using System;
using System.IO;
using System.Threading;
using WiringPi;

namespace WiringPiBrightnessByPwmAndButtonHold
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            var ci = File.ReadAllLines("/proc/cpuinfo");
            foreach (var s in ci) Console.WriteLine(s);

            int ret = Init.WiringPiSetupGpio();
            if (ret == -1)
            {
                Console.WriteLine("Init failed: {0}", ret);
                return;
            }

            const int buttonRightPin = 17;
            const int pwmPin = 18;
            const int buttonLeftPin = 27;
            const uint maxRange = 1000u;

            GPIO.pinMode(buttonLeftPin, (int)GPIO.GPIOpinmode.Input);
            GPIO.pinMode(buttonRightPin, (int)GPIO.GPIOpinmode.Input);
            GPIO.pinMode(pwmPin, (int)GPIO.GPIOpinmode.PWMOutput);
            GPIO.pwmSetClock(2);
            GPIO.pwmSetRange(maxRange);

            var v = 50;

            while (true)
            {
                var l = GPIO.digitalRead(buttonLeftPin);
                var r = GPIO.digitalRead(buttonRightPin);

                var step = 1;
                if (v > 50 && v <= 250) step = 5;
                if (v > 250) step = 25;

                if (v > 0 && l == 1)
                {
                    if (v > 300) v -= step; else v -= step;
                    GPIO.pwmWrite(pwmPin, v);
                }

                if (v < maxRange && r == 1)
                {
                    if (v > 250) v += step; else v += step;
                    GPIO.pwmWrite(pwmPin, v);
                }

                Console.WriteLine(
                    $"{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff}"
                    + $" V={v} L={l} R={r}"
                );

                Thread.Sleep(20);
            }
        }
    }
}