import React, { useCallback, useState } from "react";
import styled from "styled-components";
import {
  Button,
  FilePickerV2,
  FileType,
  SetProgress,
  Size,
  Toaster,
  Variant,
} from "design-system";
import { StyledDialog } from "./ForkModalStyles";
import { useDispatch, useSelector } from "react-redux";
import { importApplication } from "actions/applicationActions";
import { IMPORT_APPLICATION_MODAL_TITLE } from "@appsmith/constants/messages";
import { getIsImportingApplication } from "selectors/applicationSelectors";

const ImportButton = styled(Button)<{ disabled?: boolean }>`
  height: 30px;
  width: 81px;
  pointer-events: ${(props) => (!!props.disabled ? "none" : "auto")};
`;

const ButtonWrapper = styled.div`
  display: flex;
  justify-content: center;
  margin-top: ${(props) => props.theme.spaces[6]}px;
`;

const FilePickerWrapper = styled.div`
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
`;

type ImportApplicationModalProps = {
  // import?: (file: any) => void;
  workspaceId?: string;
  isModalOpen?: boolean;
  onClose?: () => void;
};

function ImportApplicationModal(props: ImportApplicationModalProps) {
  const { isModalOpen, onClose, workspaceId } = props;
  const [appFileToBeUploaded, setAppFileToBeUploaded] = useState<{
    file: File;
    setProgress: SetProgress;
  } | null>(null);
  const dispatch = useDispatch();

  const importingApplication = useSelector(getIsImportingApplication);

  const FileUploader = useCallback(
    async (file: File, setProgress: SetProgress) => {
      if (!!file) {
        setAppFileToBeUploaded({
          file,
          setProgress,
        });
      } else {
        setAppFileToBeUploaded(null);
      }
    },
    [],
  );

  const onImportApplication = useCallback(() => {
    if (!appFileToBeUploaded) {
      Toaster.show({
        text: "Please choose a valid application file!",
        variant: Variant.danger,
      });
      return;
    }
    const { file } = appFileToBeUploaded || {};

    dispatch(
      importApplication({
        workspaceId: workspaceId as string,
        applicationFile: file,
      }),
    );
  }, [appFileToBeUploaded, workspaceId]);

  const onRemoveFile = useCallback(() => setAppFileToBeUploaded(null), []);

  return (
    <StyledDialog
      canOutsideClickClose
      className={"t--import-application-modal"}
      isOpen={isModalOpen}
      maxHeight={"540px"}
      setModalClose={onClose}
      title={IMPORT_APPLICATION_MODAL_TITLE()}
    >
      <FilePickerWrapper>
        <FilePickerV2
          delayedUpload
          fileType={FileType.JSON}
          fileUploader={FileUploader}
          onFileRemoved={onRemoveFile}
        />
      </FilePickerWrapper>
      <ButtonWrapper>
        <ImportButton
          // category={ButtonCategory.tertiary}
          cypressSelector={"t--workspace-import-app-button"}
          disabled={!appFileToBeUploaded}
          isLoading={importingApplication}
          onClick={onImportApplication}
          size={Size.large}
          text={"IMPORT"}
        />
      </ButtonWrapper>
    </StyledDialog>
  );
}

export default ImportApplicationModal;