module.exports = function(app) {
    let models = app.models;
    let bootTimestamp = new Date().getTime();

    app.get('/', function(req, res) {
        let token = req.cookies.vnToken;
        validateToken(token, function(isValid) {
            if (!isValid) {
                redirectToAuth(res, req.get('origin'));
                return;
            }

            res.render('index.ejs', {
                assets: app.getWpAssets('salix'),
                version: bootTimestamp
            });
        });
    });

    app.get('/acl', function(req, res) {
        let token = req.cookies.vnToken;
        validateToken(token, function(isValid, token) {
            if (isValid)
                sendUserRole(res, token);
            else
                sendACL(res, {});
        });
    });

    app.get('/login', function(req, res) {
        let token = req.query.token;
        let continueUrl = req.query.continue;

        validateToken(token, function(isValid) {
            if (isValid) {
                res.cookie('vnToken', token /* , {httpOnly: true} */);
                res.redirect(continueUrl ? continueUrl : '/');
            } else
                redirectToAuth(res);
        });
    });

    app.get('/logout', function(req, res) {
        let token = req.cookies.vnToken;
        models.User.logout(token, function() {
            redirectToAuth(res);
        });
    });

    app.get('/validateToken', function(req, res) {
        let token = req.headers.authorization;

        validateToken(token, function(isValid) {
            if (isValid)
                res.json(null);
            else {
                res.status(401).json({
                    message: 'Invalid token'
                });
            }
        });
    });

    function validateToken(tokenId, cb) {
        models.AccessToken.findById(tokenId, function(err, token) {
            if (token) {
                token.validate(function(err, isValid) {
                    cb(isValid === true, token);
                });
            } else
                cb(false);
        });
    }

    function sendUserRole(res, token) {
        if (token.userId) {
            let query = {
                where: {
                    principalId: token.userId,
                    principalType: 'USER'
                },
                include: [{
                    relation: 'role',
                    scope: {
                        fields: ['name']
                    }
                }]
            };
            models.RoleMapping.find(query, function(_, roles) {
                if (roles) {
                    let acl = {
                        userProfile: {},
                        roles: {}
                    };
                    Object.keys(roles).forEach(function(_, i) {
                        if (roles[i].roleId) {
                            let rol = roles[i].role();
                            acl.roles[rol.name] = true;
                        }
                    });
                    models.User.findById(token.userId, function(_, userProfile) {
                        // acl.userProfile = userProfile;
                        if (userProfile && userProfile.id) {
                            acl.userProfile.id = userProfile.id;
                            acl.userProfile.username = userProfile.username;
                            acl.userProfile.warehouseId = 1;
                            sendACL(res, acl);
                        } else
                            sendACL(res, {});
                    });
                } else
                    sendACL(res, {});
            });
        } else
            sendACL(res, {});
    }

    function redirectToAuth(res, continueUrl) {
        let authUrl = app.get('url auth');
        let params = {
            apiKey: app.get('api key'),
            continue: continueUrl
        };
        res.clearCookie('vnToken');
        res.redirect(`${authUrl}/?${encodeUri(params)}`);
    }

    function sendACL(res, acl) {
        let aclStr = JSON.stringify(acl);
        res.header('Content-Type', 'application/javascript; charset=UTF-8');
        res.send(`(function(window){window.salix = window.salix || {}; window.salix.acl = window.salix.acl || {}; window.salix.acl = ${aclStr}; })(window)`);
    }
};

function encodeUri(object) {
    let uri = '';
    for (let key in object) {
        if (object[key]) {
            if (uri.length > 0)
                uri += '&';
            uri += encodeURIComponent(key) + '=';
            uri += encodeURIComponent(object[key]);
        }
    }
    return uri;
}