import glob
import os
import time
import trigger
import utils
from datetime import datetime

class any_camera_trigger(trigger.trigger):
    def __init__(self):
        self.triggers_in_the_past_seven_min = {
            "driveway" :       0,
            "frontdoor" :      0,
            "cabin_driveway" : 0,
            "backyard" :       0,
        }
        self.last_trigger = {
            "driveway" :       0,
            "frontdoor" :      0,
            "cabin_driveway" : 0,
            "backyard" :       0,
        }

    def choose_priority(self, camera, age):
        base_priority_by_camera = {
            "driveway" : 1,
            "frontdoor" : 2,
            "cabin_driveway" : 1,
            "backyard" : 0,
        }
        priority = base_priority_by_camera[camera]
        if age < 10:
            priority += trigger.trigger.PRIORITY_HIGH
        elif age < 30:
            priority += trigger.trigger.PRIORITY_NORMAL + age
        else:
            priority += trigger.trigger.PRIORITY_LOW
        return priority

    def get_triggered_page_list(self):
        triggers = []
        cameras_with_recent_triggers = 0
        camera_list = [ "driveway",
                        "frontdoor",
                        "cabin_driveway",
                        "backyard" ]

        now = time.time()
        try:
            # First pass, just see whether each camera is triggered and,
            # if so, count how many times in the past 7m it has triggered.
            for camera in camera_list:
                file = "/timestamps/last_camera_motion_%s" % camera
                ts = os.stat(file).st_ctime
                age = now - ts
                # print "Camera: %s, age %s" % (camera, age)
                if age < 60:
                    cameras_with_recent_triggers += 1
                    time_since_last_trigger = now - self.last_trigger[camera]
                    self.last_trigger[camera] = now
                    if time_since_last_trigger < (60 * 7):
                        self.triggers_in_the_past_seven_min[camera] += 1
                    else:
                        self.triggers_in_the_past_seven_min[camera] = 1

            # Second pass, see whether we want to trigger due to
            # camera activity we found.  All cameras timestamps were
            # just considered and should be up-to-date.  Some logic to
            # squelch spammy cameras unless more than one is
            # triggered at the same time.
            for camera in camera_list:
                if self.last_trigger[camera] == now:
                    ts = utils.timestamp()
                    if (self.triggers_in_the_past_seven_min[camera] <= 4 or
                        cameras_with_recent_triggers > 1):
                        p = self.choose_priority(camera, age)
                        print "%s: ****** %s[%d] CAMERA TRIGGER ******" % (
                            ts, camera, p)
                        triggers.append( ( "hidden/%s.html" % camera,
                                           self.choose_priority(camera, age)) )
                    else:
                        print "%s: Camera %s too spammy, squelching it" % (
                            ts, camera)
        except Exception as e:
            print e
            pass

        if len(triggers) == 0:
            return None
        else:
            return triggers

#x = any_camera_trigger()
#print x.get_triggered_page_list()