#!/usr/bin/env python
import linux_uinput, ctypes, fcntl, os, sys
from cinput import *
from mapper import KeyMapper, parse_conf, pretty_conf_print, \
    get_exported_device_count
from linux_input import timeval, input_event

try:
    import cPickle as pickle
except ImportError:
    import pickle

import imp
import optparse

_usage = 'python create.py /path/to/config1 ... /path/to/configN'
parser = optparse.OptionParser(description='Create input devices.',
        usage=_usage,
        version='0.01'
        )
parser.add_option('-C', '--compat', action='store_true',
        help='Enable compatibility mode; for Python < 2.7')
parser.add_option('-v', '--verbose', action='store_true',
        help='Enable verbose mode')

args, cfg = parser.parse_args()

# Unpickle from stdin ; currently this is the default and only way
in_f = pickle.Unpickler(sys.stdin)

# Read input device count
nifd = in_f.load()

# Read configuration
conf = in_f.load()

if args.verbose:
    pretty_conf_print(conf)

# Allow configurations to change our current configuration
for path in cfg:
    config_merge = imp.load_source('', path).config_merge
    config_merge(conf)

if args.verbose:
    pretty_conf_print(conf)

m = KeyMapper(conf)

# Get number of output devices (determined from conf)
nofd = get_exported_device_count(conf)

# Create and expose uinput devices
ofs = []
for f in xrange(nofd):
    d = UInputDevice()
    m.expose(d, f)
    d.setup('Example input device')
    ofs.append(d)

# Map events
while True:
    if not args.compat:
        fd, ev = in_f.load()
    else:
        fd, ev_p = in_f.load()
        ti = timeval(ev_p[0], ev_p[1])
        ev = input_event(ti, ev_p[2], ev_p[3], ev_p[4])

    idx, ev = m.map_event(ev, fd)
    d = ofs[idx]

    d.fire_event(ev)