import { useEffect, useState } from "react";
import { FaMicrochip, FaCode, FaNetworkWired, FaAtom } from "react-icons/fa";

export const AppLoader = () => {
  const [progress, setProgress] = useState(0);
  const [phase, setPhase] = useState(0);

  useEffect(() => {
    const phases = [
      { progress: 25, delay: 400 },
      { progress: 50, delay: 300 },
      { progress: 75, delay: 400 },
      { progress: 100, delay: 300 },
    ];

    let timeouts: NodeJS.Timeout[] = [];
    let currentDelay = 0;

    phases.forEach((p, i) => {
      currentDelay += p.delay;
      timeouts.push(
        setTimeout(() => {
          setProgress(p.progress);
          setPhase(i);
        }, currentDelay),
      );
    });

    return () => timeouts.forEach(clearTimeout);
  }, []);

  return (
    <div
      style={{
        position: "fixed",
        top: 0,
        left: 0,
        right: 0,
        bottom: 0,
        backgroundColor: "#0a0a0f",
        display: "flex",
        flexDirection: "column",
        alignItems: "center",
        justifyContent: "center",
        zIndex: 9999,
        overflow: "hidden",
      }}
    >
      {/* Background grid effect */}
      <div
        style={{
          position: "absolute",
          top: 0,
          left: 0,
          right: 0,
          bottom: 0,
          backgroundImage: `
            linear-gradient(rgba(59, 130, 246, 0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(59, 130, 246, 0.05) 1px, transparent 1px)
          `,
          backgroundSize: "40px 40px",
          animation: "gridMove 20s linear infinite",
        }}
      />

      {/* Glowing orbs */}
      <div
        style={{
          position: "absolute",
          width: "300px",
          height: "300px",
          borderRadius: "50%",
          background:
            "radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 70%)",
          filter: "blur(40px)",
          animation: "orbFloat 6s ease-in-out infinite",
          top: "20%",
          left: "30%",
        }}
      />
      <div
        style={{
          position: "absolute",
          width: "250px",
          height: "250px",
          borderRadius: "50%",
          background:
            "radial-gradient(circle, rgba(139,92,246,0.12) 0%, transparent 70%)",
          filter: "blur(40px)",
          animation: "orbFloat 8s ease-in-out infinite reverse",
          bottom: "20%",
          right: "30%",
        }}
      />

      {/* Main content */}
      <div style={{ position: "relative", zIndex: 1, textAlign: "center" }}>
        {/* Logo with animation */}
        <div
          style={{
            display: "flex",
            alignItems: "center",
            justifyContent: "center",
            gap: "16px",
            marginBottom: "40px",
          }}
        >
          <div
            style={{
              animation: "logoSpin 3s ease-in-out infinite",
            }}
          >
            <FaAtom size={48} style={{ color: "#3b82f6" }} />
          </div>
          <h1
            style={{
              fontSize: "42px",
              fontWeight: 800,
              background:
                "linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%)",
              WebkitBackgroundClip: "text",
              WebkitTextFillColor: "transparent",
              letterSpacing: "4px",
              animation: "titleGlow 2s ease-in-out infinite",
            }}
          >
            HellreigN
          </h1>
        </div>

        {/* Loading icons animation */}
        <div
          style={{
            display: "flex",
            alignItems: "center",
            justifyContent: "center",
            gap: "24px",
            marginBottom: "40px",
          }}
        >
          {[
            { icon: FaMicrochip, delay: "0s" },
            { icon: FaNetworkWired, delay: "0.2s" },
            { icon: FaCode, delay: "0.4s" },
          ].map(({ icon: Icon, delay }, i) => (
            <div
              key={i}
              style={{
                width: "50px",
                height: "50px",
                borderRadius: "12px",
                border: `2px solid ${
                  phase >= i
                    ? "rgba(59, 130, 246, 0.6)"
                    : "rgba(255,255,255,0.1)"
                }`,
                display: "flex",
                alignItems: "center",
                justifyContent: "center",
                backgroundColor:
                  phase >= i ? "rgba(59, 130, 246, 0.1)" : "transparent",
                animation: `iconPop 0.5s ease-out ${delay} both`,
                transition: "all 0.3s ease",
              }}
            >
              <Icon
                size={22}
                style={{
                  color: phase >= i ? "#3b82f6" : "#555",
                  transition: "color 0.3s ease",
                }}
              />
            </div>
          ))}
        </div>

        {/* Progress bar */}
        <div
          style={{
            width: "320px",
            height: "4px",
            backgroundColor: "rgba(255,255,255,0.1)",
            borderRadius: "2px",
            overflow: "hidden",
            marginBottom: "16px",
          }}
        >
          <div
            style={{
              height: "100%",
              width: `${progress}%`,
              background:
                "linear-gradient(90deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%)",
              borderRadius: "2px",
              transition: "width 0.4s ease",
              boxShadow: "0 0 20px rgba(59, 130, 246, 0.5)",
            }}
          />
        </div>

        {/* Status text */}
        <div
          style={{
            fontSize: "13px",
            color: "rgba(255,255,255,0.5)",
            fontFamily: "monospace",
            letterSpacing: "2px",
          }}
        >
          {phase === 0 && "INITIALIZING CORE..."}
          {phase === 1 && "LOADING AGENTS..."}
          {phase === 2 && "ESTABLISHING CONNECTIONS..."}
          {phase === 3 && "READY"}
        </div>
      </div>

      {/* CSS Animations */}
      <style>{`
        @keyframes gridMove {
          0% { transform: translate(0, 0); }
          100% { transform: translate(40px, 40px); }
        }

        @keyframes orbFloat {
          0%, 100% { transform: translate(0, 0) scale(1); }
          50% { transform: translate(30px, -30px) scale(1.1); }
        }

        @keyframes logoSpin {
          0%, 100% { transform: rotate(0deg) scale(1); }
          25% { transform: rotate(-10deg) scale(1.05); }
          75% { transform: rotate(10deg) scale(1.05); }
        }

        @keyframes titleGlow {
          0%, 100% { filter: brightness(1); }
          50% { filter: brightness(1.3); }
        }

        @keyframes iconPop {
          0% { transform: scale(0.5) translateY(10px); opacity: 0; }
          100% { transform: scale(1) translateY(0); opacity: 1; }
        }
      `}</style>
    </div>
  );
};