--
-- Copyright (C) 2013 Glyptodon LLC
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-- THE SOFTWARE.
--

--
-- Table of connection groups. Each connection group has a name.
--

CREATE TABLE `guacamole_connection_group` (

  `connection_group_id`   int(11)      NOT NULL AUTO_INCREMENT,
  `parent_id`             int(11),
  `connection_group_name` varchar(128) NOT NULL,
  `type`                  enum('ORGANIZATIONAL',
                               'BALANCING') NOT NULL DEFAULT 'ORGANIZATIONAL',

  PRIMARY KEY (`connection_group_id`),
  UNIQUE KEY `connection_group_name_parent` (`connection_group_name`, `parent_id`),

  CONSTRAINT `guacamole_connection_group_ibfk_1`
    FOREIGN KEY (`parent_id`)
    REFERENCES `guacamole_connection_group` (`connection_group_id`) ON DELETE CASCADE

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

--
-- Table of connections. Each connection has a name, protocol, and
-- associated set of parameters.
-- A connection may belong to a connection group.
--

CREATE TABLE `guacamole_connection` (

  `connection_id`       int(11)      NOT NULL AUTO_INCREMENT,
  `connection_name`     varchar(128) NOT NULL,
  `parent_id`           int(11),
  `protocol`            varchar(32)  NOT NULL,
  
  PRIMARY KEY (`connection_id`),
  UNIQUE KEY `connection_name_parent` (`connection_name`, `parent_id`),

  CONSTRAINT `guacamole_connection_ibfk_1`
    FOREIGN KEY (`parent_id`)
    REFERENCES `guacamole_connection_group` (`connection_group_id`) ON DELETE CASCADE

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

--
-- Table of users. Each user has a unique username and a hashed password
-- with corresponding salt.
--

CREATE TABLE `guacamole_user` (

  `user_id`       int(11)      NOT NULL AUTO_INCREMENT,
  `username`      varchar(128) NOT NULL,
  `password_hash` binary(32)   NOT NULL,
  `password_salt` binary(32)   NOT NULL,

  PRIMARY KEY (`user_id`),
  UNIQUE KEY `username` (`username`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

--
-- Table of connection parameters. Each parameter is simply a name/value pair
-- associated with a connection.
--

CREATE TABLE `guacamole_connection_parameter` (

  `connection_id`   int(11)       NOT NULL,
  `parameter_name`  varchar(128)  NOT NULL,
  `parameter_value` varchar(4096) NOT NULL,

  PRIMARY KEY (`connection_id`,`parameter_name`),

  CONSTRAINT `guacamole_connection_parameter_ibfk_1`
    FOREIGN KEY (`connection_id`)
    REFERENCES `guacamole_connection` (`connection_id`) ON DELETE CASCADE

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

--
-- Table of connection permissions. Each connection permission grants a user
-- specific access to a connection.
--

CREATE TABLE `guacamole_connection_permission` (

  `user_id`       int(11) NOT NULL,
  `connection_id` int(11) NOT NULL,
  `permission`    enum('READ',
                       'UPDATE',
                       'DELETE',
                       'ADMINISTER') NOT NULL,

  PRIMARY KEY (`user_id`,`connection_id`,`permission`),

  CONSTRAINT `guacamole_connection_permission_ibfk_1`
    FOREIGN KEY (`connection_id`)
    REFERENCES `guacamole_connection` (`connection_id`) ON DELETE CASCADE,

  CONSTRAINT `guacamole_connection_permission_ibfk_2`
    FOREIGN KEY (`user_id`)
    REFERENCES `guacamole_user` (`user_id`) ON DELETE CASCADE

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

--
-- Table of connection group permissions. Each group permission grants a user
-- specific access to a connection group.
--

CREATE TABLE `guacamole_connection_group_permission` (

  `user_id`             int(11) NOT NULL,
  `connection_group_id` int(11) NOT NULL,
  `permission`          enum('READ',
                             'UPDATE',
                             'DELETE',
                             'ADMINISTER') NOT NULL,

  PRIMARY KEY (`user_id`,`connection_group_id`,`permission`),

  CONSTRAINT `guacamole_connection_group_permission_ibfk_1`
    FOREIGN KEY (`connection_group_id`)
    REFERENCES `guacamole_connection_group` (`connection_group_id`) ON DELETE CASCADE,

  CONSTRAINT `guacamole_connection_group_permission_ibfk_2`
    FOREIGN KEY (`user_id`)
    REFERENCES `guacamole_user` (`user_id`) ON DELETE CASCADE

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

--
-- Table of system permissions. Each system permission grants a user a
-- system-level privilege of some kind.
--

CREATE TABLE `guacamole_system_permission` (

  `user_id`    int(11) NOT NULL,
  `permission` enum('CREATE_CONNECTION',
		    'CREATE_CONNECTION_GROUP',
                    'CREATE_USER',
                    'ADMINISTER') NOT NULL,

  PRIMARY KEY (`user_id`,`permission`),

  CONSTRAINT `guacamole_system_permission_ibfk_1`
    FOREIGN KEY (`user_id`)
    REFERENCES `guacamole_user` (`user_id`) ON DELETE CASCADE

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

--
-- Table of user permissions. Each user permission grants a user access to
-- another user (the "affected" user) for a specific type of operation.
--

CREATE TABLE `guacamole_user_permission` (

  `user_id`          int(11) NOT NULL,
  `affected_user_id` int(11) NOT NULL,
  `permission`       enum('READ',
                          'UPDATE',
                          'DELETE',
                          'ADMINISTER') NOT NULL,

  PRIMARY KEY (`user_id`,`affected_user_id`,`permission`),

  CONSTRAINT `guacamole_user_permission_ibfk_1`
    FOREIGN KEY (`affected_user_id`)
    REFERENCES `guacamole_user` (`user_id`) ON DELETE CASCADE,

  CONSTRAINT `guacamole_user_permission_ibfk_2`
    FOREIGN KEY (`user_id`)
    REFERENCES `guacamole_user` (`user_id`) ON DELETE CASCADE

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

--
-- Table of connection history records. Each record defines a specific user's
-- session, including the connection used, the start time, and the end time
-- (if any).
--

CREATE TABLE `guacamole_connection_history` (

  `history_id`    int(11)  NOT NULL AUTO_INCREMENT,
  `user_id`       int(11)  NOT NULL,
  `connection_id` int(11)  NOT NULL,
  `start_date`    datetime NOT NULL,
  `end_date`      datetime DEFAULT NULL,

  PRIMARY KEY (`history_id`),
  KEY `user_id` (`user_id`),
  KEY `connection_id` (`connection_id`),

  CONSTRAINT `guacamole_connection_history_ibfk_1`
    FOREIGN KEY (`user_id`)
    REFERENCES `guacamole_user` (`user_id`) ON DELETE CASCADE,

  CONSTRAINT `guacamole_connection_history_ibfk_2`
    FOREIGN KEY (`connection_id`)
    REFERENCES `guacamole_connection` (`connection_id`) ON DELETE CASCADE

) ENGINE=InnoDB DEFAULT CHARSET=utf8;