import { useState, useEffect } from "react";
import { Link } from "react-router-dom";
import Layout from "@/components/Layout";
import LoadingScreen from "@/components/LoadingScreen";
import { SkeletonOnboardingStep } from "@/components/Skeleton";
import UserTypeSelection from "@/components/onboarding/UserTypeSelection";
import PersonalInfo from "@/components/onboarding/PersonalInfo";
import Experience from "@/components/onboarding/Experience";
import Interests from "@/components/onboarding/Interests";
import Welcome from "@/components/onboarding/Welcome";

export type UserType = "game-developer" | "client" | "member" | "customer";

export interface OnboardingData {
  userType: UserType | null;
  personalInfo: {
    firstName: string;
    lastName: string;
    email: string;
    company?: string;
  };
  experience: {
    level: string;
    skills: string[];
    previousProjects?: string;
  };
  interests: {
    primaryGoals: string[];
    preferredServices: string[];
  };
}

const initialData: OnboardingData = {
  userType: null,
  personalInfo: {
    firstName: "",
    lastName: "",
    email: "",
    company: "",
  },
  experience: {
    level: "",
    skills: [],
    previousProjects: "",
  },
  interests: {
    primaryGoals: [],
    preferredServices: [],
  },
};

export default function Onboarding() {
  const [currentStep, setCurrentStep] = useState(0);
  const [data, setData] = useState<OnboardingData>(initialData);
  const [isLoading, setIsLoading] = useState(true);
  const [isTransitioning, setIsTransitioning] = useState(false);

  const steps = [
    { title: "Choose Your Path", component: UserTypeSelection },
    { title: "Personal Information", component: PersonalInfo },
    { title: "Experience Level", component: Experience },
    { title: "Interests & Goals", component: Interests },
    { title: "Welcome to AeThex", component: Welcome },
  ];

  useEffect(() => {
    const timer = setTimeout(() => {
      setIsLoading(false);
    }, 1200);

    return () => clearTimeout(timer);
  }, []);

  const updateData = (newData: Partial<OnboardingData>) => {
    setData((prev) => ({ ...prev, ...newData }));
  };

  const nextStep = () => {
    if (currentStep < steps.length - 1) {
      setIsTransitioning(true);
      setTimeout(() => {
        setCurrentStep((prev) => prev + 1);
        setIsTransitioning(false);
      }, 300);
    }
  };

  const prevStep = () => {
    if (currentStep > 0) {
      setIsTransitioning(true);
      setTimeout(() => {
        setCurrentStep((prev) => prev - 1);
        setIsTransitioning(false);
      }, 300);
    }
  };

  const CurrentStepComponent = steps[currentStep].component;

  if (isLoading) {
    return (
      <LoadingScreen
        message="Preparing your onboarding experience..."
        showProgress={true}
        duration={1200}
      />
    );
  }

  return (
    <Layout>
      <div className="min-h-screen bg-aethex-gradient py-12">
        <div className="container mx-auto px-4 max-w-4xl">
          {/* Progress Bar */}
          <div className="mb-8 animate-slide-down">
            <div className="flex items-center justify-between mb-4">
              <h1 className="text-2xl font-bold text-gradient animate-pulse-glow">
                Join AeThex
              </h1>
              <div className="flex items-center gap-4">
                <span className="text-sm text-muted-foreground animate-fade-in">
                  Step {currentStep + 1} of {steps.length}
                </span>
                <div className="text-sm text-muted-foreground">
                  Already have an account?{" "}
                  <Link
                    to="/login"
                    className="text-aethex-400 hover:text-aethex-300 underline transition-colors"
                  >
                    Sign In
                  </Link>
                </div>
              </div>
            </div>
            <div className="w-full bg-muted rounded-full h-2 overflow-hidden">
              <div
                className="bg-gradient-to-r from-aethex-500 to-neon-blue h-2 rounded-full transition-all duration-700 ease-out glow-blue"
                style={{
                  width: `${((currentStep + 1) / steps.length) * 100}%`,
                }}
              />
            </div>
            {/* Step Indicators */}
            <div className="flex justify-between mt-2">
              {steps.map((_, index) => (
                <div
                  key={index}
                  className={`w-2 h-2 rounded-full transition-all duration-300 ${
                    index <= currentStep
                      ? "bg-aethex-400 glow-blue animate-pulse"
                      : "bg-muted"
                  }`}
                />
              ))}
            </div>
          </div>

          {/* Step Content */}
          <div className="bg-card/50 backdrop-blur-sm border border-border/50 rounded-xl p-8 shadow-2xl hover:shadow-3xl transition-all duration-500 animate-scale-in">
            <div className="mb-6">
              <h2 className="text-xl font-semibold text-foreground mb-2 animate-slide-right">
                {steps[currentStep].title}
              </h2>
            </div>

            {isTransitioning ? (
              <SkeletonOnboardingStep />
            ) : (
              <div className="animate-fade-in">
                <CurrentStepComponent
                  data={data}
                  updateData={updateData}
                  nextStep={nextStep}
                  prevStep={prevStep}
                  currentStep={currentStep}
                  totalSteps={steps.length}
                />
              </div>
            )}
          </div>

          {/* Floating particles effect */}
          <div className="absolute inset-0 pointer-events-none overflow-hidden opacity-10">
            {[...Array(15)].map((_, i) => (
              <div
                key={i}
                className="absolute w-1 h-1 bg-aethex-400 rounded-full animate-float"
                style={{
                  left: `${Math.random() * 100}%`,
                  top: `${Math.random() * 100}%`,
                  animationDelay: `${Math.random() * 3}s`,
                  animationDuration: `${3 + Math.random() * 2}s`,
                }}
              />
            ))}
          </div>
        </div>
      </div>
    </Layout>
  );
}