<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

<!--
    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.
-->

<mapper namespace="org.apache.guacamole.auth.jdbc.user.UserParentUserGroupMapper" >

    <!-- Select the names of all parent user groups -->
    <select id="selectChildIdentifiers" resultType="string">
        SELECT name
        FROM guacamole_user_group_member
        JOIN guacamole_user_group ON guacamole_user_group_member.user_group_id = guacamole_user_group.user_group_id
        JOIN guacamole_entity ON guacamole_entity.entity_id = guacamole_user_group.entity_id
        WHERE
            guacamole_user_group_member.member_entity_id = #{parent.entityID,jdbcType=INTEGER}
            AND guacamole_entity.type = 'USER_GROUP'::guacamole_entity_type
    </select>

    <!-- Select the names of all readable parent user groups -->
    <select id="selectReadableChildIdentifiers" resultType="string">
        SELECT guacamole_entity.name
        FROM guacamole_user_group_member
        JOIN guacamole_user_group ON guacamole_user_group_member.user_group_id = guacamole_user_group.user_group_id
        JOIN guacamole_entity ON guacamole_entity.entity_id = guacamole_user_group.entity_id
        WHERE
            guacamole_user_group.user_group_id IN (
                <include refid="org.apache.guacamole.auth.jdbc.usergroup.UserGroupMapper.getReadableIDs">
                    <property name="entityID" value="#{user.entityID,jdbcType=INTEGER}"/>
                    <property name="groups"   value="effectiveGroups"/>
                </include>
            )
            AND guacamole_user_group_member.member_entity_id = #{parent.entityID,jdbcType=INTEGER}
            AND guacamole_entity.type = 'USER_GROUP'::guacamole_entity_type
    </select>

    <!-- Delete parent groups by name -->
    <delete id="delete">
        DELETE FROM guacamole_user_group_member
        USING guacamole_user_group, guacamole_entity
        WHERE
            member_entity_id = #{parent.entityID,jdbcType=INTEGER}
            AND guacamole_user_group.user_group_id = guacamole_user_group_member.user_group_id
            AND guacamole_entity.entity_id = guacamole_user_group.entity_id
            AND guacamole_entity.type = 'USER_GROUP'::guacamole_entity_type
            AND guacamole_entity.name IN
                <foreach collection="children" item="identifier"
                         open="(" separator="," close=")">
                    #{identifier,jdbcType=VARCHAR}
                </foreach>
    </delete>

    <!-- Insert parent groups by name -->
    <insert id="insert">
        INSERT INTO guacamole_user_group_member (
            user_group_id,
            member_entity_id
        )
        SELECT DISTINCT
            guacamole_user_group.user_group_id,
            #{parent.entityID,jdbcType=INTEGER}
        FROM guacamole_user_group
        JOIN guacamole_entity ON guacamole_user_group.entity_id = guacamole_entity.entity_id
        WHERE
            guacamole_entity.name IN
                <foreach collection="children" item="identifier"
                         open="(" separator="," close=")">
                    #{identifier,jdbcType=VARCHAR}
                </foreach>
            AND guacamole_entity.type = 'USER_GROUP'::guacamole_entity_type
            AND guacamole_user_group.user_group_id NOT IN (
                SELECT guacamole_user_group_member.user_group_id
                FROM guacamole_user_group_member
                WHERE guacamole_user_group_member.member_entity_id = #{parent.entityID,jdbcType=INTEGER}
            )
    </insert>

</mapper>