import { defineMessages, type IntlShape } from 'react-intl';

import toast from 'soapbox/toast';
import { isLoggedIn } from 'soapbox/utils/auth';
import { getFeatures } from 'soapbox/utils/features';
import { formatBytes, getVideoDuration } from 'soapbox/utils/media';
import resizeImage from 'soapbox/utils/resize-image';

import api from '../api';

import type { AxiosError } from 'axios';
import type { AppDispatch, RootState } from 'soapbox/store';
import type { APIEntity } from 'soapbox/types/entities';

const messages = defineMessages({
  exceededImageSizeLimit: { id: 'upload_error.image_size_limit', defaultMessage: 'Image exceeds the current file size limit ({limit})' },
  exceededVideoSizeLimit: { id: 'upload_error.video_size_limit', defaultMessage: 'Video exceeds the current file size limit ({limit})' },
  exceededVideoDurationLimit: { id: 'upload_error.video_duration_limit', defaultMessage: 'Video exceeds the current duration limit ({limit, plural, one {# second} other {# seconds}})' },
});

const noOp = (e: any) => {};

const fetchMedia = (mediaId: string) =>
  (dispatch: any, getState: () => RootState) => {
    return api(getState).get(`/api/v1/media/${mediaId}`);
  };

const updateMedia = (mediaId: string, params: Record<string, any>) =>
  (dispatch: any, getState: () => RootState) => {
    return api(getState).put(`/api/v1/media/${mediaId}`, params);
  };

const uploadMediaV1 = (data: FormData, onUploadProgress = noOp) =>
  (dispatch: any, getState: () => RootState) =>
    api(getState).post('/api/v1/media', data, {
      onUploadProgress: onUploadProgress,
    });

const uploadMediaV2 = (data: FormData, onUploadProgress = noOp) =>
  (dispatch: any, getState: () => RootState) =>
    api(getState).post('/api/v2/media', data, {
      onUploadProgress: onUploadProgress,
    });

const uploadMedia = (data: FormData, onUploadProgress = noOp) =>
  (dispatch: AppDispatch, getState: () => RootState) => {
    const state = getState();
    const instance = state.instance;
    const features = getFeatures(instance);

    if (features.mediaV2) {
      return dispatch(uploadMediaV2(data, onUploadProgress));
    } else {
      return dispatch(uploadMediaV1(data, onUploadProgress));
    }
  };

const uploadFile = (
  file: File,
  intl: IntlShape,
  onSuccess: (data: APIEntity) => void = () => {},
  onFail: (error: AxiosError | true) => void = () => {},
  onProgress: (loaded: number) => void = () => {},
  changeTotal: (value: number) => void = () => {},
) =>
  async (dispatch: AppDispatch, getState: () => RootState) => {
    if (!isLoggedIn(getState)) return;
    const maxImageSize = getState().instance.configuration.getIn(['media_attachments', 'image_size_limit']) as number | undefined;
    const maxVideoSize = getState().instance.configuration.getIn(['media_attachments', 'video_size_limit']) as number | undefined;
    const maxVideoDuration = getState().instance.configuration.getIn(['media_attachments', 'video_duration_limit']) as number | undefined;

    const isImage = file.type.match(/image.*/);
    const isVideo = file.type.match(/video.*/);
    const videoDurationInSeconds = (isVideo && maxVideoDuration) ? await getVideoDuration(file) : 0;

    if (isImage && maxImageSize && (file.size > maxImageSize)) {
      const limit = formatBytes(maxImageSize);
      const message = intl.formatMessage(messages.exceededImageSizeLimit, { limit });
      toast.error(message);
      onFail(true);
      return;
    } else if (isVideo && maxVideoSize && (file.size > maxVideoSize)) {
      const limit = formatBytes(maxVideoSize);
      const message = intl.formatMessage(messages.exceededVideoSizeLimit, { limit });
      toast.error(message);
      onFail(true);
      return;
    } else if (isVideo && maxVideoDuration && (videoDurationInSeconds > maxVideoDuration)) {
      const message = intl.formatMessage(messages.exceededVideoDurationLimit, { limit: maxVideoDuration });
      toast.error(message);
      onFail(true);
      return;
    }

    // FIXME: Don't define const in loop
    resizeImage(file).then(resized => {
      const data = new FormData();
      data.append('file', resized);
      // Account for disparity in size of original image and resized data
      changeTotal(resized.size - file.size);

      return dispatch(uploadMedia(data, onProgress))
        .then(({ status, data }) => {
          // If server-side processing of the media attachment has not completed yet,
          // poll the server until it is, before showing the media attachment as uploaded
          if (status === 200) {
            onSuccess(data);
          } else if (status === 202) {
            const poll = () => {
              dispatch(fetchMedia(data.id)).then(({ status, data }) => {
                if (status === 200) {
                  onSuccess(data);
                } else if (status === 206) {
                  setTimeout(() => poll(), 1000);
                }
              }).catch(error => onFail(error));
            };

            poll();
          }
        });
    }).catch(error => onFail(error));
  };

export {
  fetchMedia,
  updateMedia,
  uploadMediaV1,
  uploadMediaV2,
  uploadMedia,
  uploadFile,
};