}

sub perl_version_from {
    my $self = shift;
    my $perl_version=_extract_perl_version(Module::Install::_read($_[0]));
    if ($perl_version) {
        $self->perl_version($perl_version);
    } else {
        warn "Cannot determine perl version info from $_[0]\n";
        return;
    }
}

sub author_from {
    my $self    = shift;
    my $content = Module::Install::_read($_[0]);
    if ($content =~ m/
        =head \d \s+ (?:authors?)\b \s*
        ([^\n]*)
        |
        =head \d \s+ (?:licen[cs]e|licensing|copyright|legal)\b \s*
        .*? copyright .*? \d\d\d[\d.]+ \s* (?:\bby\b)? \s*
        ([^\n]*)
    /ixms) {
        my $author = $1 || $2;

        # XXX: ugly but should work anyway...
        if (eval "require Pod::Escapes; 1") {
            # Pod::Escapes has a mapping table.
            # It's in core of perl >= 5.9.3, and should be installed
            # as one of the Pod::Simple's prereqs, which is a prereq
            # of Pod::Text 3.x (see also below).
            $author =~ s{ E<( (\d+) | ([A-Za-z]+) )> }
            {
                defined $2
                ? chr($2)
                : defined $Pod::Escapes::Name2character_number{$1}
                ? chr($Pod::Escapes::Name2character_number{$1})
                : do {
                    warn "Unknown escape: E<$1>";
                    "E<$1>";
                };
            }gex;
        }
        elsif (eval "require Pod::Text; 1" && $Pod::Text::VERSION < 3) {
            # Pod::Text < 3.0 has yet another mapping table,
            # though the table name of 2.x and 1.x are different.
            # (1.x is in core of Perl < 5.6, 2.x is in core of
            # Perl < 5.9.3)
            my $mapping = ($Pod::Text::VERSION < 2)
                ? \%Pod::Text::HTML_Escapes
                : \%Pod::Text::ESCAPES;
            $author =~ s{ E<( (\d+) | ([A-Za-z]+) )> }
            {
                defined $2
                ? chr($2)
                : defined $mapping->{$1}
                ? $mapping->{$1}
                : do {
                    warn "Unknown escape: E<$1>";
                    "E<$1>";
                };
            }gex;
        }
        else {
            $author =~ s{E<lt>}{<}g;
            $author =~ s{E<gt>}{>}g;
        }
        $self->author($author);
    } else {
        warn "Cannot determine author info from $_[0]\n";
    }
}

#Stolen from M::B
my %license_urls = (
    perl         => 'http://dev.perl.org/licenses/',
    apache       => 'http://apache.org/licenses/LICENSE-2.0',
    apache_1_1   => 'http://apache.org/licenses/LICENSE-1.1',
    artistic     => 'http://opensource.org/licenses/artistic-license.php',
    artistic_2   => 'http://opensource.org/licenses/artistic-license-2.0.php',
    lgpl         => 'http://opensource.org/licenses/lgpl-license.php',
    lgpl2        => 'http://opensource.org/licenses/lgpl-2.1.php',
    lgpl3        => 'http://opensource.org/licenses/lgpl-3.0.html',
    bsd          => 'http://opensource.org/licenses/bsd-license.php',
    gpl          => 'http://opensource.org/licenses/gpl-license.php',
    gpl2         => 'http://opensource.org/licenses/gpl-2.0.php',
    gpl3         => 'http://opensource.org/licenses/gpl-3.0.html',
    mit          => 'http://opensource.org/licenses/mit-license.php',
    mozilla      => 'http://opensource.org/licenses/mozilla1.1.php',
    open_source  => undef,
    unrestricted => undef,
    restrictive  => undef,
    unknown      => undef,
);

sub license {
    my $self = shift;
    return $self->{values}->{license} unless @_;
    my $license = shift or die(
        'Did not provide a value to license()'
    );
    $license = __extract_license($license) || lc $license;
    $self->{values}->{license} = $license;

    # Automatically fill in license URLs
    if ( $license_urls{$license} ) {
        $self->resources( license => $license_urls{$license} );
    }

    return 1;
}

sub _extract_license {
    my $pod = shift;
    my $matched;
    return __extract_license(
        ($matched) = $pod =~ m/
            (=head \d \s+ L(?i:ICEN[CS]E|ICENSING)\b.*?)
            (=head \d.*|=cut.*|)\z
        /xms
    ) || __extract_license(
        ($matched) = $pod =~ m/
            (=head \d \s+ (?:C(?i:OPYRIGHTS?)|L(?i:EGAL))\b.*?)
            (=head \d.*|=cut.*|)\z
        /xms
    );
}

sub __extract_license {
    my $license_text = shift or return;
    my @phrases      = (
        '(?:under )?the same (?:terms|license) as (?:perl|the perl (?:\d )?programming language)' => 'perl', 1,
        '(?:under )?the terms of (?:perl|the perl programming language) itself' => 'perl', 1,
        'Artistic and GPL'                   => 'perl',         1,
        'GNU general public license'         => 'gpl',          1,
        'GNU public license'                 => 'gpl',          1,
        'GNU lesser general public license'  => 'lgpl',         1,
        'GNU lesser public license'          => 'lgpl',         1,
        'GNU library general public license' => 'lgpl',         1,
        'GNU library public license'         => 'lgpl',         1,
        'GNU Free Documentation license'     => 'unrestricted', 1,
        'GNU Affero General Public License'  => 'open_source',  1,
        '(?:Free)?BSD license'               => 'bsd',          1,
        'Artistic license 2\.0'              => 'artistic_2',   1,
        'Artistic license'                   => 'artistic',     1,
        'Apache (?:Software )?license'       => 'apache',       1,
        'GPL'                                => 'gpl',          1,
        'LGPL'                               => 'lgpl',         1,
        'BSD'                                => 'bsd',          1,
        'Artistic'                           => 'artistic',     1,
        'MIT'                                => 'mit',          1,
        'Mozilla Public License'             => 'mozilla',      1,
        'Q Public License'                   => 'open_source',  1,
        'OpenSSL License'                    => 'unrestricted', 1,
        'SSLeay License'                     => 'unrestricted', 1,
        'zlib License'                       => 'open_source',  1,
        'proprietary'                        => 'proprietary',  0,
    );
    while ( my ($pattern, $license, $osi) = splice(@phrases, 0, 3) ) {
        $pattern =~ s#\s+#\\s+#gs;
        if ( $license_text =~ /\b$pattern\b/i ) {
            return $license;
        }
    }
    return '';
}

sub license_from {
    my $self = shift;
    if (my $license=_extract_license(Module::Install::_read($_[0]))) {
        $self->license($license);
    } else {
        warn "Cannot determine license info from $_[0]\n";
        return 'unknown';
    }
}

sub _extract_bugtracker {
    my @links   = $_[0] =~ m#L<(
     https?\Q://rt.cpan.org/\E[^>]+|
     https?\Q://github.com/\E[\w_]+/[\w_]+/issues|
     https?\Q://code.google.com/p/\E[\w_\-]+/issues/list
     )>#gx;
    my %links;
    @links{@links}=();
    @links=keys %links;
    return @links;
}

sub bugtracker_from {
    my $self    = shift;
    my $content = Module::Install::_read($_[0]);
    my @links   = _extract_bugtracker($content);
    unless ( @links ) {
        warn "Cannot determine bugtracker info from $_[0]\n";
        return 0;
    }
    if ( @links > 1 ) {
        warn "Found more than one bugtracker link in $_[0]\n";
        return 0;
    }

    # Set the bugtracker
    bugtracker( $links[0] );
    return 1;
}

sub requires_from {
    my $self     = shift;
    my $content  = Module::Install::_readperl($_[0]);
    my @requires = $content =~ m/^use\s+([^\W\d]\w*(?:::\w+)*)\s+(v?[\d\.]+)/mg;
    while ( @requires ) {
        my $module  = shift @requires;
        my $version = shift @requires;
        $self->requires( $module => $version );
    }
}

sub test_requires_from {
    my $self     = shift;
    my $content  = Module::Install::_readperl($_[0]);
    my @requires = $content =~ m/^use\s+([^\W\d]\w*(?:::\w+)*)\s+([\d\.]+)/mg;
    while ( @requires ) {
        my $module  = shift @requires;
        my $version = shift @requires;
        $self->test_requires( $module => $version );
    }
}

# Convert triple-part versions (eg, 5.6.1 or 5.8.9) to
# numbers (eg, 5.006001 or 5.008009).
# Also, convert double-part versions (eg, 5.8)
sub _perl_version {
    my $v = $_[-1];
    $v =~ s/^([1-9])\.([1-9]\d?\d?)$/sprintf("%d.%03d",$1,$2)/e;
    $v =~ s/^([1-9])\.([1-9]\d?\d?)\.(0|[1-9]\d?\d?)$/sprintf("%d.%03d%03d",$1,$2,$3 || 0)/e;
    $v =~ s/(\.\d\d\d)000$/$1/;
    $v =~ s/_.+$//;
    if ( ref($v) ) {
        # Numify
        $v = $v + 0;
    }
    return $v;
}

sub add_metadata {
    my $self = shift;
    my %hash = @_;
    for my $key (keys %hash) {
        warn "add_metadata: $key is not prefixed with 'x_'.\n" .
             "Use appopriate function to add non-private metadata.\n" unless $key =~ /^x_/;
        $self->{values}->{$key} = $hash{$key};
    }
}


######################################################################
# MYMETA Support

sub WriteMyMeta {
    die "WriteMyMeta has been deprecated";
}

sub write_mymeta_yaml {
    my $self = shift;

    # We need YAML::Tiny to write the MYMETA.yml file
    unless ( eval { require YAML::Tiny; 1; } ) {
        return 1;
    }

    # Generate the data
    my $meta = $self->_write_mymeta_data or return 1;

    # Save as the MYMETA.yml file
    print "Writing MYMETA.yml\n";
    YAML::Tiny::DumpFile('MYMETA.yml', $meta);
}

sub write_mymeta_json {
    my $self = shift;

    # We need JSON to write the MYMETA.json file
    unless ( eval { require JSON; 1; } ) {
        return 1;
    }

    # Generate the data
    my $meta = $self->_write_mymeta_data or return 1;

    # Save as the MYMETA.yml file
    print "Writing MYMETA.json\n";
    Module::Install::_write(
        'MYMETA.json',
        JSON->new->pretty(1)->canonical->encode($meta),
    );
}

sub _write_mymeta_data {
    my $self = shift;

    # If there's no existing META.yml there is nothing we can do
    return undef unless -f 'META.yml';

    # We need Parse::CPAN::Meta to load the file
    unless ( eval { require Parse::CPAN::Meta; 1; } ) {
        return undef;
    }

    # Merge the perl version into the dependencies
    my $val  = $self->Meta->{values};
    my $perl = delete $val->{perl_version};
    if ( $perl ) {
        $val->{requires} ||= [];
        my $requires = $val->{requires};

        # Canonize to three-dot version after Perl 5.6
        if ( $perl >= 5.006 ) {
            $perl =~ s{^(\d+)\.(\d\d\d)(\d*)}{join('.', $1, int($2||0), int($3||0))}e
        }
        unshift @$requires, [ perl => $perl ];
    }

    # Load the advisory META.yml file
    my @yaml = Parse::CPAN::Meta::LoadFile('META.yml');
    my $meta = $yaml[0];

    # Overwrite the non-configure dependency hashes
    delete $meta->{requires};
    delete $meta->{build_requires};
    delete $meta->{recommends};
    if ( exists $val->{requires} ) {
        $meta->{requires} = { map { @$_ } @{ $val->{requires} } };
    }
    if ( exists $val->{build_requires} ) {
        $meta->{build_requires} = { map { @$_ } @{ $val->{build_requires} } };
    }

    return $meta;
}

1;
