import {
    Button,
    FormControlLabel,
    MenuItem,
    Radio,
    RadioGroup,
    Select,
    TextField,
    Typography,
} from "@mui/material";
import { DesktopDatePicker } from "@mui/x-date-pickers/DesktopDatePicker";
import { Field, Form, Formik } from "formik";
import moment from "moment";
import { useEffect, useState } from "react";

import { requestPrivileges } from "@root/services/privilegies.service";
import { usePrivilegeStore } from "@root/stores/privilegesStore";

import { SERVICE_LIST } from "@root/model/privilege";
import theme from "@root/theme";

import type { TextFieldProps } from "@mui/material";
import { createPromocode } from "@root/api/promocode/swr";
import type { ChangeEvent } from "react";

type BonusType = "discount" | "privilege";

type FormValues = {
    codeword: string;
    description: string;
    greetings: string;
    dueTo: number;
    activationCount: number;
    privilegeId: string;
    amount: number;
    layer: 1 | 2;
    factor: number;
    target: string;
    threshold: number;
};

const initialValues: FormValues = {
    codeword: "",
    description: "",
    greetings: "",
    dueTo: 0,
    activationCount: 0,
    privilegeId: "",
    amount: 0,
    layer: 1,
    factor: 0,
    target: "",
    threshold: 0,
};

export const CreatePromocodeForm = () => {
    const [bonusType, setBonusType] = useState<BonusType>("discount");
    const { privileges } = usePrivilegeStore();

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

    const submitForm = (values: FormValues) => {
        const body = {
            ...values,
            threshold: values.layer === 1 ? values.threshold : values.threshold * 100,
        };

        const factorFromDiscountValue = 1 - body.factor / 100;

        return createPromocode({
            codeword: body.codeword,
            description: body.description,
            greetings: body.greetings,
            dueTo: body.dueTo,
            activationCount: body.activationCount,
            bonus: {
                privilege: { privilegeID: body.privilegeId, amount: body.amount },
                discount: {
                    layer: body.layer,
                    factor: factorFromDiscountValue,
                    target: body.target,
                    threshold: body.threshold,
                },
            },
        });
    };

    return (
        <Formik initialValues={initialValues} onSubmit={submitForm}>
            {({ values, handleChange, handleBlur, setFieldValue }) => (
                <Form
                    style={{
                        width: "100%",
                        maxWidth: "600px",
                        padding: "0 10px",
                    }}
                >
                    <CustomTextField
                        name="codeword"
                        label="Кодовое слово"
                        required
                        onChange={handleChange}
                    />
                    <CustomTextField
                        name="description"
                        label="Описание"
                        required
                        onChange={handleChange}
                    />
                    <CustomTextField
                        name="greetings"
                        label="Приветственное сообщение"
                        required
                        onChange={handleChange}
                    />
                    <Typography
                        variant="h4"
                        sx={{
                            height: "40px",
                            fontWeight: "normal",
                            marginTop: "15px",
                            color: theme.palette.secondary.main,
                        }}
                    >
                        Время существования промокода
                    </Typography>
                    <Field
                        name="dueTo"
                        as={DesktopDatePicker}
                        inputFormat="DD/MM/YYYY"
                        value={values.dueTo ? new Date(Number(values.dueTo) * 1000) : null}
                        onChange={(date: Date | null) => {
                            if (date) {
                                setFieldValue("dueTo", moment(date).unix() || null);
                            }
                        }}
                        renderInput={(params: TextFieldProps) => <TextField {...params} />}
                        InputProps={{
                            sx: {
                                height: "40px",
                                color: theme.palette.secondary.main,
                                border: "1px solid",
                                borderColor: theme.palette.secondary.main,
                                "& .MuiSvgIcon-root": { color: theme.palette.secondary.main },
                            },
                        }}
                    />
                    <CustomTextField
                        name="activationCount"
                        label="Количество активаций промокода"
                        onChange={({ target }) =>
                            setFieldValue(
                                "activationCount",
                                Number(target.value.replace(/\D/g, ""))
                            )
                        }
                    />
                    <RadioGroup
                        row
                        name="bonusType"
                        value={bonusType}
                        sx={{ marginTop: "15px" }}
                        onChange={({ target }: React.ChangeEvent<HTMLInputElement>) => {
                            setBonusType(target.value as BonusType);
                        }}
                        onBlur={handleBlur}
                    >
                        <FormControlLabel
                            value="discount"
                            control={<Radio color="secondary" />}
                            label="Скидка"
                        />
                        <FormControlLabel
                            value="privilege"
                            control={<Radio color="secondary" />}
                            label="Привилегия"
                        />
                    </RadioGroup>
                    {bonusType === "discount" && (
                        <>
                            <RadioGroup
                                row
                                name="layer"
                                value={values.layer}
                                sx={{ marginTop: "15px" }}
                                onChange={({ target }: React.ChangeEvent<HTMLInputElement>) => {
                                    setFieldValue("target", "");
                                    setFieldValue("layer", Number(target.value));
                                }}
                                onBlur={handleBlur}
                            >
                                <FormControlLabel
                                    value="1"
                                    control={<Radio color="secondary" />}
                                    label="Привилегия"
                                />
                                <FormControlLabel
                                    value="2"
                                    control={<Radio color="secondary" />}
                                    label="Сервис"
                                />
                            </RadioGroup>
                            <CustomTextField
                                name="factor"
                                label="Процент скидки"
                                required
                                onChange={({ target }) => {
                                    setFieldValue(
                                        "factor",
                                        Number(target.value.replace(/\D/g, ""))
                                    );
                                }}
                            />
                            <Typography
                                variant="h4"
                                sx={{
                                    height: "40px",
                                    fontWeight: "normal",
                                    marginTop: "15px",
                                    padding: "0 12px",
                                    color: theme.palette.secondary.main,
                                }}
                            >
                                {values.layer === 1 ? "Выбор привилегии" : "Выбор сервиса"}
                            </Typography>
                            <Field
                                name="target"
                                as={Select}
                                label={values.layer === 1 ? "Привилегия" : "Сервис"}
                                sx={{
                                    width: "100%",
                                    border: "2px solid",
                                    color: theme.palette.secondary.main,
                                    borderColor: theme.palette.secondary.main,
                                    "&.Mui-focused .MuiOutlinedInput-notchedOutline": {
                                        border: "none",
                                    },
                                    ".MuiSvgIcon-root ": { fill: theme.palette.secondary.main },
                                }}
                                children={
                                    values.layer === 1
                                        ? privileges.map(({ name, privilegeId }) => (
                                            <MenuItem key={privilegeId} value={privilegeId}>
                                                {name}
                                            </MenuItem>
                                        ))
                                        : SERVICE_LIST.map(({ displayName, serviceKey }) => (
                                            <MenuItem key={serviceKey} value={serviceKey}>
                                                {displayName}
                                            </MenuItem>
                                        ))
                                }
                            />
                            <CustomTextField
                                name="threshold"
                                label="При каком значении применяется скидка"
                                onChange={({ target }) =>
                                    setFieldValue(
                                        "threshold",
                                        Number(target.value.replace(/\D/g, ""))
                                    )
                                }
                            />
                        </>
                    )}
                    {bonusType === "privilege" && (
                        <>
                            <Typography
                                variant="h4"
                                sx={{
                                    height: "40px",
                                    fontWeight: "normal",
                                    marginTop: "15px",
                                    padding: "0 12px",
                                    color: theme.palette.secondary.main,
                                }}
                            >
                                Выбор привилегии
                            </Typography>
                            <Field
                                name="privilegeId"
                                as={Select}
                                label="Привилегия"
                                sx={{
                                    width: "100%",
                                    border: "2px solid",
                                    color: theme.palette.secondary.main,
                                    borderColor: theme.palette.secondary.main,
                                    "&.Mui-focused .MuiOutlinedInput-notchedOutline": {
                                        border: "none",
                                    },
                                    ".MuiSvgIcon-root ": { fill: theme.palette.secondary.main },
                                }}
                                children={privileges.map(({ name, privilegeId }) => (
                                    <MenuItem key={privilegeId} value={privilegeId}>
                                        {name}
                                    </MenuItem>
                                ))}
                            />
                            <CustomTextField
                                name="amount"
                                label="Количество"
                                required
                                onChange={({ target }) =>
                                    setFieldValue(
                                        "amount",
                                        Number(target.value.replace(/\D/g, ""))
                                    )
                                }
                            />
                        </>
                    )}
                    <Button
                        variant="contained"
                        sx={{
                            display: "block",
                            padding: "10px",
                            margin: "15px auto 0",
                            fontWeight: "normal",
                            fontSize: "18px",
                            backgroundColor: theme.palette.menu.main,
                            "&:hover": { backgroundColor: theme.palette.grayMedium.main },
                        }}
                        type="submit"
                    >
                        Cоздать
                    </Button>
                </Form>
            )}
        </Formik>
    );
};

type CustomTextFieldProps = {
    name: string;
    label: string;
    required?: boolean;
    onChange: (event: ChangeEvent<HTMLInputElement>) => void;
};

const CustomTextField = ({
    name,
    label,
    required = false,
    onChange,
}: CustomTextFieldProps) => (
    <Field
        name={name}
        label={label}
        required={required}
        variant="filled"
        color="secondary"
        as={TextField}
        onChange={onChange}
        sx={{ width: "100%", marginTop: "15px" }}
        InputProps={{
            style: {
                backgroundColor: theme.palette.content.main,
                color: theme.palette.secondary.main,
            },
        }}
        InputLabelProps={{
            style: { color: theme.palette.secondary.main },
        }}
    />
);