use warnings;
use Test::More;    # skip_all => 'CAS is in rebuild';
use strict;
use IO::String;
use LWP::UserAgent;
use LWP::Protocol::PSGI;
use MIME::Base64;
use Plack::Builder;

BEGIN {
    require 't/test-lib.pm';
}

my $debug = 'error';
my ( $issuer, $sp, $res );

# Redefine LWP methods for tests
LWP::Protocol::PSGI->register(
    builder {
        enable sub {
            my $app = shift;
            sub {
                ok( my $res = $app->(@_) );
                expectOK($res);
                ok( getHeader( $res, 'Content-Type' ) =~ m#xml#,
                    'Content is XML' )
                  or explain( $res->[1], 'Content-Type => application/xml' );
                count(2);
                return $res;
            };
        };
        mount "http://auth.idp.com/" => sub { goto $issuer->app };
        mount "http://auth.sp.com/"  => sub { goto $sp->app };
        mount "/"                    => denyLwpRequests;
    },
);

$issuer = register( 'issuer', \&issuer );
$sp     = register( 'sp',     \&sp );

# Simple SP access
ok(
    $res = $sp->_get(
        '/', accept => 'text/html',
    ),
    'Unauth SP request'
);
count(1);
ok( expectCookie( $res, 'llngcasserver' ) eq 'idp', 'Get CAS server cookie' );
count(1);
expectRedirection( $res,
    'http://auth.idp.com/cas/login?service=http%3A%2F%2Fauth.sp.com%2F' );

# Query IdP
ok(
    $res = $issuer->_get(
        '/cas/login',
        query  => 'service=http://auth.sp.com/',
        accept => 'text/html'
    ),
    'Query CAS server'
);
count(1);
expectOK($res);
my $pdata = 'lemonldappdata=' . expectCookie( $res, 'lemonldappdata' );

# Try to authenticate to IdP
my $body = $res->[2]->[0];
$body =~ s/^.*?<form.*?>//s;
$body =~ s#</form>.*$##s;
my %fields =
  ( $body =~ /<input type="hidden".+?name="(.+?)".+?value="(.*?)"/sg );
$fields{user} = $fields{password} = 'french';
use URI::Escape;
my $s = join( '&', map { "$_=" . uri_escape( $fields{$_} ) } keys %fields );
ok(
    $res = $issuer->_post(
        '/cas/login',
        IO::String->new($s),
        cookie => $pdata,
        accept => 'text/html',
        length => length($s),
    ),
    'Post authentication'
);
count(1);
my $idpId = expectCookie($res);

# Expect pdata to be cleared
$pdata = expectCookie( $res, 'lemonldappdata' );
ok( $pdata !~ 'issuerRequestsaml', 'SAML request cleared from pdata' );
count(1);

my ($query) =
  expectRedirection( $res, qr#^http://auth.sp.com/\?(ticket=[^&]+)$# );

# Back to SP
ok(
    $res = $sp->_get(
        '/',
        query  => $query,
        accept => 'text/html',
        cookie => 'llngcasserver=idp',
    ),
    'Query SP with ticket'
);
count(1);
my $spId = expectCookie($res);

# Test authentication
ok( $res = $sp->_get( '/', cookie => "lemonldap=$spId,llngcasserver=idp" ),
    'Get / on SP' );
count(1);
expectOK($res);
expectAuthenticatedAs( $res, 'french' );

# Test attributes
ok( getSession($spId)->data->{cn} eq 'Frédéric Accents', 'UTF-8 values' )
  or explain( $res, 'cn => Frédéric Accents' );
count(1);

# Logout initiated by CAS, try with invalid service URL first
ok(
    $res = $issuer->_get(
        '/cas/logout',
        query  => 'service=http://url.test/',
        cookie => "lemonldap=$idpId,llngcasserver=idp",
        accept => 'text/html'
    ),
    'Query SP for logout'
);
count(1);
expectPortalError( $res, 108, "Unauthorized URL" );

# Logout initiated by CAS, try with valid service URL
ok(
    $res = $issuer->_get(
        '/cas/logout',
        query  => 'service=http://auth.sp.com/',
        cookie => "lemonldap=$idpId,llngcasserver=idp",
        accept => 'text/html'
    ),
    'Query SP for logout'
);
count(1);
expectRedirection( $res, 'http://auth.sp.com/' );

# Verify that user has been disconnected
ok( $res = $issuer->_get( '/', cookie => "lemonldap=$idpId" ), 'Query IdP' );
count(1);
expectReject($res);

clean_sessions();
done_testing( count() );

sub issuer {
    return LLNG::Manager::Test->new( {
            ini => {
                logLevel               => $debug,
                domain                 => 'idp.com',
                portal                 => 'http://auth.idp.com/',
                authentication         => 'Demo',
                userDB                 => 'Same',
                issuerDBCASActivation  => 1,
                casAttr                => 'uid',
                casAttributes          => { cn => 'cn', uid => 'uid', },
                casAccessControlPolicy => 'error',
                multiValuesSeparator   => ';',
                casAppMetaDataOptions  => {
                    sp => {
                        casAppMetaDataOptionsService => 'http://auth.sp.com',
                    },
                },
            }
        }
    );
}

sub sp {
    return LLNG::Manager::Test->new( {
            ini => {
                logLevel                   => $debug,
                domain                     => 'sp.com',
                portal                     => 'http://auth.sp.com/',
                authentication             => 'CAS',
                userDB                     => 'CAS',
                restSessionServer          => 1,
                issuerDBCASActivation      => 0,
                multiValuesSeparator       => ';',
                casSrvMetaDataExportedVars => {
                    idp => {
                        cn   => 'cn',
                        mail => 'mail',
                        uid  => 'uid',
                    }
                },
                casSrvMetaDataOptions => {
                    idp => {
                        casSrvMetaDataOptionsUrl => 'http://auth.idp.com/cas',
                        casSrvMetaDataOptionsGateway => 0,
                    }
                },
            },
        }
    );
}
