#!/usr/bin/python3

import sys
import json
import subprocess
from time import sleep
from PyDMXControl.controllers import OpenDMXController
from PyDMXControl.profiles.Generic import Dimmer

# python3 playchannel.py <channel/name>

channeltest = sys.argv[1]

# 0-255 dim / brightness range 
# fadein, fadeout in milliseconds
brightness = 15
fadein = 1000
fadeout = 1000

data = json.load(open('sequence.json'))

print("\n * Reset USB device")
subprocess.call(['usbreset', "FT232R USB UART"])

print("\n ** DMX start...")
dmx = OpenDMXController()

## sort by "channel" -> channel/line number 
lines = sorted(data, key=lambda x: x["channel"])
## remove dupes and add lights once in this order 
channels = []
for l in lines:
    if l['channel'] not in channels:
        channels.append(l['channel'])
        line = dmx.add_fixture(Dimmer, name=l['channel'])
#print("\nAll channels:")
#print(channels)

#dmx.web_control()

c = [ i for i in lines if i["channel"] == channeltest ]
print(f"\n - Play channel: {channeltest}")
print("\nSequence JSON entry:")
print(c)
print(f"fadein: {fadein}")
print(f"fadeout: {fadeout}")

try:
    line = dmx.get_fixtures_by_name(channeltest)[0]
    line.dim(brightness, fadein)
    print("\n -*- Press Ctrl-C to stop...\n")
    sleep(1000)
except KeyboardInterrupt:
    line.dim(0, fadeout)
    sleep(fadeout/1000 + 1)
    dmx.close()
    print()
    sys.exit()
print()