TagApi.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.db.mysql.DBTag;
import de.anycook.recipe.Recipes;
import de.anycook.recipe.tag.Tag;

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

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

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


@Path("tag")
public class TagApi {

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

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public List<Tag> getAll() {
        try {
            return Tag.getAll();
        } catch (SQLException e) {
            logger.error(e, e);
            throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * Number of tags
     */
    @GET
    @Path("number")
    @Produces(MediaType.APPLICATION_JSON)
    public int getNum() {
        try {
            return Tag.getTotal();
        } catch (SQLException e) {
            logger.error(e, e);
            throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * Tags ordered by popularity.
     *
     * @param recipe If set tags of this recipe are excluded
     * @return Map of tags ordered by popularity with number of recipes
     */
    @GET
    @Path("popular")
    @Produces(MediaType.APPLICATION_JSON)
    public List<Tag> getPopularTags(@QueryParam("recipe") String recipe) {
        try {
            if (recipe == null) {
                return Recipes.getPopularTags();
            }
            return Recipes.getPopularTags(recipe);
        } catch (SQLException e) {
            logger.error(e, e);
            throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
        }
    }

    @GET
    @Path("{tagName}")
    @Produces(MediaType.APPLICATION_JSON)
    public Tag getTag(@PathParam("tagName") String tagName) {
        try {
            return Tag.init(tagName);
        } catch (SQLException e) {
            logger.error(e, e);
            throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
        } catch (DBTag.TagNotFoundException e) {
            logger.warn(e);
            throw new WebApplicationException(Response.Status.NOT_FOUND);
        }
    }
}