import { useState, useEffect, useCallback } from 'react';
import Messages from './Messages.jsx';
import './Form.css';

function Form() {
  const [firstRender, setFirstRender] = useState(true);
  const [payerName, setPayerName] = useState('');
  const [payerINN, setPayerINN] = useState('');
  const [payerPhoneEmail, setPayerPhoneEmail] = useState('');
  const [payerAddress, setPayerAddress] = useState('');
  const [clientId, setClientId] = useState('');
  const [payerBankAccount, setPayerBankAccount] = useState('');
  const [amount, setAmount] = useState('0-00');
  const [payerAccounts, setPayerAccounts] = useState([]);
  const [payerAccount, setPayerAccount] = useState('');
  const [chargesDetails, setChargesDetails] = useState('OUR');
  const [bnfAccount, setBNFAccount] = useState('');
  const [bnfBankBic, setBNFBankBic] = useState('');
  const [bnfINN, setBNFINN] = useState('');
  const [bnfKPP, setBNFKPP] = useState('');
  const [bnfName, setBNFName] = useState('');
  const [bnfBankName, setBNFBankName] = useState('');
  const [bnfBankAccounts, setBNFBankAccounts] = useState([
    'Выберите значение...',
  ]);
  const [bnfBankAccount, setBNFBankAccount] = useState('Выберите значение...');
  const [paymentDetails, setPaymentDetails] = useState('');
  const [codePurpose, setCodePurpose] = useState('1');
  const [taxUINCode, setTaxUINCode] = useState('');

  const [messages, setMessages] = useState([]);

  const fields = [
    {
      name: 'payer_name',
      value: payerName,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'client_id',
      value: clientId,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'payer_inn',
      value: payerINN,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'payer_phone_email',
      value: payerPhoneEmail,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'payer_address',
      value: payerAddress,
      status: 'OK',
      message: '',
      values: [],
    },
    { name: 'amount', value: amount, status: 'OK', message: '', values: [] },
    {
      name: 'payer_account',
      value: payerAccount?.split('|')[0],
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'details_of_charges',
      value: chargesDetails,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'bnf_account',
      value: bnfAccount,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'bnf_bank_bic',
      value: bnfBankBic,
      status: 'OK',
      message: '',
      values: [],
    },
    { name: 'bnf_inn', value: bnfINN, status: 'OK', message: '', values: [] },
    { name: 'bnf_kpp', value: bnfKPP, status: 'OK', message: '', values: [] },
    { name: 'bnf_name', value: bnfName, status: 'OK', message: '', values: [] },
    {
      name: 'bnf_bank_name',
      value: bnfBankName,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'bnf_bank_account',
      value: bnfBankAccount,
      status: 'OK',
      message: '',
      values: bnfBankAccounts,
    },
    {
      name: 'payment_details',
      value: paymentDetails,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'code_purpose',
      value: codePurpose,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'tax_uin_code',
      value: taxUINCode,
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'form_type',
      value: 'EXT-RUB',
      status: 'OK',
      message: '',
      values: [],
    },
    {
      name: 'payment_type',
      values: [],
      value: 'regular_payment',
      status: 'OK',
      message: null,
    },
  ];

  const handlePressEnter = (e, field = null) => {
    if (e.key === 'Enter') {
      handleBlur(field);
    }
  };

  const focusField = (fieldName) => {
    document.getElementById(fieldName).focus();
  };

  const getBorderColor = (fieldName) => {
    try {
      switch (messages[fieldName].status) {
        case 'ERROR':
          return 'red';
        case 'WARNING':
          return 'orange';
        default:
          return 'black';
      }
    } catch {
      return 'black';
    }
  };

  const handleBlur = (field) => {
    setFirstRender(false);
    (async () => {
      const data = await requestPMTValidationAsyncAwait(fields, 'validate');
      setMessages(
        data.fields?.reduce((acc, item) => {
          acc[item.name] = { status: item.status, message: item.message };
          return acc;
        }, {})
      );
    })();
    if (['bnf_account', 'bnf_bank_bic', 'bnf_inn'].includes(field)) {
      (async () => {
        const data = await requestPMTValidationAsyncAwait(
          fields,
          'doActionForField',
          field
        );
        setBNFBankName(data.fields[13].value);
        setBNFBankAccounts(data.fields[14].values);
        setBNFBankAccount(data.fields[14].values[0]);
      })();
    }
  };

  const requestPMTValidationAsyncAwait = async (
    fields,
    action,
    currentField = null
  ) => {
    const response = await fetch('/pmtvalidation/validate/', {
      method: 'POST',
      headers: {
        Accept: 'application/json',
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        fields: fields,
        action: action,
        currentField: currentField,
      }),
    });
    const data = await response.json();
    console.log(data);
    return data;
  };

  useEffect(() => {
    if (firstRender) {
      setFirstRender(false);
      return;
    }
    handleBlur();
  }, [firstRender, bnfBankAccount, payerAccount]);

  useEffect(() => {
    const URLParams = new URLSearchParams(window.location.search);
    const cnum = URLParams.get('cnum');
    const ftype = URLParams.get('type');

    (async () => {
      const data = await requestPMTValidationAsyncAwait(
        [
          { name: 'payer_account' },
          { name: 'client_id', value: cnum },
          { name: 'form_type', value: ftype },
        ],
        'getClientInfo'
      );
      setPayerName(data.fields[3].value);
      setPayerINN(data.fields[4].value);
      setPayerPhoneEmail(data.fields[6].value);
      setPayerAddress(data.fields[7].value);
      setClientId(data.fields[1].value);
      setPayerBankAccount(data.fields[12].value);
      setPayerAccounts(data.accounts);
      setPayerAccount(data.accounts[0]?.cbAccountNumber);
    })();
  }, []);

  return (
    <div className="payment_container">
      <div
        className="payment_form"
        style={{
          width:
            Object.keys(messages)?.filter(
              (item) => messages[item]?.status != 'OK'
            ).length > 0
              ? '75%'
              : '100%',
        }}
      >
        <div className="payment">
          <div className="title_wrapper">
            <div className="title">
              Рублевый перевод на счета других клиентов или в другие банки,
              включая налоговые платежи
            </div>
            <div className="title">№2 от 03.07.2024</div>
          </div>
          <div className="section_wrapper">
            <div className="section_header">Плательщик</div>
            <div className="section_line"></div>
          </div>
          <div className="payer">
            <div className="child label">Плательщик:</div>
            <div className="child">{`${payerName} ${clientId}`}</div>
            <div className="child label">Номер счета:</div>
            <div className="child">
              <select
                value={payerAccount}
                style={{ width: '40ch' }}
                onChange={(e) => {
                  setPayerAccount(e.target.value);
                  handleBlur();
                }}
              >
                {payerAccounts.map((item, ind) => (
                  <option key={`cbAccountNumber_${ind}`}>
                    {item.description
                      ? `${item.cbAccountNumber}|${item.description}`
                      : item.cbAccountNumber}
                  </option>
                ))}
              </select>
            </div>
            <div className="child label">ИНН:</div>
            <div className="child">{payerINN}</div>
            <div className="child label">Сумма:</div>
            <div className="child">
              <span>
                <input
                  id="amount"
                  value={amount}
                  onChange={(e) => setAmount(e.target.value)}
                  onKeyDown={(e) => handlePressEnter(e)}
                  onBlur={handleBlur}
                  style={{ borderColor: getBorderColor('amount') }}
                />
                RUB
              </span>
            </div>
            <div className="child label">Телефон или электронный адрес:</div>
            <div className="child">{payerPhoneEmail}</div>
            <div className="child"></div>
            <div className="child"></div>
            <div className="child label">Адрес места жительства:</div>
            <div className="child">{payerAddress}</div>
            <div className="child label">Комиссии и расходы:</div>
            <div className="child">
              <select
                value={chargesDetails}
                onChange={(e) => {
                  setChargesDetails(e.target.value);
                  handleBlur();
                }}
              >
                <option>BEN</option>
                <option>OUR</option>
                <option>SHA</option>
              </select>
            </div>
          </div>
          <div className="section_wrapper_1">
            <div className="section_header">Получатель</div>
            <div className="section_line"></div>
          </div>
          <div className="receiver_1">
            <div className="child"></div>
            <div className="child"></div>
            <div className="child label">БИК:</div>
            <div className="child">
              <input
                id="bnf_bank_bic"
                value={bnfBankBic}
                onChange={(e) => setBNFBankBic(e.target.value)}
                onBlur={(e) => handleBlur('bnf_bank_bic')}
                onKeyDown={(e) => handlePressEnter(e, 'bnf_bank_bic')}
                style={{
                  maxWidth: '32ch',
                  borderColor: getBorderColor('bnf_bank_bic'),
                }}
              />
            </div>
            <div className="child label">№ Корр. счета:</div>
            <div className="child">
              <select
                onChange={(e) => {
                  setBNFBankAccount(e.target.value);
                }}
                value={bnfBankAccount}
                style={{ width: '28ch' }}
              >
                {bnfBankAccounts.map((item, ind) => (
                  <option key={`bnfBankAccount_${ind}`}>{item}</option>
                ))}
              </select>
            </div>
            <div className="child label">Номер счета:</div>
            <div className="child">
              <input
                id="bnf_account"
                value={bnfAccount}
                onChange={(e) => setBNFAccount(e.target.value)}
                onBlur={(e) => handleBlur('bnf_account')}
                onKeyDown={(e) => handlePressEnter(e, 'bnf_account')}
                style={{
                  maxWidth: '32ch',
                  borderColor: getBorderColor('bnf_account'),
                }}
              />
            </div>
            <div className="child label">ИНН:</div>
            <div className="child">
              <input
                id="bnf_inn"
                value={bnfINN}
                onChange={(e) => setBNFINN(e.target.value)}
                onBlur={(e) => handleBlur('bnf_inn')}
                onKeyDown={(e) => handlePressEnter(e, 'bnf_inn')}
                style={{
                  maxWidth: '32ch',
                  borderColor: getBorderColor('bnf_inn'),
                }}
              />
            </div>
            <div className="child label">КПП (103):</div>
            <div className="child">
              <input
                id="bnf_kpp"
                value={bnfKPP}
                onChange={(e) => setBNFKPP(e.target.value)}
                onBlur={handleBlur}
                onKeyDown={(e) => handlePressEnter(e)}
                style={{
                  maxWidth: '32ch',
                  borderColor: getBorderColor('bnf_kpp'),
                }}
              />
            </div>
          </div>
          <div className="receiver_2">
            <div className="child label">Наименование:</div>
            <div className="child">
              <input
                id="bnf_name"
                value={bnfName}
                onChange={(e) => setBNFName(e.target.value)}
                onBlur={handleBlur}
                onKeyDown={(e) => handlePressEnter(e)}
                style={{
                  width: '91%',
                  borderColor: getBorderColor('bnf_name'),
                }}
              />
            </div>
            <div className="child label">Банк получателя:</div>
            <div className="child">{bnfBankName}</div>
            <div className="child label">Назначение платежа:</div>
            <div className="child">
              <textarea
                id="payment_details"
                value={paymentDetails}
                onChange={(e) => setPaymentDetails(e.target.value)}
                onBlur={handleBlur}
                onKeyDown={(e) => handlePressEnter(e)}
                style={{
                  height: '60px',
                  borderColor: getBorderColor('payment_details'),
                }}
              />
            </div>
            <div className="child label">Код вида дохода:</div>
            <div className="child">
              <select
                style={{ width: '60ch' }}
                value={codePurpose}
                onChange={(e) => {
                  setCodePurpose(e.target.value);
                  handleBlur();
                }}
              >
                <option>1 - напр., заработная плата</option>
                <option>2 - алименты (периодические выплаты)</option>
                <option>
                  3 - возмещение вреда здоровью (периодические выплаты)
                </option>
                <option>
                  4 - мат. помощь на рождение ребенка (единовременная выплата)
                </option>
                <option>
                  5 - возмещение вреда здоровью (единовременная выплата)
                </option>
              </select>
            </div>
            <div className="child label">Код (УИП) (22):</div>
            <div className="child">
              <input
                value={taxUINCode}
                onChange={(e) => setTaxUINCode(e.target.value)}
                onBlur={handleBlur}
                onKeyDown={(e) => handlePressEnter(e)}
                style={{ maxWidth: '32ch' }}
              />
            </div>
          </div>
        </div>
      </div>
      {Object.keys(messages)?.filter((item) => messages[item]?.status != 'OK')
        .length > 0 ? (
        <div className="payment_messages">
          <Messages messages={messages} focusField={focusField} />
        </div>
      ) : null}
    </div>
  );
}

export default Form;