use warnings;
use Test::More;
use strict;
use IO::String;
use LWP::UserAgent;
use LWP::Protocol::PSGI;
use MIME::Base64;

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

my $debug     = 'error';
my $maintests = 18;
my ( $op, $rp, $res );
my $userdb = tempdb();

LWP::Protocol::PSGI->register(
    sub {
        my $req = Plack::Request->new(@_);
        ok( $req->uri =~ m#http://auth.((?:o|r)p).com(.*)#, ' REST request' );
        my $host = $1;
        my $url  = $2;
        my ( $res, $client );
        count(1);
        if ( $host eq 'op' ) {
            pass("  Request from RP to OP,     endpoint $url");
            $client = $op;
        }
        elsif ( $host eq 'rp' ) {
            pass('  Request from OP to RP');
            $client = $rp;
        }
        else {
            fail('  Aborting REST request (external)');
            return HTTP::Response->new(500);
        }
        if ( $req->method =~ /^post$/i ) {
            my $s = $req->content;
            ok(
                $res = $client->_post(
                    $url, IO::String->new($s),
                    length => length($s),
                    type   => $req->header('Content-Type'),
                ),
                '  Execute request'
            );
        }
        else {
            ok(
                $res = $client->_get(
                    $url,
                    custom => {
                        HTTP_AUTHORIZATION => $req->header('Authorization'),
                    }
                ),
                '  Execute request'
            );
        }
        ok( $res->[0] == 200, '  Response is 200' );
        ok( getHeader( $res, 'Content-Type' ) =~ m#^application/json#,
            '  Content is JSON' )
          or explain( $res->[1], 'Content-Type => application/json' );
        count(4);
        return $res;
    }
);

SKIP: {
    eval { require DBI; require DBD::SQLite; };
    if ($@) {
        skip 'DBD::SQLite not found', $maintests;
    }
    my $dbh = DBI->connect("dbi:SQLite:dbname=$userdb");
    $dbh->do('CREATE TABLE users (user text,password text,name text)');
    $dbh->do("INSERT INTO users VALUES ('dwho','dwho','Doctor who')");

    # Initialization
    ok( $op = register( 'op', sub { op() } ), 'OP portal' );

    ok(
        $res = $op->_get('/oauth2/jwks'),
        'Get JWKS,     endpoint /oauth2/jwks'
    );
    expectOK($res);
    my $jwks = $res->[2]->[0];

    ok(
        $res = $op->_get('/.well-known/openid-configuration'),
        'Get metadata, endpoint /.well-known/openid-configuration'
    );
    expectOK($res);
    my $metadata = $res->[2]->[0];

    &Lemonldap::NG::Handler::Main::cfgNum( 0, 0 );
    ok( $rp = register( 'rp', sub { rp( $jwks, $metadata ) } ), 'RP portal' );

    # Query RP for auth
    ok( $res = $rp->_get( '/', accept => 'text/html' ), 'Unauth SP request' );
    my ( $url, $query ) =
      expectRedirection( $res,
        qr#http://auth.op.com(/oauth2/authorize)\?(.*)$# );

    # Push request to OP
    ok( $res = $op->_get( $url, query => $query, accept => 'text/html' ),
        "Push request to OP,         endpoint $url" );
    my ( $host, $tmp );
    ( $host, $tmp, $query ) = expectForm($res);
    my $pdata = 'lemonldappdata=' . expectCookie( $res, 'lemonldappdata' );

    # Try to authenticate to OP
    $query =~ s/(?:password|user)=&?//g;
    $query = "user=dwho&password=dwho&$query";
    ok(
        $res = $op->_post(
            $url,
            IO::String->new($query),
            accept => 'text/html',
            length => length($query),
            cookie => $pdata,
        ),
        "Post authentication,        endpoint $url"
    );
    my $idpId = expectCookie($res);
    ( $host, $tmp, $query ) = expectForm( $res, '#', undef, 'confirm' );

    ok(
        $res = $op->_post(
            $url,
            IO::String->new($query),
            accept => 'text/html',
            cookie => "lemonldap=$idpId",
            length => length($query),
        ),
        "Post confirmation,          endpoint $url"
    );

    ($query) = expectRedirection( $res, qr#^http://auth.rp.com/?\?(.*)$# );

    # Push OP response to RP

    ok( $res = $rp->_get( '/', query => $query, accept => 'text/html' ),
        'Call openidconnectcallback on RP' );
    my $spId = expectCookie($res);

    ok(
        $res = $op->_get( '/oauth2/checksession.html', accept => 'text.html' ),
        'Check session,      endpoint /oauth2/checksession.html'
    );
    expectOK($res);
    ok( getHeader( $res, 'Content-Security-Policy' ) !~ /frame-ancestors/,
        ' Frame can be embedded' )
      or explain( $res->[1],
        'Content-Security-Policy does not contain a frame-ancestors' );

    # Logout initiated by RP
    ok(
        $res = $rp->_get(
            '/',
            query  => 'logout',
            cookie => "lemonldap=$spId",
            accept => 'text/html'
        ),
        'Query RP for logout'
    );
    ( $url, $query ) = expectRedirection( $res,
        qr#http://auth.op.com(/oauth2/logout)\?(post_logout_redirect_uri=.+)$#
    );

    # Push logout to OP

    ok(
        $res = $op->_get(
            $url,
            query  => $query,
            cookie => "lemonldap=$idpId",
            accept => 'text/html'
        ),
        "Push logout request to OP,     endpoint $url"
    );

    ( $host, $tmp, $query ) = expectForm( $res, '#', undef, 'confirm' );

    ok(
        $res = $op->_post(
            $url, IO::String->new($query),
            length => length($query),
            cookie => "lemonldap=$idpId",
            accept => 'text/html',
        ),
        "Confirm logout,                endpoint $url"
    );

    ( $url, $query ) = expectRedirection( $res, qr#.# );

    # Test logout endpoint without session
    ok(
        $res = $op->_get(
            '/oauth2/logout',
            accept => 'text/html',
            query  => 'post_logout_redirect_uri=http://auth.rp.com/?logout=1'
        ),
        'logout endpoint with redirect, endpoint /oauth2/logout'
    );
    expectRedirection( $res, 'http://auth.rp.com/?logout=1' );

    ok( $res = $op->_get('/oauth2/logout'),
        'logout endpoint,               endpoint /oauth2/logout' );
    expectReject($res);

    # Test if logout is done
    ok(
        $res = $op->_get(
            '/', cookie => "lemonldap=$idpId",
        ),
        'Test if user is reject on IdP'
    );
    expectReject($res);

    ok(
        $res = $rp->_get(
            '/',
            accept => 'text/html',
            cookie => "lemonldap=$spId"
        ),
        'Test if user is reject on SP'
    );
    expectRedirection( $res, qr#^http://auth.op.com/oauth2/authorize# );

    clean_sessions();
}

#print STDERR Dumper($res);

count($maintests);
done_testing( count() );

sub op {
    return LLNG::Manager::Test->new(
        {
            ini => {
                logLevel          => $debug,
                domain            => 'idp.com',
                portal            => 'http://auth.op.com/',
                authentication    => 'Choice',
                userDB            => 'Same',
                authChoiceParam   => 'test',
                authChoiceModules => {
                    demo => 'Demo;Demo;Demo',
                    sql  => 'DBI;DBI;DBI',
                },
                dbiAuthChain                    => "dbi:SQLite:dbname=$userdb",
                dbiAuthUser                     => '',
                dbiAuthPassword                 => '',
                dbiAuthTable                    => 'users',
                dbiAuthLoginCol                 => 'user',
                dbiAuthPasswordCol              => 'password',
                dbiAuthPasswordHash             => '',
                issuerDBOpenIDConnectActivation => "1",
                oidcRPMetaDataExportedVars      => {
                    rp => {
                        email       => "mail",
                        family_name => "cn",
                        name        => "cn"
                    }
                },
                oidcServiceAllowHybridFlow            => 1,
                oidcServiceAllowImplicitFlow          => 1,
                oidcServiceAllowAuthorizationCodeFlow => 1,
                oidcRPMetaDataOptions                 => {
                    rp => {
                        oidcRPMetaDataOptionsDisplayName       => "RP",
                        oidcRPMetaDataOptionsIDTokenExpiration => 3600,
                        oidcRPMetaDataOptionsClientID          => "rpid",
                        oidcRPMetaDataOptionsIDTokenSignAlg    => "HS512",
                        oidcRPMetaDataOptionsBypassConsent     => 0,
                        oidcRPMetaDataOptionsClientSecret      => "rpsecret",
                        oidcRPMetaDataOptionsUserIDAttr        => "",
                        oidcRPMetaDataOptionsAccessTokenExpiration  => 3600,
                        oidcRPMetaDataOptionsPostLogoutRedirectUris =>
                          "http://auth.rp.com/?logout=1",
                        oidcRPMetaDataOptionsRedirectUris =>
                          'http://auth.rp.com/?openidconnectcallback=1',
                    }
                },
                oidcOPMetaDataOptions           => {},
                oidcOPMetaDataJSON              => {},
                oidcOPMetaDataJWKS              => {},
                oidcServiceMetaDataAuthnContext => {
                    'loa-4' => 4,
                    'loa-1' => 1,
                    'loa-5' => 5,
                    'loa-2' => 2,
                    'loa-3' => 3
                },
                oidcServicePrivateKeySig => oidc_key_op_private_sig,
                oidcServicePublicKeySig  => oidc_cert_op_public_sig,
            }
        }
    );
}

sub rp {
    my ( $jwks, $metadata ) = @_;
    return LLNG::Manager::Test->new(
        {
            ini => {
                logLevel                   => $debug,
                domain                     => 'rp.com',
                portal                     => 'http://auth.rp.com/',
                authentication             => 'OpenIDConnect',
                userDB                     => 'Same',
                restSessionServer          => 1,
                oidcOPMetaDataExportedVars => {
                    op => {
                        cn   => "name",
                        uid  => "sub",
                        sn   => "family_name",
                        mail => "email"
                    }
                },
                oidcOPMetaDataOptions => {
                    op => {
                        oidcOPMetaDataOptionsCheckJWTSignature => 1,
                        oidcOPMetaDataOptionsJWKSTimeout       => 0,
                        oidcOPMetaDataOptionsClientSecret      => "rpsecret",
                        oidcOPMetaDataOptionsScope        => "openid profile",
                        oidcOPMetaDataOptionsStoreIDToken => 0,
                        oidcOPMetaDataOptionsDisplay      => "",
                        oidcOPMetaDataOptionsClientID     => "rpid",
                        oidcOPMetaDataOptionsConfigurationURI =>
                          "https://auth.op.com/.well-known/openid-configuration"
                    }
                },
                oidcOPMetaDataJWKS => {
                    op => $jwks,
                },
                oidcOPMetaDataJSON => {
                    op => $metadata,
                }
            }
        }
    );
}
