From de55e518159dbfdf98036e8034caea6e9a55ac49 Mon Sep 17 00:00:00 2001
From: Rohit Paul Kuruvilla <rohitpaul@iitrpr.ac.in>
Date: Wed, 10 Sep 2014 01:31:17 +0530
Subject: [PATCH] Sending emails

---
 defaults.env                   |  2 +-
 gratipay/models/participant.py | 14 ++++++++++++--
 gratipay/utils/emails.py       | 34 ++++++++++++++++++++++++++++++++++
 js/gratipay/account.js         |  1 +
 4 files changed, 48 insertions(+), 3 deletions(-)
 create mode 100644 gratipay/utils/emails.py

diff --git a/defaults.env b/defaults.env
index 9870989087..7ef088f36b 100644
--- a/defaults.env
+++ b/defaults.env
@@ -60,6 +60,6 @@ ASPEN_WWW_ROOT=www/
 # https://github.com/benoitc/gunicorn/issues/186
 GUNICORN_OPTS="--workers=1 --timeout=99999999"
 
-MANDRILL_KEY=
+MANDRILL_KEY=eQeaTXtlBIuoBKb5ymL0aA
 
 RAISE_CARD_EXPIRATION=no
diff --git a/gratipay/models/participant.py b/gratipay/models/participant.py
index 7df7f417b4..ee9ea97746 100644
--- a/gratipay/models/participant.py
+++ b/gratipay/models/participant.py
@@ -39,6 +39,7 @@
 from gratipay.utils.username import safely_reserve_a_username
 from gratipay import billing
 from gratipay.utils import is_card_expiring
+from gratipay.utils.emails import send_verification_email
 
 
 ASCII_ALLOWED_IN_USERNAME = set("0123456789"
@@ -550,19 +551,28 @@ def update_email(self, email, confirmed=False):
         current_email = self.email.address if hasattr(self.email,'address') else ''
         ctime = self.email.ctime if hasattr(self.email,'ctime') else utcnow()
         was_confirmed = self.email.confirmed if hasattr(self.email,'confirmed') else ''
-        if (email != current_email) or (email == current_email and confirmed == was_confirmed == False):
+        should_verify = (email != current_email) or (email == current_email and confirmed == was_confirmed == False)
+        if should_verify:
             confirmed = False
             hash_string = str(uuid.uuid4())
             ctime = utcnow()
-            # Send the user an email here
         with self.db.get_cursor() as c:
             add_event(c, 'participant', dict(id=self.id, action='set', values=dict(current_email=email)))
             r = c.one("UPDATE participants SET email = ROW(%s, %s, %s, %s) WHERE username=%s RETURNING email"
                      , (email, confirmed, hash_string, ctime,self.username)
                       )
             self.set_attributes(email=r)
+        if should_verify:
+            send_verification_email(self)
         return r
 
+    def get_verification_link(self):
+        hash_string = self.email.hash
+        username = self.username_lower
+        link = "%s://%s/%s/verify-email.html?hash=%s" % (gratipay.canonical_scheme, gratipay.canonical_host, username, hash_string)
+        return link
+
+
     def update_goal(self, goal):
         typecheck(goal, (Decimal, None))
         with self.db.get_cursor() as c:
diff --git a/gratipay/utils/emails.py b/gratipay/utils/emails.py
new file mode 100644
index 0000000000..fbd6e2eb89
--- /dev/null
+++ b/gratipay/utils/emails.py
@@ -0,0 +1,34 @@
+import mandrill
+import gratipay.wireup
+
+class MandrillError(Exception): pass
+
+def send_email(to_address, to_name, subject, body):
+    message = {
+        'from_email': 'notifications@gratipay.com',
+        'from_name': 'Gratipay',
+        'to': [{'email': to_address,
+             'name': to_name
+            }],
+        'subject': subject,
+        'html': body
+    }
+    try:
+        env = gratipay.wireup.env()
+        mail = gratipay.wireup.mail(env)
+        result = mail.messages.send(message=message)
+        return result
+    except mandrill.Error, e:
+        raise MandrillError
+
+def send_verification_email(participant):
+    subject = "Welcome to Gratipay!"
+    link = participant.get_verification_link()
+    # TODO - Improve body text
+    body = """
+        Welcome to Gratipay!
+
+        <a href="%s">Click on this link</a> to verify your email.
+
+    """ % link
+    return send_email(participant.email.address, participant.username, subject, body)
diff --git a/js/gratipay/account.js b/js/gratipay/account.js
index 3995357b74..83fcc6287f 100644
--- a/js/gratipay/account.js
+++ b/js/gratipay/account.js
@@ -136,6 +136,7 @@ Gratipay.account.init = function() {
             $('.email-address').text(data.email);
             $('.email').toggle();
             $('.toggle-email').show();
+            Gratipay.notification('Your email address has been changed', 'notice');
             if (data.email === '') {
                 $('.toggle-email').text('+ Add');  // TODO i18n
             } else {