Merge pull request 'dotenv' (#7) from feature/dotenv into master

Reviewed-on: pvx/litsimaja#7

README.md

@@ -8,20 +8,9 @@ Projekt Litsimaja - Lapikute tagatoa seintele programmeeritavad ARGB ribad
 #### Running with emulation
 This is mainly for testing, development.
 
-In ``lib/Litsimaja.py`` change the following:
-```
-# from lib.strip.TkinterStrip import TkinterStrip
+Create .env file:
+```cp .env.example .env```
 
-    def __init__(self):
-        self._strip = PixelStrip(290, 18, 800000, 10, False, 255, 0, 4104)
-```
-to
-```
-from lib.strip.TkinterStrip import TkinterStrip
+and see: ```USE_EMULATOR```
 
-    def __init__(self):
-        self._strip = TkinterStrip(290, 18, 800000, 10, False, 255, 0, 4104)
-```
 Now when you run the program, you will see a Tkinter window pop up with a rectangle simulating the LED strip.
-
-Don't commit this change.

pyleds/.env.defaults

@@ -0,0 +1,17 @@
+ENVIRONMENT=prod
+USE_EMULATOR=false
+BIND_ADDR=127.0.0.1
+BIND_PORT=8080
+
+# Strip configuration
+STRIP_PIXELS=290
+STRIP_GPIO_PIN=18
+STRIP_HZ=800000
+STRIP_DMA=10
+STRIP_INVERT=false
+STRIP_BRIGHTNESS=255
+STRIP_CHANNEL=0
+STRIP_TYPE=4104
+
+REGIONS=46,96,191,241
+BPM_DEFAULT=60

pyleds/.env.example

@@ -0,0 +1,2 @@
+ENVIRONMENT=dev
+USE_EMULATOR=true

pyleds/.gitignore

@@ -1 +1,2 @@
+.env
 litsimaja.log

pyleds/lib/Config.py

@@ -0,0 +1,36 @@
+from dotenv import dotenv_values
+
+
+def populate_values(load: {}):
+    conf = load
+    conf['IS_DEV']: bool = str.lower(load['ENVIRONMENT']) == 'dev'
+    conf['USE_EMULATOR']: bool = str.lower(load['USE_EMULATOR']) == 'true'
+    conf['BIND_PORT']: int = int(load['BIND_PORT'])
+
+    conf['STRIP_PIXELS']: int = int(load['STRIP_PIXELS'])
+    conf['STRIP_GPIO_PIN']: int = int(load['STRIP_GPIO_PIN'])
+    conf['STRIP_HZ']: int = int(load['STRIP_HZ'])
+    conf['STRIP_DMA']: int = int(load['STRIP_DMA'])
+    conf['STRIP_INVERT']: bool = str.lower(load['STRIP_INVERT']) == 'true'
+    conf['STRIP_BRIGHTNESS']: int = int(load['STRIP_BRIGHTNESS'])
+    conf['STRIP_CHANNEL']: int = int(load['STRIP_CHANNEL'])
+    conf['STRIP_TYPE']: int = int(load['STRIP_TYPE'])
+
+    conf['REGIONS']: [] = [int(x) for x in load['REGIONS'].split(',')]
+    conf['BPM_DEFAULT']: int = int(load['BPM_DEFAULT'])
+
+    return conf
+
+
+class Config(object):
+    _config: {} = {}
+
+    def __init__(self):
+        load_conf = {
+            **dotenv_values(".env.defaults"),
+            **dotenv_values(".env"),
+        }
+        self._config = populate_values(load_conf)
+
+    def get(self, key: str):
+        return self._config[key]

pyleds/lib/Litsimaja.py

@@ -1,6 +1,4 @@
-from rpi_ws281x import PixelStrip
-# from lib.strip.WindowStrip import WindowStrip
-# from lib.strip.TkinterStrip import TkinterStrip
+from lib.Config import Config
 from lib.LoopSwitch import LoopSwitch
 from lib.Regions import Regions
 from lib.Tempo import Tempo
@@ -8,11 +6,24 @@ from lib.Tempo import Tempo
 
 class Litsimaja(object):
     def __init__(self):
-        self._strip = PixelStrip(290, 18, 800000, 10, False, 255, 0, 4104)
+        self._config = Config()
+        if self.conf('USE_EMULATOR'):
+            module = __import__('lib.strip.TkinterStrip', None, None, ['TkinterStrip'])
+            class_name = 'TkinterStrip'
+        else:
+            module = __import__('rpi_ws281x', None, None, ['PixelStrip'])
+            class_name = 'PixelStrip'
+
+        loaded_class = getattr(module, class_name)
+        self._strip = loaded_class(
+            self.conf('STRIP_PIXELS'), self.conf('STRIP_GPIO_PIN'), self.conf('STRIP_HZ'), self.conf('STRIP_DMA'),
+            self.conf('STRIP_INVERT'), self.conf('STRIP_BRIGHTNESS'), self.conf('STRIP_CHANNEL'),
+            self.conf('STRIP_TYPE')
+        )
         self._loops = []
         self._strip.begin()
-        self._regions: Regions = Regions(self.count_pixels(), [46, 96, 191, 241])
-        self._tempo: Tempo = Tempo(60)
+        self._regions: Regions = Regions(self.count_pixels(), self.conf('REGIONS'))
+        self._tempo: Tempo = Tempo(self.conf('BPM_DEFAULT'))
         self._selected_program = None
 
     def count_pixels(self) -> int:
@@ -65,3 +76,6 @@ class Litsimaja(object):
 
     def set_selected_program(self, program_name: str):
         self._selected_program = program_name
+
+    def conf(self, key: str):
+        return self._config.get(key)

pyleds/run.py

@@ -5,11 +5,13 @@ import sys
 import lib.ProgramLoading as Pl
 from lib.Litsimaja import Litsimaja
 from flask import Flask, request, Response, render_template, json
-from flask_accept import accept
+
+# start litsimaja
+lm = Litsimaja()
 
 # logging
 logger = logging.getLogger('litsimaja')
-logger.setLevel(logging.DEBUG)
+logger.setLevel(logging.DEBUG if lm.conf('IS_DEV') else logging.WARN)
 formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
 file_handler = logging.FileHandler('litsimaja.log')
 file_handler.setFormatter(formatter)
@@ -18,8 +20,6 @@ stdout_handler = logging.StreamHandler(sys.stdout)
 stdout_handler.setFormatter(formatter)
 logger.addHandler(stdout_handler)
 
-# start litsimaja
-lm = Litsimaja()
 app = Flask(__name__, static_url_path='', static_folder='templates')
 Pl.run('siinus', 'Wipes', lm, logger, {'color': [0, 0, 0]})
 Pl.run('peter', 'DiskoPidu', lm, logger, {})
@@ -30,7 +30,6 @@ def lm_standard_xhr_response() -> Response:
 
 
 @app.route('/', methods=['GET'])
-@accept('text/html')
 def respond_root():
     return render_template(
         'index.html',
@@ -41,7 +40,6 @@ def respond_root():
 
 
 @app.route('/status', methods=['GET'])
-@accept('application/json')
 def respond_status():
     return lm_standard_xhr_response()
 
@@ -79,4 +77,4 @@ def sync_beat():
     return lm_standard_xhr_response()
 
 
-app.run('0.0.0.0', 8080)
+app.run(lm.conf('BIND_ADDR'), lm.conf('BIND_PORT'))