import { useEffect, useState } from "react";

import { useRouter } from "next/router";

// mobx
import { useMobxStore } from "lib/mobx/store-provider";
import { observer } from "mobx-react-lite";
// headless ui
import { Disclosure } from "@headlessui/react";
// components
import {
  CustomCheckboxAttribute,
  CustomDateTimeAttribute,
  CustomFileAttribute,
  CustomRelationAttribute,
  CustomSelectAttribute,
} from "components/custom-attributes";
// ui
import { Loader, ToggleSwitch } from "components/ui";
// icons
import { ChevronDown } from "lucide-react";
// types
import { TCustomAttributeTypes } from "types";

type Props = {
  entityId: string;
  issueId: string;
  onChange: (attributeId: string, val: string | string[] | undefined) => void;
  projectId: string;
  values: { [key: string]: string[] };
};

const DESCRIPTION_FIELDS: TCustomAttributeTypes[] = ["email", "number", "text", "url"];

export const IssueModalCustomAttributesList: React.FC<Props> = observer((props) => {
  const { entityId, issueId, onChange, projectId, values } = props;

  const [hideOptionalFields, setHideOptionalFields] = useState(false);

  const router = useRouter();
  const { workspaceSlug } = router.query;

  const { customAttributes: customAttributesStore } = useMobxStore();
  const { entityAttributes, fetchEntityDetails, fetchEntityDetailsLoader } = customAttributesStore;

  const attributes = entityAttributes[entityId] ?? {};

  // fetch entity details
  useEffect(() => {
    if (!entityAttributes[entityId]) {
      if (!workspaceSlug) return;

      fetchEntityDetails(workspaceSlug.toString(), entityId);
    }
  }, [entityAttributes, entityId, fetchEntityDetails, workspaceSlug]);

  const descriptionFields = Object.values(attributes).filter((a) =>
    DESCRIPTION_FIELDS.includes(a.type)
  );
  const nonDescriptionFields = Object.values(attributes).filter(
    (a) => !DESCRIPTION_FIELDS.includes(a.type)
  );

  return (
    <>
      {fetchEntityDetailsLoader ? (
        <Loader className="flex items-center gap-2">
          <Loader.Item height="27px" width="90px" />
          <Loader.Item height="27px" width="90px" />
          <Loader.Item height="27px" width="90px" />
        </Loader>
      ) : (
        <>
          <Disclosure defaultOpen>
            {({ open }) => (
              <>
                <div className="flex items-center justify-between gap-2">
                  <Disclosure.Button className="font-medium flex items-center gap-2">
                    <ChevronDown
                      className={`transition-all ${open ? "" : "-rotate-90"}`}
                      size={14}
                      strokeWidth={1.5}
                    />
                    Description Fields
                  </Disclosure.Button>
                  <div className={`flex items-center gap-1 ${open ? "" : "hidden"}`}>
                    <span className="text-xs">Hide optional fields</span>
                    <ToggleSwitch
                      value={hideOptionalFields}
                      onChange={() => setHideOptionalFields((prev) => !prev)}
                    />
                  </div>
                </div>
                <Disclosure.Panel className="space-y-3.5 mt-2">
                  {Object.entries(descriptionFields).map(([attributeId, attribute]) => (
                    <div
                      key={attributeId}
                      className={hideOptionalFields && attribute.is_required ? "hidden" : ""}
                    >
                      <input
                        type={attribute.type}
                        className="border border-custom-border-200 rounded w-full px-2 py-1.5 text-xs placeholder:text-custom-text-400 focus:outline-none"
                        placeholder={attribute.display_name}
                        min={attribute.extra_settings.divided_by ? 0 : undefined}
                        max={attribute.extra_settings.divided_by ?? undefined}
                        value={values[attribute.id]?.[0] ?? attribute.default_value}
                        onChange={(e) => onChange(attribute.id, e.target.value)}
                        required={attribute.is_required}
                      />
                      {attribute.type === "number" &&
                        attribute.extra_settings?.representation !== "numerical" && (
                          <span className="text-custom-text-400 text-[10px]">
                            Maximum value: {attribute.extra_settings?.divided_by}
                          </span>
                        )}
                    </div>
                  ))}
                </Disclosure.Panel>
              </>
            )}
          </Disclosure>
          <div className="flex items-center gap-2 flex-wrap mt-3.5">
            {Object.entries(nonDescriptionFields).map(([attributeId, attribute]) => (
              <div key={attributeId}>
                {attribute.type === "checkbox" && (
                  <CustomCheckboxAttribute
                    attributeDetails={attribute}
                    issueId={issueId}
                    onChange={(val) => onChange(attribute.id, [`${val}`])}
                    projectId={projectId}
                    value={values[attribute.id]?.[0] === "true" ? true : false}
                  />
                )}
                {attribute.type === "datetime" && (
                  <CustomDateTimeAttribute
                    attributeDetails={attribute}
                    className="bg-transparent border border-custom-border-200 py-1"
                    issueId={issueId}
                    onChange={(val) =>
                      onChange(attribute.id, val ? [val.toISOString()] : undefined)
                    }
                    projectId={projectId}
                    value={
                      values[attribute.id]?.[0] ? new Date(values[attribute.id]?.[0]) : undefined
                    }
                  />
                )}
                {attribute.type === "file" && (
                  <CustomFileAttribute
                    attributeDetails={attribute}
                    className="bg-transparent border border-custom-border-200 py-1"
                    issueId={issueId}
                    onChange={(val) => onChange(attribute.id, val)}
                    projectId={projectId}
                    value={values[attribute.id]?.[0]}
                  />
                )}
                {attribute.type === "multi_select" && (
                  <CustomSelectAttribute
                    attributeDetails={attribute}
                    className="bg-transparent border border-custom-border-200 py-1"
                    issueId={issueId}
                    onChange={(val) => onChange(attribute.id, val)}
                    projectId={projectId}
                    value={values[attribute.id] ?? []}
                    multiple
                  />
                )}
                {attribute.type === "relation" && (
                  <CustomRelationAttribute
                    attributeDetails={attribute}
                    className="bg-transparent border border-custom-border-200 py-1"
                    issueId={issueId}
                    onChange={(val) => onChange(attribute.id, val)}
                    projectId={projectId}
                    value={values[attribute.id]?.[0]}
                  />
                )}
                {attribute.type === "select" && (
                  <CustomSelectAttribute
                    attributeDetails={attribute}
                    className="bg-transparent border border-custom-border-200 py-1"
                    issueId={issueId}
                    onChange={(val) => onChange(attribute.id, val)}
                    projectId={projectId}
                    value={values[attribute.id]?.[0]}
                    multiple={false}
                  />
                )}
              </div>
            ))}
          </div>
        </>
      )}
    </>
  );
});