Add an "Account Owner Lookup" Bot-- GCF + Sheets Chatbot sample (#65)

* Initial set up of an account look up bot

* Checks account names from data sheet

* added response cards

* lint

* Add screenshots

* First draft of README

* cleaned up README

* removes extra stringifys and misc clean up

node/accounts-bot/README.md

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+# Accounts Bot
+
+This demo bot serves account owner information for a fictional sales team. This code sample 
+shows how create a bot that looks up information from a [Google Sheet][data_sheet] and served by a
+[Google Cloud Function][gcf]. With this bot, a user who requests an account owner's information will
+either receive a card with contact info or an option ensure the data is up-to-date if the requested
+account could not be found. 
+
+![Acme-Lookup](https://cdn.jsdelivr.net/gh/gsuitedevs/hangouts-chat-samples@master/node/accounts-bot/assests/AcmeLookup.png)
+
+[gcf]: https://cloud.google.com/functions
+[data_sheet]: https://docs.google.com/spreadsheets/d/1kxW15ZI48mh4KkvgsMpg7gInmEQmyKYRnZdbUOSMRnU/copy
+
+## Prerequisites
+
+1. The [Google Cloud SDK][cloud_sdk] and `gcloud` set up on your machine.
+1. Please be sure to have completed or understood the concepts in the Hangouts Chat 
+Google Cloud Functions [quickstart guide][gcf_bot] first.
+
+[cloud_sdk]: https://cloud.google.com/deployment-manager/docs/step-by-step-guide/installation-and-setup
+[gcf_bot]: https://developers.google.com/hangouts/chat/quickstart/gcf-bot
+
+## Set up instructions
+
+1. Make a copy of the [data sheet][data_sheet] in your Google Drive.
+1. Create a new Node.js project in your working directory with:
+
+`npm init`
+
+1. Copy the code in index.js to your working directory.
+1. Install the googleapis library to access the Sheets API:
+
+`npm install googleapis --save`
+
+### Set up a Google Cloud Project (if needed)
+
+1. [Create a new project][new_project] in the Google Cloud Developer Console.
+Name it "AccountsBot", select a **Billing Account** if prompted, and
+click **CREATE**. More information on how to setup billing [here][billing].
+1. When the project creation is complete a notification appears in the
+upper-right of the page. Click on the **Create Project: AccountsBot** entry
+to open the project.
+1. Open the [**OAuth consent screen**][consent_screen] settings page for the
+project.
+1. In the field **Application name** enter "AccountsBot" and click the
+**Save** button at the bottom.
+1. Open the [**Sheets API**][library_sheets] page in the API library and click
+the **ENABLE** button.
+1. Open the [**Project settings**][project_settings] page for the project.
+1. Copy the value listed under **Project number**.
+
+[new_project]: https://console.cloud.google.com/projectcreate
+[billing]: https://cloud.google.com/free/docs/gcp-free-tier
+[consent_screen]: https://console.cloud.google.com/apis/credentials/consent
+[library_sheets]: https://console.cloud.google.com/apis/library/sheets
+[project_settings]: https://console.cloud.google.com/iam-admin/settings
+
+### Deploying the Cloud Function
+
+1. In your working directory, deploy the Cloud function with the following command:
+`gcloud functions deploy accountsBot --runtime nodejs8 --trigger-http`
+
+### Set the permissions on the data
+
+1. The Cloud Function at runtime will run as your GCP project's AppEngine Default
+Service Account. Read more [here][functions_iam]. In the Cloud Console, navigate
+to your project's [service accounts][service_accounts] and copy your AppEngine 
+Service Account address which should be in this format: 
+
+`PROJECT_ID@appspot.gserviceaccount.com`
+
+  1. If one is not already present, trigger your Cloud Function from the Functions Console.
+  1. Navigate back to your service accounts and it should be present.
+1. Open your data sheet and give this address view-only permissions. 
+
+[cloud_console]: https://console.cloud.google.com/
+[service_accounts]: https://console.cloud.google.com/iam-admin/serviceaccounts
+[functions_iam]: https://cloud.google.com/functions/docs/concepts/iam
+
+### Publish the bot to Hangouts Chat
+
+1.  Back in the Cloud Console, open the
+    [**Hangouts Chat API**][library_chat] page in the API library and click the
+    **ENABLE** button.
+1.  Once the API is enabled, on click the **Configuration** tab.
+1.  In the Configuration tab, do the following:
+    1.  In the **Bot name** box, enter "AccountsBot".
+    1.  In the **Avatar URL box**, enter `https://www.gstatic.com/images/icons/material/system_gm/1x/badge_black_18dp.png`.
+    1.  In the **Description box**, enter "Easy account owners look up".
+    1.  Under **Functionality**, select all options.
+    1.  Under **Connection settings**, select **Bot Url** and paste
+        your the URL for the Cloud Function trigger into the box.
+    1.  Under **Permissions**, select **Specific people and group in your
+        domain**. In the text box under the drop-down menu, enter your email
+        address.
+    1.  Click Save changes.
+1.  After you save your changes, verify that the status on the Hangouts Chat API
+    page shows the Bot Status to be **LIVE – available to users**.
+
+[library_chat]: https://console.cloud.google.com/apis/library/chat.googleapis.com
+
+## Test the bot
+
+1.  Open [Hangouts Chat][hangouts_chat].
+1.  Click **Find people, rooms, bots > Message a bot**.
+1.  From the list, select the **AccountsBot** that you created.
+1.  Send the message "Acme" to the bot, you should receive a card shown above.
+1.  Send the message "foo", you should receive the default card:
+![Acme-Lookup](https://cdn.jsdelivr.net/gh/gsuitedevs/hangouts-chat-samples@master/node/accounts-bot/assests/FooLookup.png)
+
+[hangouts_chat]: https://chat.google.com

node/accounts-bot/index.js

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+const {google} = require('googleapis');
+const SHEETS_SCOPE = 'https://www.googleapis.com/auth/spreadsheets.readonly';
+const ACCOUNTS_SHEET_ID = '1kxW15ZI48mh4KkvgsMpg7gInmEQmyKYRnZdbUOSMRnU';
+const ACCOUNTS_SHEET_URL = 'https://docs.google.com/spreadsheets/d/1kxW15ZI48mh4KkvgsMpg7gInmEQmyKYRnZdbUOSMRnU/edit#gid=0';
+const ACCOUNT_IMAGE_URL = 'https://www.gstatic.com/images/icons/material/system_gm/1x/account_circle_black_18dp.png';
+
+/**
+ * Looks up the account owner for the company requested.
+ *
+ * @param {!express:Request} req HTTP request context.
+ * @param {!express:Response} res HTTP response context.
+*/
+exports.accountsBot = async (req, res) => {
+  const message = req.body.message;
+  if (!message || !message.text) {
+    console.log('invalid request');
+  }
+
+  const messageParts = message.text.split(/[ ,]+/);
+  if (messageParts.length != 2) {
+    res.send(createTextResponse('Please enter a single account to look up.'));
+  }
+
+  const accountName = messageParts[1];
+  console.log(`accountName: ${accountName}`);
+  const sheetsClient = await getSheetsClient();
+  try {
+    const ownerData = await accountLookup(sheetsClient, accountName);
+    res.send(createOwnerCard(ownerData));
+  } catch (error) {
+    res.send(createErrorCard(accountName));
+  }
+};
+
+/**
+ * Looks up ownership information for the account.
+ *
+ * @param {Object} client initialized Sheets API client.
+ * @param {String} accountName inbound message
+ * @return {String} owner data
+ */
+async function accountLookup(client, accountName) {
+  const accountsSheet = await client.spreadsheets.values.get({
+    spreadsheetId: ACCOUNTS_SHEET_ID,
+    range: 'Sheet1!A:D',
+  });
+  const accountsTable = accountsSheet.data.values;
+
+  return accountsTable.find((entry) => entry[0] === accountName);
+}
+
+/**
+ * Authenticates the Sheets API client for read-only access.
+ *
+ * @return {Object} sheets client
+ */
+async function getSheetsClient() {
+  // Should change this to file.only probably
+  const auth = await google.auth.getClient({
+    scopes: [SHEETS_SCOPE],
+  });
+  return google.sheets({version: 'v4', auth});
+}
+
+/**
+ * Creates JSON response for a simple text message for Hangouts.
+ *
+ * @param {String} message the text of message response
+ * @return {JSON} the reponse data
+*/
+function createTextResponse(message) {
+  return {text: message};
+}
+
+/**
+ * Creates a JSON with the fields specified.
+ *
+ * @param {Array} data owner info
+ * @return {Object} a card with the owner info
+ */
+function createOwnerCard(data) {
+  const company = data[0];
+  const name = data[1];
+  const location = data[2];
+  const email = data[3];
+
+  const cardHeader = {
+    title: company + ' Account Owner',
+    subtitle: name,
+    imageUrl: ACCOUNT_IMAGE_URL,
+    imageStyle: 'IMAGE',
+  };
+
+  const emailWidget = {
+    keyValue: {
+      content: 'Email',
+      bottomLabel: email,
+    },
+  };
+
+  const locationWidget = {
+    keyValue: {
+      content: 'Location',
+      bottomLabel: location,
+    },
+  };
+
+  const infoSection = {widgets: [emailWidget, locationWidget]};
+
+  const cards = [{
+    name: 'Status Card',
+    header: cardHeader,
+    sections: [infoSection],
+  }];
+
+  return {cards: cards};
+}
+
+/**
+ * Creates a card to respond if no account is found.
+ *
+ * @param {String} accountName the company that could not be found.
+ * @return {Object} a card with default info.
+ */
+function createErrorCard(accountName) {
+  const cardHeader = {
+    title: 'Account Information Not Found',
+    subtitle: 'Account requested: ' + accountName,
+    imageUrl: ACCOUNT_IMAGE_URL,
+    imageStyle: 'IMAGE',
+  };
+
+  const textWidget = {
+    textParagraph: {
+      text: 'Please check the account data is up to date',
+    },
+  };
+
+  const buttonWidget = {
+    buttons: [
+      {
+        textButton: {
+          text: 'Account Data',
+          onClick: {
+            openLink: {
+              url: ACCOUNTS_SHEET_URL,
+            },
+          },
+        },
+      },
+    ],
+  };
+
+  const infoSection = {widgets: [textWidget, buttonWidget]};
+
+  const cards = [{
+    name: 'No Owner Found',
+    header: cardHeader,
+    sections: [infoSection],
+  }];
+  return {cards: cards};
+}