import { useState } from 'react';
import { useForm } from 'react-hook-form';
import { zodResolver } from '@hookform/resolvers/zod';
import { z } from 'zod';
import { useOnboarding } from '@/hooks/useDashboard';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
import { useNavigate } from '@tanstack/react-router';

const onboardingSchema = z.object({
  businessName: z.string().min(2, 'Business name must be at least 2 characters'),
  industry: z.string().min(2, 'Industry is required'),
  website: z.string().url().optional().or(z.literal('')),
});

type OnboardingFormData = z.infer<typeof onboardingSchema>;

export function OnboardingPage() {
  const [step, setStep] = useState(1);
  const [selectedGoals, setSelectedGoals] = useState<string[]>([]);
  const [selectedServices, setSelectedServices] = useState<string[]>([]);
  const navigate = useNavigate();
  const { mutate: submitOnboarding, isPending } = useOnboarding();

  const {
    register,
    handleSubmit,
    formState: { errors },
  } = useForm<OnboardingFormData>({
    resolver: zodResolver(onboardingSchema),
  });

  const goals = [
    'Increase website traffic',
    'Improve SEO ranking',
    'Generate more leads',
    'Manage online reputation',
    'Grow social media presence',
    'Streamline bookings',
  ];

  const services = [
    'Website Creation',
    'SEO Tracking',
    'Online Booking',
    'Social Media Content',
    'Review Management',
    'Customer Feedback',
  ];

  const toggleSelection = (item: string, list: string[], setter: (val: string[]) => void) => {
    if (list.includes(item)) {
      setter(list.filter((i) => i !== item));
    } else {
      setter([...list, item]);
    }
  };

  const onSubmit = (data: OnboardingFormData) => {
    submitOnboarding(
      {
        ...data,
        goals: selectedGoals,
        services: selectedServices,
      },
      {
        onSuccess: () => {
          navigate({ to: '/dashboard' });
        },
      }
    );
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-background p-4">
      <Card className="w-full max-w-2xl">
        <CardHeader>
          <CardTitle>Welcome to Nitrokite! 🚀</CardTitle>
          <CardDescription>
            Let's get your business set up in just a few steps
          </CardDescription>
          <div className="mt-4 flex gap-2">
            {[1, 2, 3].map((s) => (
              <div
                key={s}
                className={`h-2 flex-1 rounded-full ${
                  s <= step ? 'bg-primary' : 'bg-muted'
                }`}
              />
            ))}
          </div>
        </CardHeader>
        <CardContent>
          {step === 1 && (
            <form onSubmit={handleSubmit(() => setStep(2))} className="space-y-4">
              <div>
                <Label htmlFor="businessName">Business Name</Label>
                <Input
                  id="businessName"
                  {...register('businessName')}
                  placeholder="Enter your business name"
                />
                {errors.businessName && (
                  <p className="text-sm text-destructive mt-1">
                    {errors.businessName.message}
                  </p>
                )}
              </div>
              <div>
                <Label htmlFor="industry">Industry</Label>
                <Input
                  id="industry"
                  {...register('industry')}
                  placeholder="e.g., Restaurant, Retail, Services"
                />
                {errors.industry && (
                  <p className="text-sm text-destructive mt-1">
                    {errors.industry.message}
                  </p>
                )}
              </div>
              <div>
                <Label htmlFor="website">Website (optional)</Label>
                <Input
                  id="website"
                  {...register('website')}
                  placeholder="https://yourbusiness.com"
                />
                {errors.website && (
                  <p className="text-sm text-destructive mt-1">
                    {errors.website.message}
                  </p>
                )}
              </div>
              <Button type="submit" className="w-full">
                Continue
              </Button>
            </form>
          )}

          {step === 2 && (
            <div className="space-y-4">
              <div>
                <h3 className="text-lg font-semibold mb-3">What are your goals?</h3>
                <div className="grid grid-cols-2 gap-2">
                  {goals.map((goal) => (
                    <button
                      key={goal}
                      type="button"
                      onClick={() => toggleSelection(goal, selectedGoals, setSelectedGoals)}
                      className={`p-3 rounded-lg border text-sm text-left transition-colors ${
                        selectedGoals.includes(goal)
                          ? 'bg-primary text-primary-foreground border-primary'
                          : 'hover:bg-accent'
                      }`}
                    >
                      {goal}
                    </button>
                  ))}
                </div>
              </div>
              <div className="flex gap-2">
                <Button variant="outline" onClick={() => setStep(1)} className="flex-1">
                  Back
                </Button>
                <Button onClick={() => setStep(3)} className="flex-1">
                  Continue
                </Button>
              </div>
            </div>
          )}

          {step === 3 && (
            <div className="space-y-4">
              <div>
                <h3 className="text-lg font-semibold mb-3">
                  Which services are you interested in?
                </h3>
                <div className="grid grid-cols-2 gap-2">
                  {services.map((service) => (
                    <button
                      key={service}
                      type="button"
                      onClick={() =>
                        toggleSelection(service, selectedServices, setSelectedServices)
                      }
                      className={`p-3 rounded-lg border text-sm text-left transition-colors ${
                        selectedServices.includes(service)
                          ? 'bg-primary text-primary-foreground border-primary'
                          : 'hover:bg-accent'
                      }`}
                    >
                      {service}
                    </button>
                  ))}
                </div>
              </div>
              <div className="flex gap-2">
                <Button variant="outline" onClick={() => setStep(2)} className="flex-1">
                  Back
                </Button>
                <Button
                  onClick={handleSubmit(onSubmit)}
                  disabled={isPending}
                  className="flex-1"
                >
                  {isPending ? 'Setting up...' : 'Complete Setup'}
                </Button>
              </div>
            </div>
          )}
        </CardContent>
      </Card>
    </div>
  );
}