Add: permissions

It's now possible to limit the models rest routes are created for. This
is done via a `models` option that can be simple to complex. The readme
has been updated to reflect this.

src/crud.js

@@ -4,24 +4,66 @@ import _ from 'lodash';
 import { parseInclude, parseWhere } from './utils';
 import { notFound } from 'boom';
 
-let prefix;
-let defaultConfig;
-
-export default (server, model, options) => {
-  prefix = options.prefix;
-  defaultConfig = options.defaultConfig;
-
-  list(server, model);
-  get(server, model);
-  scope(server, model);
-  create(server, model);
-  destroy(server, model);
-  destroyAll(server, model);
-  destroyScope(server, model);
-  update(server, model);
+const createAll = ({server, model, prefix, config}) => {
+  Object.keys(methods).forEach((method) => {
+    methods[method]({server, model, prefix, config});
+  });
 };
 
-export const list = (server, model) => {
+/*
+The `models` option, becomes `permissions`, and can look like:
+
+```
+models: ['cat', 'dog']
+```
+
+or
+
+```
+models: {
+  cat: ['list', 'get']
+  , dog: true // all
+}
+```
+
+*/
+
+export default (server, model, {prefix, defaultConfig: config, models: permissions}) => {
+  const modelName = model._singular;
+
+  if (!permissions) {
+    createAll({server, model, prefix, config});
+  }
+  else if (Array.isArray(permissions) && permissions.includes(modelName)) {
+    createAll({server, model, prefix, config});
+  }
+  else if (_.isPlainObject(permissions)) {
+    const permittedModels = Object.keys(permissions);
+
+    if (permissions[modelName] === true) {
+      createAll({server, model, prefix, config});
+    }
+    else if (permittedModels.includes(modelName)) {
+      if (Array.isArray(permissions[modelName])) {
+        permissions[modelName].forEach((method) => {
+          methods[method]({server, model, prefix, config});
+        });
+      }
+      else if (_.isPlainObject(permissions[modelName])) {
+        permissions[modelName].methods.forEach((method) => {
+          methods[method]({
+            server,
+            model,
+            prefix,
+            config: permissions[modelName].config || config,
+          });
+        });
+      }
+    }
+  }
+};
+
+export const list = ({server, model, prefix, config}) => {
   server.route({
     method: 'GET',
     path: `${prefix}/${model._plural}`,
@@ -40,11 +82,11 @@ export const list = (server, model) => {
       reply(list);
     },
 
-    config: defaultConfig,
+    config,
   });
 };
 
-export const get = (server, model) => {
+export const get = ({server, model, prefix, config}) => {
   server.route({
     method: 'GET',
     path: `${prefix}/${model._singular}/{id?}`,
@@ -68,11 +110,11 @@ export const get = (server, model) => {
           id: joi.any(),
         }),
       },
-    }, defaultConfig),
+    }, config),
   });
 };
 
-export const scope = (server, model) => {
+export const scope = ({server, model, prefix, config}) => {
   const scopes = Object.keys(model.options.scopes);
 
   server.route({
@@ -94,11 +136,11 @@ export const scope = (server, model) => {
           scope: joi.string().valid(...scopes),
         }),
       },
-    }, defaultConfig),
+    }, config),
   });
 };
 
-export const create = (server, model) => {
+export const create = ({server, model, prefix, config}) => {
   server.route({
     method: 'POST',
     path: `${prefix}/${model._singular}`,
@@ -110,11 +152,11 @@ export const create = (server, model) => {
       reply(instance);
     },
 
-    config: defaultConfig,
+    config,
   });
 };
 
-export const destroy = (server, model) => {
+export const destroy = ({server, model, prefix, config}) => {
   server.route({
     method: 'DELETE',
     path: `${prefix}/${model._singular}/{id?}`,
@@ -131,11 +173,11 @@ export const destroy = (server, model) => {
       reply(list.length === 1 ? list[0] : list);
     },
 
-    config: defaultConfig,
+    config,
   });
 };
 
-export const destroyAll = (server, model) => {
+export const destroyAll = ({server, model, prefix, config}) => {
   server.route({
     method: 'DELETE',
     path: `${prefix}/${model._plural}`,
@@ -151,11 +193,11 @@ export const destroyAll = (server, model) => {
       reply(list.length === 1 ? list[0] : list);
     },
 
-    config: defaultConfig,
+    config,
   });
 };
 
-export const destroyScope = (server, model) => {
+export const destroyScope = ({server, model, prefix, config}) => {
   const scopes = Object.keys(model.options.scopes);
 
   server.route({
@@ -179,11 +221,11 @@ export const destroyScope = (server, model) => {
           scope: joi.string().valid(...scopes),
         }),
       },
-    }, defaultConfig),
+    }, config),
   });
 };
 
-export const update = (server, model) => {
+export const update = ({server, model, prefix, config}) => {
   server.route({
     method: 'PUT',
     path: `${prefix}/${model._singular}/{id}`,
@@ -208,9 +250,13 @@ export const update = (server, model) => {
       validate: {
         payload: joi.object().required(),
       },
-    }, defaultConfig),
+    }, config),
   });
 };
 
 import * as associations from './associations/index';
 export { associations };
+
+const methods = {
+  list, get, scope, create, destroy, destroyAll, destroyScope, update,
+};