import { useFormik } from "formik";
import * as Yup from "yup";
import { useState, useEffect } from "react";
import Modal from "../../../components/Modals";
import Timepicker from "../../../components/Timepicker";

interface Props {
    open: boolean;
    onClose: () => void;
    onSave: (data: any) => void;
}

const AddShiftTime = ({ open, onClose, onSave }: Props) => {
    //  Validation Schema
    const validationSchema = Yup.object({
        shift_name: Yup.string()
            .required("Shift name is required")
            .min(3, "Shift name must be at least 3 characters"),
        shift_start: Yup.string().required("Shift start time is required"),
        shift_end: Yup.string()
        .required("Shift end time is required")
        .test("is-greater", "End time must be after start time", function (value) {
            const { shift_start } = this.parent;

            if (!shift_start || !value) return true;

            return timeToMinutes(value) > timeToMinutes(shift_start);
        }),
        description: Yup.string().nullable(),
    });

    //  Formik
    const formik = useFormik({
        initialValues: {
            shift_name: "",
            shift_start: "",
            shift_end: "",
            description: "",
        },
        validationSchema,
        onSubmit: (values) => {
            // Prepare data for API
            const payload = {
                name: values.shift_name,
                start_time: values.shift_start,
                end_time: values.shift_end,
                description: values.description || null,
            };
            onSave(payload);
            formik.resetForm();
        },
    });
    const timeToMinutes = (time: string) => {
        if (!time) return 0;
        const [h, m] = time.split(":").map(Number);
        return h * 60 + m;
    };
    const normalizeTime = (val: any) => {
        if (!val) return "";

        if (typeof val === "string") return val.slice(0, 5); // HH:mm

        if (val instanceof Date) {
            return val.toTimeString().slice(0, 5);
        }

        return "";
    };

    // Reset form when modal closes
    useEffect(() => {
        if (!open) {
            formik.resetForm();
        }
    }, [open]);


    return (
        <Modal
            open={open}
            onClose={() => {
                onClose();
                formik.resetForm();
            }}
            title="Add Shift Time"
            maxWidth="max-w-2xl"
            footer={
                <>
                    <button
                        onClick={() => {
                            onClose();
                            formik.resetForm();
                        }}
                        className="btn btn-outline-danger"
                        type="button"
                    >
                        Cancel
                    </button>
                    <button
                        onClick={() => formik.handleSubmit()}
                        className="btn btn-primary"
                        type="button"
                    >
                        Add Shift Time
                    </button>
                </>
            }
        >
            <form className="grid grid-cols-12 gap-4">
                <div className="col-span-12">
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                        Shift Name <span className="text-red-500">*</span>
                    </label>
                    <input
                        name="shift_name"
                        placeholder="Enter shift name"
                        className="form-input w-full"
                        value={formik.values.shift_name}
                        onChange={formik.handleChange}
                        onBlur={formik.handleBlur}
                    />
                    {formik.touched.shift_name && formik.errors.shift_name && (
                        <p className="text-red-500 text-sm mt-1">{formik.errors.shift_name}</p>
                    )}
                </div>

                <div className="col-span-6">
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                        Shift Start Time <span className="text-red-500">*</span>
                    </label>
                    <Timepicker
                        value={formik.values.shift_start}
                        onChange={(val) => {
                            const time = normalizeTime(val);
                            formik.setFieldValue("shift_start", time);
                            formik.setFieldTouched("shift_start", true);

                        }}
                        placeholder="Pick start time"
                    />
                    {formik.touched.shift_start && formik.errors.shift_start && (
                        <p className="text-red-500 text-sm mt-1">{formik.errors.shift_start}</p>
                    )}
                </div>

                <div className="col-span-6">
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                        Shift End Time <span className="text-red-500">*</span>
                    </label>
                    <Timepicker
                        value={formik.values.shift_end}
                        onChange={(val) => {
                            const time = normalizeTime(val);
                            formik.setFieldValue("shift_end", time);
                            formik.setFieldTouched("shift_end", true);
                        }}
                        placeholder="Pick end time"
                    />
                    {formik.touched.shift_end && formik.errors.shift_end && (
                        <p className="text-red-500 text-sm mt-1">{formik.errors.shift_end}</p>
                    )}
                </div>

                <div className="col-span-12">
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                        Description
                    </label>
                    <textarea
                        name="description"
                        placeholder="Enter description (optional)"
                        rows={2}
                        className="form-textarea w-full"
                        value={formik.values.description}
                        onChange={formik.handleChange}
                        onBlur={formik.handleBlur}
                    />
                </div>
            </form>
        </Modal>
    );
};

export default AddShiftTime;