from datetime import datetime, timedelta, timezone
from PIL import Image, ImageDraw, ImageFont

import cache
import ptv

# Data
now = datetime.now(timezone.utc)
with cache.open() as c:
    ptv_data = {
        k: (v - now) // timedelta(minutes=1) if v else '-'
        for k, v in ptv.get_departure_data(now, c).items()
    }

BLACK  = 0x000000 # 00 BGR
WHITE  = 0xffffff # 01
YELLOW = 0x00ffff # 10
RED    = 0x0000ff # 11
fontstd = ImageFont.truetype('assets/NETWORKSANS-2019-REGULAR.TTF', 64)
fontmins = ImageFont.truetype('assets/NETWORKSANS-2019-BOLD.TTF', 96)
fonttime = ImageFont.truetype('assets/NETWORKSANS-2019-REGULAR.TTF', 92)
fontmm = ImageFont.truetype('assets/NETWORKSANS-2019-REGULAR.TTF', 20)
fonthigh = ImageFont.truetype('assets/NETWORKSANS-2019-REGULAR.TTF', 42)

image = Image.new('RGB', (800, 480), WHITE)
draw = ImageDraw.Draw(image)

# Backing image
with Image.open('assets/ui test 3.png').convert('RGBA') as bg:
    image.paste(bg, (0, 0))

# Time
timehour = f'{now:%H}'
timemin = f'{now:%M}'
timehourlength = draw.textlength(timehour, font=fonttime)-3
timeminstart = timehourlength + draw.textlength(':', font=fonttime)-3
draw.text((-3, 480-3), timehour, font=fonttime, anchor="ls", fill=WHITE)
draw.text((timehourlength, 480-12), f':', font=fonttime, anchor="ls", fill=WHITE)
draw.text((timeminstart, 480-3), timemin, font=fonttime, anchor="ls", fill=WHITE)

# Date
dateday = f'{now:%d}'
datedaylength = draw.textlength(dateday, font=fontstd)
draw.text((-3, 320), dateday, font=fontstd, anchor="ls", fill=WHITE)
draw.text((datedaylength + 5, 320), f'{now:%b}', font=fontstd, anchor="lt", fill=WHITE)

# Temperature
temp = 6
temphigh = 6
draw.text((-3, 200), f'{temp}°', font=fontstd, anchor="ls", fill=WHITE)
draw.text((124, 238), f'{temphigh}', font=fonthigh, anchor="ms", fill=WHITE)

# Rainfall
rainfall = 6
rainthreshold = 5
if rainfall > rainthreshold:
    rainimgpath = 'assets/rain.png'
else:
    rainimgpath = 'assets/sun.png'
draw.text((40, 0), f'{rainfall}', font=fontstd, anchor="mt")
with Image.open(rainimgpath) as rainimg:
    image.paste(rainimg, mask=rainimg)
draw.text((40, 55), f'mm', font=fontmm, anchor="mt")

# ETAs
leftminsx = 375
centerminsx = 545
rightminsx = 715
busminsy = 75
trainminsy = 235
tramminsy = 395
draw.text((leftminsx, busminsy), f'{ptv_data["612 S"]}', font=fontmins, anchor="mt", fill=BLACK)
draw.text((centerminsx, busminsy), f'{ptv_data["612 N"]}', font=fontmins, anchor="mt", fill=BLACK)
draw.text((rightminsx, busminsy), f'{ptv_data["766 N"]}', font=fontmins, anchor="mt", fill=BLACK)
draw.text((leftminsx, trainminsy), f'{ptv_data["Union W Express"]}', font=fontmins, anchor="mt", fill=BLACK)
draw.text((centerminsx, trainminsy), f'{ptv_data["Union W"]}', font=fontmins, anchor="mt", fill=BLACK)
draw.text((rightminsx, trainminsy), f'{ptv_data["Union E"]}', font=fontmins, anchor="mt", fill=BLACK)
draw.text((centerminsx, tramminsy), f'{ptv_data["109 W"]}', font=fontmins, anchor="mt", fill=BLACK)
draw.text((rightminsx, tramminsy), f'{ptv_data["70 W"]}', font=fontmins, anchor="mt", fill=BLACK)

image.save('test_before_palette.png')

# Dither into eink palette
pal_image = Image.new('P', (1, 1))
pal_image.putpalette((0x00,0x00,0x00, 0xff,0xff,0xff, 0xff,0xff,0x00, 0xff,0x00,0x00) + (0x00,0x00,0x00)*252)
# Convert the source image to the 4 colors, dithering if needed
image_4color = image.quantize(palette=pal_image, dither=Image.NONE)
image_4color.save('test_after_palette.png')

show_on_screen = False
if show_on_screen:
    import epd7in3g as epd
    try:
        epd.init()
        epd.display(epd.get_buffer(image))
        input('Press Enter to clear')
    finally:
        epd.clear()
        epd.epdconfig.module_exit(cleanup=True)