# Built In Dependencies
import time
import psutil
import os

if os.name == 'nt':
    import wmi

class DiskMonitor:
    def __init__(self, hysterisis_time = 20):
        self.read_usage_history = [0]
        self.write_usage_history = [0]
        self.history_times = [0]
        self.highest_read_rate = 0.00001
        self.highest_write_rate = 0.00001
        self.max_history_size = hysterisis_time

    def get(self):
        try:
            disk_io = psutil.disk_io_counters()
            read_usage = disk_io.read_bytes
            write_usage = disk_io.write_bytes
            self.read_usage_history.append(read_usage)
            self.write_usage_history.append(write_usage)
            self.history_times.append(time.time())
            if len(self.read_usage_history) > self.max_history_size:
                self.read_usage_history = self.read_usage_history[-self.max_history_size:]
                self.write_usage_history = self.write_usage_history[-self.max_history_size:]
                self.history_times = self.history_times[-self.max_history_size:]

            read_diff = self.read_usage_history[-1] - self.read_usage_history[0]
            write_diff = self.write_usage_history[-1] - self.write_usage_history[0]
            time_diff = self.history_times[-1] - self.history_times[0]
            read_rate = read_diff / time_diff
            write_rate = write_diff / time_diff
            self.highest_read_rate = max(self.highest_read_rate, read_rate)
            self.highest_write_rate = max(self.highest_write_rate, write_rate)
            read_percent = min(1.0, read_rate / self.highest_read_rate)
            write_percent = min(1.0, write_rate / self.highest_write_rate)
            return read_percent, write_percent
        except Exception as e:
            print(f"Error in DiskMonitor.get(): {e}")
            return 0, 0

class NetworkMonitor:
    def __init__(self, hysterisis_time = 20):
        self.sent_usage_history = [0]
        self.recv_usage_history = [0]
        self.history_times = [0]
        self.highest_sent_rate = 0.00001
        self.highest_recv_rate = 0.00001
        self.max_history_size = hysterisis_time

    def get(self):
        try:
            net_io = psutil.net_io_counters()
            sent_usage = net_io.bytes_sent
            recv_usage = net_io.bytes_recv
            self.sent_usage_history.append(sent_usage)
            self.recv_usage_history.append(recv_usage)
            self.history_times.append(time.time())
            if len(self.sent_usage_history) > self.max_history_size:
                self.sent_usage_history = self.sent_usage_history[-self.max_history_size:]
                self.recv_usage_history = self.recv_usage_history[-self.max_history_size:]
                self.history_times = self.history_times[-self.max_history_size:]

            sent_diff = self.sent_usage_history[-1] - self.sent_usage_history[0]
            recv_diff = self.recv_usage_history[-1] - self.recv_usage_history[0]
            time_diff = self.history_times[-1] - self.history_times[0]
            sent_rate = sent_diff / time_diff
            recv_rate = recv_diff / time_diff
            self.highest_sent_rate = max(self.highest_sent_rate, sent_rate)
            self.highest_recv_rate = max(self.highest_recv_rate, recv_rate)
            sent_percent = min(1.0, sent_rate / self.highest_sent_rate)
            recv_percent = min(1.0, recv_rate / self.highest_recv_rate)
            return sent_percent, recv_percent
        except Exception as e:
            print(f"Error in NetworkMonitor.get(): {e}")
            return 0, 0

class CPUMonitor:
    def __init__(self, hysterisis_time = 10):
        self.cpu_count = psutil.cpu_count() // 2 # 2 logical cores per physical core
        self.cpu_usage_history = [[] for _ in range(self.cpu_count)]
        self.history_times = []
        self.max_history_size = hysterisis_time

    def get(self):
        try:
            cpu_usage = psutil.cpu_percent(percpu=True)
            for i in range(self.cpu_count):
                useage = 2 * max(cpu_usage[2*i], cpu_usage[2*i+1]) # Combine logical cores
                if useage > 100:
                    useage = 100
                self.cpu_usage_history[i].append(useage / 100.0)
            self.history_times.append(time.time())
            if len(self.cpu_usage_history[0]) > self.max_history_size:
                for i in range(self.cpu_count):
                    self.cpu_usage_history[i] = self.cpu_usage_history[i][-self.max_history_size:]
                    self.history_times = self.history_times[-self.max_history_size:]
            cpu_percentages = [sum(core_history) / self.max_history_size for core_history in self.cpu_usage_history]
            # Somehow cpu_percentages can have values greater than 1 so we clamp them
            return cpu_percentages
        except Exception as e:
            print(f"Error in CPUMonitor.get(): {e}")
            return [0] * self.cpu_count

class MemoryMonitor:
    @staticmethod
    def get():
        return psutil.virtual_memory().percent / 100.0
    

class BatteryMonitor:
    @staticmethod
    def get():
        battery = psutil.sensors_battery()
        if battery is not None:
            battery_percentage = battery.percent / 100.0
            battery_plugged = battery.power_plugged
            return battery_percentage, battery_plugged
        

def get_monitor_brightness():
    try:
        if os.name == 'nt':
            return wmi.WMI(namespace='wmi').WmiMonitorBrightness()[0].CurrentBrightness / 100.0
        else:
            return int(open('/sys/class/backlight/amdgpu_bl1/brightness', 'r').read()) / 255.0
    except Exception as e:
        return 1.0