import ru from "date-fns/locale/ru";
import React, { useEffect, useState } from "react";
import DatePicker, { registerLocale } from "react-datepicker";
import "react-datepicker/dist/react-datepicker.css";
import { useSelector } from "react-redux";
import { Link, Navigate, useNavigate } from "react-router-dom";

import { getReportDate } from "@redux/reportSlice";

import { apiRequest } from "@api/request";

import { Footer } from "@components/Common/Footer/Footer";
import { Loader } from "@components/Common/Loader/Loader";
import { Navigation } from "@components/Navigation/Navigation";
import { ProfileBreadcrumbs } from "@components/ProfileBreadcrumbs/ProfileBreadcrumbs";
import { ProfileHeader } from "@components/ProfileHeader/ProfileHeader";

import arrow from "assets/icons/arrows/left-arrow.png";
import calendarIcon from "assets/icons/calendar.svg";
import ellipse from "assets/icons/ellipse.png";
import remove from "assets/icons/remove.svg";

import {
  getCorrectDate,
  getCreatedDate,
  hourOfNum,
} from "../Calendar/calendarHelper";
import "./reportForm.scss";

registerLocale("ru", ru);

const ReportForm = () => {
  if (localStorage.getItem("role_status") === "18") {
    return <Navigate to="/profile" replace />;
  }
  const navigate = useNavigate();
  const reportDate = useSelector(getReportDate);

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

  const [isFetching, setIsFetching] = useState(false);
  const [reportSuccess, setReportSuccess] = useState("");
  const [startDate, setStartDate] = useState(
    reportDate ? new Date(reportDate._d) : new Date(),
  );
  const [datePickerOpen, setDatePickerOpen] = useState(false);

  const [inputs, setInputs] = useState([
    { task: "", hours_spent: "", minutes_spent: 0 },
  ]);
  const [troublesInputValue, setTroublesInputValue] = useState("");
  const [scheduledInputValue, setScheduledInputValue] = useState("");

  const addInput = () => {
    setInputs((prev) => [
      ...prev,
      { task: "", hours_spent: "", minutes_spent: 0 },
    ]);
  };

  const initListeners = () => {
    document.addEventListener("click", closeByClickingOut);
  };

  const closeByClickingOut = (event) => {
    const path = event.path || (event.composedPath && event.composedPath());

    if (
      event &&
      !path.find(
        (div) =>
          div.classList &&
          (div.classList.contains("report-form__block-img") ||
            div.classList.contains("react-datepicker-popper")),
      )
    ) {
      setDatePickerOpen(false);
    }
  };

  const totalHours = inputs.reduce((a, b) => a + b.hours_spent, 0);

  const deleteInput = (indexRemove) => {
    setInputs((prev) => prev.filter((el, index) => index !== indexRemove));
  };

  const handler = () => {
    for (let input of inputs) {
      if (!input.task || !input.hours_spent) {
        setReportSuccess("Заполните задачи");
        setTimeout(() => setReportSuccess(""), 2000);
        return;
      }
    }
    apiRequest("/reports/create", {
      method: "POST",
      data: {
        tasks: inputs,
        difficulties: troublesInputValue,
        tomorrow: scheduledInputValue,
        created_at: getCreatedDate(startDate),
        status: 1,
      },
    }).then(() => {
      setReportSuccess("Отчет отправлен");
      setTimeout(() => {
        setReportSuccess("");
        navigate("/profile/calendar");
      }, 1000);
      setInputs(() => []);
      setTroublesInputValue("");
      setScheduledInputValue("");
      setIsFetching(false);
      setInputs(() => [{ task: "", hours_spent: "", minutes_spent: 0 }]);
    });
  };

  return (
    <section className="report-form">
      <ProfileHeader />
      <Navigation />
      <div className="container">
        <ProfileBreadcrumbs
          links={[
            { name: "Главная", link: "/profile" },
            { name: "Ваша отчетность", link: "/profile/calendar" },
            { name: "Страница добавления нового отчета", link: "/report" },
          ]}
        />
        <h2 className="summary__title">
          Ваши отчеты - <span>добавить отчет</span>
        </h2>
        <div>
          <div className="report__head">
            <Link className="calendar__back" to={`/profile/calendar`}>
              <img src={arrow} alt="" />
              <p>Вернуться</p>
            </Link>
          </div>
        </div>

        <div className="report-form__content">
          <div className="report-form__block">
            <div className="report-form__block-title">
              <h2>Добавление отчета за день</h2>
              <h3>Дата заполнения отчета:</h3>
            </div>
            <div
              className="report-form__block-img"
              onClick={() => setDatePickerOpen(true)}
            >
              <img
                className="report-form__calendar-icon"
                src={calendarIcon}
                alt=""
              />
              {getCorrectDate(startDate)}
            </div>
            <DatePicker
              className="datePicker"
              open={datePickerOpen}
              locale="ru"
              selected={startDate}
              onChange={(date) => {
                setDatePickerOpen(false);
                setStartDate(date);
              }}
            />
            <div className="report-form__task-list">
              <img src={ellipse} alt="" />
              <span>Какие задачи были выполнены?</span>
            </div>
          </div>

          <div className="row">
            <div className="col-8">
              <div className="report-form__task-header">
                <p className="report-form__task-title--description">
                  Краткое описание задачи
                </p>
                <p className="report-form__task-title--hours">Кол-во часов</p>
              </div>

              {inputs.map((input, index) => {
                return (
                  <form
                    id={"input"}
                    key={`input__${index}`}
                    className="report-form__task-form"
                  >
                    <div className="report-form__task-number">{index + 1}.</div>
                    <div className="report-form__task-input report-form__task-input--description">
                      <input
                        value={inputs[index].task}
                        className={
                          !input.task && reportSuccess === "Заполните задачи"
                            ? "checkTask"
                            : ""
                        }
                        name="text"
                        type="text"
                        onChange={(e) =>
                          setInputs(
                            inputs.map((input, inputIndex) => {
                              return index === inputIndex
                                ? {
                                    ...input,
                                    task: e.target.value,
                                  }
                                : input;
                            }),
                          )
                        }
                      />
                    </div>
                    <div className="report-form__task-input report-form__task-input--hours">
                      <input
                        value={inputs[index].hours_spent}
                        className={
                          !input.hours_spent &&
                          reportSuccess === "Заполните задачи"
                            ? "checkTask"
                            : ""
                        }
                        name="number"
                        type="number"
                        min="1"
                        onChange={(e) =>
                          setInputs(
                            inputs.map((input, inputIndex) => {
                              return index === inputIndex
                                ? {
                                    ...input,
                                    hours_spent: Number(e.target.value),
                                  }
                                : input;
                            }),
                          )
                        }
                      />
                    </div>
                    {index > 0 && (
                      <div className="report-form__task-remove">
                        <img
                          onClick={() => deleteInput(index)}
                          src={remove}
                          alt=""
                        />
                      </div>
                    )}
                  </form>
                );
              })}

              <div className="report-form__form-add">
                <p className="addMore" onClick={addInput}>
                  +
                </p>
                <span>Добавить ещё</span>
              </div>
            </div>
          </div>

          <div className="row">
            <div className="col-12">
              <div className="report-form__input-box">
                <div className="report-form__troubles">
                  <img src={ellipse} alt="" />
                  <span>Какие сложности возникли?</span>
                </div>
                <input
                  type="text"
                  value={troublesInputValue}
                  onChange={(e) => setTroublesInputValue(e.target.value)}
                />
                <div className="report-form__scheduled">
                  <img src={ellipse} alt="" />
                  <span>Что планируется сделать завтра?</span>
                </div>
                <input
                  type="text"
                  value={scheduledInputValue}
                  onChange={(e) => setScheduledInputValue(e.target.value)}
                />
              </div>
            </div>
          </div>
          <div className="row">
            <div className="col-12">
              <div className="report-form__footer">
                <button
                  className="report-form__footer-btn"
                  onClick={() => handler()}
                >
                  {isFetching ? <Loader /> : "Отправить"}
                </button>
                <p className="report-form__footer-text">
                  Всего за день:{" "}
                  <span>
                    {totalHours} {hourOfNum(totalHours)}
                  </span>
                </p>
                {reportSuccess && (
                  <p
                    className={`report-form__footer-done ${
                      reportSuccess === "Заполните задачи" ? "errorText" : ""
                    }`}
                  >
                    {reportSuccess}
                  </p>
                )}
              </div>
            </div>
          </div>
        </div>
      </div>
      <Footer />
    </section>
  );
};

export default ReportForm;