import BookApi from "../../api/book";

const
    FETCHING_BOOKS = "FETCHING_BOOKS",
    FETCHING_BOOKS_SUCCESS = "FETCHING_BOOKS_SUCCESS",
    FETCHING_BOOKS_ERROR = "FETCHING_BOOKS_ERROR",
    SETTING_SEARCH_TERM = "SETTING_SEARCH_TERM"
;

export default {
    namespaced: true,
    state: {
        isLoading: false,
        error: null,
        books: [],
        searchTitle: null
    },
    getters: {
        isLoading(state) {
            return state.isLoading;
        },
        hasError(state) {
            return state.error !== null;
        },
        error(state) {
            return state.error;
        },
        hasBooks(state) {
            return state.books.length > 0;
        },
        books(state) {
            return state.books;
        },
        isSearching(state) {
            return !!state.searchTitle;
        }
    },
    mutations: {
        [SETTING_SEARCH_TERM](state, searchTitle) {
            state.searchTitle = searchTitle;
        },
        [FETCHING_BOOKS](state) {
            state.isLoading = true;
            state.error = null;
            state.books = [];
        },
        [FETCHING_BOOKS_SUCCESS](state, books) {
            state.isLoading = false;
            state.error = null;
            state.books = books;
        },
        [FETCHING_BOOKS_ERROR](state, error) {
            state.isLoading = false;
            state.error = error;
            state.books = [];
        }
    },
    actions: {
        async findAll({commit, state}, searchTitle) {
            commit(FETCHING_BOOKS);
            try {
                commit(SETTING_SEARCH_TERM, searchTitle);
                let response = await BookApi.booksFetch(state.searchTitle);
                commit(FETCHING_BOOKS_SUCCESS, response.data);
                return response.data;
            } catch (error) {
                commit(FETCHING_BOOKS_ERROR, error);
                return null;
            }
        }
    }
};