"use client";

import {useState, useEffect} from "react";
import {useApolloClient} from "@apollo/client/react";
import { GET_CHECKOUT_ADDRESSES,CREATE_CHECKOUT_ADDRESS } from "@/graphql";
import { LoadingSpinner } from "@components/common/LoadingSpinner";
// import { useForm, SubmitHandler } from "react-hook-form"
import { useForm, FormProvider } from "react-hook-form"
import {normalizePhoneForForm} from "@/utils/phoneNumberTools";
import { 
    CheckoutAddressNode, 
    Country,
    ShipAddressFormData,
    BillAddressFormData,
    FullAddressFormData
} from "@/types/checkout/type";
import AddressResultDisplay from "./AddressResultDisplay";
import AddressResultDisplayLoading from "./AddressResultDisplayLoading";
import CheckoutAddressModal from "./CheckoutAddressModal";
import ShippingAddressCheckout from "./ShippingAddressCheckout";
import BillingAddressCheckout from "./BillingAddressCheckout";
import { useCustomToast } from "@/utils/hooks/useToast";
/***
 * 不用useForShipping字段了
 * 以shipping address 为准，根据shippingaddress 设置billing address
 * 保存完地址之后要重新获取运输方式和支付方式
 */

/**
 * 生成createCheckoutAddress接口的参数
 */
function generateSaveCheckoutAddressParam(formData: FullAddressFormData) {
    const formDataShippingAddress:ShipAddressFormData = {
        shippingAddressId: formData.shippingAddressId,
        shippingEmail: formData.shippingEmail,
        shippingFirstName: formData.shippingFirstName,
        shippingLastName: formData.shippingLastName,
        shippingCompanyName: formData.shippingCompanyName,
        shippingAddress: formData.shippingAddress,
        shippingCountry: formData.shippingCountry,
        shippingState: formData.shippingState,
        shippingCity: formData.shippingCity,
        shippingPostcode: formData.shippingPostcode,
        shippingPhoneNumber: formData.shippingPhoneNumber,
    };
    let formDataBillingAddress = {
        billingAddressId: formData.billingAddressId,
        billingEmail: formData.billingEmail,
        billingFirstName: formData.billingFirstName,
        billingLastName: formData.billingLastName,
        billingCompanyName : formData.billingCompanyName,
        billingAddress: formData.billingAddress,
        billingCountry: formData.billingCountry,
        billingState: formData.billingState,
        billingCity: formData.billingCity,
        billingPostcode: formData.billingPostcode,
        billingPhoneNumber: formData.billingPhoneNumber,

        useForShipping: false,
    };
    if(formData.billingSameAsShipping) {
        formDataBillingAddress = {
            billingAddressId: formData.billingAddressId,
            billingEmail: formDataShippingAddress.shippingEmail,
            billingFirstName: formDataShippingAddress.shippingFirstName,
            billingLastName: formDataShippingAddress.shippingLastName,
            billingCompanyName : formDataShippingAddress.shippingCompanyName,
            billingAddress: formDataShippingAddress.shippingAddress,
            billingCountry: formDataShippingAddress.shippingCountry,
            billingState: formDataShippingAddress.shippingState,
            billingCity: formDataShippingAddress.shippingCity,
            billingPostcode: formDataShippingAddress.shippingPostcode,
            billingPhoneNumber: formDataShippingAddress.shippingPhoneNumber,
            useForShipping: true,
        }
    }
    return {
       ...formDataShippingAddress,
       ...formDataBillingAddress
    };
    
}
/**
 * 对比shipping address与billing address的数据是否完全相同
 */
function addressIsSame(billAddress: BillAddressFormData | null, shipAddress: ShipAddressFormData | null) {
    if(billAddress === null && shipAddress === null) {
        return true;
    } else if(billAddress !== null && shipAddress !== null) {
        return (
           billAddress.billingEmail === shipAddress.shippingEmail &&
           billAddress.billingFirstName === shipAddress.shippingFirstName &&
           billAddress.billingLastName === shipAddress.shippingLastName &&
           billAddress.billingCompanyName === shipAddress.shippingCompanyName &&
           billAddress.billingAddress === shipAddress.shippingAddress &&
           billAddress.billingCity === shipAddress.shippingCity &&
           billAddress.billingState === shipAddress.shippingState &&
           billAddress.billingCountry === shipAddress.shippingCountry &&
           billAddress.billingPostcode === shipAddress.shippingPostcode &&
           billAddress.billingPhoneNumber === shipAddress.shippingPhoneNumber 
        );
    } else {
        return false;
    }
}

export default function CheckoutWrapper({
    loginEmail,
    countries
}: {
    loginEmail: string;
    countries: Country[]
}) {
    const { showToast } = useCustomToast();
    const apolloClient = useApolloClient();


    // useForm() 只会在组件初始化时读取一次 defaultValues
    const addressForm = useForm<FullAddressFormData>({
        mode: "onBlur",          // 或 "onChange"
        reValidateMode: "onChange", 
    });

    const [addressModalOpen, setAddressModalOpen] = useState(false);
    const [loadingData, setLoadingData] = useState(true);
    const [serverShippingAddress, setServerShippingAddress] = useState<ShipAddressFormData | null>(null);
    const [serverBillingAddress, setServerBillingAddress] = useState<BillAddressFormData | null>(null);

    const [addressSaving, setAddressSaving] = useState(false);

    // 获取checkout address
    function getCheckoutAddress(
        resolveCallback: (shippingAddress:ShipAddressFormData, billingAddress: BillAddressFormData) => void = () => {}, 
        rejectCallback: () => void = ()=> {}
    ) {
        return apolloClient.query({
            query: GET_CHECKOUT_ADDRESSES,
            fetchPolicy: "no-cache",
            context: {
                fetchOptions: {
                    cache: 'no-store',
                },
        
            }
        }).then((res) => {
            const address =  res.data?.collectionGetCheckoutAddresses?.edges?.map(
                    (edge: { node: CheckoutAddressNode }) => edge.node
                ) || [];
            const billAddress = address.find((a: CheckoutAddressNode) => a?.addressType === "cart_billing") || null;
            const shipAddress = address.find((a: CheckoutAddressNode) => a?.addressType === "cart_shipping") || null;
            const shipCountry = shipAddress?.country || "US";
            const billCountry = billAddress?.country || "US";

            const defaultBillAddress: BillAddressFormData = {
                billingAddressId: billAddress?._id || "",
                billingEmail: billAddress?.email ?? loginEmail ?? "",
                billingFirstName: billAddress?.firstName || "",
                billingLastName: billAddress?.lastName || "",
                billingCompanyName: billAddress?.companyName || "",
                billingAddress: billAddress?.address || "",
                billingCountry: billCountry,
                billingState: billAddress?.state || "",
                billingCity: billAddress?.city || "",
                billingPostcode: billAddress?.postcode || "",
                billingPhoneNumber: normalizePhoneForForm(billAddress?.phone, billCountry) || "",
                billingSameAsShipping: true, // 这个字段前端维护，不传给后端（bagisto是以billing address为准，但是运营要以shipping address为准，所以前端自己维护billing address与shipping address 同步）
            };

            const defaultShipAddress: ShipAddressFormData = {
                shippingAddressId: shipAddress?._id || "",
                shippingEmail: shipAddress?.email ?? loginEmail ?? "",
                shippingFirstName: shipAddress?.firstName || "",
                shippingLastName: shipAddress?.lastName || "",
                shippingCompanyName: shipAddress?.companyName || "",
                shippingAddress: shipAddress?.address || "",
                shippingCountry: shipCountry,
                shippingState: shipAddress?.state || "",
                shippingCity: shipAddress?.city || "",
                shippingPostcode: shipAddress?.postcode || "",
                shippingPhoneNumber: normalizePhoneForForm(shipAddress?.phone, shipCountry) || "",
            };

            const billSameAsShip = addressIsSame(defaultBillAddress, defaultShipAddress);
            defaultBillAddress.billingSameAsShipping = billSameAsShip;
            console.log('GET_CHECKOUT_ADDRESSES res ---- ',defaultShipAddress,defaultBillAddress);
            resolveCallback(defaultShipAddress,defaultBillAddress);
            return {
                shippingAddress: defaultShipAddress,
                billingAddress: defaultBillAddress
            }
     
        }).catch((err) => {
            console.error('GET_CHECKOUT_ADDRESSES error ---- ',err);
            // setLoadingData(false);
            rejectCallback();
            return null;
        });
    }

    // 开发环境会执行两次 https://zh-hans.react.dev/learn/synchronizing-with-effects#how-to-handle-the-effect-firing-twice-in-development
    useEffect(() => { 
        getCheckoutAddress((shippingAddress,billingAddress)=> {
            addressForm.reset({
                ...shippingAddress,
                ...billingAddress,
            });
            setServerShippingAddress({
                ...shippingAddress
            });
            setServerBillingAddress({
                ...billingAddress
            });
            setLoadingData(false);
        }, ()=> {
            setLoadingData(false);
        });
    }, []);


    const openAddressModal = () => {
        setAddressModalOpen(true);

        if(serverShippingAddress && serverBillingAddress) {
            addressForm.reset({
                ...serverShippingAddress,
                ...serverBillingAddress,
            });
        }
        
    };
    const closeAddressModal = (e:boolean) => {
        setAddressModalOpen(e);
        // 重置表单
        addressForm.reset();
    };
    const addressFormOnSubmit = async (formData: FullAddressFormData) => { 
        // console.log('addressFormOnSubmit ---- ',formData); return;
        // 保存完地址之后还要重新请求地址，把保存后的地址id同步到表单里；还需要获取运输方式

        const saveAddressParam = generateSaveCheckoutAddressParam(formData);
        setAddressSaving(true);
        try {
            const res = await apolloClient.mutate({
                mutation: CREATE_CHECKOUT_ADDRESS,
                variables:saveAddressParam,
            });
            console.log('CREATE_CHECKOUT_ADDRESS res ====== ',res);
            const queryAddressRes = await getCheckoutAddress();
            if(queryAddressRes !== null) {
                addressForm.resetField('shippingAddressId',{
                    defaultValue: queryAddressRes.shippingAddress.shippingAddressId
                });
                addressForm.resetField('billingAddressId',{
                    defaultValue: queryAddressRes.billingAddress.billingAddressId
                });
                setServerShippingAddress({
                    ...queryAddressRes.shippingAddress
                });
                setServerBillingAddress({
                    ...queryAddressRes.billingAddress
                });
            }
            setAddressModalOpen(false);
        } catch(err) {
            // 错误处理
            console.error("save address error", err);
           
            showToast('Save address failed. Please try again.', 'danger');
        } finally {
            setAddressSaving(false);
        }
        
    };
    // function tt() {
    //     const arr = [
    //         ['US','3803800217'], 
    //         ['CH','+4186043315'], 
    //         ['US','334-208-6177'], 
    //         ['AU','+61 404103617'], 
    //         ['US','1-9166705105'], 
    //         ['CA','819 384 3221'],
    //         ['US','(409) 239-9482'],
    //         ['US','1-(651) 421-2762'],
    //         ['CH', '1-792930242'],
    //         ['US', '+1 4570438892'],
    //         ['US', '1-+1 (404) 276-1068'],
    //         ['CH', '+49 015164340021'], // 国家与phonecode不一致情况
    //     ];
    //     arr.forEach((item) => {
    //         normalizePhoneForForm(item[1], item[0]);
    //     });
    // }
    return (
        <section className="flex flex-col items-start justify-between lg:flex-row lg:justify-between">
            {/* <button className="w-25 h-8 bg-amber-500 flex items-center justify-center" onClick={tt}>test</button> */}
                    {loadingData ? <AddressResultDisplayLoading /> 
                    :<AddressResultDisplay shippingAddress={serverShippingAddress} 
                        onAddressModalOpenClick={openAddressModal}
                    />}
                    <CheckoutAddressModal 
                        isOpen={addressModalOpen}
                        onClose={closeAddressModal}
                        body={
                            <>
                                <FormProvider {...addressForm}>
                                    <form>
                                        <ShippingAddressCheckout countries={countries} />
                                        <BillingAddressCheckout countries={countries} />
                                    </form>
                                </FormProvider>
                            </>
                        }
                        footer={
                            <button className="block flex justify-center items-center w-full h-12 bg-ly-green rounded-3xl text-white text-ly-16 font-bold"
                                onClick={addressForm.handleSubmit(addressFormOnSubmit)}
                            >
                                {addressSaving ? <LoadingSpinner /> : 'Save'}
                            </button>
                        }
                    />
           
        </section>
        
    );
};