import React, { useMemo } from "react";
import { useSelector } from "react-redux";
import { GloabalFieldDetails } from "../../../Features/ThemeChange/ThemeChange";
import { dateFormatChange1 } from "../../../Services/Others";

const PrintStyleDCToInvoiceA4Standard = ({ invoiceData, preference, printDatas }) => {
    const {
        InvoiceNo,
        DCNo,
        InvoiceDate,
        CustMobile,
        GrandTotal,
        TaxAmount,
        TotalAmount,
        ProductDetails,
        AddressDetails,
        CustName,
        VehicleNo
    } = invoiceData;
    console.log(invoiceData, "invoiceData")

    const fieldDetails = useSelector(GloabalFieldDetails);
    const signature = fieldDetails?.["signature"];
    const termsAndConditions = fieldDetails?.["terms&conditions"];
    const termsAndConditionsData = printDatas?.TermsandConditions;
    const signatureImg = printDatas?.Signature;
    const notesText = printDatas?.Notes;
    const formatTheme = printDatas?.PrintType === "S";
    const pageSize = printDatas?.PageSize;
    const branch = AddressDetails[0];
    const bankDetails = branch?.BankDetails;
    console.log(branch, "branchbranch")
    const logo = branch?.CompLogo;

    const printGreeting = preference?.[0]?.SettingDtlDetails?.find(
        (i) => i.SettingIdName === 'PrintGreetings'
    );

    const chunkSize = pageSize === "A5" ? 8 : 11;

    const paginatedChunks = useMemo(() => {
        const chunks = [];
        for (let i = 0; i < ProductDetails.length; i += chunkSize) {
            chunks.push(ProductDetails.slice(i, i + chunkSize));
        }
        return chunks;
    }, [ProductDetails, chunkSize]);

    const lastChunkRows = paginatedChunks.at(-1)?.length || 0;
    const shouldFooterBeOnNewPage = lastChunkRows > (pageSize === "A5" ? 5 : 10);

    const getPageStyle = (isFinalFooterPage) => ({
        display: "flex",
        flexDirection: "column",
        justifyContent: isFinalFooterPage ? "space-between" : "",
        height: pageSize === "A5" ? "170mm" : "95vh",
        maxHeight: "97vh"
    });

    const HeaderSection = () => (
        <>
            <Header logo={logo} branch={branch} />
            <InvoiceMeta
                InvoiceNo={InvoiceNo}
                DCNo={DCNo}
                InvoiceDate={InvoiceDate}
                CustMobile={CustMobile}
                CustName={CustName}
                VehicleNo={VehicleNo}
            />
        </>
    );

    const renderFooter = () => (
        <>
            {(termsAndConditions || signature || bankDetails?.length > 0) && (<div className="termsAndSignatureAndBankDetails">
                <div className="bankDetailsAndTerms">
                    {(bankDetails?.length > 0) && <div className="bank-details-container">
                        <h4 className="bank-details-title">Bank Details:</h4>
                        <div className="bank-details">
                            <div className="bank-detail-item"><strong>Bank Name:</strong> {bankDetails?.[0]?.BankName}</div>
                            <div className="bank-detail-item"><strong>Account No.:</strong> {bankDetails?.[0]?.AccountNo}</div>
                            <div className="bank-detail-item"><strong>IFSC Code:</strong> {bankDetails?.[0]?.IFSCCode}</div>
                            <div className="bank-detail-item"><strong>Branch Name:</strong> {bankDetails?.[0]?.BankBranch}</div>
                        </div>
                        <hr />
                    </div>}
                    {termsAndConditions && termsAndConditionsData?.length > 0 && (
                        <div className="termsAndConditions">
                            <p className="termsAndConditionsHead">Terms & Conditions</p>
                            <ol className="termsAndConditionsList">
                                {termsAndConditionsData.map((item, idx) => (
                                    <li key={idx}>{item?.TermsandConditions}</li>
                                ))}
                            </ol>
                        </div>
                    )}
                </div>
                {signature && (<div className="signature-container">
                    <div>Certified that the particulars given above are true and correct.</div>
                    <div className="signature">
                        <p>Authorised Signatory</p>
                        <img src={signatureImg} alt="Authorized Signature" />
                        <p>(Common Seal)</p>
                    </div>
                </div>)}
            </div>)}
            {(notesText || printGreeting?.SettingValue === "Y") && (
                <>
                    {notesText && <p className="notesText text-center">{notesText}</p>}
                    {printGreeting?.SettingValue === "Y" && (
                        <div className="printGreeting">Thank You Visit Again</div>
                    )}
                </>
            )}
        </>
    );

    return (
        <>
            {formatTheme ? (
                paginatedChunks.map((dataChunk, chunkIndex) => {
                    const isLastPage = chunkIndex === paginatedChunks.length - 1;
                    const isFinalFooterPage = isLastPage && !shouldFooterBeOnNewPage;

                    return (
                        <div
                            key={chunkIndex}
                            className={`container print-chunk${chunkIndex > 0 ? ' print-page-break' : ''}`}
                            style={getPageStyle(isFinalFooterPage)}
                        >
                            <div>
                                {(chunkIndex === 0 || formatTheme) && <HeaderSection />}
                                <ProductTable data={dataChunk} />
                                {isLastPage && <Summary bankDetails={bankDetails} TotalAmount={TotalAmount} TaxAmount={TaxAmount} GrandTotal={GrandTotal} />}
                                {!formatTheme && isFinalFooterPage && renderFooter()}
                            </div>
                            {formatTheme && isFinalFooterPage && <div>{renderFooter()}</div>}
                        </div>
                    );
                })
            ) : (
                <div className="container">
                    <HeaderSection />
                    <ProductTable data={ProductDetails} />
                    <Summary bankDetails={bankDetails} TotalAmount={TotalAmount} TaxAmount={TaxAmount} GrandTotal={GrandTotal} />
                    {renderFooter()}
                </div>
            )}
        </>
    );
};

export default PrintStyleDCToInvoiceA4Standard;

// -------------------- COMPONENTS --------------------

const Header = ({ logo, branch }) => (
    <>
        <div className="header">
            {/* {logo && <img src={logo} alt={`${branch?.CompName} Logo`} className="logo" />} */}
            <div className="headerText">
                <div className="companyName">{branch.CompName}</div>
                <div>{branch.Address1}-{branch.City}-{branch?.Zip}</div>
                <div><strong>Phone:</strong> {branch.BrMobile}</div>
                {branch?.BrEmail && <div><strong>Email:</strong> {branch.BrEmail}</div>}
                {branch?.BrGSTIN && <div><strong>GSTIN:</strong> {branch.BrGSTIN}</div>}
            </div>
        </div>
        <hr />
        <div className="text-center"><strong>SALES INVOICE</strong></div>
        <hr />
    </>
);

const InvoiceMeta = ({ InvoiceNo, DCNo, InvoiceDate, CustMobile, VehicleNo, CustName }) => (

    <div className="invoiceMeta">
        <div className="invoice-head">Details of Receiver | Billed to</div>
        <div className="invoiceInfo">
            <div>
                <div className="text-left"><strong>Invoice No:</strong> {InvoiceNo}</div>
                <div className="text-left"><strong>Delivery No:</strong> {DCNo}</div>
            </div>
            <div>
                <div className="text-right"><strong>Date:</strong> {dateFormatChange1(InvoiceDate)}</div>
                {VehicleNo && <div className="text-right"><strong>Vehicle No:</strong> {VehicleNo}</div>}
            </div>
        </div>
        <div className="customer-section">
            {CustName && <div className="text-left"><strong>Customer Name:</strong> {CustName}</div>}
            <div className="text-left"><strong>Customer Mobile No:</strong> {CustMobile || '-'}</div>
        </div>
    </div>

);

const InvoiceAmountWords = ({ amount }) => {
    const numberToWords = (num) => {
        const a = [
            "", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten",
            "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen",
            "Eighteen", "Nineteen"
        ];
        const b = ["", "", "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety"];

        if (num === 0) return "Zero";

        if (num < 20) return a[num];
        if (num < 100) return b[Math.floor(num / 10)] + (num % 10 ? " " + a[num % 10] : "");
        if (num < 1000)
            return a[Math.floor(num / 100)] + " Hundred" + (num % 100 ? " and " + numberToWords(num % 100) : "");
        if (num < 100000)
            return numberToWords(Math.floor(num / 1000)) + " Thousand" + (num % 1000 ? " " + numberToWords(num % 1000) : "");

        return "Number too large";
    };
    return (
        <div className="amount-in-words">
            <p>
                Total Invoice Amount in Words:
            </p>
            <p>
                {numberToWords(amount)}
            </p>
        </div>
    );
};

const ProductTable = ({ data }) => {
    const columns = [
        { label: "S.No", key: "sno", width: "5%" },
        { label: "Product", key: "ProdName", width: "20%" },
        { label: "Variant", key: "ProdVariantName", width: "20%" },
        { label: "Qty", key: "Qty", width: "10%" },
        { label: "Rate", key: "ProductRate", width: "10%" },
        { label: "Tax", key: "TaxAmount", width: "10%" },
        { label: "Total", key: "TotalAmount", width: "15%" }
    ];

    return (
        <table className="productTable">
            <thead>
                <tr>
                    {columns.map(col => (
                        <th key={col.key} style={{ width: col.width }} scope="col">{col.label}</th>
                    ))}
                </tr>
            </thead>
            <tbody>
                {data.map((prod, index) => (
                    <tr key={prod.UniqueId}>
                        <td>{index + 1}</td>
                        <td>{prod.ProdName}</td>
                        <td>{prod.ProdVariantName}</td>
                        <td>{prod.Qty}</td>
                        <td>{prod.ProductRate}</td>
                        <td>{prod.TaxAmount}</td>
                        <td>{prod.TotalAmount}</td>
                    </tr>
                ))}
            </tbody>
        </table>
    );
};

const Summary = ({ bankDetails, TotalAmount, TaxAmount, GrandTotal }) => (
    <>
        <div className="summary">
            <div><strong>Subtotal:</strong> ₹ {TotalAmount.toFixed(2)}</div>
            <div><strong>Tax Amount:</strong> ₹ {TaxAmount.toFixed(2)}</div>
            <div className="bold"><strong>Grand Total:</strong> ₹ {GrandTotal.toFixed(2)}</div>
        </div>
        <div class="summary-grid">
            <div class="summary-left">
                <InvoiceAmountWords amount={TotalAmount} />
            </div>
            <div class="summary-right">
                <div class="amount-item">
                    <div class="amount-label">Total Amount Before Tax</div>
                    <div class="amount-value"> ₹ {TotalAmount.toFixed(2)}</div>
                </div>
                <div class="additional-info">
                </div>
                <hr />
                <div class="summary-item-bold">
                    <span>Total Amount After Tax</span>
                    <span> ₹ {(TotalAmount + TaxAmount).toFixed(2)}</span>
                </div>
                <div class="total-amount"> ₹ {(TotalAmount + TaxAmount).toFixed(2)}</div>
            </div>
        </div>
    </>
);