#include <iostream>
#include <string>
#include <iomanip>

using namespace std;

struct currency {
    string currencyCode;
    double converison;
};

void printCurrencies(currency *records, currency canadianRecords[], currency bitcoinRecords[], currency euroRecords[], currency usRecords[], currency poundrecords[]);
string convertingToday(string &toBeConverted);
string convertTo(string &convertingTo);
void confirmConversion(string convertingTo, string toBeConverted );
double convertCurrencies(string convertingTo, string toBeConverted, double amount, double &finalResult, currency *records, currency canadianRecords[], currency bitcoinRecords[], currency euroRecords[], currency usRecords[], currency poundrecords[] );
double enterValues(string toBeConverted, double &amount);

currency records;

currency canadianRecords[4] = {{ "CAN - GBP:", 0.57}, {"CAN - USD:", 0.74}, {"CAN - ERO:", 0.67}, {"CAN - BIT:", 0.00031}};
currency bitcoinRecords[4] = {{"BIT - GBP:", 1842.56}, {"BIT - USD:", 2386.12}, {"BIT - ERO:", 2133.80}, {"BIT - CAN:", 3207.06}};
currency euroRecords[4] = {{"ERO - GBP:", 0.86}, {"ERO - USD:", 0.89}, {"ERO - BIT:", 0.00057}, {"ERO - CAN:", 1.50}};
currency usRecords[4] = {{"USD - GBP:", 0.77}, {"USD - ERO:", 0.89}, {"USD - BIT:", 0.00042}, {"USD - CAN:", 1.34}};
currency poundRecords[4] = {{"GBP - USD:", 1.29},{"GBP - ERO:", 1.16},{"GBP - BIT:", 0.00054}, {"GBP - CAN:", 1.74}};

int main() {

    string toBeConverted = "ERROR";
    string convertingTo = "ERROR";

    double amount;
    double finalResult;

    convertingToday(toBeConverted);

    convertTo(convertingTo);

    confirmConversion(convertingTo, toBeConverted);

    enterValues(toBeConverted, amount);

    convertCurrencies(convertingTo, toBeConverted, amount, finalResult, &records, canadianRecords, bitcoinRecords, euroRecords, usRecords, poundRecords);

    cout << amount << "  to  " << setprecision(6) << finalResult;

    return 0;
};

double enterValues(string toBeConverted, double &amount ){

    cout << "Enter the amount of " << toBeConverted << " you would like to change: " << endl;
    cin >> amount;

    return amount;
}

double convertCurrencies(string convertingTo, string toBeConverted, double amount, double &finalResult, currency *records, currency canadianRecords[], currency bitcoinRecords[], currency euroRecords[], currency usRecords[], currency poundrecords[] ){

    string conversionCode = toBeConverted + " - " + convertingTo;

    double conversionMult;

    for(int i(0); i <= 4; ++i){
        if(canadianRecords[i].currencyCode == conversionCode){
            conversionMult = canadianRecords[i].converison;
        }
    }

    for(int i(0); i <= 4; ++i){
        if(bitcoinRecords[i].currencyCode == conversionCode){
            conversionMult = bitcoinRecords[i].converison;
        }
    }

    for(int i(0); i <= 4; ++i){
        if(euroRecords[i].currencyCode == conversionCode){
            conversionMult = euroRecords[i].converison;
        }
    }

    for(int i(0); i <= 4; ++i){
        if(usRecords[i].currencyCode == conversionCode){
            conversionMult = usRecords[i].converison;
        }
    }

    for(int i(0); i <= 4; ++i){
        if(poundRecords[i].currencyCode == conversionCode){
            conversionMult = poundRecords[i].converison;
        }
    }

    cout << "MULT IS: " << conversionMult;

    finalResult = amount * conversionMult;

    return finalResult;
}

void confirmConversion(string convertingTo, string toBeConverted ){

    string startOver;

    cout << "You are converting " << toBeConverted << " to " << convertingTo << "." << endl << "Is this correct? (Enter Y to confirm, N to start over:" << endl;
    cin >> startOver;

    if(startOver == "Y"){
        return;
    }
    else {
        convertingToday(toBeConverted);

    }

}

void printCurrencies(currency *records, currency canadianRecords[], currency bitcoinRecords[], currency euroRecords[], currency usRecords[], currency poundRecords[]){

    cout << "We can convert between the following:" << endl;

    cout << "Canadian converisons:" << endl;
    for(int i(0); i <= 4; ++i){
        cout << canadianRecords[i].currencyCode;
        cout << endl;
    }
    cout << endl;

    cout << "Bitcoin conversions:" << endl;
    for(int i(0); i <= 4; ++i){
        cout << bitcoinRecords[i].currencyCode;
        cout << endl;
    }
    cout << endl;

    cout << "Euro conversions:" << endl;
    for(int i(0); i <= 4; ++i){
        cout << euroRecords[i].currencyCode;
        cout << endl;
    }
    cout << endl;

    cout << "US Dollar conversions:" << endl;
    for(int i(0); i <= 4; ++i){
        cout << usRecords[i].currencyCode;
        cout << endl;
    }
    cout << endl;

    cout << "British Pound conversions:" << endl;
    for(int i(0); i <= 4; ++i){
        cout << poundRecords[i].currencyCode;
        cout << endl;
    }
    cout << endl;

}

string convertingToday(string &toBeConverted){


    string startOver;
    string seeAll;

    /*cout << "What currency are you converting from today?" << endl;
     cout << "You can convert between:" << endl << "GBP" << endl << "CAN" << endl << "BIT" << endl << "USD" << endl << "ERO" << endl;
     cin >> toBeConverted;

     if(toBeConverted != "GBP" || "USD" || "CAN" || "BIT" || "ERO"){
     cout << "Looks like you entered the currency code wrong, pick again:" << endl;
     cin >> toBeConverted;
     }

     cout << "To Confirm, you want to convert " << toBeConverted << " today?" << endl;
     cout << "Enter Y to continue or N to pick again:" << endl;
     cin >> startOver;

     while(startOver != "Y"){
     cout << "What currency are you converting from today?" << endl;
     cout << "You can convert between:" << endl << "GBP" << endl << "CAN" << endl << "BIT" << endl << "USD" << endl << "ERO" << endl;
     cin >> toBeConverted;
     }

     if(toBeConverted != "GBP" || "USD" || "CAN" || "BIT" || "ERO"){
     cout << "Looks like you entered the currency code wrong, pick again:" << endl;
     cin >> toBeConverted;
     }

     cout << "To Confirm, you want to convert " << toBeConverted << " today?" << endl;
     cout << "Enter Y to continue or N to pick again:" << endl;
     cin >> startOver;*/

    while(startOver != "Y"){
        cout << "What currency are you converting from today?" << endl;
        cout << "You can convert between:" << endl << "GBP" << endl << "CAN" << endl << "BIT" << endl << "USD" << endl << "ERO" << endl;
        cin >> toBeConverted;

        while(toBeConverted != "GBP" && toBeConverted !="USD" && toBeConverted !="CAN" && toBeConverted !="BIT" && toBeConverted !="ERO"){
            cout << "Looks like you entered the currency code wrong, pick again:" << endl;

            cin >> toBeConverted;
        }

        cout << "To Confirm, you want to convert " << toBeConverted << " today?" << endl;
        cout << "Enter Y to continue or N to pick again:" << endl;
        cin >> startOver;

    }

    return toBeConverted;
}

string convertTo(string &convertingTo){

    string startOver;
    string seeAll;

    while(startOver != "Y"){
        cout << "What currency are you converting to?" << endl;
        cout << "You can convert to:" << endl << "GBP" << endl << "CAN" << endl << "BIT" << endl << "USD" << endl << "ERO" << endl;
        cin >> convertingTo;

        while(convertingTo != "GBP" && convertingTo !="USD" && convertingTo !="CAN" && convertingTo !="BIT" && convertingTo !="ERO"){
            cout << "Looks like you entered the currency code wrong, pick again:" << endl;

            cin >> convertingTo;
        }

        cout << "To Confirm, you want to convert " << convertingTo << " today?" << endl;
        cout << "Enter Y to continue or N to pick again:" << endl;
        cin >> startOver;

    }

    return convertingTo;

}