import { PatchUserRequest, UserDocumentTypes, UserDocuments, UserSettingsFieldStatus, UserSettingsField, User } from "@root/model/user";
import { produce } from "immer";
import { create } from "zustand";
import { createJSONStorage, devtools, persist } from "zustand/middleware";
import { StringSchema, string } from "yup";
import { patchUser } from "@root/api/user";
import { UserAccount, UserAccountSettingsFieldStatus, UserName, VerificationStatus } from "@root/model/account";
import { patchUserAccount } from "@root/api/account";
import { deleteCart, patchCart } from "@root/api/cart";


interface UserStore {
    userId: string | null;
    user: User | null;
    userAccount: UserAccount | null;
    settingsFields: (
        UserSettingsFieldStatus &
        UserAccountSettingsFieldStatus &
        { hasError: boolean; }
    );
    verificationStatus: VerificationStatus;
    verificationType: "juridical" | "nko";
    isDocumentsDialogOpen: boolean;
    dialogType: "juridical" | "nko";
    documents: UserDocuments;
}

const defaultFieldValues = {
    value: "",
    error: null,
    touched: false,
};

const defaultFields: UserStore["settingsFields"] = {
    firstname: { ...defaultFieldValues },
    secondname: { ...defaultFieldValues },
    middlename: { ...defaultFieldValues },
    orgname: { ...defaultFieldValues },
    email: { ...defaultFieldValues },
    phoneNumber: { ...defaultFieldValues },
    password: { ...defaultFieldValues },
    hasError: false,
};

const defaultDocument = {
    file: null,
    uploadedFileName: null,
    imageSrc: null,
};

const initialState: UserStore = {
    userId: null,
    user: null,
    userAccount: null,
    settingsFields: { ...defaultFields },
    verificationStatus: "notVerificated",
    verificationType: "juridical",
    isDocumentsDialogOpen: false,
    dialogType: "juridical",
    documents: {
        "ИНН": { ...defaultDocument },
        "Устав": { ...defaultDocument },
        "Свидетельство о регистрации НКО": { ...defaultDocument },
    },
};

export const useUserStore = create<UserStore>()(
    persist(
        devtools(
            (set, get) => initialState,
            {
                name: "User",
                enabled: process.env.NODE_ENV === "development",
                trace: true,
            }
        ),
        {
            version: 2,
            name: "user",
            storage: createJSONStorage(() => localStorage),
            partialize: state => ({
                userId: state.userId,
                user: state.user,
            }),
            migrate: (persistedState, version) => ({
                ...persistedState as UserStore,
                user: null,
            }),
        }
    )
);

export const setUserId = (userId: string | null) => useUserStore.setState({ userId });

export const setUser = (user: User) => useUserStore.setState(
    produce<UserStore>(state => {
        state.user = user;

        state.settingsFields.email.value = user?.email ?? "";
        state.settingsFields.phoneNumber.value = user?.phoneNumber ?? "";
        state.settingsFields.password.value = "";
    })
);

export const setUserAccount = (user: UserAccount) => useUserStore.setState(
    produce<UserStore>(state => {
        state.userAccount = user;

        state.settingsFields.firstname.value = user?.name.firstname ?? "";
        state.settingsFields.secondname.value = user?.name.secondname ?? "";
        state.settingsFields.middlename.value = user?.name.middlename ?? "";
        state.settingsFields.orgname.value = user?.name.orgname ?? "";
    }),
    false,
    {
        type: "setUserAccount",
        payload: user,
    }
);

export const setCart = (cart: string[]) => useUserStore.setState(
    produce<UserStore>(state => {
        if (state.userAccount) state.userAccount.cart = cart;
    })
);

export const clearUserData = () => useUserStore.setState({ ...initialState });

export const openDocumentsDialog = (type: UserStore["dialogType"]) => useUserStore.setState(
    produce<UserStore>(state => {
        state.isDocumentsDialogOpen = true;
        state.dialogType = type;
    })
);

export const closeDocumentsDialog = () => useUserStore.setState(
    produce<UserStore>(state => {
        state.isDocumentsDialogOpen = false;
    })
);

export const setDocument = (type: UserDocumentTypes, file: File | undefined) => useUserStore.setState(
    produce<UserStore>(state => {
        if (!file) {
            state.documents[type] = { ...defaultDocument };
            return;
        }

        let imageSrc: string | null = null;

        try {
            const src = state.documents[type].imageSrc;
            if (src) URL.revokeObjectURL(src);

            imageSrc = URL.createObjectURL(file);
        } catch (error) {
            console.log("Error creating object url", error);
        }

        state.documents[type] = {
            file,
            uploadedFileName: null,
            imageSrc,
        };
    })
);

export const setUploadedDocument = (type: UserDocumentTypes, fileName: string, url: string) => useUserStore.setState(
    produce<UserStore>(state => {
        state.documents[type] = {
            file: null,
            uploadedFileName: fileName,
            imageSrc: url,
        };
    })
);

export const sendDocuments = () => {
    const state = useUserStore.getState();
    const type = state.dialogType;
    const documents = state.documents;



    // const formData = new FormData();
    // formData.append("file1", file1);
    // formData.append("file2", file2);

    // revoke on success
    // Object.values(documents).map(document => document?.imageSrc).forEach(src => {
    //     if (src) URL.revokeObjectURL(src);
    // });

    // useUserStore.setState(produce<UserStore>(state => {
    //     state.isDocumentsDialogOpen = false;
    // }));
};

export const setSettingsField = (
    fieldName: UserSettingsField | keyof UserName,
    value: string,
) => useUserStore.setState(
    produce<UserStore>(state => {
        if (!state.settingsFields) return;

        let errorMessage: string | null = null;

        try {
            if (value) validators[fieldName].validateSync(value);
        } catch (error: any) {
            errorMessage = error.message;
        }

        state.settingsFields[fieldName].value = value || "";
        state.settingsFields[fieldName].touched = true;
        state.settingsFields[fieldName].error = errorMessage;

        state.settingsFields.hasError = Object.values(state.settingsFields).reduce((acc: boolean, field) => {
            if (typeof field === "boolean") return acc;

            if (field.error !== null) return true;
            return acc;
        }, false);
    })
);

export const sendUserData = async () => {
    const state = useUserStore.getState();
    if (!state.settingsFields) return;

    const isPatchingUser =
        state.settingsFields.email.touched ||
        state.settingsFields.password.touched ||
        state.settingsFields.phoneNumber.touched;

    const isPatchingUserAccount =
        state.settingsFields.firstname.touched ||
        state.settingsFields.secondname.touched ||
        state.settingsFields.middlename.touched ||
        state.settingsFields.orgname.touched;

    const userPayload: PatchUserRequest = {};

    if (state.settingsFields.email.value.length !== 0) userPayload.email = state.settingsFields.email.value;
    if (state.settingsFields.password.value.length !== 0) userPayload.password = state.settingsFields.password.value;
    if (state.settingsFields.phoneNumber.value.length !== 0) userPayload.phoneNumber = state.settingsFields.phoneNumber.value;

    const userAccountPayload: UserName = {
        firstname: state.settingsFields.firstname.value,
        secondname: state.settingsFields.secondname.value,
        middlename: state.settingsFields.middlename.value,
        orgname: state.settingsFields.orgname.value,
    };

    await Promise.all([
        isPatchingUser && patchUser(userPayload),
        isPatchingUserAccount && patchUserAccount(userAccountPayload),
    ]);
};

export const addTariffToCart = async (tariffId: string) => {
    const result = await patchCart(tariffId);
    setCart(result);
};

export const removeTariffFromCart = async (tariffId: string) => {
    const result = await deleteCart(tariffId);
    setCart(result);
};

const validators: Record<UserSettingsField | keyof UserName, StringSchema> = {
    email: string().email("Неверный email"),
    phoneNumber: string().matches(/^[+\d|\d]*$/, "Неверный номер телефона").min(6, "Номер телефона должен содержать минимум 6 символов"),
    password: string().min(8, "Минимум 8 символов").matches(/^[.,:;-_+\d\w]+$/, "Некорректные символы в пароле").optional(),
    firstname: string(),
    secondname: string(),
    middlename: string(),
    orgname: string(),
};