import sys
import os
import csv
import subprocess
import ldap

#columns = [ 'timestamp', 'first', 'last', 'email', 'constituency', 'year', 'major', 'cell', 'mitid', 'retreat', 'whynot', 'project', 'othermit', ]
format = "%(first_with_initial)s;%(last_canonical)s;%(mitid)s"

def dictize_line(header, line,):
    line_dict = {}
    for key, elem in zip(header, line, ):
        line_dict[key]=elem
    return line_dict



def get_ldap_data(username, fields):
    con = ldap.open('ldap.mit.edu')
    con.simple_bind_s("", "")
    dn = "dc=mit,dc=edu"
    result = con.search_s('dc=mit,dc=edu', ldap.SCOPE_SUBTREE, 'uid=%s'%username, fields)
    if len(result) > 1: print "WARNING: More than one result returned for %s" % username
    if len(result) < 1: print "WARNING: Only one result returned for %s" % username
    ret = {}
    for key in result[0][1]:
        ret[key] = result[0][1][key][0]
    return ret

def get_data_dict(line_dict):
    email = line_dict['email']
    username = email.replace('@mit.edu', '')
    ldap = get_ldap_data(username, [ 'cn' , 'sn' , 'givenName' ])
    first = ldap['givenName'].replace(' ', '_').upper()
    last = ldap['sn'].replace(' ', '_').upper()
    mitid = line_dict['mitid']
    data_dict = { 'first_with_initial': first, 'last_canonical': last, 'mitid': mitid }
    return data_dict
    
def format_line(data_dict):
    return format % data_dict
    

def do_produce_card_info(db = sys.stdin):
    reader = csv.reader(db, )
    lines = []

    header = reader.next()
    line_dict = dictize_line(header, header, )
    data_dict = { 'first_with_initial': 'FIRST_M', 'last_canonical': 'LASTNAME', 'mitid': 'MIT ID' }
    lines.append(format_line(data_dict))

    for line in reader:
        line_dict = dictize_line(header, line)
        #print line_dict
        lines.append(format_line(get_data_dict(line_dict)))
    print '\n'.join(lines)

if __name__== '__main__':
    do_produce_card_info()