//============================================================================
// CS 1337.003 Project 2 <bah170030> <Bushra Hameed>

/* A program that reads simulated patient health information from
standard input, performs a bit of analysis on that data and outputs
a summary of the information.   */

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

#include <iostream>
using namespace std;

// a structure of the patient's vital information
struct PatVitals
{
    float temperature;
    unsigned int systolicPressure;
    unsigned int diastolicPressure;
};

// a structure of the patient's activity information
struct PatActivity
{
    unsigned int stepCount;
    unsigned int sleepHours;
};

// create a union consisting of structures the previous structures
union Patient
{
    // create variables using the structure data types
    PatVitals patientVitals;
    PatActivity patientActivity;
};

struct Overall
{
    int patientVitalType;

    // union previously declared
    Patient patientInfo;
};

// global array of the structure Overall that consists of the data type Patient
// Patient can access structures PatVitals and PatActivity
Overall array[100];

int main()
{

    int response, counter = 0, index = 0;

    // maximum temperature and pressures
    float maxTemp = 0, maxSystolic = 0, maxDiastolic = 0;

    // minimum temperature and pressures
    float minTemp = 1000, minSystolic = 1000, minDiastolic = 1000;

    // total step count and hours of sleep
    int stepTotal = 0, sleepTotal = 0;

    // prompt the user to enter the desired action

            cout << "Please enter the number of the desired action (1, 2, 3):\n";
            cout << "1 - Enter some patient vital information\n";
            cout << "2 - Enter some patient activity information\n";
            cout << "3 - Print summary information on the patient information and exit the program\n";

            // user entered response
            cin >> response;

    while (response != 3)
    {
        // this nested while loop outputs an error message
                while (response != 1 && response !=2 && response != 3)
                {
                    cout << "Please enter 1, 2, or 3\n";
                    cout.flush();
                    cin >> response;

                }
        // if the user enters 1
        if(response == 1)
        {

            cout << "Enter the temperature: \n";
            cin >> array[counter].patientInfo.patientVitals.temperature;

            // if the variable cannot be accessed or is less than 0
            while (!array[counter].patientInfo.patientVitals.temperature ||
                    array[counter].patientInfo.patientVitals.temperature < 0)
            {
                // Error message
                cout << "Please enter an integral unsigned number\n";
                cin.clear();
                cin.ignore();
                cin >> array[counter].patientInfo.patientVitals.temperature;
            }

            // check the maximum value and reassign if applicable
            if(array[counter].patientInfo.patientVitals.temperature > maxTemp)
            {
                maxTemp = array[counter].patientInfo.patientVitals.temperature;
            }

            // check the minimum value and reassign if applicable
            if(array[counter].patientInfo.patientVitals.temperature < minTemp)
            {
                minTemp = array[counter].patientInfo.patientVitals.temperature;
            }

            cout << "Enter the systolic pressure: \n";
            cin >> array[counter].patientInfo.patientVitals.systolicPressure;

            // if the variable cannot be accessed or is less than 0
            while (!array[counter].patientInfo.patientVitals.systolicPressure ||
                    array[counter].patientInfo.patientVitals.systolicPressure < 0)
            {
                // Error message
                cout << "Please enter an integral unsigned number\n";
                cin.clear();
                cin.ignore();
                cin >> array[counter].patientInfo.patientVitals.systolicPressure;
            }

            // check the maximum value and reassign if applicable
            if(array[counter].patientInfo.patientVitals.systolicPressure > maxSystolic)
            {
                maxSystolic = array[counter].patientInfo.patientVitals.systolicPressure;
            }

            // check the minimum value and reassign if applicable
            if(array[counter].patientInfo.patientVitals.systolicPressure < minSystolic)
            {
                minSystolic = array[counter].patientInfo.patientVitals.systolicPressure;
            }


            cout << "Enter the diastolic pressure: \n";
            cin >> array[counter].patientInfo.patientVitals.diastolicPressure;

            // if the variable cannot be accessed or is less than 0
            while (!array[counter].patientInfo.patientVitals.diastolicPressure ||
                    array[counter].patientInfo.patientVitals.diastolicPressure < 0)
            {
                // Error message
                cout << "Please enter an integral unsigned number\n";
                cin.clear();
                cin.ignore();
                cin >> array[counter].patientInfo.patientVitals.diastolicPressure;
            }

            // check the maximum value and reassign if applicable
            if(array[counter].patientInfo.patientVitals.diastolicPressure > maxDiastolic)
            {
                maxDiastolic = array[counter].patientInfo.patientVitals.diastolicPressure;
            }

            // check the minimum value and reassign if applicable
            if(array[counter].patientInfo.patientVitals.diastolicPressure < minDiastolic)
            {
                minDiastolic = array[counter].patientInfo.patientVitals.diastolicPressure;
            }


            counter++;

        }

        // if the user enters 2
        if(response == 2)
        {
            // prompt the user to enter the step count
            cout<<"Enter the step count: "<< endl;

            // input a value into the variable stepCount
            cin >> array[index].patientInfo.patientActivity.stepCount;

            // calculate the total of stepCount
            stepTotal += array[index].patientInfo.patientActivity.stepCount;

            // prompt the user to enter the number of hours of sleep
            cout<<"Enter the sleep hours: "<<endl;

            // input a value into the variable sleepHours
            cin >> array[index].patientInfo.patientActivity.sleepHours;

            // calculate the total of sleepHours
            sleepTotal += array[index].patientInfo.patientActivity.sleepHours;

            // increment the subscript
            index++;

        }


        cout << "Please enter the number of the desired action (1, 2, 3):\n";
                    cout << "1 - Enter some patient vital information\n";
                    cout << "2 - Enter some patient activity information\n";
                    cout << "3 - Print summary information on the patient information and exit the program\n";


        cin >> response;
    } // end of while loop

        // if the user enters 3
        if(response == 3)
        {

            cout << "Number of patient vital information records: "<< index++ << endl;
            cout << "Maximum temperature: "<< maxTemp << endl;
            cout << "Minimum temperature: "<< minTemp << endl;
            cout << "Maximum Systolic Pressure: "<< maxSystolic << endl;
            cout << "Minimum Systolic Pressure: "<< minSystolic << endl;
            cout << "Maximum Diastolic Pressure: " << maxDiastolic << endl;
            cout << "Minimum Diastolic Pressure: " << minDiastolic << endl;
            cout << "Number of patient activity information records: " << counter++ << endl;
            cout << "Total step count: " << stepTotal << endl;
            cout << "Total sleep hours: " << sleepTotal << endl;

        }




    return 0;

}