#include<stdio.h>
#include<conio.h>
#include<string.h>
struct car
{
    char brand[20];
    char model[30];
    char engine[100];
    char mileage[100];
    int passanger;
    float price;
    int id;
    int date;
    int month;
    int year;
};
struct sold
{
    char brand[20];
    char model[30];
    float price;
    int date;
    int month;
    int year;
};


void admin();
void visitor();
void insert();
void disp();
void update();
void delete();
void si();
void soi();
void solddisplay();
void soldsearch();
void search();
void compare();
void system();
void login();
void back();
void abcd();
void main1();

void main()
{
    abcd();
    main1();
}
void main1()
{
    system("color A");
    system("CLS");
    printf("\t\t\t\t\t\t\t\n");
    printf("\t\t\t\t============================================\n\n");
    printf("\t\t\t\tWELCOME TO MY VEHICLE MANAGEMENT SYSTEM\n");
    printf("\t\t\t\t============================================\n\n\n\n");
    printf("\t\t\t\t\t\t\t\n");
    int y;
    printf("press 1 or 2\n\t1.ADMIN\n\t2.Visitor\n");
    printf("\n\nEnter your choise : ");
    scanf("%d",&y);
    system("CLS");
    switch(y)
    {
    case 1:
    {
        login();
        break;
    }
    case 2:
    {
        visitor();
        break;
    }

    }
    getch();

}
void abcd()
{
    system("color A");
    printf("\n\n\t\t\t\t\t\tProject Name: Vehicle Management System.\n\n");
    printf("\n\n\t\t\t\t\t\tStudent Name: Iktear uddin\n\n");
    printf("\n\n\t\t\t\t\t\tID          : 173-35-2250\n\n");
    getch();
}
void login()
{
    system("CLS");
    printf("\t\t\t\t============================================\n\n");
    printf("\t\t\t\tWELCOME TO MY VEHICLE MANAGEMENT SYSTEM\n");
    printf("\t\t\t\t============================================\n\n\n\n");
    char user[10]="emon",pass[6]="123456",u[10],p[6],ch;
    int i,n;
    printf("\n Enter Username: \n\t\t");
    scanf("%s",&u);
    printf("\n Enter Your Password: \n\t\t");
    for(i=0; i<6; i++)
    {
        ch=getch();
        p[i]=ch;
        ch='*';
        printf("%c",ch);
    }
    if(strcmpi(u,user)==0)
    {
        if(strcmpi(p,pass)==0)
        {
            printf("\n\n");
            system("CLS");
            admin();
        }
        else
        {
            printf("\n\n\n\t\t\aPassword error!!!! \n");
            getch();
            main1();
        }
    }
    else
    {
        printf("\n\n\n\t\t\t\tUser Doesn't Exist\n");
        getch();
        main1();
    }
}
void back()
{
    int i;
    printf("\nDo you want to Continue press (0) or Back (1)\n");
    printf("\n\nEnter your choise : ");
    scanf("%d",&i);
    system("CLS");
    if(i==0)
    {
        admin();
    }
    else if(i==1)
    {
        printf("\n\n\t\t\tThank You\n\n\t\t\tLOADING");
        main1();
    }
    else
    {
        printf("Invalid Choice\n");
        back();
    }
}
void backx()
{
    int i;
    printf("\nDo you want to Continue press (0) or Back (1)\n");
    printf("\n\nEnter your choise : ");
    scanf("%d",&i);
    system("CLS");
    if(i==0)
    {
        visitor();
    }
    else if(i==1)
    {
        printf("\n\n\t\t\tThank You\n\n\t\t\tLOADING");
        main1();
    }
    else
    {
        printf("Invalid Choice\n");
        back();
    }
}
void admin()
{
    printf("\t\t\t\t============================================\n\n");
    printf("\t\t\t\tWELCOME TO MY VEHICLE MANAGEMENT SYSTEM\n");
    printf("\t\t\t\t============================================\n\n\n\n");
    int n=0;
    printf("\nchoose one\n1.Insert vehicle data\n2.Display vehicle data \n3.Update vehicle data \n4.Delete vehicle data \n5.sell info insert\n6.sold vehicle details \n");
    printf("\n\nEnter your choise : ");
    scanf("%d",&n);
    system("CLS");
    switch(n)
    {
    case 1:
    {
        insert();
        printf("\n\n");
        back();
        break;

    }
    case 2:
    {
        disp();
        printf("\n\n");
        back();
        break;
    }
    case 3:
    {
        update();
        printf("\n\n");
        back();
        break;
    }
    case 4:
    {
        disp();
        delete();
        printf("\n\n");
        back();
        break;
    }
    case 5:
    {
        si();
        printf("\n\n");
        back();
        break;
    }
    case 6:
    {
        soi();
        printf("\n\n");
        back();
        break;
    }
    default :
    {
        printf("\n\n\n\t\t\tInvalid input\n\t\t");
    }
    }
}

void si()
{
    struct sold s;
    struct car ca;
    char model[10];
    disp();
    printf("\n\nfrom avobe list which model you have sold");
    scanf("%s",&model);
    system("CLS");
    FILE *fp;
    fp=fopen("CarDetails.txt","r");
    while(fread(&ca,sizeof(ca),1,fp))
    {
        if(strcmpi(ca.model,model)==0)
        {
            printf("\nBrand : %s\nModel : %s\nengine : %s\nMileage : %s\npassanger_capacity : %d\nPrice : %.2f\n",ca.brand,ca.model,ca.engine,ca.mileage,ca.passanger,ca.price);
        }
    }
    FILE *fp1;
    fp1=fopen("sold.txt","a");
    printf("\n\nNow Enter Your Sold car Data\n\n");
    printf("Enter The Brand name: \n");
    scanf("%s",&s.brand);
    printf("Enter Model number : \n");
    scanf("%s",&s.model);
    printf("Enter Price of the car in BDT :\n");
    scanf("%f",&s.price);
    printf("Enter sell Date :");
    scanf("%d",&s.date);
    printf("month :");
    scanf("%d",&s.month);
    printf("year :");
    scanf("%d",&s.year);
    printf("The record is successfully added");
    fwrite(&s,sizeof(s),1,fp1);
    fclose(fp);
    fclose(fp1);
}
void soi()
{
    printf("\nchoose one\n\n 1. display all sold car details.\n 2. search sold model by date.\n\n");
    int y;
    scanf("%d",&y);
    switch(y)
    {
    case 1:
    {
        solddisplay();
        break;
    }
    case 2:
    {
        soldsearch();
        break;
    }
    default :
    {
        printf("\n\n\n\t\t\tInvalid input\n\t\t");
    }

    }
}
void solddisplay()
{
    struct sold s;
    FILE *fp;
    fp=fopen("sold.txt","r");
    while(fread(&s,sizeof(s),1,fp))
    {
        printf("\nBrand : %s\nModel : %s\nPrice : %.2f\nsold date : %d-%d-%d\n\n",s.brand,s.model,s.price,s.date,s.month,s.year);
    }
    fclose(fp);
}
void soldsearch()
{
    struct sold s;
    char another;
    int d,m,y;
    another='y';
    while(another== 'y')
    {
        printf("Enter date : \n");
        scanf("%d",&d);
        printf("Enter month : \n");
        scanf("%d",&m);
        printf("Enter year : \n");
        scanf("%d",&y);
        FILE *fp;
        fp=fopen("sold.txt","r");
        while(fread(&s,sizeof(s),1,fp))
            if(s.date==d && s.month==m && s.year==y)
            {
                printf("\nBrand : %s\nModel : %s\nPrice : %.2f\nsold date : %d-%d-%d\n\n",s.brand,s.model,s.price,s.date,s.month,s.year);
            }
        printf("\nwant to search again? (y/n)  : \n\n");
        fflush(stdin);
        another=getch();
        fclose(fp);
    }
}
void insert()
{
    char another;
    struct car ca;
    another='y';
    while(another== 'y')
    {
        FILE *fp;
        fp=fopen("CarDetails.txt","a");
        printf("Enter The Brand name: \n");
        scanf("%s",&ca.brand);
        printf("Enter Model number : \n");
        scanf("%s",&ca.model);
        printf("Enter engine details : \n");
        scanf("%s",&ca.engine);
        printf("Enter mileage : \n");
        scanf("%s",&ca.mileage);
        printf("Enter passanger capacity :\n");
        scanf("%d",&ca.passanger);
        printf("Enter Price of the car in BDT :\n");
        scanf("%f",&ca.price);
        printf("The record is successfully added");
        fwrite(&ca,sizeof(ca),1,fp);
        printf("\nDo you want to insert more car date? (y/n)  : \n\n");
        fflush(stdin);
        another=getch();
        fclose(fp);
    }
}
void disp()
{
    struct car ca;
    FILE *fp;
    fp=fopen("CarDetails.txt","r");
    while(fread(&ca,sizeof(ca),1,fp))
    {
        printf("\nBrand : %s\nModel : %s\nengine : %s\nMileage : %s\npassanger_capacity : %d\nPrice : %.2f\n",ca.brand,ca.model,ca.engine,ca.mileage,ca.passanger,ca.price);
    }
    fclose(fp);
}
void update()
{
    char another;
    struct car ca;
    char nm[30];
    FILE *fp;
    fp = fopen("CarDetails.txt","r+");
    another='y';
    while(another== 'y')
    {
        printf("enter the model name you want to modify : ");
        scanf("%s",nm);
        system("CLS");
        rewind(fp);
        while(fread(&ca,sizeof(ca),1,fp))
        {
            if(strcmpi(ca.model,nm) == 0)
            {

                printf("\n\nEnter The Brand name: \n");
                scanf("%s",&ca.brand);
                printf("Enter Model number : \n");
                scanf("%s",&ca.model);
                printf("Enter engine details : \n");
                scanf("%s",&ca.engine);
                printf("Enter mileage : \n");
                scanf("%s",&ca.mileage);
                printf("Enter passanger capacity :\n");
                scanf("%d",&ca.passanger);
                printf("Enter Price of the car in BDT :\n");
                scanf("%f",&ca.price);
                fseek(fp,-sizeof(ca),SEEK_CUR);
                fwrite(&ca,sizeof(ca),1,fp);
                break;
            }
        }
        printf("\nmodify another record(y/n)\n\n");
        fflush(stdin);
        another=getch();
    }
    fclose(fp);
}
void delete ()
{
    FILE *fp,*fp1;
    struct car ca;
    int found=0,count=0;
    char model[100];
    char another;
    another='y';
    while(another== 'y')
    {
        fp=fopen("CarDetails.txt","r");
        fp1=fopen("tempr.txt","w");
        printf("\n\n\nenter the product model number that you want to delete : ");
        scanf("%s",&model);
        system("CLS");
        while(1)
        {
            fread(&ca,sizeof(ca),1,fp);
            if(feof(fp))
            {
                break;
            }
            if(strcmpi(ca.model,model)==0)
            {
                found=1;
            }
            else
            {
                fwrite(&ca,sizeof(ca),1,fp1);
            }
        }
        fclose(fp);
        fclose(fp1);
        if(found==0)
        {
            printf("\n\nsorry no record found\n\n");
        }
        else
        {
            fp=fopen("CarDetails.txt","w");
            fp1=fopen("tempr.txt","r");
            while(1)
            {
                fread(&ca,sizeof(ca),1,fp1);
                if(feof(fp1))
                {
                    break;
                }
                fwrite(&ca,sizeof(ca),1,fp);
            }
        }
        printf("\n\nData Deleted\n\n");
        printf("\nDo you want to delete more? (y/n) : \n\n");
        fflush(stdin);
        another=getch();
        fclose(fp);
        fclose(fp1);
    }
}
void visitor()
{
    int z;
    printf("Press 1 or 2\n\t1.vehicle specifications\n\t2.Compare vehicles\n");
    printf("\n\nEnter your choise : ");
    scanf("%d",&z);
    system("CLS");
    switch(z)
    {
    case 1:
    {
        search();
        backx();
        break;
    }
    case 2:
    {
        compare();
        backx();
        break;
    }
    default :
    {
        printf("\n\n\n\t\t\tInvalid number\n\t\t");
    }
    }
}
void search()
{
    struct car ca;
    char another;
    char model[10];
    another='y';
    while(another== 'y')
    {
        printf("Enter Which model you want so see : \n");
        scanf("%s",&model);
        system("CLS");
        FILE *fp;
        fp=fopen("CarDetails.txt","r");
        while(fread(&ca,sizeof(ca),1,fp))
            if(strcmpi(ca.model,model)==0)
            {
                printf("\nBrand : %s\nModel : %s\nengine : %s\nMileage : %s\npassanger_capacity : %d\nPrice : %.2f\n",ca.brand,ca.model,ca.engine,ca.mileage,ca.passanger,ca.price);

            }
        printf("\nwnat to see any other model?? (y/n)  : \n\n");
        fflush(stdin);
        another=getch();
        fclose(fp);
    }
}
void compare()
{
    struct car ca;
    double a,b;
    char model[10],model1[10];
    char another;
    another='y';
    while(another== 'y')
    {
        printf("Enter the first car model number : \n");
        scanf("%s",&model);
        printf("Enter the second car model number : \n");
        scanf("%s",&model1);
        FILE *fp;
        fp=fopen("CarDetails.txt","r");
        while(fread(&ca,sizeof(ca),1,fp))
        {
            if(strcmpi(ca.model,model)==0)
            {
                printf("\nBrand : %s\nModel : %s\nengine : %s\nMileage : %s\npassanger_capacity : %d\nPrice : %.2f\n",ca.brand,ca.model,ca.engine,ca.mileage,ca.passanger,ca.price);
                b=ca.price;
            }
            else if(strcmpi(ca.model,model1)==0)
            {
                printf("\nBrand : %s\nModel : %s\nengine : %s\nMileage : %s\npassanger_capacity : %d\nPrice : %.2f\n",ca.brand,ca.model,ca.engine,ca.mileage,ca.passanger,ca.price);
                b=ca.price;
            }
        }
        if (a>b)
        {
            printf("\n\n\t\t\t\tas per our research first car is better then second car\n");
        }
        else if (a<b)
        {
            printf("\n\n\t\t\t\tas per our research second car is better then first car\n");
        }
        printf("\n do you want to see another comparison? (y/n) : \n\n");
        fflush(stdin);
        another=getch();
        fclose(fp);
    }
}