NUWA 2

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define ROWS 100
#define SIZE_OF_STIRNG 100

int main();
void getUserChoice(int*);
void addStockEntry();
void purchaseStocks();
void sellStocks();
void displayStocks();
void displaySales();
void displayPurchases();
void clearWindow();
void evaluateChoice(int);
void mainMenu();
void generateTestData();
void columnTables();


int itemCodeArray[ROWS];
char itemNameArray[ROWS][SIZE_OF_STIRNG];
float unitPriceArray[ROWS];
int discountLevelsArray[ROWS];          //discount level is the number of items of he product the customer has to buy to be eligible to receive the discount
float discountRateArray[ROWS];
int currentStockArray[ROWS];

int purchaseCodeArray[ROWS];
int purchaseItemCodeArray[ROWS];
int purchaseAmounts[ROWS];
float purchaseNetTotalArray[ROWS];

int salesCodeArray[ROWS];
int salesItemCodeArray[ROWS];
int salesAmounts[ROWS];
float salesNetTotalArray[ROWS];
float salesSubTotalArray[ROWS];

int lastItemCode = 0;
int lastPurchaseCode = 0;
int lastSalesCode = 0;

void generateTestData(){
    char gItemNames[3][SIZE_OF_STIRNG] = {"Apples","Pineapples","Oranges"};
    float gUnitPrices[3] = {50,100,40};
    float gDiscLevels[3] = {150,200,300};
    float gDiscRates[3] = {20,25,10};
    int gCurrStocks[3] = {10,20,50};
    for(int i = 0;i<3;i++){
        itemCodeArray[i] = i+1;
        strcpy(itemNameArray[i],gItemNames[i]);
        unitPriceArray[i] = gUnitPrices[i];
        discountLevelsArray[i] = gDiscLevels[i];
        discountRateArray[i] = gDiscRates[i];
        currentStockArray[i] = gCurrStocks[i];
        lastItemCode = i+1;
    }


    int gPurchItemCodes[3] = {1,2,3};
    int gPurchAmounts[3] = {5,10,15};
    for(int i = 0;i<3;i++){
        purchaseCodeArray[i]=i+1;
        purchaseAmounts[i] = gPurchAmounts[i];
        purchaseItemCodeArray[i] = gPurchItemCodes[i];
        purchaseNetTotalArray[i] = gPurchAmounts[i] * unitPriceArray[gPurchItemCodes[i]-1];

        lastPurchaseCode = i+1;
    }

    int gSalesItemCodes[3] = {1,2,3};
    int gSalesAmounts[3] = {5,10,15};
    for(int i =0;i<3;i++){
        salesCodeArray[i] =i+1;
        salesItemCodeArray[i] = gSalesItemCodes[i];
        salesAmounts[i] = gSalesAmounts[i];
        salesNetTotalArray[i] = gSalesAmounts[i] * unitPriceArray[gSalesItemCodes[i]-1];
        salesSubTotalArray[i] = ( salesNetTotalArray[i] >= discountLevelsArray[gSalesItemCodes[i]-1] ) ?
                                salesNetTotalArray[i] * (1 - discountRateArray[gSalesItemCodes[i]-1]/100.0) :
                                salesNetTotalArray[i];

        lastSalesCode = i+1;





    }

}
void mainMenu(){
    printf("Welcome to the inventory Management System\n");
    printf("\t\t\tMAIN MENU\n");
    printf("\t1.  Add new stock entry\n");
    printf("\t2.  Record Purchases \n");
    printf("\t3.  Record Sales\n");
    printf("\t4.  View Sales details\n");
    printf("\t5.  View Purchase details\n");
    printf("\t6.  View Stock Details\n");
    printf("\t9.  Exit Program\n");
}
void getUserChoice(int* userChoice){
    printf("Enter choice to continue: ");
    scanf("%d",userChoice);
}
void addStockEntry(){
    printf("Entering item data for item code %d\n",lastItemCode+1);
    itemCodeArray[lastItemCode] = lastItemCode + 1;
    printf("Enter item name: ");
    scanf("%s",itemNameArray[lastItemCode]);
    int isUnitPriceZero = 1;
    while(isUnitPriceZero){
        printf("Enter item unit price: ");
        scanf("%f",&unitPriceArray[lastItemCode]);
        if(unitPriceArray[lastItemCode] == 0 && unitPriceArray[lastItemCode] > 0){
            printf("Unit price can not be zero\n");
        }else{
            isUnitPriceZero = 0;
        }
    }
    printf("Enter item discount levels: ");
    scanf("%d",&discountLevelsArray[lastItemCode]);
    printf("Enter item discount rates(Enter the percentage e.g. to represent 15%% input 15): ");
    scanf("%f",&discountRateArray[lastItemCode]);
    printf("Enter current stock: ");
    scanf("%d",&currentStockArray[lastItemCode]);
    lastItemCode += 1;
}
void purchaseStocks(){
    int inputItemCode = 0;
    int inputAmount = 0;
    printf("Entering purchase code: %d\n",lastPurchaseCode+1);
    printf("Enter item code: ");
    scanf("%d",&inputItemCode);
    if(inputItemCode <= lastItemCode){
        int isAmountZero = 1;
        while(isAmountZero){
            printf("Enter amount: ");
            scanf("%d",&inputAmount);
            if(inputAmount == 0){
                isAmountZero = 1;
            }else{
                isAmountZero = 0;
            }
        }
        purchaseCodeArray[lastPurchaseCode] = lastPurchaseCode+1;
        purchaseItemCodeArray[lastPurchaseCode] = inputItemCode;
        purchaseAmounts[inputItemCode-1] = inputAmount;
        purchaseNetTotalArray[inputItemCode-1] = purchaseAmounts[inputItemCode-1] * unitPriceArray[inputItemCode-1];
        currentStockArray[inputItemCode-1]=currentStockArray[inputItemCode-1]+inputAmount;
        lastPurchaseCode += 1;
    }
    else
        printf("invalid item code.\n");

}
void sellStocks(){
    int inputItemCode = 0;
    int sellingAmount = 0;
    printf("Entering sales code: %d\n",lastSalesCode+1);
    printf("Enter item code: ");
    scanf("%d",&inputItemCode);
    if(inputItemCode <= lastItemCode){
        int isAmountZero = 1;
        while(isAmountZero){
            printf("Enter amount: ");
            scanf("%d",&sellingAmount);
            if(sellingAmount == 0){
                isAmountZero = 1;
            }else{
                isAmountZero = 0;
            }
        }
        if(sellingAmount>currentStockArray[inputItemCode-1])
        {
            printf("not enough stock available to complete the order\n");
        }
        else
        {
        salesCodeArray[lastSalesCode] = lastSalesCode+1;
        salesItemCodeArray[lastSalesCode] = inputItemCode;
        salesAmounts[lastSalesCode] = sellingAmount;
        salesNetTotalArray[inputItemCode-1]= sellingAmount * unitPriceArray[inputItemCode-1];
        //discountArray[lastItemCode]=(sellingAmount>=discountLevelsArray[lastItemCode])?salesNetTotalArray[lastItemCode]*discountRateArray[lastItemCode]/100:0;
        //salesSubTotalArray[lastItemCode]=salesNetTotalArray[lastItemCode]-discountArray[lastItemCode];
        salesSubTotalArray[inputItemCode-1] = ( salesNetTotalArray[inputItemCode-1] >= discountLevelsArray[inputItemCode-1] ) ?
                            salesNetTotalArray[inputItemCode-1] * (1 - discountRateArray[inputItemCode-1]/100.0) :
                            salesNetTotalArray[inputItemCode-1];

        currentStockArray[inputItemCode-1]=currentStockArray[inputItemCode-1]-sellingAmount;
        lastSalesCode+=1;
        }

        }

}

void displayStocks(){

//labels
        for(int j =0;j<80;j++){
            printf("_");}
        printf("\n");

        printf("item name  |");
        printf(" item code  |");
        printf("unit price  |");
        printf("discount level|");
        printf("discount rate|");
        printf("current stock|");
        printf("\n");

         for(int k =0;k<80;k++)
            printf("_");
          printf("\n");




    for(int i=0;i<lastItemCode;i++){
        printf("%10s | ",itemNameArray[i]);
        printf("%10d | ",itemCodeArray[i]);
        printf("%10.2f | ",unitPriceArray[i]);
        printf("%12.2f | ",discountLevelsArray[i]);
        printf("%11.2f%%| ",discountRateArray[i]);
        printf("%11d | ",currentStockArray[i]);
        printf("\n");

    }
}
void displaySales(){

    for(int j=0;j<lastItemCode;j++){
        for(int i =0;i<lastSalesCode;i++){
           if(itemCodeArray[j] == salesItemCodeArray[i]){
                printf("%10d  | ",salesCodeArray[i]);
                printf("%10d  |",salesItemCodeArray[i]);
                printf("%11s  |",itemNameArray[salesItemCodeArray[i]-1]);
                printf("%10.2f | ",unitPriceArray[salesItemCodeArray[i]-1]);
                printf("%10d  |",salesAmounts[i]);
                printf("%10.2f | ",salesNetTotalArray[i]);
                printf("%10.2f   |",salesSubTotalArray[i]);
                printf("\n");
            }
        }
    }
}
void displayPurchases(){

    //labels
        for(int j =0;j<80;j++)
            printf("_");
        printf("\n");

        printf("purchase code|");
        printf(" item code  |");
        printf(" item name   |");
        printf(" unit price |");
        printf(" no. of items|");
        printf(" net total|");
        printf("\n");

         for(int k =0;k<80;k++)
            printf("_");
          printf("\n");


    for(int j=0;j<lastItemCode;j++){
        for(int i =0;i<lastPurchaseCode;i++){
           if(itemCodeArray[j] == purchaseItemCodeArray[i]){
                printf("%10d  | ",purchaseCodeArray[i]);
                printf("%10d  |",purchaseItemCodeArray[i]);
                printf("%11s  |",itemNameArray[purchaseItemCodeArray[i]-1]);
                printf("%10.2f | ",unitPriceArray[purchaseItemCodeArray[i]-1]);
                printf("%10d  |",purchaseAmounts[purchaseItemCodeArray[i]-1]);
                printf("%10.2f | ",purchaseNetTotalArray[purchaseItemCodeArray[i]-1]);
                printf("\n");
            }
        }
    }
}
void clearWindow(){
    system("cls||clear");
}
void evaluateChoice(int userChoice){

    clearWindow();
    switch (userChoice)
    {
        case 1:
            addStockEntry();
            break;
        case 2:
            purchaseStocks();
            break;
        case 3:
            sellStocks();
            break;
        case 4:
            displaySales();
            break;
        case 5:
            displayPurchases();
            break;
        case 6:
            displayStocks();
            break;
        case 9:
            printf("Exiting the program");
            exit(0);
            break;
        default:
            printf("INVALID CHOICE\n");
            break;
    }
}

int main(){
    generateTestData();
    int userWantstoContinue = 1;
    int userChoice = 0;
    while(userWantstoContinue){
        char yesOrno = ' ';
        clearWindow();
        mainMenu();
        getUserChoice(&userChoice);
        evaluateChoice(userChoice);
       printf("Do you want to continue using the software (y/n): ");
        scanf(" %c",&yesOrno);
        if(yesOrno == 'y'|yesOrno == 'Y'){
            userWantstoContinue = 1;
        }else{
            userWantstoContinue  = 0;
        }
    }

}