User:Andre Castro/prototyping/1.2/traces

Trance

About the project: Traces is a story written by Giulia Ciliberto, told by email in short parts, one per day

Links

Front-end: http://pzwart3.wdka.hro.nl/~slorusso/traces/

Form handler: /home/acastro/public_html/cgi-bin/traces_form_handler.cgi

Text: /home/acastro/public_html/cgi-bin/traces-text.txt

Database: /home/acastro/public_html/cgi-bin/traces-database.xml

Part1 Form and email subscription into database

Form handler: /home/acastro/public_html/cgi-bin/traces_form_handler.cgi

• users subscribe their email address in front-end

• html page calls traces_form_handler.cgi

• cgi receives email address appends it within the today's date node in traces-database.xml

#!/usr/bin/python2.6
import cgi, cgitb, lxml.etree, datetime, os
from datetime import *
 
date_now = datetime.now()
today = date_now.strftime("%Y-%m-%d") 
date_delta = timedelta(days=22)
 
date_old = (date_now - date_delta).strftime("%Y-%m-%d") 
print date_old
 
 
# Create instance of FieldStorage 
form = cgi.FieldStorage() 
# Get email from form 
email = form.getvalue('email') 
 
 
 
#APPEND EMAIL AND DATE TO XML FILE
 
if os.path.exists('/home/acastro/public_html/cgi-bin/traces-database.xml'):
	#open file
	doc = lxml.etree.parse('/home/acastro/public_html/cgi-bin/traces-database.xml')
	entries = doc.find('entries') # find root element
 
	node_today = '//date[@date="'+ str(today) + '"]'
	old_node = '//date[@date="'+ str(date_old ) + '"]'
 
	#remove outdated addresses
	for outdated in doc.xpath(old_node):
		outdated.getparent().remove(outdated)# here I grab the parent of the element to call the remove directly on it
 
	#check if todays date element is present
	if today not in doc.xpath('//@date'): 
		date = lxml.etree.SubElement(entries, "date", attrib={'date':today} )  	#append date SubElement date
		addrs = lxml.etree.SubElement(date, "address")#append grandchild
		addrs.text = str(email)
 
	else:
		test = doc.xpath(node_today)
		addrs = lxml.etree.SubElement(test[0], "address")#append grandchild
		addrs.text = email
 
	doc.write('/home/acastro/public_html/cgi-bin/traces-database.xml',xml_declaration=True,encoding='utf-8') #write
 
 
 
else:  
	#Create a new file
	root = lxml.etree.Element('email-address')
	entries = lxml.etree.SubElement(root, 'entries')
	dates = lxml.etree.SubElement(entries, "date", attrib={'date':today} )  	#append date
	addrs = lxml.etree.SubElement(dates, "address")#append grandchild
	addrs.text = str(email)
	tree = lxml.etree.ElementTree(root)
	tree.write('/home/acastro/public_html/cgi-bin/traces-database.xml', pretty_print=True, xml_declaration=True,encoding='utf-8')
	tree.close()

part2 and 3 Days calculations and sending emails

/home/acastro/public_html/cgi-bin/traces_date_email.py

Script which parses xml database. Checks the dates and email address under each date. According the date decides what part of story will be send

#! /usr/bin/python
# coding: utf-8
import lxml.etree, re
import smtplib, email.utils
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from datetime import *
 
# Script that:
# 1: parses xml database. 
# 2: Checks the dates and email address under each date 
# 3: Sends the corresponding email part
 
#CRON IT FOR 1 x per Day
 
 
text_file = open('/home/acastro/public_html/cgi-bin/traces-text.txt', "r")
text = text_file.read() #CONTENT INTO VARIABLE !!!!
 
text_splited = text.split("\n\n@\n\n")
 
print text_splited[0]
print '##'
print text_splited[1]
print '##'
print len(text_splited)
 
f = ('/home/acastro/public_html/cgi-bin/traces-database.xml') 
database = lxml.etree.parse(f)
 
dates = database.xpath('//date') # database find dates 
#create the dictionary {date: [address, address]}
dateDict = {}
for date_subscription in dates:
 
	date_is_attr = date_subscription.get("date")
	myAddrs = database.xpath("//date[@date='{0}']/address/text()".format(date_is_attr))
	dateDict[date_is_attr] = myAddrs
#print dateDict
 
 
#creat list of 19 day dates, today and before today 
dates = []
for day in range(20):
	date = date.today()
	delta = timedelta(days= day)
	subtract = date - delta	
	dates.append(str(subtract))
 
print dates
 
 
#checks the dates when emails were subscribe 
#matchs them with the dates list
#sends the corresponding email part
for date in dateDict.keys():
	print date
	for i, value in enumerate(dates):
 
		if str(date) == value:
			email_addrs = dateDict[date] # list of receivers
			print email_addrs
 
			email_body =  '<html><body><div style="text-align: center; font-family: serif; font-size: 15px;"><br/><br/>@<br/><br/>' + text_splited[i] + '<br/><br/>@<br/><br/></div></body></html>'		
 
 
			msg = MIMEMultipart('alternative') #Create Multipart msg (allows html)
			msg['To'] = email.utils.formataddr(('Recipient', 'readers@traces.net'))
			msg['From'] = email.utils.formataddr(('Traces', 'traces@noreply.net'))
			msg['Subject'] = 'Traces @ part#' + str((i+1))
 
			part_html = MIMEText(email_body, 'html')
			msg.attach(part_html)
 
			server = smtplib.SMTP('localhost')
			server.set_debuglevel(False) # show communication with the server
			try:
				server.sendmail('traces@noreply.net', email_addrs, msg.as_string())
			finally:
				server.quit()

Examples on sending email

• multipart email - allows imgs attachments

import smtplib, email.utils
from email.mime.text import MIMEText
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
 
#Reference: http://docs.python.org/library/email-examples.html
 
 
# address list
addr = ['andrecastro@c-e-m.org', 'andrecastro83@gmail.com']#, 'silviolorusso@gmail.com']
 
msg = MIMEMultipart()
#msg = MIMEText('This is the b@dy of the message.') #Create the message (simple ASCII)
msg['To'] = email.utils.formataddr(('Recipient', 'readers@traces.net'))
msg['From'] = email.utils.formataddr(('Traces', 'traces@noreply.net'))
msg['Subject'] = 'Traces Multipart - test'
 
msg.attach( MIMEText('This is the b@dy of the email') )
 
#attach a picture
fp = open('animpnky_e0.gif', 'rb')
img = MIMEImage(fp.read())
fp.close()
msg.attach(img)
 
 
server = smtplib.SMTP('localhost')
server.set_debuglevel(False) # show communication with the server
try:
    server.sendmail('traces@noreply.net', addr, msg.as_string())
finally:
    server.quit()

• text email - plain text

import smtplib, email.utils
from email.mime.text import MIMEText
 
# address list
addr = ['andrecastro@c-e-m.org', 'andrecastro83@gmail.com']
#, 'silviolorusso@gmail.com']
 
msg = MIMEText('This is the b@dy of the message.') #Create the message (simple ASCII)
msg['To'] = email.utils.formataddr(('Recipient', 'readers@traces.net'))
msg['From'] = email.utils.formataddr(('Traces', 'traces@noreply.net'))
msg['Subject'] = 'Traces plain - test '
 
 
server = smtplib.SMTP('localhost')
server.set_debuglevel(False) # show communication with the server
try:
    server.sendmail('traces@noreply.net', addr, msg.as_string())
finally:
    server.quit()