import React, { useEffect, useState } from 'react';
import { HiBars3BottomLeft } from "react-icons/hi2";
import { FaCheck } from "react-icons/fa6";
import '../App.css';
import InvestmentForm from './YatırımForm';
import axios from 'axios';
import DateInput from './DateInput';
import InvestmentTable from './YatırımTable';

const BASE_URL = "http://localhost:8000/api";

const YatırımContent = () => {
    const [showFilterMenu, setShowFilterMenu] = useState(true);
    const [showModal, setShowModal] = useState(false);
    const [bankAccounts, setBankAccounts] = useState([]);
    const [selectedAccounts, setSelectedAccounts] = useState([]); // Changed to array
    const [loading, setLoading] = useState(false);
    const [error, setError] = useState(null);
    const [minAmount, setMinAmount] = useState('');
    const [maxAmount, setMaxAmount] = useState('');
    const [filterConfig, setFilterConfig] = useState({
        accountNumbers: [], // Changed to array
        minAmount: '',
        maxAmount: '',
        startDate: '',
        endDate: '',
        autoUpdate: true
    });

    useEffect(() => {
        fetchBankAccounts();
    }, []);

    const fetchBankAccounts = async () => {
        const token = localStorage.getItem('token');
        setLoading(true);
        try {
            const response = await axios.get(`${BASE_URL}/bank/accounts`, {
                headers: {
                    'Authorization': `Bearer ${token}`
                }
            });
            // Filter accounts that allow investments (isInvest is true)
            const investmentAccounts = response.data.data.filter(account => account.isInvest);
            setBankAccounts(investmentAccounts);
        } catch (err) {
            setError('Banka hesapları yüklenirken bir hata oluştu');
            console.error('Error fetching bank accounts:', err);
        } finally {
            setLoading(false);
        }
    };

    const handleAccountChange = (e) => {
        const selectedOptions = Array.from(e.target.selectedOptions).map(option => option.value);
        const selectedAccountsInfo = selectedOptions.map(accountId => {
            const account = bankAccounts.find(acc => acc.accountId === accountId);
            return account ? account.accountNumber : null;
        }).filter(Boolean);

        setSelectedAccounts(selectedOptions);
        setFilterConfig(prev => ({
            ...prev,
            accountNumbers: selectedAccountsInfo
        }));
    };

    const handleMinAmountChange = (e) => {
        const value = e.target.value;
        setMinAmount(value);
        setFilterConfig(prev => ({
            ...prev,
            minAmount: value
        }));
    };

    const handleMaxAmountChange = (e) => {
        const value = e.target.value;
        setMaxAmount(value);
        setFilterConfig(prev => ({
            ...prev,
            maxAmount: value
        }));
    };

    const handleDateChange = ({ startDate, endDate }) => {
        setFilterConfig(prev => ({
            ...prev,
            startDate,
            endDate
        }));
    };

    const toggleAutoUpdate = () => {
        setFilterConfig(prev => ({
            ...prev,
            autoUpdate: !prev.autoUpdate
        }));
    };

    const toggleFilterMenu = () => {
        setShowFilterMenu(prev => !prev);
    };

    return (
        <div className="w-full border-4 bg-slate-200 border-slate-200">
            <div className="flex flex-col p-5 border-4 gap-4 items-start justify-center">
                <div className="flex items-center justify-between border border-black border-r-0 border-t-0 border-l-0 pb-2 flex-wrap gap-4 w-full">
                    <button
                        onClick={() => setShowModal(true)}
                        type="button"
                        className="p-1.5 text-xs rounded-lg bg-emerald-500 text-white hover:bg-emerald-600 transition-colors"
                    >
                        Banka Yatırım Talebi Oluştur
                    </button>
                    <div className="flex flex-row items-center text-sm gap-3 justify-center">
                        <DateInput onDateChange={handleDateChange} />
                    </div>
                </div>

                {showModal && (
                    <InvestmentForm
                        show={showModal}
                        title="Yatırım Oluşturma Formu"
                        onClose={() => setShowModal(false)}
                    />
                )}

                <div
                    onClick={toggleFilterMenu}
                    className="items-center cursor-pointer gap-1 justify-center flex-row text-xs flex hover:text-emerald-600"
                >
                    <button type="button">Filtrele</button>
                    <HiBars3BottomLeft />
                </div>

                {!showFilterMenu && (
                    <div className="w-full">
                        <div className="flex items-center md:items-start flex-wrap flex-1 gap-6 justify-between">
                            <div className="flex flex-col items-start text-sm justify-center gap-3.5">
                                <h5 className="font-medium">Banka Hesapları</h5>
                                <select
                                    multiple
                                    value={selectedAccounts}
                                    onChange={handleAccountChange}
                                    className="rounded-md w-64 p-1 text-xs border border-gray-300 focus:outline-none focus:ring-2 focus:ring-emerald-500"
                                    disabled={loading}
                                    size={5}
                                >
                                    {bankAccounts.map(account => (
                                        <option
                                            key={account.accountId}
                                            value={account.accountId}
                                            className="p-1 hover:bg-emerald-50"
                                        >
                                            {account.accountName} - {account.bankName} - (TR {account.accountNumber})
                                        </option>
                                    ))}
                                </select>
                                {!loading && (
                                    <div className="flex flex-col gap-1">
                                        <span className="text-xs text-gray-600">
                                            {selectedAccounts.length === 0 ? (
                                                'Seçili hesap yok'
                                            ) : (
                                                `${selectedAccounts.length} hesap seçili`
                                            )}
                                        </span>
                                        <span className="text-xs text-gray-500">
                                            <span className="bg-gray-100 px-1 py-0.5 rounded">Ctrl/Cmd</span> tuşuna basılı tutarak birden fazla hesap seçebilirsiniz
                                        </span>
                                    </div>
                                )}
                                {error && (
                                    <span className="text-xs text-red-500">{error}</span>
                                )}
                            </div>

                            <div className="flex flex-col items-start justify-center gap-5">
                                <div className="flex flex-row items-center text-xs justify-center gap-1">
                                    <h1>Tutar Aralığı</h1>
                                    <input
                                        type="number"
                                        placeholder="0 ₺"
                                        value={minAmount}
                                        onChange={handleMinAmountChange}
                                        className="rounded-sm text-center w-28 p-1 text-xs border border-gray-300 focus:outline-none focus:ring-2 focus:ring-emerald-500"
                                    />
                                    <span>ve</span>
                                    <input
                                        type="number"
                                        placeholder="500.000 ₺"
                                        value={maxAmount}
                                        onChange={handleMaxAmountChange}
                                        className="rounded-sm w-28 text-center p-1 text-xs border border-gray-300 focus:outline-none focus:ring-2 focus:ring-emerald-500"
                                    />
                                </div>
                                <div className="flex items-center justify-center">
                                    <div 
                                        onClick={toggleAutoUpdate}
                                        className="flex flex-row items-center justify-center rounded-lg p-1 bg-emerald-600 text-white hover:bg-emerald-700 transition-colors cursor-pointer"
                                    >
                                        <FaCheck size={10} />
                                        <button
                                            type="button"
                                            className="text-xs p-1 rounded-lg"
                                        >
                                            {filterConfig.autoUpdate ? 'Otomatik Güncelleştirme Açık' : 'Otomatik Güncelleştirme Kapalı'}
                                        </button>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                )}
            </div>
            
            <InvestmentTable 
                filters={filterConfig}
                autoUpdate={filterConfig.autoUpdate}
            />
        </div>
    );
};

export default YatırımContent;