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config.py
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config.py
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from enum import Enum
from io import BytesIO
import time
from image import recolor, thumbnails
from util import check_wifi, safe_get
from PIL import Image
from env import jsonblob_config_url
class GraphicsMode(Enum):
Image = "IMAGE"
Script = "SCRIPT"
default_rotation = -90
default_brightness = 0.4
default_dim_start_hour = 22
default_dim_start_min = 0
default_dim_end_hour = 8
default_dim_end_min = 0
default_dim_brightness = 0.05
default_graphics_mode = GraphicsMode.Image
class Config:
def __init__(self, unicorn):
# Load in the cached image and no internet image
self._cache_file = "cache.webp"
display_width, display_height = unicorn.get_shape()
try:
self._cache_img = Image.open(self._cache_file)
except:
self._cache_img = Image.new(mode="1", size=(display_width, display_height))
self._no_wifi_img = recolor(
Image.open("nowifi.webp"), (255, 255, 255), (124, 242, 252)
)
self._bad_script_img = recolor(
Image.open("badscript.webp"), (255, 255, 255), (252, 124, 124)
)
self._img = None
self._had_wifi = False
self.graphics_mode = default_graphics_mode
self.img_url = None
self.frames = None
self.rotation = default_rotation
self.brightness = default_brightness
self.dim_start_hour = default_dim_start_hour
self.dim_start_min = default_dim_start_min
self.dim_end_hour = default_dim_end_hour
self.dim_end_min = default_dim_end_min
self.dim_brightness = default_dim_brightness
self.setup_script = None
self.loop_script = None
self._use_cache_img()
def fetch(self) -> bool:
# Display a Wi-Fi symbol if the device has not been connected to the internet
if not check_wifi():
print("Waiting for internet connection.")
if not self._had_wifi:
self.set_image(self._no_wifi_img)
return False
self._had_wifi = True
response = safe_get(jsonblob_config_url)
if response == None or response.status_code != 200:
print("Unable to fetch config.")
self._use_cache_img()
return False
config = response.json()
# Set the rotation and brightness
self.rotation = config["rotation"]
self.brightness = config["brightness"]
# Set the dimming settings
self.dim_start_hour = config["dim_start"]["hour"]
self.dim_start_min = config["dim_start"]["minute"]
self.dim_end_hour = config["dim_end"]["hour"]
self.dim_end_min = config["dim_end"]["minute"]
self.dim_brightness = config["dim_brightness"]
self.graphics_mode = config["graphics_mode"]
if self.graphics_mode == GraphicsMode.Image.value:
return self._update_image(config)
elif self.graphics_mode == GraphicsMode.Script.value:
return self._update_script(config)
def set_image(self, img):
self._img = img
self.frames = thumbnails(self._img)
def _update_image(self, config):
# Update the displayed image if it changed
if config["image_url"] != self.img_url:
# Only update the image if it is valid
response = safe_get(config["image_url"])
if response == None or response.status_code != 200:
print("Unable to fetch image.")
self._use_cache_img()
return False
self.img_url = config["image_url"]
self._img = Image.open(BytesIO(response.content), formats=["WEBP"])
self._img.save(self._cache_file, save_all=True, lossless=True, quality=0)
self.frames = thumbnails(self._img)
return True
return False
def _update_script(self, config):
did_update = (
self.setup_script != config["script"]["setup"]
or self.loop_script != config["script"]["loop"]
)
# Update the script used on the device
self.setup_script = config["script"]["setup"]
self.loop_script = config["script"]["loop"]
return did_update
@property
def dim_mode(self):
current_hour = time.localtime().tm_hour
current_min = time.localtime().tm_min
after_start = (
current_hour == self.dim_start_hour and current_min >= self.dim_start_min
) or current_hour >= self.dim_start_hour
before_end = (
current_hour == self.dim_end_hour and current_min < self.dim_end_min
) or current_hour < self.dim_end_hour
return (
(
(
self.dim_start_hour == self.dim_end_hour
and self.dim_end_min < self.dim_start_min
)
or (self.dim_start_hour > self.dim_end_hour)
)
and (after_start or before_end)
) or (after_start and before_end)
def _use_cache_img(self):
self.img_url = None
if self._img != self._cache_img:
self._img = self._cache_img
self.frames = thumbnails(self._img)