import { Button } from '@/components/ui/button';
import { Field, FieldError, FieldLabel } from '@/components/ui/field';
import { Input } from '@/components/ui/input';
import { apiClient } from '@/lib/api-client';
import { useAuth } from '@/lib/auth';
import { setCurrentComplexSlug } from '@/lib/current-complex';
import { zodResolver } from '@hookform/resolvers/zod';
import type { PlanSummary } from '@repo/api-contract';
import { useNavigate } from '@tanstack/react-router';
import { useEffect, useState } from 'react';
import { useForm } from 'react-hook-form';
import { z } from 'zod';

const createComplexSchema = z.object({
  complexName: z
    .string()
    .trim()
    .min(3, 'El nombre del complejo debe tener al menos 3 caracteres.')
    .max(120, 'El nombre del complejo no puede superar los 120 caracteres.'),
  physicalAddress: z
    .string()
    .trim()
    .min(5, 'La direccion debe tener al menos 5 caracteres.')
    .max(200, 'La direccion no puede superar los 200 caracteres.'),
  city: z.string().trim().max(100, 'La ciudad no puede superar los 100 caracteres.').optional(),
  state: z
    .string()
    .trim()
    .max(100, 'La provincia/estado no puede superar los 100 caracteres.')
    .optional(),
  country: z.string().trim().max(100, 'El país no puede superar los 100 caracteres.').optional(),
  planCode: z
    .string()
    .trim()
    .min(1, 'El planCode no puede estar vacío.')
    .max(10, 'El planCode no puede superar los 10 caracteres.')
    .optional(),
});

type CreateComplexForm = z.infer<typeof createComplexSchema>;

export function CreateComplexPage() {
  const navigate = useNavigate();
  const { user } = useAuth();
  const [plans, setPlans] = useState<PlanSummary[]>([]);
  const [errorMessage, setErrorMessage] = useState<string | null>(null);
  const [isSubmitting, setIsSubmitting] = useState(false);

  const form = useForm<CreateComplexForm>({
    resolver: zodResolver(createComplexSchema),
    mode: 'onChange',
    defaultValues: {
      complexName: '',
      physicalAddress: '',
      city: '',
      state: '',
      country: '',
      planCode: '',
    },
  });

  useEffect(() => {
    void (async () => {
      try {
        const result = await apiClient.plans.list();
        setPlans(result);
      } catch {
        setPlans([]);
      }
    })();
  }, []);

  const onSubmit = async (values: CreateComplexForm) => {
    setErrorMessage(null);
    setIsSubmitting(true);

    try {
      const pendingEmail = sessionStorage.getItem('pending-signup-email');
      const payload: Parameters<typeof apiClient.complexes.create>[0] = {
        complexName: values.complexName,
        physicalAddress: values.physicalAddress,
        city: values.city,
        state: values.state,
        country: values.country,
        planCode: values.planCode,
      };

      if (pendingEmail) {
        payload.adminEmail = pendingEmail;
      }

      const complex = await apiClient.complexes.create(payload);

      sessionStorage.removeItem('pending-signup-email');
      sessionStorage.removeItem('pending-signup-userId');
      setCurrentComplexSlug(complex.complexSlug);
      await navigate({
        to: '/complex/$slug/edit',
        params: { slug: complex.complexSlug },
      });
    } catch {
      setErrorMessage('No pudimos crear el complejo. Intenta nuevamente.');
    } finally {
      setIsSubmitting(false);
    }
  };

  return (
    <main className="flex min-h-screen w-full items-center justify-center px-6">
      <section className="w-full max-w-sm rounded-xl border bg-card p-6 text-card-foreground shadow-sm">
        <h1 className="mb-2 text-2xl font-semibold">Crear tu complejo</h1>
        <p className="mb-4 text-sm text-muted-foreground">
          Completá los datos de tu complejo para comenzar.
        </p>

        <form className="space-y-3" onSubmit={form.handleSubmit(onSubmit)}>
          {user?.email && (
            <Field>
              <FieldLabel htmlFor="user-email">Email</FieldLabel>
              <Input id="user-email" type="email" value={user.email} disabled readOnly />
            </Field>
          )}

          <Field data-invalid={Boolean(form.formState.errors.complexName)}>
            <FieldLabel htmlFor="complexName">Nombre del complejo</FieldLabel>
            <Input
              id="complexName"
              type="text"
              placeholder="Complejo Las Palmeras"
              aria-invalid={Boolean(form.formState.errors.complexName)}
              {...form.register('complexName')}
            />
            <FieldError errors={[form.formState.errors.complexName]} />
          </Field>

          <Field data-invalid={Boolean(form.formState.errors.physicalAddress)}>
            <FieldLabel htmlFor="physicalAddress">Dirección física</FieldLabel>
            <Input
              id="physicalAddress"
              type="text"
              placeholder="Av. San Martin 1234, Salta"
              aria-invalid={Boolean(form.formState.errors.physicalAddress)}
              {...form.register('physicalAddress')}
            />
            <FieldError errors={[form.formState.errors.physicalAddress]} />
          </Field>

          <Field data-invalid={Boolean(form.formState.errors.city)}>
            <FieldLabel htmlFor="city">Ciudad</FieldLabel>
            <Input
              id="city"
              type="text"
              placeholder="Salta"
              aria-invalid={Boolean(form.formState.errors.city)}
              {...form.register('city')}
            />
            <FieldError errors={[form.formState.errors.city]} />
          </Field>

          <Field data-invalid={Boolean(form.formState.errors.state)}>
            <FieldLabel htmlFor="state">Provincia/Estado</FieldLabel>
            <Input
              id="state"
              type="text"
              placeholder="Salta"
              aria-invalid={Boolean(form.formState.errors.state)}
              {...form.register('state')}
            />
            <FieldError errors={[form.formState.errors.state]} />
          </Field>

          <Field data-invalid={Boolean(form.formState.errors.country)}>
            <FieldLabel htmlFor="country">País</FieldLabel>
            <Input
              id="country"
              type="text"
              placeholder="Argentina"
              aria-invalid={Boolean(form.formState.errors.country)}
              {...form.register('country')}
            />
            <FieldError errors={[form.formState.errors.country]} />
          </Field>

          <Field data-invalid={Boolean(form.formState.errors.planCode)}>
            <FieldLabel htmlFor="planCode">Plan</FieldLabel>
            <select
              id="planCode"
              className="h-10 w-full rounded-md border bg-background px-3 text-sm"
              aria-invalid={Boolean(form.formState.errors.planCode)}
              {...form.register('planCode')}
            >
              <option value="">
                {plans.length > 0 ? 'Selecciona un plan' : 'No hay planes disponibles'}
              </option>
              {plans.map((plan) => (
                <option key={plan.code} value={plan.code}>
                  {plan.name} - ${plan.price.toFixed(2)}
                </option>
              ))}
            </select>
            {plans.length === 0 && (
              <p className="text-xs text-muted-foreground">
                Carga planes en la base para continuar.
              </p>
            )}
            <FieldError errors={[form.formState.errors.planCode]} />
          </Field>

          {errorMessage && <p className="text-sm text-destructive">{errorMessage}</p>}

          <Button
            type="submit"
            className="w-full"
            disabled={isSubmitting || !form.formState.isValid}
          >
            {isSubmitting ? 'Creando complejo...' : 'Crear complejo'}
          </Button>
        </form>
      </section>
    </main>
  );
}