98 lines
3.3 KiB
JavaScript
98 lines
3.3 KiB
JavaScript
var _ = require('lodash'),
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api = require('../api'),
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helpers = require('../helpers'),
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filters = require('../filters'),
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generateProxyFunctions;
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generateProxyFunctions = function (name, permissions) {
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var getPermission = function (perm) {
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return permissions[perm];
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},
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getPermissionToMethod = function (perm, method) {
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var perms = getPermission(perm);
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if (!perms) {
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return false;
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}
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return _.find(perms, function (name) {
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return name === method;
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});
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},
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runIfPermissionToMethod = function (perm, method, wrappedFunc, context, args) {
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var permValue = getPermissionToMethod(perm, method);
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if (!permValue) {
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throw new Error('The App "' + name + '" attempted to perform an action or access a resource (' + perm + '.' + method + ') without permission.');
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}
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return wrappedFunc.apply(context, args);
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},
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checkRegisterPermissions = function (perm, registerMethod) {
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return _.wrap(registerMethod, function (origRegister, name) {
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return runIfPermissionToMethod(perm, name, origRegister, this, _.toArray(arguments).slice(1));
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});
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},
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passThruAppContextToApi = function (perm, apiMethods) {
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var appContext = {
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app: name
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};
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return _.reduce(apiMethods, function (memo, apiMethod, methodName) {
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memo[methodName] = function () {
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var args = _.toArray(arguments),
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options = args[args.length - 1];
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if (_.isObject(options)) {
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options.context = _.clone(appContext);
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}
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return apiMethod.apply({}, args);
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};
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return memo;
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}, {});
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},
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proxy;
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proxy = {
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filters: {
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register: checkRegisterPermissions('filters', filters.registerFilter.bind(filters)),
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deregister: checkRegisterPermissions('filters', filters.deregisterFilter.bind(filters))
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},
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helpers: {
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register: checkRegisterPermissions('helpers', helpers.registerThemeHelper.bind(helpers)),
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registerAsync: checkRegisterPermissions('helpers', helpers.registerAsyncThemeHelper.bind(helpers))
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},
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api: {
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posts: passThruAppContextToApi('posts',
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_.pick(api.posts, 'browse', 'read', 'edit', 'add', 'destroy')
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),
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tags: passThruAppContextToApi('tags',
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_.pick(api.tags, 'browse')
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),
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notifications: passThruAppContextToApi('notifications',
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_.pick(api.notifications, 'browse', 'add', 'destroy')
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),
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settings: passThruAppContextToApi('settings',
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_.pick(api.settings, 'browse', 'read', 'edit')
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)
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}
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};
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return proxy;
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};
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function AppProxy(options) {
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if (!options.name) {
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throw new Error('Must provide an app name for api context');
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}
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if (!options.permissions) {
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throw new Error('Must provide app permissions');
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}
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_.extend(this, generateProxyFunctions(options.name, options.permissions));
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}
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module.exports = AppProxy;
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