main.c

/*

Candidate Names & Numbers: Kori Pitter 1000391954
                                                  Jovan Clue 1000390648
Subject: Computer Science U1
Program Name: George E. Clue Attorney at Law Filing System
Description: This program will allow users (office staff) to enter client case information and in addition
client billing info, which allows for ease in locating files and retrieving case info at short notice.

*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define FILE_NAME_LENGTH 100
#define LINE_LENGTH 200
#define DOWN_PAYMENT_PERCENTAGE 0.1

void password();
void editClientFile(const char*, const char*);
void addClientFile(const char*, const char*);
void printClientFile(const char*, const char*);


int main()

{

    char clientFirstName[50];
    char clientLastName[50];
    char option;
    char NewFile;

    password();

    system("color F0");

    printf("\t**WELCOME TO THE GEORGE E. CLUE ATTORNEY AT LAW FILING SYSTEM**\n\n");
    printf("Select an option from the choices below:\n");

    printf("1. Add a new client file\n2. Read an existing client file\n3. Edit an existing client file\n\n");
        scanf(" %c", &option);

    switch (option) {

        case '1':

            printf("Enter the client’s first name: ");     // Accepting client information for case 1
                scanf("%s", clientFirstName);

            printf("Enter the client’s last name:  ");
                scanf("%s", clientLastName);

            addClientFile(clientFirstName, clientLastName);   // Calling the function to add client file
            break;

        case '2':

            printf("Enter the client’s first name: ");     // Accepting client information for case 2
                scanf("%s", clientFirstName);

            printf("Enter the client’s last name: ");
                scanf("%s", clientLastName);

            printClientFile(clientFirstName, clientLastName);  // Calling the function to read client file
            break;

        case '3':

            printf("Enter the client’s first name: ");     // Accepting client information for case 1
                scanf("%s", clientFirstName);

            printf("Enter the client’s last name: ");
                scanf("%s", clientLastName);

            editClientFile(clientFirstName, clientLastName);   // Calling the function to add client file
            break;

        default:
            printf("Invalid Option Selected!\n");
            printf(" Please Try Again!");
            break;

    }

    return 0;
}

// Password Function for Program
 void password () {
    char username[10]; char pword[10];
    char username_correct[10] = "staff_1"; char pword_correct[10] = "GC@law";

    // Prompts user to enter password and username until correct credentials are entered
    printf("\t********WELCOME TO THE GEORGE E. CLUE ATTORNEY AT LAW FILING SYSTEM LOGIN PAGE********\n\n");
    printf("Please enter your correct username: ");
        scanf("%s", username);
    printf("Please enter your correct password: ");
        scanf("%s", pword);

        if ((strcmp(username, username_correct) != 0) && (strcmp(pword, pword_correct) != 0)) {
            // Loop to run until correct information is entered
            do {
                printf("Login info incorrect, TRY AGAIN! \n");
                printf("Please enter your correct username: ");
                    scanf("%s", username);
                printf("Please enter your correct password: ");
                    scanf("%s", pword);
            }
            while ((strcmp(username, username_correct) != 0) && (strcmp(pword, pword_correct) != 0));
        }
        else {
            printf("Login info correct, ACCESS GRANTED!\n\n");
        }


}

// Function to Add a File for a  new Client
void addClientFile(const char *clientfirstname, const char *clientlastname) {
    char filename[FILE_NAME_LENGTH];
          sprintf(filename, "%s_%s.txt", clientfirstname, clientlastname);

    FILE *file = fopen(filename, "w");

    if (file == NULL) {
        perror("\nTHERE WAS AN ERROR OPENING THIS FILE, PLEASE TRY AGAIN\n"); // Prints an error message to the user
        exit(EXIT_FAILURE);
    }

       // Accepting Client Information

     printf("Enter the client’s gender: ");        // Inputting Client's Gender
           char clientGender[10];
                scanf(" %s", clientGender);
                getchar();

    fprintf(file, "Gender:\n%s\n", clientGender);

    printf("Enter the client’s address: ");             // Inputting Client's Address
          char clientAddress[100];
               fgets(clientAddress, sizeof(clientAddress), stdin);

    fprintf(file, "Address:\n%s", clientAddress);

    printf("Enter the client’s phone number: ");        // Inputting Client's Phone Number
          char clientPhoneNum[20];
               scanf(" %s", clientPhoneNum);
               getchar();

    fprintf(file, "Phone Number:\n%s\n", clientPhoneNum);

    printf("Enter the client’s case number: ");         // Inputting Client's Case Number
          int caseNum;
              scanf(" %d", &caseNum);
              getchar();

    fprintf(file, "Case Number:\n%d\n", caseNum);

    printf("Enter the date the case was opened: ");     // Inputting the Date Client's Case was Opened
          char DateOpened[20];
               fgets(DateOpened, sizeof(DateOpened), stdin);

    fprintf(file, "Date Case Was Opened:\n%s", DateOpened);

    printf("Enter the client’s email address: ");       // Inputting Client's Email Address
          char clientEmail[50];
               scanf(" %s", clientEmail);
               getchar();

    fprintf(file, "Email Address:\n%s\n", clientEmail);

    printf("Enter the client’s card number: ");       // Inputting Client's Card Number
          char cardNum[20];
               scanf(" %s", cardNum);
               getchar();

    fprintf(file, "Card Number:\n%s\n", cardNum);

    printf("Enter the client’s last court date: ");   // Inputting Client's Last Court Date
          char LastCourtDate[20];
               fgets(LastCourtDate, sizeof(LastCourtDate), stdin);

    fprintf(file, "Last Court Date:\n%s", LastCourtDate);

    printf("Enter the client’s next court date: ");     // Inputting Client's Next Court Date
          char next_court_date[20];
               fgets(next_court_date, sizeof(next_court_date), stdin);

    fprintf(file, "Next Court Date:\n%s", next_court_date);

    printf("Enter the client’s last arrest date (If any): ");  // Inputting Client's Last Arrest Date
          char last_arrest[20];
            fgets(last_arrest, sizeof(last_arrest), stdin);

    fprintf(file, "Last Arrest Date:\n%s", last_arrest);

    printf("Enter the settlement amount for the case: $");     // Inputting Client's Settlement Amount
          float CaseSettlementAmount;
               scanf("%f", &CaseSettlementAmount);
               getchar();

    fprintf(file, "Settlement Amount:\n$%.2f\n", CaseSettlementAmount);

    // Calculating & Displaying Down Payment Amount

    float DownPayment = DOWN_PAYMENT_PERCENTAGE * CaseSettlementAmount;

      fprintf(file, "Down Payment:\n$%.2f\n", DownPayment);

        fclose(file);

          printf("File created successfully: %s\n", filename); // Confirmation that file has been made which is displayed to the user

}

// Function to display information on an existing client
void printClientFile(const char *clientfirstname, const char *clientlastname) {
                   char filename[FILE_NAME_LENGTH];
                        sprintf(filename, "%s_%s.txt", clientfirstname, clientlastname);


    FILE *file = fopen(filename, "r"); // Opening file in read mode

    if (file == NULL) {
       perror("\nTHERE WAS AN ERROR OPENING THIS FILE, PLEASE CHECK NAME AND TRY AGAIN\n"); // Error to be printed if the file entered doesn't exist
       exit(EXIT_FAILURE);
    }

    // Reading information from the file into a variable and outputting the information
    char line[200];
    while (fgets(line, sizeof(line), file)) {
        printf("%s", line);
    }

    fclose(file); // Closing file
}

// Function to adjust an existing client's information
void editClientFile(const char *clientfirstname, const char *clientlastname) {
    char filename[FILE_NAME_LENGTH];
    sprintf(filename, "%s_%s.txt", clientfirstname, clientlastname);

    FILE *file = fopen(filename, "r"); // Opening file in read mode

    if (file == NULL) {
        perror("THERE WAS AN ERROR OPENING THIS FILE, PLEASE CHECK NAME AND TRY AGAIN\n"); // Error shown if file does not exist
        exit(EXIT_FAILURE);
    }

    // Read the existing file line by line and display the content
    char line[LINE_LENGTH];
    while (fgets(line, sizeof(line), file)) {
        printf("%s", line);
    }

    fclose(file);

    // Allow user to edit specific fields
    printf("\nWhich field would you like to edit? Enter the corresponding number:\n");
    printf("1. Gender\n2. Address\n3. Phone Number\n4. Case Number\n5. Date Case was opened\n6. Email Address\n7. Card Number\n8. Last Court Date\n9. Next Court Date\n10. Last Arrest Date\n11. Settlement Amount\n12. Down Payment\n\t NB - Please update Down Payment Amount if Settlement Amount is updated.\n");

    int choice;
    scanf("%d", &choice);

    getchar();

    FILE *tempFile = fopen("temp.txt", "w");
    file = fopen(filename, "r");

    if (file == NULL || tempFile == NULL) {
        perror("THERE WAS AN ERROR OPENING THE FILE(S)\n");
        exit(EXIT_FAILURE);
    }

    int lineNum = 1;

    while (fgets(line, sizeof(line), file)) {
        // Checks if the line contains the chosen field
        if (lineNum == ((choice - 1) * 2 + 2)) {
            char newValue[LINE_LENGTH];
            // Prompts for edited value
            printf("Enter the new value: ");
            fgets(newValue, sizeof(newValue), stdin);

            // Updates the line with the new value
            fprintf(tempFile, "%s", newValue);
        } else {
            // Copy the line as is to the temporary file
            fprintf(tempFile, "%s", line);
        }

        lineNum++;
    }

    fclose(file);
    fclose(tempFile);

    // Rename the temporary file to the original file and remove the original
    if (remove(filename) != 0) {
        perror("ERROR DELETING THE ORIGINAL FILE\n");
        exit(EXIT_FAILURE);
    }

    if (rename("temp.txt", filename) != 0) {
        perror("ERROR RENAMING THE TEMPORARY FILE\n");
        exit(EXIT_FAILURE);
    }

    printf("File updated successfully: %s\n", filename);
}