import React, { useState, useEffect } from "react";
// swr
import useSWR, { mutate } from "swr";
// react hook form
import { useForm } from "react-hook-form";
// headless
import { Dialog, Transition } from "@headlessui/react";
// services
import projectServices from "lib/services/project.service";
import workspaceService from "lib/services/workspace.service";
// common
import { createSimilarString } from "constants/common";
// constants
import { NETWORK_CHOICES } from "constants/";
// fetch keys
import { PROJECTS_LIST, WORKSPACE_MEMBERS } from "constants/fetch-keys";
// hooks
import useUser from "lib/hooks/useUser";
import useToast from "lib/hooks/useToast";
// ui
import { Button, Input, TextArea, Select } from "ui";
// types
import { IProject } from "types";

type Props = {
  isOpen: boolean;
  setIsOpen: React.Dispatch<React.SetStateAction<boolean>>;
};

const defaultValues: Partial<IProject> = {
  name: "",
  identifier: "",
  description: "",
  network: 0,
};

const IsGuestCondition: React.FC<{
  setIsOpen: React.Dispatch<React.SetStateAction<boolean>>;
}> = ({ setIsOpen }) => {
  const { setToastAlert } = useToast();

  useEffect(() => {
    setIsOpen(false);
    setToastAlert({
      title: "Error",
      type: "error",
      message: "You don't have permission to create project.",
    });
  }, [setIsOpen, setToastAlert]);

  return null;
};

const CreateProjectModal: React.FC<Props> = ({ isOpen, setIsOpen }) => {
  const handleClose = () => {
    setIsOpen(false);
    const timeout = setTimeout(() => {
      reset(defaultValues);
      clearTimeout(timeout);
    }, 500);
  };

  const { activeWorkspace, user } = useUser();

  const { data: workspaceMembers } = useSWR(
    activeWorkspace ? WORKSPACE_MEMBERS(activeWorkspace.slug) : null,
    activeWorkspace ? () => workspaceService.workspaceMembers(activeWorkspace.slug) : null,
    {
      shouldRetryOnError: false,
    }
  );

  const [recommendedIdentifier, setRecommendedIdentifier] = useState<string[]>([]);

  const { setToastAlert } = useToast();

  const [isChangeIdentifierRequired, setIsChangeIdentifierRequired] = useState(true);

  const {
    register,
    formState: { errors, isSubmitting },
    handleSubmit,
    reset,
    setError,
    clearErrors,
    watch,
    setValue,
  } = useForm<IProject>({
    defaultValues,
  });

  const onSubmit = async (formData: IProject) => {
    if (!activeWorkspace) return;
    await projectServices
      .createProject(activeWorkspace.slug, formData)
      .then((res) => {
        console.log(res);
        mutate<IProject[]>(
          PROJECTS_LIST(activeWorkspace.slug),
          (prevData) => [res, ...(prevData ?? [])],
          false
        );
        setToastAlert({
          title: "Success",
          type: "success",
          message: "Project created successfully",
        });
        handleClose();
      })
      .catch((err) => {
        if (err.status === 403) {
          setToastAlert({
            title: "Error",
            type: "error",
            message: "You don't have permission to create project.",
          });
          handleClose();
          return;
        }
        err = err.data;
        Object.keys(err).map((key) => {
          const errorMessages = err[key];
          setError(key as keyof IProject, {
            message: Array.isArray(errorMessages) ? errorMessages.join(", ") : errorMessages,
          });
        });
      });
  };

  const projectName = watch("name") ?? "";
  const projectIdentifier = watch("identifier") ?? "";

  useEffect(() => {
    if (projectName && isChangeIdentifierRequired) {
      setValue("identifier", projectName.replace(/ /g, "").toUpperCase().substring(0, 3));
    }
  }, [projectName, projectIdentifier, setValue, isChangeIdentifierRequired]);

  useEffect(() => {
    if (!projectName) return;
    const suggestedIdentifier = createSimilarString(
      projectName.replace(/ /g, "").toUpperCase().substring(0, 3)
    );

    setRecommendedIdentifier([
      suggestedIdentifier + Math.floor(Math.random() * 101),
      suggestedIdentifier + Math.floor(Math.random() * 101),
      projectIdentifier.toUpperCase().substring(0, 3) + Math.floor(Math.random() * 101),
      projectIdentifier.toUpperCase().substring(0, 3) + Math.floor(Math.random() * 101),
    ]);
  }, [errors.identifier, projectIdentifier, projectName]);

  useEffect(() => {
    return () => setIsChangeIdentifierRequired(true);
  }, [isOpen]);

  if (workspaceMembers) {
    const isMember = workspaceMembers.find((member) => member.member.id === user?.id);
    const isGuest = workspaceMembers.find(
      (member) => member.member.id === user?.id && member.role === 5
    );

    if ((!isMember || isGuest) && isOpen) return <IsGuestCondition setIsOpen={setIsOpen} />;
  }

  return (
    <Transition.Root show={isOpen} as={React.Fragment}>
      <Dialog as="div" className="relative z-10" 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-10 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 overflow-hidden rounded-lg bg-white px-5 py-8 text-left shadow-xl transition-all sm:w-full sm:max-w-2xl sm:p-6">
                <form onSubmit={handleSubmit(onSubmit)}>
                  <div className="space-y-5">
                    <Dialog.Title as="h3" className="text-lg font-medium leading-6 text-gray-900">
                      Create Project
                    </Dialog.Title>
                    <div className="mt-2">
                      <p className="text-sm text-gray-500">
                        Create a new project to start working on it.
                      </p>
                    </div>
                    <div className="space-y-3">
                      <div>
                        <Input
                          id="name"
                          label="Name"
                          name="name"
                          type="name"
                          placeholder="Enter name"
                          error={errors.name}
                          register={register}
                          validations={{
                            required: "Name is required",
                          }}
                        />
                      </div>
                      <div>
                        <Select
                          name="network"
                          id="network"
                          options={Object.keys(NETWORK_CHOICES).map((key) => ({
                            value: key,
                            label: NETWORK_CHOICES[key as keyof typeof NETWORK_CHOICES],
                          }))}
                          label="Network"
                          register={register}
                          validations={{
                            required: "Network is required",
                          }}
                        />
                      </div>
                      <div>
                        <TextArea
                          id="description"
                          name="description"
                          label="Description"
                          placeholder="Enter description"
                          error={errors.description}
                          register={register}
                        />
                      </div>
                      <div>
                        <Input
                          id="identifier"
                          label="Identifier"
                          name="identifier"
                          type="text"
                          placeholder="Enter Project Identifier"
                          error={errors.identifier}
                          register={register}
                          onChange={() => setIsChangeIdentifierRequired(false)}
                          validations={{
                            required: "Identifier is required",
                            minLength: {
                              value: 1,
                              message: "Identifier must at least be of 1 character",
                            },
                            maxLength: {
                              value: 5,
                              message: "Identifier must at most be of 5 characters",
                            },
                          }}
                        />
                        {errors.identifier && (
                          <div className="mt-2">
                            <p>Ops! Identifier is already taken. Try one of the following:</p>
                            <div className="flex gap-x-2">
                              {recommendedIdentifier.map((identifier) => (
                                <button
                                  key={identifier}
                                  type="button"
                                  className="text-sm text-gray-500 hover:text-gray-700 border p-2 py-0.5 rounded"
                                  onClick={() => {
                                    clearErrors("identifier");
                                    setValue("identifier", identifier);
                                    setIsChangeIdentifierRequired(false);
                                  }}
                                >
                                  {identifier}
                                </button>
                              ))}
                            </div>
                          </div>
                        )}
                      </div>
                    </div>
                  </div>
                  <div className="mt-5 sm:mt-6 sm:grid sm:grid-flow-row-dense sm:grid-cols-2 sm:gap-3">
                    <Button theme="secondary" onClick={handleClose}>
                      Cancel
                    </Button>
                    <Button type="submit" disabled={isSubmitting}>
                      {isSubmitting ? "Creating Project..." : "Create Project"}
                    </Button>
                  </div>
                </form>
              </Dialog.Panel>
            </Transition.Child>
          </div>
        </div>
      </Dialog>
    </Transition.Root>
  );
};

export default CreateProjectModal;