3 files changed, 68 insertions, 0 deletions
diff --git a/src/hooks/log.js b/src/hooks/log.js
new file mode 100644
index 0000000..37e9403
--- /dev/null
+++ b/src/hooks/log.js
@@ -0,0 +1,24 @@
+// A hook that logs service method before, after and error
+// See https://github.com/winstonjs/winston for documentation
+// about the logger.
+const logger = require('../logger');
+const util = require('util');
+
+// To see more detailed messages, uncomment the following line:
+// logger.level = 'debug';
+
+module.exports = function () {
+  return context => {
+    // This debugs the service call and a stringified version of the hook context
+    // You can customize the message (and logger) to your needs
+    logger.debug(`${context.type} app.service('${context.path}').${context.method}()`);
+    
+    if(typeof context.toJSON === 'function' && logger.level === 'debug') {
+      logger.debug('Hook Context', util.inspect(context, {colors: false}));
+    }
+    
+    if(context.error && !context.result) {
+      logger.error(context.error.stack);
+    }
+  };
+};
diff --git a/src/hooks/populate-user.js b/src/hooks/populate-user.js
new file mode 100644
index 0000000..dfa58cf
--- /dev/null
+++ b/src/hooks/populate-user.js
@@ -0,0 +1,9 @@
+// Use this hook to manipulate incoming or outgoing data.
+// For more information on hooks see: http://docs.feathersjs.com/api/hooks.html
+
+// eslint-disable-next-line no-unused-vars
+module.exports = function (options = {}) {
+  return async context => {
+    return context;
+  };
+};
diff --git a/src/hooks/process-post.js b/src/hooks/process-post.js
new file mode 100644
index 0000000..d23f451
--- /dev/null
+++ b/src/hooks/process-post.js
@@ -0,0 +1,35 @@
+// Use this hook to manipulate incoming or outgoing data.
+// For more information on hooks see: http://docs.feathersjs.com/api/hooks.html
+
+// eslint-disable-next-line no-unused-vars
+module.exports = function (options = {}) {
+  return async context => {
+    return async context => {
+      const {data} = context;
+
+      // Throw an error if we didn't get a text
+      if (!data.text) {
+        throw new Error('A post must have a text');
+      }
+
+      // The authenticated user
+      const user = context.params.user;
+      // The actual message text
+      const text = context.data.text
+      // Posts can't be longer than 400 characters
+        .substring(0, 400);
+
+      // Override the original data (so that people can't submit additional stuff)
+      context.data = {
+        text,
+        // Set the user id
+        userId: user._id,
+        // Add the current date
+        createdAt: new Date().getTime()
+      };
+
+      // Best practise, hooks should always return the context
+      return context;
+    };
+  };
+};