//
//  itemInfo.h FILE
//  InventoryCode Assignment 2

#ifndef itemInfo_h
#define itemInfo_h
#include <iostream>
#include <string>
#include <iomanip>
#include <array>
#include <cmath>

using namespace std;

class item{
private:
    //made 4 private variables that hold
    string food;
    string foodID;
    float retailVal;
    int quantity;
public:


    //made mutators and accessors of all the private variables so i can set and retrieve that data
    void setfood(string f){
        food=f;
    }

    string getfood(){
        return food;
    }

    void setfoodID(string fID){
        foodID = fID;
    }
    string getfoodID(){
        return foodID;
    }
    void setretailVal(float rV){
           retailVal = rV;
       }

    float getretailVal(){
        return retailVal;
    }

    void setquantity(int q){
          quantity =q;
      }

    int getquantity(){
        return quantity;
    }


  item();
  item(string f, string ID, float v, int q);

};
//my default constructer so that the computer will assign these values if nothing is retrieved
item::item() {
     food = "Unnamed";
     foodID= "0";
     retailVal = 0;
     quantity = 0;
   }
 //my overloaded constructor which allows item1,item2, item3, item4 to take in these 4 attributes in main
item::item(string f, string ID, float v, int q) {
     food = f;
     foodID= ID;
     retailVal = v;
     quantity = q;
}



void BuyItems(item* current);
void DiscountItems(item* current);
void displayStock(item* current);

#endif /* itemInfo_h */

//=================================================================================================

//
//  functions.h FILE
//


#ifndef functions_h
#define functions_h
#include "itemInfo.h"

//item*current points the info within the function each time its updated in the function
//buyItems completes a transaction
void BuyItems(item* current){
     int choice;
     cout<< "====Menu===="<<endl;
     cout << "Enter the item you would like to purchase"<<endl;
     for (int x=0; x<4; x++) {
     cout << x +1 << ". " << current[x].getquantity() << " " << current[x].getfood() << " left in stock at $" <<
     current[x].getretailVal() << " item ID " << current[x].getfoodID() << endl;
    }
        cin >> choice;
        int item1;
           //  runs a do while wwhich runs til the user gets an amount that is below the set quantity
          do {
          cout <<"How many would you like to buy?"<<endl;
          cin >> item1;

              if (item1 > current[choice - 1].getquantity()) {
                   cout << "Not enough "<<current[choice - 1].getfood()<< " in stock ("<<current[choice - 1].getquantity()
                   <<") total stock"<<endl;

              }else{
                  //this multiplies the quantity with the retail value
                  //then prints the amount sold and how many
                   double total = (current[choice - 1].getretailVal() * (item1));
                   cout << "SOLD "<<item1<<" "<<current[choice - 1].getfood()<<" for $"<<total<<endl;
                   current[choice-1].setquantity(current[choice - 1].getquantity() - item1);
                   break;
              }
          } while (item1 > current[choice - 1].getquantity()) ;


    }

//this discounts the items after two items have been sold
void DiscountItems(item* current){
     cout << endl;
     cout <<"2 items sold!"<<endl;
     cout << "Sale starting!"<<endl;

     cout << "Would you like to enter a discount %?"<<endl;
     float discount;
     cin >> discount;
    //runs a for loop to calculate the discount with the retail value
    for (int x = 0; x<4; x++){
    cout <<fixed<<showpoint<<setprecision(2);
    //the static cast ensures the percentage wont be rounded but exact
    //i multiply the discount inputted then subtract thar from the current retail value for each item in inventory
    //then finally it subtracts the result from retail value
    float percentage = static_cast<float>(current[x].getretailVal()) * discount;
    float result = current[x].getretailVal() - percentage;
    cout << "Price for "<<current[x].getfood()<<" on sale for $"<<result<<endl;
    current[x].setretailVal(current[x].getretailVal()- result);
    }

}
//this prints my stock that gets updated over time wihtin main and prints my values for the 4 attributes
void displayStock(item* current) {
    for (int x =0; x<4; x++) {
    cout << current[x].getquantity() << " " << current[x].getfood() << " left in stock at $" << current[x].getretailVal() <<
    " item ID " << current[x].getfoodID() << endl;
    }
}
#endif /* functions_h */

//====================================================================================

//
//  main.cpp FILE
//  InventoryCode



#include "functions.h"


int main(){
    cout << "==Welcome to the inventory helper=="<<endl;
    cout << "-store hours will begin shortly"<<endl;
    cout << "Please update your inventory..."<<endl;
    cout<<endl;

  //initializing to default values
    char letter;
    string food = "No name";
    string foodID = "0000";
    float retailVal = 0.00;
    int quantity= 0;
   //made 4 separate objects of item with 4 attributes that are contained within my overloaded constructor
    item item1(food, foodID, retailVal, quantity);
    item item2(food, foodID, retailVal, quantity);
    item item3(food, foodID, retailVal, quantity);
    item item4(food, foodID, retailVal, quantity);
    //set my inventory [4] to the 4 objects
    item inventory[4] = { item1, item2, item3, item4 };

    //gets the input from user for the store and sets that info inside my array
     for (int x = 0; x < 4; x++) {
     cout << "Enter item " << x + 1 << " to add to inventory:" << endl;
     cin >> food;
     cout << "Enter product manufacturer's id:" << endl;
     cin >> foodID;
     cout << "Enter the retail value:" << endl;
     cin >> retailVal;
     cout << "Enter the quantity available:" << endl;
     cin >> quantity;
     inventory[x].setfood(food);
     inventory[x].setfoodID(foodID);
     cout<<fixed<<setprecision(2);
     inventory[x].setretailVal(retailVal);
      inventory[x].setquantity(quantity);
     cout << endl;
     }


    displayStock(inventory);

    cout <<endl;

    cout<< "Business hours are now open"<<endl;



   //this wile loop runs as long as the user does not select 'n' for no to another transaction
    do {
    cout << "Would you like to perform a transaction? (y/n)"<<endl;
    cin >> letter;
        //if the user selects 'n' then the 4 items will be displayed and the program will end
    if (letter == 'n' || letter == 'N') {
        break;
    }

    cout <<endl;
    BuyItems(inventory);
    cout << "Would you like to perform another transaction? (y/n)"<<endl;
    cin >> letter;
    if (letter == 'n' || letter == 'N') {
        break;
    }

    BuyItems(inventory);

    cout << "Would you like to perform another transaction? (y/n)"<<endl;
    cin >> letter;
    if (letter == 'n' || letter == 'N') {
       break;
       }

    DiscountItems(inventory);

    } while (letter != 'n' || letter !='N');


//WHILE LOOP ENDS HERE
    //
    cout << endl;
    cout <<endl;
    cout << "Closing Shop -- invenetory left"<<endl;
    cout<<endl;
    displayStock(inventory);

    return 0;
}