/* Author:  Susan Mitchell */
/* File  :  Inventory.h    */

#ifndef INVENTORY_H
#define INVENTORY_H

#include "Cd.h"

typedef struct inode {
    Cd* info;
    struct inode* next;
} CdNode;

void initializeList ();

CdNode* createNode (Cd* aCd);

void destroyNode (CdNode* aNode);

void emptyList ();


/*  Inserts a node into the list according to the date it was  */
/*  received by the store, from most recent to oldest.         */
/*                                                             */
/*  Parameters:                                                */
/*    aCd = pointer to a cd structure                          */

void insertNode (Cd* aCd);


/*  Deletes all nodes that contain cds that are out of stock   */


void deleteOutOfStock();

/*  Searches the list for a cd based on artist and title.      */
/*                                                             */
/*  Returns:                                                   */
/*     NULL pointer if not found                               */
/*     Otherwise, pointer to the node                          */
/*                                                             */
/*  Parameters:                                                */
/*     artist = cd artist to be located                        */
/*     title = cd title to be located                          */

CdNode* findNode(char* artist, char* title);


/*  Computes the number of nodes in the list                   */
/*                                                             */
/*  Returns:                                                   */
/*     Number of nodes in the list                             */

int computeNumNodes();


/*  Computes the monetary value of the entire stock of cds     */
/*                                                             */
/*  Returns:                                                   */
/*     Monetary value of entire stock of cds                   */

float computeValue();


void printList();


/*  Prints the information for all cds that are out of stock   */

void printOutOfStock();


#endif