sandstorm.js

// Sandstorm context is detected using the METEOR_SETTINGS environment variable
// in the package definition.
// XXX We could probably rely on the user object to detect sandstorm usage.
var isSandstorm = Meteor.settings &&
                  Meteor.settings.public && Meteor.settings.public.sandstorm;

// In sandstorm we only have one board per sandstorm instance. Since we want to
// keep most of our code unchanged, we simply hard-code a board `_id` and
// redirect the user to this particular board.
var sandstormBoard = {
    _id: "sandstorm",
    slug: "board",
    // XXX Should be shared with the grain instance name.
    title: "LibreBoard",
    permission: "public",
    background: {
        type: "color",
        color: "#16A085"
    }
};

// On the first launch of the instance a user is automatically created thanks to
// the `accounts-sandstorm` package. After its creation we insert the unique
// board document. Note that when the `Users.after.insert` hook is called, the
// user is inserted into the database but not connected. So despite the
// appearances userId is null in this block.
//
// If the hard-coded board already exists and we are inserting a new user, we
// assume that the owner of the board want to share write privileges with the
// new user.
// XXX Improve that when the Sandstorm sharing model arrives.
if (isSandstorm && Meteor.isServer) {
    Users.after.insert(function(userId, doc) {
        if (! Boards.findOne(sandstormBoard._id)) {
            Boards.insert(_.extend(sandstormBoard, { userId: doc._id }));
            Boards.update(sandstormBoard._id, {
                $set: {
                    'members.0.userId': doc._id
                }
            });
            Activities.update({
                activityTypeId: sandstormBoard._id
            }, {
                $set: {
                    userId: doc._id
                }
            });
        } else {
            Boards.update({
                _id: sandstormBoard._id,
                permission: 'public'
            }, {
                $push: {
                    members: doc._id
                }
            });
        }
    });
}

// On the client, redirect the user to the hard-coded board. On the first launch
// the user will be redirected to the board before its creation. But that's not
// a problem thanks to the reactive board publication.
if (isSandstorm && Meteor.isClient) {
    Router.go('Board', {
        boardId: sandstormBoard._id,
        slug: getSlug(sandstormBoard.title)
    });

    // XXX Hack. `Meteor.absoluteUrl` doesn't work in Sandstorm, since every
    // session has a different URL whereas Meteor computes absoluteUrl based on
    // the ROOT_URL environement variable. So we overwrite this function on a
    // sandstorm client to return relative paths instead of absolutes.
    var _absoluteUrl = Meteor.absoluteUrl;
    var _defaultOptions = Meteor.absoluteUrl.defaultOptions;
    Meteor.absoluteUrl = function(path, options) {
        var url = _absoluteUrl(path, options);
        return url.replace(/^https?:\/\/127\.0\.0\.1:[0-9]{2,5}/, '');
    }
    Meteor.absoluteUrl.defaultOptions = _defaultOptions;
}

// We use this blaze helper in the UI to hide some template that does not make
// sense in the context of sandstorm, like board staring, board archiving, user
// name edition, etc.
Blaze.registerHelper("isSandstorm", function() {
    return isSandstorm;
});