/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jclouds.enterprisechef;

import java.util.Set;

import javax.inject.Named;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.MediaType;

import org.jclouds.Constants;
import org.jclouds.Fallbacks.FalseOnNotFoundOr404;
import org.jclouds.Fallbacks.NullOnNotFoundOr404;
import org.jclouds.chef.ChefApi;
import org.jclouds.chef.filters.SignedHeaderAuth;
import org.jclouds.chef.functions.ParseKeySetFromJson;
import org.jclouds.enterprisechef.binders.BindGroupNameToJsonPayload;
import org.jclouds.enterprisechef.binders.BindGroupToUpdateRequestJsonPayload;
import org.jclouds.enterprisechef.binders.GroupName;
import org.jclouds.enterprisechef.domain.Group;
import org.jclouds.enterprisechef.domain.User;
import org.jclouds.rest.annotations.BinderParam;
import org.jclouds.rest.annotations.Fallback;
import org.jclouds.rest.annotations.Headers;
import org.jclouds.rest.annotations.ParamParser;
import org.jclouds.rest.annotations.RequestFilters;
import org.jclouds.rest.annotations.ResponseParser;

/**
 * Provides synchronous access to the Enterprise Chef Api.
 * 
 * @author Ignasi Barrera
 */
@RequestFilters(SignedHeaderAuth.class)
@Consumes(MediaType.APPLICATION_JSON)
@Headers(keys = "X-Chef-Version", values = "{" + Constants.PROPERTY_API_VERSION + "}")
public interface EnterpriseChefApi extends ChefApi
{

    /**
     * Check if there exists a node with the given name.
     * 
     * @return <code>true</code> if the specified node name exists.
     */
    @Override
    // Use get instead of HEAD
    @Named("node:exists")
    @GET
    @Path("/nodes/{nodename}")
    @Fallback(FalseOnNotFoundOr404.class)
    boolean nodeExists(@PathParam("nodename") String nodename);

    /**
     * Retrieves an existing user.
     * 
     * @param name The name of the user to get.
     * @return The details of the user or <code>null</code> if not found.
     */
    @Named("user:get")
    @GET
    @Path("/users/{name}")
    @Fallback(NullOnNotFoundOr404.class)
    User getUser(@PathParam("name") String name);

    /**
     * List all existing groups.
     * 
     * @return The list of groups.
     */
    @Named("group:list")
    @GET
    @Path("/groups")
    @ResponseParser(ParseKeySetFromJson.class)
    Set<String> listGroups();

    /**
     * Retrieves an existing group.
     * 
     * @param name The name of the group to get.
     * @return The details of the group or <code>null</code> if not found.
     */
    @Named("group:get")
    @GET
    @Path("/groups/{name}")
    @Fallback(NullOnNotFoundOr404.class)
    Group getGroup(@PathParam("name") String name);

    /**
     * Creates a new group.
     * 
     * @param name The name of the group to create.
     */
    @Named("group:create")
    @POST
    @Path("/groups")
    void createGroup(@BinderParam(BindGroupNameToJsonPayload.class) String name);

    /**
     * Updates a group.
     * <p>
     * This method can be used to add actors (clients, groups) to the group.
     * 
     * @param group The group with the updated information.
     */
    @Named("group:update")
    @PUT
    @Path("/groups/{name}")
    void updateGroup(
        @PathParam("name") @ParamParser(GroupName.class) @BinderParam(BindGroupToUpdateRequestJsonPayload.class) Group group);

    /**
     * Deletes a group.
     * 
     * @param name The name of the group to delete.
     */
    @Named("group:delete")
    @DELETE
    @Path("/groups/{name}")
    void deleteGroup(@PathParam("name") String name);

}