import logging
+from decimal import Decimal, InvalidOperation
+
from bluechips.lib.base import *
-from bluechips.widgets import spend
+
+from pylons import request, app_globals as g
+from pylons.decorators import validate
+from pylons.decorators.secure import authenticate_form
+from pylons.controllers.util import abort
+
+from formencode import validators, Schema
+from formencode.foreach import ForEach
+from formencode.variabledecode import NestedVariables
+from formencode.schema import SimpleFormValidator
+
+from mailer import Message
log = logging.getLogger(__name__)
+
+class ShareSchema(Schema):
+ "Validate individual user shares."
+ allow_extra_fields = False
+ user_id = validators.Int(not_empty=True)
+ amount = validators.Number(not_empty=True)
+
+
+def validate_state(value_dict, state, validator):
+ if all(s['amount'] == 0 for s in value_dict['shares']):
+ return {'shares-0.amount': 'Need at least one non-zero share'}
+ValidateNotAllZero = SimpleFormValidator(validate_state)
+
+
+class ExpenditureSchema(Schema):
+ "Validate an expenditure."
+ allow_extra_fields = False
+ pre_validators = [NestedVariables()]
+ spender_id = validators.Int(not_empty=True)
+ amount = model.types.CurrencyValidator(not_empty=True)
+ description = validators.UnicodeString(not_empty=True)
+ date = validators.DateConverter()
+ shares = ForEach(ShareSchema)
+ chained_validators = [ValidateNotAllZero]
+
+
class SpendController(BaseController):
def index(self):
+ return self.edit()
+
+ def edit(self, id=None):
+ c.users = meta.Session.query(model.User.id, model.User)
+ if id is None:
+ c.title = 'Add a New Expenditure'
+ c.expenditure = model.Expenditure()
+ c.expenditure.spender_id = request.environ['user'].id
+
+ num_residents = meta.Session.query(model.User).\
+ filter_by(resident=True).count()
+ # Pre-populate split percentages for an even split.
+ c.values = {}
+ for ii, user_row in enumerate(c.users):
+ user_id, user = user_row
+ val = 0
+ if user.resident:
+ val = Decimal(100) / Decimal(num_residents)
+ c.values['shares-%d.amount' % ii] = val
+ else:
+ c.title = 'Edit an Expenditure'
+ c.expenditure = meta.Session.query(model.Expenditure).get(id)
+ if c.expenditure is None:
+ abort(404)
+ c.values = {}
+ for ii, user_row in enumerate(c.users):
+ user_id, user = user_row
+ shares_by_user = dict(((sp.user, sp.share) for sp
+ in c.expenditure.splits))
+ share = shares_by_user.get(user, 0)
+ if c.expenditure.amount == 0:
+ percent = 0
+ else:
+ percent = (Decimal(100) * Decimal(int(share)) /
+ Decimal(int(c.expenditure.amount))).\
+ quantize(Decimal("0.001"))
+ c.values['shares-%d.amount' % ii] = percent
+
return render('/spend/index.mako')
+
+ @redirect_on_get('edit')
+ @authenticate_form
+ @validate(schema=ExpenditureSchema(), form='edit', variable_decode=True)
+ def update(self, id=None):
+ # Either create a new object, or, if we're editing, get the
+ # old one
+ if id is None:
+ e = model.Expenditure()
+ meta.Session.add(e)
+ op = 'created'
+ else:
+ e = meta.Session.query(model.Expenditure).get(id)
+ if e is None:
+ abort(404)
+ op = 'updated'
+
+ # Set the fields that were submitted
+ shares = self.form_result.pop('shares')
+ update_sar(e, self.form_result)
+
+ users = dict(meta.Session.query(model.User.id, model.User).all())
+ split_dict = {}
+ for share_params in shares:
+ user = users[share_params['user_id']]
+ split_dict[user] = Decimal(str(share_params['amount']))
+ e.split(split_dict)
+
+ meta.Session.commit()
+
+ show = ("Expenditure of %s paid for by %s %s." %
+ (e.amount, e.spender, op))
+ h.flash(show)
+
+ # Send email notification to involved users if they have an email set.
+ involved_users = set(sp.user for sp in e.splits if sp.share != 0)
+ involved_users.add(e.spender)
+ body = render('/emails/expenditure.txt',
+ extra_vars={'expenditure': e,
+ 'op': op})
+ g.handle_notification(involved_users, show, body)
+
+ return h.redirect_to('/')
+
+ def delete(self, id):
+ c.title = 'Delete an Expenditure'
+ c.expenditure = meta.Session.query(model.Expenditure).get(id)
+ if c.expenditure is None:
+ abort(404)
+
+ return render('/spend/delete.mako')
+
+ @redirect_on_get('delete')
+ @authenticate_form
+ def destroy(self, id):
+ e = meta.Session.query(model.Expenditure).get(id)
+ if e is None:
+ abort(404)
+
+ if 'delete' in request.params:
+ meta.Session.delete(e)
+
+ meta.Session.commit()
+ show = ("Expenditure of %s paid for by %s deleted." %
+ (e.amount, e.spender))
+ h.flash(show)
+
+ involved_users = set(sp.user for sp in e.splits if sp.share != 0)
+ involved_users.add(e.spender)
+ body = render('/emails/expenditure.txt',
+ extra_vars={'expenditure': e,
+ 'op': 'deleted'})
+ g.handle_notification(involved_users, show, body)
+
+ return h.redirect_to('/')