// CS U2510 Fall 2011
// Lab 4: Employees.java

/*
 *                      +-----------+
 *                      |    Emp    |<----------------------+
 *                      +-----+-----+                       |
 *                           / \                            |
 *                          +---+                           |
 *                            |                             |
 *            +---------------+-----------------+           |
 *            |                                 |           |
 *    +-------+-------+                  +------+--------+  |
 *    |    Worker     |                  |    Boss       |  |
 *    +---------------+                  +---------------+  |
 *    | String name   |                  | String name   |  |
 *    | int    tasks  |                  | String unit   |  |
 *    +---------------+                  | int    tasks  |  |
 *                              +--------| ILoE   peons  |  |
 *                              |        +---------------+  |
 *                              V                           |
 *                        +--------------+                  |
 *                        |     ILoE     |<-----------------+--+
 *                        +------+-------+                  |  |
 *                              / \                         |  |
 *                             +---+                        |  |
 *                               |                          |  |
 *                +--------------+--------------+           |  |
 *                |                             |           |  |
 *        +-------+------+              +-------+-------+   |  |
 *        |     MtLoE    |              |    ConsLoE    |   |  |
 *        +--------------+              +---------------+   |  |
 *        +--------------+              | Emp  first    |---+  |
 *                                      | ILoE rest     |------+
 *                                      +---------------+
 */

// Represents an Employee of a company
interface Emp{
}

// Represents an employee without subordinates
class Worker implements Emp{
    String name;
    int tasks;

    Worker(String name, int tasks){
        this.name = name;
        this.tasks = tasks;
    }

    /* Template:
     *   Fields:
     *     ... this.name ...   -- String
     *     ... this.tasks ...  -- int
     *
     *    Methods:
     */
}

// Represents an boss in charge of a unit, with a list of subordinates
class Boss implements Emp {
    String name;
    String unit;
    int tasks;
    ILoE peons;

    Boss(String name, String unit, int tasks, ILoE peons){
        this.name = name;
        this.unit = unit;
        this.tasks = tasks;
        this.peons = peons;
    }

    /* Template:
     *    Fields:
     *      ... this.name ...    -- String
     *      ... this.unit ...    -- String
     *      ... this.tasks ...   -- int
     *      ... this.peons ...   -- ILoE
     *
     *    Methods:
     *
     *    Methods for Fields:
     */
}

// Represents a list of employees
interface ILoE{
}

// Represents an empty list of employees
class MtLoE implements ILoE{
    MtLoE(){}
}

// Represents a list of employees
class ConsLoE implements ILoE {
    Emp first;
    ILoE rest;

    ConsLoE(Emp first, ILoE rest){
        this.first = first;
        this.rest = rest;
    }

    /* Template:
     *   Fields:
     *     ... this.first ...   -- Emp
     *     ... this.rest ...    -- ILoE
     *
     *   Methods:
     *
     *   Methods for Fields:
     */

}

// Examples/tests for the Employee hierarchy
class EmployeeExamples{
    EmployeeExamples(){ }
    
    Emp wkA = new Worker("Allen",3);
    Emp wkB = new Worker("Bob",5);
    Emp wkC = new Worker("Carrie",6);
    Emp wkD = new Worker("Damion",4);
    Emp wkE = new Worker("Ersela",5);
    Emp wkF = new Worker("Frank",7);

    ILoE mtlist = new MtLoE();

    ILoE grpAlist = new ConsLoE(this.wkA, this.mtlist);

    Emp mike = new Boss("Mike", "Group A", 10, this.grpAlist);
    ILoE secAlist = new ConsLoE(this.mike,
                          new ConsLoE(this.wkB,
                                new ConsLoE(this.wkE,this.mtlist)));

    ILoE secBlist = new ConsLoE(this.wkC,
                          new ConsLoE(this.wkD, this.mtlist));
    ILoE secClist = new ConsLoE(this.wkE, this.mtlist);

    Emp jack = new Boss("Jack", "Section A", 25, this.secAlist);
    Emp jenn = new Boss("Jenn", "Section B", 15, this.secBlist);
    ILoE operList = new ConsLoE(this.jack,
                          new ConsLoE(this.jenn, this.mtlist));

    Emp pat  = new Boss("Pat",  "Section C", 20, this.secClist);
    ILoE financeList =  new ConsLoE(this.wkF,
                              new ConsLoE(this.pat, this.mtlist));

    Emp anne = new Boss("Anne", "Finance", 20, this.financeList);
    Emp dave = new Boss("Dave", "Operations", 70, this.operList);
    ILoE ceoList = new ConsLoE(this.dave,
                         new ConsLoE(this.anne,this.mtlist));

    Emp meg  = new Boss("Meg","CEO", 100, this.ceoList);
}