import { Dispatch, SetStateAction, useEffect, useState, FC } from "react";
import { useRouter } from "next/router";
import { observer } from "mobx-react-lite";
import { Controller, useForm } from "react-hook-form";
// mobx store
import { useMobxStore } from "lib/mobx/store-provider";
// services
import { WorkspaceService } from "services/workspace.service";
// hooks
import useToast from "hooks/use-toast";
// ui
import { Button, CustomSelect, Input } from "@plane/ui";
// types
import { IWorkspace } from "types";
// constants
import { ORGANIZATION_SIZE, RESTRICTED_URLS } from "constants/workspace";

type Props = {
  onSubmit?: (res: IWorkspace) => Promise<void>;
  defaultValues: {
    name: string;
    slug: string;
    organization_size: string;
  };
  setDefaultValues: Dispatch<SetStateAction<any>>;
  secondaryButton?: React.ReactNode;
  primaryButtonText?: {
    loading: string;
    default: string;
  };
};

const workspaceService = new WorkspaceService();

export const CreateWorkspaceForm: FC<Props> = observer((props) => {
  const {
    onSubmit,
    defaultValues,
    setDefaultValues,
    secondaryButton,
    primaryButtonText = {
      loading: "Creating...",
      default: "Create Workspace",
    },
  } = props;

  const [slugError, setSlugError] = useState(false);
  const [invalidSlug, setInvalidSlug] = useState(false);

  const router = useRouter();

  const { workspace: workspaceStore, trackEvent: { postHogEventTracker } } = useMobxStore();

  const { setToastAlert } = useToast();

  const {
    handleSubmit,
    control,
    setValue,
    getValues,
    formState: { errors, isSubmitting, isValid },
  } = useForm<IWorkspace>({ defaultValues, mode: "onChange" });

  const handleCreateWorkspace = async (formData: IWorkspace) => {
    await workspaceService
      .workspaceSlugCheck(formData.slug)
      .then(async (res) => {
        if (res.status === true && !RESTRICTED_URLS.includes(formData.slug)) {
          setSlugError(false);

          await workspaceStore
            .createWorkspace(formData)
            .then(async (res) => {
              postHogEventTracker(
                "WORKSPACE_CREATED",
                {
                  ...res,
                  state: "SUCCESS"
                },
              )
              setToastAlert({
                type: "success",
                title: "Success!",
                message: "Workspace created successfully.",
              });

              if (onSubmit) await onSubmit(res);
            })
            .catch(() =>
            {
              setToastAlert({
                type: "error",
                title: "Error!",
                message: "Workspace could not be created. Please try again.",
              })
              postHogEventTracker(
                "WORKSPACE_CREATED",
                {
                  state: "FAILED"
                },
              )
            }
            );
        } else setSlugError(true);
      })
      .catch(() => {
        setToastAlert({
          type: "error",
          title: "Error!",
          message: "Some error occurred while creating workspace. Please try again.",
        });
        postHogEventTracker(
          "WORKSPACE_CREATED",
          {
            state: "FAILED"
          },
        )
      });
  };

  useEffect(
    () => () => {
      // when the component unmounts set the default values to whatever user typed in
      setDefaultValues(getValues());
    },
    [getValues, setDefaultValues]
  );

  return (
    <form className="space-y-6 sm:space-y-9" onSubmit={handleSubmit(handleCreateWorkspace)}>
      <div className="space-y-6 sm:space-y-7">
        <div className="space-y-1 text-sm">
          <label htmlFor="workspaceName">Workspace Name</label>
          <Controller
            control={control}
            name="name"
            rules={{
              required: "Workspace name is required",
              validate: (value) =>
                /^[\w\s-]*$/.test(value) || `Name can only contain (" "), ( - ), ( _ ) & alphanumeric characters.`,
              maxLength: {
                value: 80,
                message: "Workspace name should not exceed 80 characters",
              },
            }}
            render={({ field: { value, ref, onChange } }) => (
              <Input
                id="workspaceName"
                type="text"
                value={value}
                onChange={(e) => {
                  onChange(e.target.value);
                  setValue("name", e.target.value);
                  setValue("slug", e.target.value.toLocaleLowerCase().trim().replace(/ /g, "-"));
                }}
                ref={ref}
                hasError={Boolean(errors.name)}
                placeholder="Enter workspace name..."
                className="w-full"
              />
            )}
          />
        </div>
        <div className="space-y-1 text-sm">
          <label htmlFor="workspaceUrl">Workspace URL</label>
          <div className="flex w-full items-center rounded-md border-[0.5px] border-custom-border-200 px-3">
            <span className="whitespace-nowrap text-sm text-custom-text-200">{window && window.location.host}/</span>
            <Controller
              control={control}
              name="slug"
              rules={{
                required: "Workspace URL is required",
              }}
              render={({ field: { onChange, value, ref } }) => (
                <Input
                  id="workspaceUrl"
                  type="text"
                  value={value.toLocaleLowerCase().trim().replace(/ /g, "-")}
                  onChange={(e) => {
                    /^[a-zA-Z0-9_-]+$/.test(e.target.value) ? setInvalidSlug(false) : setInvalidSlug(true);
                    onChange(e.target.value.toLowerCase());
                  }}
                  ref={ref}
                  hasError={Boolean(errors.slug)}
                  placeholder="Enter workspace url..."
                  className="block rounded-md bg-transparent py-2 !px-0 text-sm w-full border-none"
                />
              )}
            />
          </div>
          {slugError && <span className="-mt-3 text-sm text-red-500">Workspace URL is already taken!</span>}
          {invalidSlug && (
            <span className="text-sm text-red-500">{`URL can only contain ( - ), ( _ ) & alphanumeric characters.`}</span>
          )}
        </div>
        <div className="space-y-1 text-sm">
          <span>What size is your organization?</span>
          <div className="w-full">
            <Controller
              name="organization_size"
              control={control}
              rules={{ required: "This field is required" }}
              render={({ field: { value, onChange } }) => (
                <CustomSelect
                  value={value}
                  onChange={onChange}
                  label={
                    ORGANIZATION_SIZE.find((c) => c === value) ?? (
                      <span className="text-custom-text-400">Select organization size</span>
                    )
                  }
                  buttonClassName="!border-[0.5px] !border-custom-border-200 !shadow-none"
                  input
                  width="w-full"
                >
                  {ORGANIZATION_SIZE.map((item) => (
                    <CustomSelect.Option key={item} value={item}>
                      {item}
                    </CustomSelect.Option>
                  ))}
                </CustomSelect>
              )}
            />
            {errors.organization_size && (
              <span className="text-sm text-red-500">{errors.organization_size.message}</span>
            )}
          </div>
        </div>
      </div>

      <div className="flex items-center gap-4">
        {secondaryButton}
        <Button variant="primary" type="submit" size="md" disabled={!isValid} loading={isSubmitting}>
          {isSubmitting ? primaryButtonText.loading : primaryButtonText.default}
        </Button>
        {!secondaryButton && (
          <Button variant="neutral-primary" type="button" size="md" onClick={() => router.back()}>
            Go back
          </Button>
        )}
      </div>
    </form>
  );
});