import React, { useEffect } from "react";

import { useRouter } from "next/router";

import { useForm } from "react-hook-form";

import { mutate } from "swr";

// services
import estimatesService from "services/estimates.service";
// headless ui
import { Dialog, Transition } from "@headlessui/react";
// hooks
import useToast from "hooks/use-toast";
// ui
import { Input, PrimaryButton, SecondaryButton } from "components/ui";
// types
import type { IEstimate, IEstimatePoint } from "types";
// fetch-keys
import { ESTIMATE_POINTS_LIST } from "constants/fetch-keys";

type Props = {
  isOpen: boolean;
  data?: IEstimatePoint[];
  estimate: IEstimate | null;
  onClose: () => void;
};

interface FormValues {
  value1: string;
  value2: string;
  value3: string;
  value4: string;
  value5: string;
  value6: string;
}

const defaultValues: FormValues = {
  value1: "",
  value2: "",
  value3: "",
  value4: "",
  value5: "",
  value6: "",
};

export const EstimatePointsModal: React.FC<Props> = ({ isOpen, data, estimate, onClose }) => {
  const router = useRouter();
  const { workspaceSlug, projectId } = router.query;

  const { setToastAlert } = useToast();

  const {
    register,
    formState: { isSubmitting },
    handleSubmit,
    reset,
  } = useForm<FormValues>({ defaultValues });

  const handleClose = () => {
    onClose();
    reset();
  };

  const createEstimatePoints = async (formData: FormValues) => {
    if (!workspaceSlug || !projectId) return;

    const payload = {
      estimate_points: [
        {
          key: 0,
          value: formData.value1,
        },
        {
          key: 1,
          value: formData.value2,
        },
        {
          key: 2,
          value: formData.value3,
        },
        {
          key: 3,
          value: formData.value4,
        },
        {
          key: 4,
          value: formData.value5,
        },
        {
          key: 5,
          value: formData.value6,
        },
      ],
    };

    await estimatesService
      .createEstimatePoints(
        workspaceSlug as string,
        projectId as string,
        estimate?.id as string,
        payload
      )
      .then(() => {
        handleClose();
      })
      .catch(() => {
        setToastAlert({
          type: "error",
          title: "Error!",
          message: "Estimate points could not be created. Please try again.",
        });
      });
  };

  const updateEstimatePoints = async (formData: FormValues) => {
    if (!workspaceSlug || !projectId || !data || data.length === 0) return;

    const payload = {
      estimate_points: data.map((d, index) => ({
        id: d.id,
        value: (formData as any)[`value${index + 1}`],
      })),
    };

    await estimatesService
      .patchEstimatePoints(
        workspaceSlug as string,
        projectId as string,
        estimate?.id as string,
        payload
      )
      .then(() => {
        handleClose();
      })
      .catch(() => {
        setToastAlert({
          type: "error",
          title: "Error!",
          message: "Estimate points could not be created. Please try again.",
        });
      });
  };

  const onSubmit = async (formData: FormValues) => {
    let c = 0;

    Object.keys(formData).map((key) => {
      if (formData[key as keyof FormValues] === "") c++;
    });

    if (c !== 0) {
      setToastAlert({
        type: "error",
        title: "Error!",
        message: "Please fill all the fields.",
      });
      return;
    }

    if (data && data.length !== 0) await updateEstimatePoints(formData);
    else await createEstimatePoints(formData);

    if (estimate) mutate(ESTIMATE_POINTS_LIST(estimate.id));
  };

  useEffect(() => {
    if (!data || data.length < 6) return;

    reset({
      ...defaultValues,
      value1: data[0].value,
      value2: data[1].value,
      value3: data[2].value,
      value4: data[3].value,
      value5: data[4].value,
      value6: data[5].value,
    });
  }, [data, reset]);

  return (
    <Transition.Root show={isOpen} as={React.Fragment}>
      <Dialog as="div" className="relative z-20" onClose={() => handleClose()}>
        <Transition.Child
          as={React.Fragment}
          enter="ease-out duration-300"
          enterFrom="opacity-0"
          enterTo="opacity-100"
          leave="ease-in duration-200"
          leaveFrom="opacity-100"
          leaveTo="opacity-0"
        >
          <div className="fixed inset-0 bg-gray-500 bg-opacity-75 transition-opacity" />
        </Transition.Child>

        <div className="fixed inset-0 z-20 overflow-y-auto">
          <div className="flex min-h-full items-center justify-center p-4 text-center sm:p-0">
            <Transition.Child
              as={React.Fragment}
              enter="ease-out duration-300"
              enterFrom="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
              enterTo="opacity-100 translate-y-0 sm:scale-100"
              leave="ease-in duration-200"
              leaveFrom="opacity-100 translate-y-0 sm:scale-100"
              leaveTo="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
            >
              <Dialog.Panel className="relative transform rounded-lg bg-white px-5 py-8 text-left shadow-xl transition-all sm:my-8 sm:w-full sm:max-w-2xl sm:p-6">
                <form onSubmit={handleSubmit(onSubmit)}>
                  <div className="space-y-3">
                    <div className="flex flex-col gap-3">
                      <h4 className="text-lg font-medium leading-6">
                        {data && data.length > 0 ? "Update" : "Create"} Estimate Points
                      </h4>
                      <div className="grid grid-cols-3 gap-3">
                        <div className="flex items-center">
                          <span className="bg-gray-100 h-full flex items-center rounded-lg">
                            <span className="px-2 rounded-lg text-sm  text-gray-600">1</span>
                            <span className="bg-white rounded-lg">
                              <Input
                                id="name"
                                name="value1"
                                type="name"
                                placeholder="Point 1"
                                autoComplete="off"
                                register={register}
                              />
                            </span>
                          </span>
                        </div>
                        <div className="flex items-center">
                          <span className="bg-gray-100 h-full flex items-center rounded-lg">
                            <span className="px-2 rounded-lg text-sm  text-gray-600">2</span>
                            <span className="bg-white rounded-lg">
                              <Input
                                id="name"
                                name="value2"
                                type="name"
                                placeholder="Point 2"
                                autoComplete="off"
                                register={register}
                              />
                            </span>
                          </span>
                        </div>
                        <div className="flex items-center">
                          <span className="bg-gray-100 h-full flex items-center rounded-lg">
                            <span className="px-2 rounded-lg text-sm text-gray-600">3</span>
                            <span className="bg-white rounded-lg">
                              <Input
                                id="name"
                                name="value3"
                                type="name"
                                placeholder="Point 3"
                                autoComplete="off"
                                register={register}
                              />
                            </span>
                          </span>
                        </div>
                        <div className="flex items-center">
                          <span className="bg-gray-100 h-full flex items-center rounded-lg">
                            <span className="px-2 rounded-lg text-sm  text-gray-600">4</span>
                            <span className="bg-white rounded-lg">
                              <Input
                                id="name"
                                name="value4"
                                type="name"
                                placeholder="Point 4"
                                autoComplete="off"
                                register={register}
                              />
                            </span>
                          </span>
                        </div>
                        <div className="flex items-center">
                          <span className="bg-gray-100 h-full flex items-center rounded-lg">
                            <span className="px-2 rounded-lg text-sm  text-gray-600">5</span>
                            <span className="bg-white rounded-lg">
                              <Input
                                id="name"
                                name="value5"
                                type="name"
                                placeholder="Point 5"
                                autoComplete="off"
                                register={register}
                              />
                            </span>
                          </span>
                        </div>
                        <div className="flex items-center">
                          <span className="bg-gray-100 h-full flex items-center rounded-lg">
                            <span className="px-2 rounded-lg text-sm  text-gray-600">6</span>
                            <span className="bg-white rounded-lg">
                              <Input
                                id="name"
                                name="value6"
                                type="name"
                                placeholder="Point 6"
                                autoComplete="off"
                                register={register}
                              />
                            </span>
                          </span>
                        </div>
                      </div>
                    </div>
                  </div>

                  <div className="mt-5 flex justify-end gap-2">
                    <SecondaryButton onClick={() => handleClose()}>Cancel</SecondaryButton>
                    <PrimaryButton type="submit" loading={isSubmitting}>
                      {data && data.length > 0
                        ? isSubmitting
                          ? "Updating Points..."
                          : "Update Points"
                        : isSubmitting
                        ? "Creating Points..."
                        : "Create Points"}
                    </PrimaryButton>
                  </div>
                </form>
              </Dialog.Panel>
            </Transition.Child>
          </div>
        </div>
      </Dialog>
    </Transition.Root>
  );
};
