# vi: encoding=utf-8 ts=8 sts=4 sw=4 et

import time
import os
import sys
if sys.version_info[0] == 2:
    import StringIO
else:
    import io as StringIO

import config
cval=config.value

class Message:
    def __init__(self):
        self.headers = {}
        self.body = StringIO.StringIO()
        self.__set_std_headers()

    def set_header(self, n, v):
        self.headers[n] = v

    def set_headers(self, to = None, cc = None, subject = None):
        if to != None:
            self.set_header("To", to)
        if cc != None:
            self.set_header("Cc", cc)
        if subject != None:
            self.set_header("Subject", subject)

    def write_line(self, l):
        self.body.write("%s\n" % l)

    def write(self, s):
        self.body.write(s)

    def send(self):
        send_sendmail = "/usr/sbin/sendmail -t"
        f = os.popen(send_sendmail, "w")
        self.__write_to(f)
        f.close()

    def __set_std_headers(self):
        self.headers["Date"] = time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime())
        self.headers["Message-ID"] = "<tld-builder.%f.%d@%s>" \
                % (time.time(), os.getpid(), os.uname()[1])
        self.headers["From"] = cval['from_field']
        self.headers["X-TLD-Builder"] = cval['xtldbuilder']

    def __write_to(self, f):
        for k, v in self.headers.items():
            f.write("%s: %s\n" % (k, v))
        f.write("\n")
        self.body.seek(0)
        self.__sendfile(self.body, f)

    def __sendfile(self, src, dst):
        cnt = 0
        while 1:
            s = src.read(10000)
            if s == "": break
            cnt += len(s)
            dst.write(s)
        return cnt