feat: Add examples to People API advanced service (googleworkspace#374)

* Adds examples to People API advanced service

* fix: Lint errors and replace for loop with find

* fix: missing semi-colon

* chore: more lint fixes

* chore: more lint fixes

Co-authored-by: Vinay Vyas <69166360+vinay-google@users.noreply.github.com>

Author: kar320

advanced/people.gs

@@ -74,3 +74,116 @@ function getAccount(accountId) {
   }
 }
 // [END people_get_account]
+
+// [START people_get_group]
+
+/**
+ * Gets a contact group with the given name
+ * @param {string} name The group name.
+ * @see https://developers.google.com/people/api/rest/v1/contactGroups/list
+ */
+function getContactGroup(name) {
+  try {
+    const people = People.ContactGroups.list();
+    // Finds the contact group for the person where the name matches.
+    const group = people['contactGroups'].find((group) => group['name'] === name);
+    // Prints the contact group
+    console.log('Group: %s', JSON.stringify(group, null, 2));
+  } catch (err) {
+    // TODO (developers) - Handle exception
+    console.log('Failed to get the contact group with an error %s', err.message);
+  }
+}
+
+// [END people_get_group]
+
+// [START people_get_contact_by_email]
+
+/**
+ * Gets a contact by the email address.
+ * @param {string} email The email address.
+ * @see https://developers.google.com/people/api/rest/v1/people.connections/list
+ */
+function getContactByEmail(email) {
+  try {
+    // Gets the person with that email address by iterating over all contacts.
+    const people = People.People.Connections.list('people/me', {
+      personFields: 'names,emailAddresses'
+    });
+    const contact = people['connections'].find((connection) => {
+      return connection['emailAddresses'].some((emailAddress) => emailAddress['value'] === email);
+    });
+    // Prints the contact.
+    console.log('Contact: %s', JSON.stringify(contact, null, 2));
+  } catch (err) {
+    // TODO (developers) - Handle exception
+    console.log('Failed to get the connection with an error %s', err.message);
+  }
+}
+
+// [END people_get_contact_by_email]
+
+// [START people_get_full_name]
+/**
+ * Gets the full name (given name and last name) of the contact as a string.
+ * @see https://developers.google.com/people/api/rest/v1/people/get
+ */
+function getFullName() {
+  try {
+    // Gets the person by specifying resource name/account ID
+    // in the first parameter of People.People.get.
+    // This example gets the person for the user running the script.
+    const people = People.People.get('people/me', {personFields: 'names'});
+    // Prints the full name (given name + family name)
+    console.log(`${people['names'][0]['givenName']} ${people['names'][0]['familyName']}`);
+  } catch (err) {
+    // TODO (developers) - Handle exception
+    console.log('Failed to get the connection with an error %s', err.message);
+  }
+}
+
+// [END people_get_full_name]
+
+// [START people_get_phone_numbers]
+/**
+ * Gets all the phone numbers for this contact.
+ * @see https://developers.google.com/people/api/rest/v1/people/get
+ */
+function getPhoneNumbers() {
+  try {
+    // Gets the person by specifying resource name/account ID
+    // in the first parameter of People.People.get.
+    // This example gets the person for the user running the script.
+    const people = People.People.get('people/me', {personFields: 'phoneNumbers'});
+    // Prints the phone numbers.
+    console.log(people['phoneNumbers']);
+  } catch (err) {
+    // TODO (developers) - Handle exception
+    console.log('Failed to get the connection with an error %s', err.message);
+  }
+}
+
+// [END people_get_phone_numbers]
+
+// [START people_get_single_phone_number]
+/**
+ * Gets a phone number by type, such as work or home.
+ * @see https://developers.google.com/people/api/rest/v1/people/get
+ */
+function getPhone() {
+  try {
+    // Gets the person by specifying resource name/account ID
+    // in the first parameter of People.People.get.
+    // This example gets the person for the user running the script.
+    const people = People.People.get('people/me', {personFields: 'phoneNumbers'});
+    // Gets phone number by type, such as home or work.
+    const phoneNumber = people['phoneNumbers'].find((phone) => phone['type'] === 'home')['value'];
+    // Prints the phone numbers.
+    console.log(phoneNumber);
+  } catch (err) {
+    // TODO (developers) - Handle exception
+    console.log('Failed to get the connection with an error %s', err.message);
+  }
+}
+
+// [END people_get_single_phone_number]