define([
    "dojo/_base/declare",
    "dojo/_base/lang",
    "dojo/when",
    "./NotFoundException",
    "./HttpException",
    "./Resource",
    "implab/safe"
],
    function (declare, lang, when, notFoundException, httpException, resource, safe) {

        return declare([], {
            _resourcesConfig: null,

            constructor: function (options) {
                safe.argumentNotNull(options, "options");
                safe.argumentNotNull(options.resourcesConfig, "options.resourcesConfig");

                this._resourcesConfig = options.resourcesConfig;
            },

            createResource: function (req) {
                let container = req.getContainer();
                return container.configure(this._resourcesConfig)
                    .then(function(){
                        let rc = container.getService("resource");

                        if(rc.hasOwnProperty("isInstanceOf") && rc.isInstanceOf(resource)) {
                            return rc;
                        } else {
                            return new resource(lang.mixin(rc,{request: req}));
                        }
                    });
            },

            invoke: function (req/*, next*/) {
                return when(this.createResource(req), function (rc) {
                    req.path.split(/\/+/).forEach(function (child) {
                        if (child) {
                            rc = rc.getChild(child);
                            if (!rc) {
                                throw new notFoundException();
                            }
                        }
                    });
                    return rc.invoke();
                });
            }
        });
    });