import { useEffect, useState } from 'react';
import { Group, AppShell } from '@mantine/core';
import { usePreferencesStore } from '@/stores/preferences';
import type {
  CpuMetrics,
  MemoryMetrics,
  GpuMetrics,
} from '@/main/modules/monitoring';
import { PerformanceBadge } from './PerformanceBadge';

interface StatusBarProps {
  maxDataPoints?: number;
}

export const StatusBar = ({ maxDataPoints = 60 }: StatusBarProps) => {
  const [cpuMetrics, setCpuMetrics] = useState<CpuMetrics | null>(null);
  const [memoryMetrics, setMemoryMetrics] = useState<MemoryMetrics | null>(
    null
  );
  const [gpuMetrics, setGpuMetrics] = useState<GpuMetrics | null>(null);
  const { resolvedColorScheme: colorScheme } = usePreferencesStore();

  useEffect(() => {
    let isMounted = true;

    const handleCpuMetrics = (metrics: CpuMetrics) => {
      if (!isMounted) return;
      setCpuMetrics(metrics);
    };

    const handleMemoryMetrics = (metrics: MemoryMetrics) => {
      if (!isMounted) return;
      setMemoryMetrics(metrics);
    };

    const handleGpuMetrics = (metrics: GpuMetrics) => {
      if (!isMounted) return;
      setGpuMetrics(metrics);
    };

    const cleanupCpu =
      window.electronAPI.monitoring.onCpuMetrics(handleCpuMetrics);
    const cleanupMemory =
      window.electronAPI.monitoring.onMemoryMetrics(handleMemoryMetrics);
    const cleanupGpu =
      window.electronAPI.monitoring.onGpuMetrics(handleGpuMetrics);
    const stopMonitoring = window.electronAPI.monitoring.start();

    return () => {
      isMounted = false;
      cleanupCpu();
      cleanupMemory();
      cleanupGpu();
      stopMonitoring();
    };
  }, [maxDataPoints]);

  return (
    <AppShell.Footer
      style={{
        border: '1px solid var(--mantine-color-default-border)',
      }}
    >
      <Group
        px="xs"
        gap="xs"
        justify="flex-end"
        h="100%"
        bg={colorScheme === 'dark' ? 'dark.6' : 'gray.1'}
      >
        {cpuMetrics && memoryMetrics && (
          <>
            <PerformanceBadge
              label="CPU"
              value={`${cpuMetrics.usage}%`}
              tooltipLabel={`${cpuMetrics.usage}%`}
            />

            <PerformanceBadge
              label="RAM"
              value={`${memoryMetrics.usage}%`}
              tooltipLabel={`${memoryMetrics.used.toFixed(2)} GB / ${memoryMetrics.total.toFixed(2)} GB (${memoryMetrics.usage}%)`}
            />
          </>
        )}

        {gpuMetrics?.gpus.map((gpu, index) => (
          <Group gap="xs" key={`gpu-${index}`}>
            <PerformanceBadge
              label={`GPU${gpuMetrics.gpus.length > 1 ? ` ${index + 1}` : ''}`}
              value={`${gpu.usage}%`}
              tooltipLabel={`${gpu.usage}%`}
            />

            <PerformanceBadge
              label={`VRAM${gpuMetrics.gpus.length > 1 ? ` ${index + 1}` : ''}`}
              value={`${gpu.memoryUsage}%`}
              tooltipLabel={`${gpu.memoryUsed.toFixed(2)} GB / ${gpu.memoryTotal.toFixed(2)} GB (${gpu.memoryUsage}%)`}
            />
          </Group>
        ))}
      </Group>
    </AppShell.Footer>
  );
};