paypal: Start support for multiple currencies

For now, ignore everything that is not the primary, and do not use the
converted total.

This is based on http://i.imgur.com/TNcLbPB.jpg
as I have 0 in all currencies for now.

modules/paypal/backend.py

@@ -47,7 +47,8 @@ class PaypalBackend(BaseBackend, ICapBank):
                                    self.config['password'].get())
 
     def iter_accounts(self):
-        yield self.get_account(u"1")
+        for account in self.browser.get_accounts():
+            yield account
 
     def get_account(self, _id):
         with self.browser:

modules/paypal/browser.py

@@ -55,6 +55,9 @@ class Paypal(BaseBrowser):
         if self.is_on_page(LoginPage):
             raise BrowserIncorrectPassword()
 
+    def get_accounts(self):
+        yield self.get_account(u"1")
+
     def get_account(self, _id):
         if _id != u"1":
             return None
@@ -62,7 +65,7 @@ class Paypal(BaseBrowser):
         if not self.is_on_page(AccountPage):
             self.location('/en/cgi-bin/webscr?cmd=_account&nav=0.0')
 
-        return self.page.get_account()
+        return self.page.get_account(_id)
 
     def get_history(self, account):
         raise NotImplementedError()

modules/paypal/pages.py

@@ -26,6 +26,10 @@ from weboob.tools.capabilities.bank.transactions import FrenchTransaction
 __all__ = ['LoginPage', 'AccountPage']
 
 
+def clean_amount(text):
+    return Decimal(FrenchTransaction.clean_amount(text))
+
+
 class LoginPage(BasePage):
     def login(self, login, password):
         self.browser.select_form(name='login_form')
@@ -35,16 +39,30 @@ class LoginPage(BasePage):
 
 
 class AccountPage(BasePage):
-    def get_account(self):
+    def get_account(self, _id):
+        assert _id == u"1"  # Only one "account" supported for now
+
         account = Account()
-        account.id = u"1"
+        account.id = _id
         account.label = unicode(self.browser.username)
         account.type = Account.TYPE_CHECKING
 
-        balance = self.document.xpath('//div[@id="main"]')[0] \
+        content = self.document.xpath('//div[@id="main"]//div[@class="col first"]')[0]
-            .xpath('.//div[@class="col first"]//h3/span[@class="balance"]')[0] \
+        # Total currency balance.
-            .balance.text_content().strip()
+        # If there are multiple currencies, this balance is all currencies
-        account.balance = Decimal(FrenchTransaction.clean_amount(balance))
+        # converted to the main currency.
+        balance = content.xpath('//h3/span[@class="balance"]')[0].text_content().strip()
+        account.balance = clean_amount(balance)
         account.currency = account.get_currency(balance)
 
+        # Primary currency balance.
+        # If the user enabled multiple currencies, we get this one instead.
+        # An Account object has only one currency; secondary currencies should be other accounts.
+        balance = content.xpath('//div[@class="body"]//ul/li[@class="balance"]/span')
+        if balance:
+            balance = balance[0].text_content().strip()
+            account.balance = clean_amount(balance)
+            # The primary currency of the "head balance" is the same; ensure we got the right one
+            assert account.currency == account.get_currency(balance)
+
         return account