#!/usr/bin/env python


import yaml
try:
    from yaml import CLoader as Loader
    from yaml import CDumper as Dumper
except ImportError:
    from yaml import Loader, Dumper
import time
import Image
from StringIO import StringIO
import httplib2
import urllib
import os

settings = 'vCam.cfg'

def getSettings():
  f = open(settings, 'r')
  cfg = yaml.load(f,Loader=Loader)
  f.close()
  return cfg

def getRequest(cam):
  thiscfg = cfg[cam]
  try:
    http = httplib2.Http(".cache")
    http.add_credentials(thiscfg['usr'], thiscfg['pwd'])
    response, content = http.request(thiscfg['url'], 'GET')
  except:
    print "err"
    print sys.exc_info()
  return content

def writeRawImage(cam, stream):
  path = "store/%s/%s" % (cfg[cam]['store'], 'raw.jpg')
  f = open(path, 'w')
  f.write(stream)
  f.close()

def writeHistory(cam, stream):
  file = "%s.jpg" % time.time()
  path = "store/%s/%s" % (cfg[cam]['history'], file)
  f = open(path, 'w')
  f.write(stream)
  f.close()

def writeResize(cam, version, stream):
  pathTo = "store/%s/%s" % (cfg[cam]['store'], '%s.jpg' % version)
  i = Image.open(StringIO(stream))
  i = i.resize((cfg[cam]['%s_x' % version], cfg[cam]['%s_y' % version ] ), Image.NEAREST)
  i.save(pathTo)

#def getOpts():
#  parser = OptionParser()
#  parser.add_option("-c", "--cam", dest="cam", help="Camera, data is obtained from vCam.cfg")
#  (options, args) = parser.parse_args()
#  return options

def getLow(cam):
  path = "store/%s/lo.jpg" % (cfg[cam]['store'])
  f = open( "%s" % ( path ) , 'rb')
  img = f.read()
  f.close()
  return img

def getHigh(cam):
  path = "store/%s/" % (cfg[cam]['history'])
  files = os.listdir(path)
  files.sort(key=lambda s: os.path.getmtime(os.path.join(path, s)))

  f = open( "%s/%s" % ( path, files[-1] ) , 'rb')
  img = f.read()
  f.close()
  return img

def getWwwCam():
  cfg={}
  q = os.environ['QUERY_STRING'].split('&')
  for line in q:
    try:
      k,v = line.split('=')
      cfg[k] = v
    except:
      continue
  try:
    return cfg['cam']
  except:
    return False

def isWwwLow():
  q = os.environ['QUERY_STRING'].split('&')
  for line in q:
    try:
      k,v = line.split('=')
      cfg[k] = v
    except:
      continue
  try:
    return cfg['res']
  except:
    return False
def getCams():
  cams={}
  for cam in sorted([cam for cam in cfg.keys() if(cfg[cam].has_key('url'))]):
    cams[cam]=cfg[cam]['name']
  return cams

cfg = getSettings()