#!/usr/bin/env python

import gtk
import pygtk
import time
import sys
from daemon import Daemon
from subprocess import call
from random import choice
from string import ascii_letters, digits
from os import listdir as ls, rename
from os.path import exists, isfile, join, splitext
pygtk.require('2.0')


# Config
SSH_PORT = 1337
PATH = "/home/ian/Dropbox/projects/files/screenshots"
BASE_URL = "http://files.ianonavy.com/"
SCP_PATH = "vpn.ianonavy.com:sites/ianonavy.com/files"
WAIT_INTERVAL = 1


class FilesDaemon(Daemon):

    def run(self):
        """
        Constantly loops checking for a new file. It's not very efficient, but
        it gets the job done.

        """

        print "Loading list of all files..."
        # Get list of all files.
        files = [f for f in ls(PATH) if isfile(join(PATH, f))]
        print "Done! Waiting for some new files."

        while 1:
            for f in ls(PATH):
                filename = join(PATH, f)  # Get the full file path.

                if isfile(filename):
                    if f not in files:
                        #print f, files

                        base, extension = splitext(f)
                        new_filename = self.random_filename(extension=extension)
                        rename(filename, join(PATH, new_filename))
                        files.append(new_filename)

                        self.upload(join(PATH, new_filename))
                        image_url = "%s%s" % (BASE_URL, new_filename)
                        self.copy_to_clipboard(image_url)

            time.sleep(WAIT_INTERVAL)

    def upload(self, filename):
        """ Uploads a file to the remote host. """
        print "scp -P %d %s %s" % (SSH_PORT, filename, SCP_PATH)
        call("scp -P %d %s %s" % (SSH_PORT, filename, SCP_PATH), shell=True)

    def copy_to_clipboard(self, text):
        """ Copies the passed argument to the clipboard. """
        clipboard = gtk.clipboard_get()
        clipboard.set_text(text)
        clipboard.store()  # Let other programs use it.

    def random_filename(self, length=4, extension='', attempts=10):
        """ Generates a random filename and verifies that it doesn't exist. """
        chars = ''.join([ascii_letters, digits])
        for attempt in range(attempts):
            filename = ''.join([choice(chars) for i in range(length)])
            filename = filename + extension
            if not exists(filename):
                return filename


if __name__ == "__main__":
    daemon = FilesDaemon('/tmp/filesd.pid')
    if len(sys.argv) == 2:
        if 'start' == sys.argv[1]:
            daemon.start()
        elif 'stop' == sys.argv[1]:
            daemon.stop()
        elif 'restart' == sys.argv[1]:
            daemon.restart()
        else:
            print "Unknown command"
            sys.exit(2)
        sys.exit(0)
    else:
        print "usage: %s {start|stop|restart}" % sys.argv[0]
        sys.exit(2)