matrix-clock/src/main.py

import asyncio
from typing import Optional

import requests
from fastapi import FastAPI, HTTPException
from fastapi.middleware.cors import CORSMiddleware

from actions import dht22_sensor, display_time, log_temperature, matrix_display
from config import climate_log_file
from handler.action_queue import ActionQueue
from handler.history import get_recent_entries

queue = ActionQueue()
queue.set_idle_action(display_time)

app = FastAPI()

origins = [
    "http://localhost",
    "http://localhost:8000",
    "http://raspberrypi",
    "http://192.168.178.84:8000",
    "http://192.168.178.84",
]

app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

asyncio.create_task(log_temperature())


@app.post("/time")
async def start_time_loop():
    await queue.set_idle_action(display_time)
    return {"message": "Time loop started"}


@app.post("/full")
async def turn_full():
    await queue.set_idle_action(matrix_display.turn_full)
    return {"message": "Full screen turned on"}


@app.post("/off")
async def turn_off():
    await queue.set_idle_action(matrix_display.turn_off)
    return {"message": "Display turned off"}


@app.post("/temperature")
async def temperature():
    measurements = dht22_sensor.get_last_read()
    if measurements is None:
        return {"message": "Failed to read temperature"}

    await queue.add_action_to_queue(
        matrix_display.show_text, "{0:0.1f}*C".format(measurements["temperature"])
    )

    return measurements


@app.post("/humidity")
async def humidity():
    measurements = dht22_sensor.get_last_read()
    if measurements is None:
        return {"message": "Failed to read humidity"}

    await queue.add_action_to_queue(
        matrix_display.show_text, "{0:0.1f}%".format(measurements["humidity"])
    )

    return measurements


@app.post("/history")
async def history():
    day_entry_count = 24 * 60
    return get_recent_entries(climate_log_file, day_entry_count)


@app.post("/flash")
async def flash(count: int = 1):
    await queue.add_action_to_queue(matrix_display.flash, count)

    return {"message": "Display flashed"}


@app.post("/contrast")
async def contrast(contrast: Optional[int] = None):
    if contrast:
        matrix_display.set_contrast(contrast)

    return {"contrast": matrix_display.contrast}


@app.post("/message")
async def display_message(body: dict):
    message_text = body.get("message")
    await queue.add_action_to_queue(matrix_display.show_text, message_text)
    return {"message": "Message displayed"}