AutocompleteApi.java

/*
 * This file is part of anycook. The new internet cookbook
 * Copyright (C) 2014 Jan Graßegger
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see [http://www.gnu.org/licenses/].
 */

package de.anycook.api;

import de.anycook.api.util.MediaType;
import de.anycook.autocomplete.Autocomplete;
import de.anycook.recipe.ingredient.Ingredient;
import de.anycook.recipe.tag.Tag;
import de.anycook.user.User;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.sql.SQLException;
import java.util.HashSet;
import java.util.List;

import javax.ws.rs.Consumes;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Response;


/**
 * Handles all autocomplete calls
 *
 * @author Jan Graßegger <jan@anycook.de>
 */
@Path("autocomplete")
public class AutocompleteApi {

    private final Logger logger = LogManager.getLogger(getClass());

    /**
     * Completion for all categories
     */
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    @Consumes(MediaType.APPLICATION_JSON)
    public Autocomplete.Result autocomplete(@QueryParam("query") String query,
                                            @QueryParam("excludedCategory") String excludedCategory,
                                            @QueryParam("excludedIngredients") StringSet excludedIngredients,
                                            @QueryParam("excludedTags") StringSet excludedTags,
                                            @QueryParam("excludedUsers") IntSet excludedUsers,
                                            @QueryParam("maxResults") @DefaultValue("10") int maxResults) {

        if (query == null) {
            throw new WebApplicationException(Response.Status.BAD_REQUEST);
        }
        try {
            return Autocomplete
                    .autoCompleteAll(query, excludedCategory, excludedIngredients, excludedTags,
                                     excludedUsers, maxResults);
        } catch (SQLException e) {
            logger.error(e);
            throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
        }
    }

    @GET
    @Path("ingredient")
    @Produces(MediaType.APPLICATION_JSON)
    public List<Ingredient> autocompleteIngredient(@QueryParam("query") String query,
                                                   @QueryParam("exclude") StringSet exclude,
                                                   @QueryParam("maxResults") @DefaultValue("10") int maxResults) {
        if (query == null) {
            throw new WebApplicationException(Response.Status.BAD_REQUEST);
        }
        try {
            return Autocomplete.autocompleteIngredient(query, maxResults, exclude);
        } catch (SQLException e) {
            logger.error(e);
            throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
        }
    }

    @GET
    @Path("tag")
    @Produces(MediaType.APPLICATION_JSON)
    public List<Tag> autocompleteTags(@QueryParam("query") String query,
                                      @QueryParam("exclude") StringSet exclude,
                                      @QueryParam("maxResults") @DefaultValue("10") int maxResults) {
        if (query == null) {
            throw new WebApplicationException(Response.Status.BAD_REQUEST);
        }
        try {
            return Autocomplete.autocompleteTag(query, maxResults, exclude);
        } catch (SQLException e) {
            logger.error(e);
            throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
        }
    }

    @GET
    @Path("user")
    @Produces(MediaType.APPLICATION_JSON)
    public List<User> autoCompleteUser(@QueryParam("query") String query,
                                       @QueryParam("exclude") IntSet exclude,
                                       @QueryParam("maxResults") @DefaultValue("10") int maxResults) {
        if (query == null) {
            throw new WebApplicationException(Response.Status.BAD_REQUEST);
        }

        try {
            return Autocomplete.autocompleteUsers(query, maxResults, exclude);
        } catch (SQLException e) {
            logger.error(e);
            throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
        }
    }

    public static class IntSet extends HashSet<Integer> {

        private static final long serialVersionUID = 1L;

        public IntSet(String in) {
            super();
            if (in != null) {
                for (String split : in.split(",")) {
                    add(Integer.parseInt(split));
                }
            }
        }
    }

    public static class StringSet extends HashSet<String> {

        private static final long serialVersionUID = 1L;

        public StringSet(String in) {
            super();
            if (in != null) {
                for (String split : in.split(",")) {
                    add(split);
                }
            }
        }
    }


}