"use client";

import { Suspense, useState } from "react";
import { FormSectionHeading } from "@/components/ui/FormSectionHeading";
import { LoadingOverlay } from "@/components/common/LoadingOverlay";
import FloatingFooter from "@/components/FloatingFooter";
import BankModal from "@/components/common/BankModel";
import { CashDerivativesFormFields } from "@/components/cash-derivatives/CashDerivativesFormFields";
import { useCashDerivativesForm } from "@/hooks/useCashDerivativesForm";
import { useFormState } from "@/hooks/useFormState";
import { formatDateToString } from "@/lib/common";
import { CashDerivativesFormField } from "@/components/validation/FormFields";

function CashDerivativesFormContent() {
  const {
    formData,
    derivativesValues,
    footerData,
    amountSwappedDisplay,
    loadingExisting,
    showBankModal,
    setShowBankModal,
    isEditing,
    updateFormData,
    resetForm,
    validateField,
    validateForm,
    submitForm: submitCashDerivativesForm,
    pageTitle,
    saveLabel,
    savingLabel,
  } = useCashDerivativesForm();

  const { errors, setErrors, clearError, handleFieldBlur, formRef } = useFormState<CashDerivativesFormField>();
  const [formError, setFormError] = useState<string | null>(null);

  // Form submission handler
  const handleSubmit = async (e: React.FormEvent<HTMLFormElement>) => {
    e.preventDefault();
    setFormError(null);

    const validationErrors = validateForm();
    if (Object.keys(validationErrors).length > 0) {
      setErrors(validationErrors);
      return;
    }

    setErrors({});

    const result = await submitCashDerivativesForm();
    
    if (!result.success) {
      setFormError(result.message);
    }
  };

  // Handle save button click
  const handleSave = () => {
    if (!loadingExisting) {
      formRef.current?.requestSubmit();
    }
  };

  return (
    <>
      <LoadingOverlay isLoading={loadingExisting} message="Loading swap data..." />
      <div className="container mx-auto mt-6">
        <div className="bg-white rounded-lg shadow-md border-0">
          <FormSectionHeading
            title={pageTitle}
            eyebrow="Key Details"
            showBackButton
            icon={<i className="bx bx-line-chart" aria-hidden="true" />}
            breadcrumbs={[
              { label: "Home", href: "/" },
              { label: "Swaps", href: "/bondfunds" },
              { label: pageTitle },
            ]}
          />

          <div className="p-6 md:p-8 bg-slate-50/60">
            {formError && (
              <div className="mb-4 p-3 bg-red-50 border border-red-200 rounded-md text-red-700 text-sm">
                {formError}
              </div>
            )}
            <form ref={formRef} onSubmit={handleSubmit} method="post">
              <CashDerivativesFormFields
                formData={formData}
                errors={errors}
                clearError={(field: string) => clearError(field as CashDerivativesFormField)}
                handleFieldBlur={handleFieldBlur}
                validateField={validateField}
                updateFormData={updateFormData}
                formatDateToString={formatDateToString}
                setShowBankModal={setShowBankModal}
                amountSwappedDisplay={amountSwappedDisplay}
              />
              <div className="pb-10" />
            </form>
          </div>
        </div>
      </div>
      {showBankModal && (
        <BankModal isOpen={showBankModal} onClose={() => setShowBankModal(false)} />
      )}
      <FloatingFooter
        data={footerData}
        onSave={handleSave}
        isSaving={loadingExisting}
        saveLabel={saveLabel}
        savingLabel={savingLabel}
      />
    </>
  );
}

export default function CashDerivativesForm() {
  return (
    <Suspense fallback={<div className="p-6 text-center text-sm text-slate-500">Loading form…</div>}>
      <CashDerivativesFormContent />
    </Suspense>
  );
}