gun-flint/dist/Middleware/base-middleware.js

Micro-framework for building Gun adapters

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _getPrototypeOf = require('babel-runtime/core-js/object/get-prototype-of');

var _getPrototypeOf2 = _interopRequireDefault(_getPrototypeOf);

var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require('babel-runtime/helpers/createClass');

var _createClass3 = _interopRequireDefault(_createClass2);

var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn');

var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);

var _inherits2 = require('babel-runtime/helpers/inherits');

var _inherits3 = _interopRequireDefault(_inherits2);

var _baseExtension = require('./../base-extension');

var _baseExtension2 = _interopRequireDefault(_baseExtension);

var _util = require('./../util');

var _util2 = _interopRequireDefault(_util);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var BaseMiddleware = function (_BaseExtension) {
    (0, _inherits3.default)(BaseMiddleware, _BaseExtension);

    function BaseMiddleware(middleware) {
        var _ret;

        (0, _classCallCheck3.default)(this, BaseMiddleware);

        var _this2 = (0, _possibleConstructorReturn3.default)(this, (BaseMiddleware.__proto__ || (0, _getPrototypeOf2.default)(BaseMiddleware)).call(this));

        _this2.outerContext = {};

        _this2._opt = middleware.opt ? middleware.opt.bind(_this2.outerContext) : _this2.noop;
        _this2._beforeGet = middleware.beforeGet ? middleware.beforeGet.bind(_this2.outerContext) : _this2.noop;
        _this2._beforePut = middleware.beforePut ? middleware.beforePut.bind(_this2.outerContext) : _this2.noop;

        for (var methodName in middleware) {
            if ({}.hasOwnProperty.call(middleware, methodName) && ['opt', 'beforeGet', 'beforePut'].indexOf(methodName === -1)) {
                if (typeof middleware[methodName] === 'function') {
                    _this2.outerContext[methodName] = middleware[methodName].bind(_this2.outerContext);
                } else {
                    _this2.outerContext[methodName] = middleware[methodName];
                }
            }
        }

        _this2._read = _this2._read.bind(_this2);
        _this2._write = _this2._write.bind(_this2);

        return _ret = _this2, (0, _possibleConstructorReturn3.default)(_this2, _ret);
    }

    (0, _createClass3.default)(BaseMiddleware, [{
        key: 'bootstrap',
        value: function bootstrap(Gun) {
            var _this = this;
            this.Gun = Gun || require('gun/gun');
            this.Gun.on('opt', function (context) {
                this.to.next(context);
                _this._opt.call(this.outerContext, context, context.opt, !context.once);

                if (context.once) {
                    return;
                }

                // Allows other plugins to respond after middleware does it's work
                var pluginInterop = function pluginInterop(middleware) {
                    return function (context) {
                        var _this3 = this;

                        var done = function done(postContext) {
                            _this3.to.next(postContext);
                        };

                        return middleware(context, done);
                    };
                };

                // Register the driver.
                context.on('get', pluginInterop(_this._read));
                context.on('put', pluginInterop(_this._write));
            });
        }
    }, {
        key: 'noop',
        value: function noop() {
            var _to;

            (_to = this.to).next.apply(_to, arguments);
        }
    }, {
        key: '_read',
        value: function _read(context, done) {
            this._beforeGet(context, function (postContext) {
                done(postContext || context);
            });
        }
    }, {
        key: '_write',
        value: function _write(context, done) {
            this._beforePut(context, function (postContext) {
                done(postContext || context);
            });
        }
    }]);
    return BaseMiddleware;
}(_baseExtension2.default);

exports.default = BaseMiddleware;