service

#!/usr/bin/python
import os
import re
import traceback
import threading
import time
import json
import sys
import pytz
from calendar import timegm
from datetime import datetime, timedelta
from select import select
from evdev import ecodes, InputDevice, list_devices
from evdev.events import KeyEvent
from hosted import config, node, device
from ibquery import InfoBeamerQuery

config.restart_on_update()

if config.timezone == 'device':
    schedule_tz = config.metadata_timezone
else:
    schedule_tz = pytz.timezone(config.timezone)

def iter_tiles(types=None):
    for schedule in config.schedules:
        for page in schedule['pages']:
            for tile in page['tiles']:
                if not types or tile['type'] in types:
                    yield tile
    for layout in config.layouts:
        for tile in layout['tiles']:
            if not types or tile['type'] in types:
                yield tile

all_timezones = {
    schedule_tz.zone: schedule_tz,
}
for tile in iter_tiles('time'):
    tile_tz = tile['config'].get('timezone')
    if tile_tz:
        all_timezones[tile_tz] = pytz.timezone(tile_tz)
print >>sys.stderr, all_timezones

countdowns = set()
for tile in iter_tiles('countdown'):
    countdowns.add(tile['config'].get('target', ''))
print >>sys.stderr, countdowns


try:
    sim_date, sim_time = config.time.strip().split()
    d, m, y = sim_date.split('.')
    ho, mi = sim_time.split(':')

    utc_now = datetime.now(pytz.utc)
    local_now = utc_now.astimezone(schedule_tz)
    simulated = schedule_tz.localize(datetime(int(y), int(m), int(d), int(ho), int(mi), 00))

    diff =  simulated - local_now
except:
    diff = timedelta()

print >>sys.stderr, "timedelta for simulation: %r" % (diff,)

devices = {}
def update_devices():
    new = set(list_devices("/dev/input/"))
    old = set(devices.keys())

    for device_name in new - old:
        devices[device_name] = InputDevice(device_name)

    for device_name in old - new:
        del devices[device_name]

def send_clock(tz):
    utc_now = datetime.now(pytz.utc) + diff

    unix = timegm(utc_now.timetuple()) + utc_now.microsecond / 1000000.
    local_now = utc_now.astimezone(tz)
    # print >>sys.stderr, 'local now', local_now

    since_midnight = (
        local_now -
        local_now.replace(hour=0, minute=0, second=0, microsecond=0)
    )
    since_midnight = since_midnight.seconds + since_midnight.microseconds / 1000000.

    monday = (local_now - timedelta(days = local_now.weekday())).replace(hour=0, minute=0, second=0, microsecond=0)
    since_monday = local_now - monday
    since_monday = since_monday.days * 86400 + since_monday.seconds + since_monday.microseconds / 1000000.

    node['/clock/%s' % tz.zone](json.dumps(dict(
        year = local_now.year,
        month = local_now.month,
        day = local_now.day,
        unix = unix,
        dow = local_now.weekday(),
        since_midnight = since_midnight,
        since_monday = int(since_monday),
        week_hour = int(since_monday / 3600),
        diff = diff.total_seconds(),
    )))

def send_countdown(countdown_target):
    try:
        target = datetime.strptime(countdown_target, "%Y-%m-%d %H:%M:%S")
    except ValueError as err:
        traceback.print_exc()
        return
    target = schedule_tz.localize(target)
    target = target.astimezone(pytz.UTC)
    unix = timegm(target.timetuple())
    node['/countdown'](json.dumps(dict(
        target = countdown_target,
        unix = unix,
    )))

def device_event(event):
    print >>sys.stderr, event

    if event.code in ecodes.BTN:
        btn = ecodes.BTN[event.code]
        if not isinstance(btn, list):
            btn = [btn]
        for name in btn:
            node.send('/event/pad:%s' % json.dumps(dict(
                key = name.replace("BTN_", "pad_").lower(),
                action = {
                    KeyEvent.key_up: "up",
                    KeyEvent.key_down: "down",
                }[event.value],
            )))
    
    if event.type == ecodes.EV_KEY and event.code in ecodes.KEY:
        node.send('/event/keyboard:%s' % json.dumps(dict(
            key = ecodes.KEY[event.code].replace("KEY_", "").lower(),
            action = {
                KeyEvent.key_up: "up",
                KeyEvent.key_down: "down",
                KeyEvent.key_hold: "hold",
            }[event.value],
        )))

def monitor_input():
    update_devices()
    r, w, e = select(devices.values(), [], [], 1)
    for event in r:
        try:
            for ev in event.read():
                device_event(ev)
        except IOError:
            # device disconnected
            pass

def send_time():
    if time.time() < 10000000:
        print >>sys.stderr, "too soon"
        time.sleep(1)
        return
    for name, tz in all_timezones.iteritems():
        send_clock(tz)
    for target in countdowns:
        send_countdown(target)
    time.sleep(0.5)

def monitor_gpio():
    pins = set()
    for schedule in config.schedules:
        for page in schedule['pages']:
            key = page.get('interaction', {}).get('key', '')
            m = re.match('gpio_(.*)', key)
            if m:
                pins.add(int(m.group(1)))
    if not pins:
        time.sleep(120)
        return

    print >>sys.stderr, "gpios active: %s" % (pins,)
    for pin in pins:
        device.gpio.monitor(pin)
    for pin, high in device.gpio.poll_forever():
        if high:
            node.send('/event/gpio:%s' % json.dumps(dict(
                pin = pin,
            )))

def screen_toggle():
    ib = InfoBeamerQuery("127.0.0.1")
    con = ib.node('root/__fallback__').io(raw=True)
    for line in con:
        line = line.strip()
        print >>sys.stderr, "screen power: %s" % (not config.poweroff or line == "1",)
        # device.screen(
        #     on = not config.poweroff or line == "1"
        # )

def run_in_thread(fn):
    def wrap():
        try:
            while 1:
                fn()
        except Exception:
            traceback.print_exc()
            os._exit(1)
    thread = threading.Thread(target=wrap)
    thread.daemon = True
    thread.start()

if __name__ == "__main__":
    run_in_thread(send_time)
    run_in_thread(screen_toggle)
    run_in_thread(monitor_input)
    run_in_thread(monitor_gpio)

    while 1: time.sleep(1000)