import { produce } from "immer";

import { formatSubtitle, formatMovie } from "./utils";

const defaultState = {
  loading: false,
  movie: {},
};

export default (state = defaultState, action) =>
  produce(state, (draft) => {
    switch (action.type) {
      case "MOVIE_FETCH_DETAILS_PENDING":
        draft.loading = true;
        break;

      case "MOVIE_FETCH_DETAILS_FULFILLED": {
        draft.movie = formatMovie(action.payload.response.data);
        draft.loading = false;
        break;
      }

      case "MOVIE_GET_DETAILS_PENDING": {
        let imdbId = action.payload.main.imdbId;
        if (draft.movie.imdb_id !== imdbId) {
          break;
        }

        draft.movie.fetchingDetails = true;
        break;
      }

      case "MOVIE_GET_DETAILS_FULFILLED": {
        let imdbId = action.payload.main.imdbId;
        if (draft.movie.imdb_id !== imdbId) {
          break;
        }

        draft.movie = formatMovie(action.payload.response.data);
        break;
      }

      case "MOVIE_SUBTITLES_UPDATE_PENDING": {
        let imdbId = action.payload.main.imdbId;
        if (draft.movie.imdb_id !== imdbId) {
          break;
        }

        let lang = action.payload.main.lang;
        draft.movie.fetchingSubtitles.push(lang);
        if (draft.movie.subtitles.get(lang)) {
          draft.movie.subtitles.get(lang).searching = true;
        }
        break;
      }

      case "MOVIE_SUBTITLES_UPDATE_FULFILLED": {
        let imdbId = action.payload.main.imdbId;
        if (draft.movie.imdb_id !== imdbId) {
          break;
        }

        let lang = action.payload.main.lang;
        let data = action.payload.response.data;
        draft.movie.fetchingSubtitles = draft.movie.fetchingSubtitles.filter(
          (l) => l != lang
        );
        if (data) {
          draft.movie.subtitles.set(lang, formatSubtitle(data));
        }
        break;
      }

      default:
        return draft;
    }
  });