/*********
 -*- Made by VoxelPixel
 -*- For YouTube Tutorial
 -*- https://github.com/VoxelPixel
 -*- Support me on Patreon: https://www.patreon.com/voxelpixel
*********/

#include <iostream>
#include <string>

using namespace std;

//we'll be using ASCII in this

string schlüssel(int wahl, string dat, int schlüssel)
{
    int choice;
    /*
     cout << "1. Encryption" << endl << "2. Decryption" << endl << "Enter choice(1,2): ";
     cin >> choice;
     cin.ignore();
     */
    choice = wahl;
    if (choice == 1) {
        // encryption
        string msg;
        /*cout << "Message can only be alphabetic" << endl;
        cout << "Enter message: ";
        getline(cin, msg);

        msg = dat;
        */
        int key;
        /*
        cout << "Enter key (0-25): ";
        cin >> key;
        cin.ignore();
        */
        key = schlüssel;
        string encryptedText = msg;

        for (int i = 0; i < msg.size(); i++) {

            if (msg[i] == 32) {
                continue; //32 is ASCII of space character, we will ignore it
            }
            else {

                if ((msg[i] + key) > 122) {
                    //after lowercase z move back to a, z's ASCII is 122
                    int temp = (msg[i] + key) - 122;
                    encryptedText[i] = 96 + temp;
                }
                else if (msg[i] + key > 90 && msg[i] <= 96) {
                    //after uppercase Z move back to A, 90 is Z's ASCII
                    int temp = (msg[i] + key) - 90;
                    encryptedText[i] = 64 + temp;
                }
                else {
                    //in case of characters being in between A-Z & a-z
                    encryptedText[i] += key;
                }

            } //if
        } // for

        //cout << "Encrypted Message: " << encryptedText;
        return encryptedText;

    }
    else if (choice == 2) {
        //decryption

        string encpMsg;
        /*cout << "Message can only be alphabetic" << endl;
        cout << "Enter encrypted text: ";
        getline(cin, encpMsg);
        */
        encpMsg = dat;
        int dcyptKey;
        /*cout << "Enter key (0-25): ";
        cin >> dcyptKey;
        cin.ignore();
        */
        dcyptKey = schlüssel;
        string decryptedText = encpMsg;

        for (int i = 0; i < encpMsg.size(); i++) {
            if (encpMsg[i] == 32) {
                continue; //ignoring space
            }
            else {
                if ((encpMsg[i] - dcyptKey) < 97 && (encpMsg[i] - dcyptKey) > 90) {
                    int temp = (encpMsg[i] - dcyptKey) + 26;
                    decryptedText[i] = temp;
                }
                else if ((encpMsg[i] - dcyptKey) < 65) {
                    int temp = (encpMsg[i] - dcyptKey) + 26;
                    decryptedText[i] = temp;
                }
                else {
                    decryptedText[i] = encpMsg[i] - dcyptKey;
                }
            }
        }

        // cout << "Decrypted Message: " << decryptedText << endl;
        return decryptedText;
    }
    else {
        cout << "Invalid choice";
    }

}

int arr[26];

void buchzähler(string dat, int max)
{
    string alp = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    //int lanalp = sizeof(alp) / sizeof(string);
    //int laenge = sizeof(dat) / sizeof(string);
    //cout << lanalp << "  "  <<laenge << endl;
    for (int i = 0; i < max; ++i)
    {
        for (int z = 0; z < 26; ++z)
        {
            if (dat[i] == alp[z])
                arr[z] += 1;
        }

    }
}


int main()
{
    /* for (int i = 1; i <= 23; ++i)
     {
         string temp = schlüssel(2, "QNFRVAMVTRVAFPUEVSGYVPUTRFVPUREGRCBEGENRGPNRFNEFQNFMHYROMRV", i);
         cout << i << " :     " << temp << endl;
     }
     */
    buchzähler("QNFRVAMVTRVAFPUEVSGYVPUTRFVPUREGRCBEGENRGPNRFNEFQNFMHYROMRV", 59);
    buchzähler("GRARAGFGNAQVFGNHSZHRAMRAHROREYVRSREGQVRVAFRVARZYRGMGRAYRORA", 59);
    buchzähler("FWNUETRCENRTGJHEQRAFVRMRVTRARVARUNTRERCREFBAZVGUBUREFGVEAHA", 59);
    buchzähler("QYNATRZSNYGVTRZUNYFNHSQRETEHAQYNTRQREZHRAMNOOVYQHATRAJHEQRR", 59);
    buchzähler("VAVAGHFPHYHZTRSHAQRAREWRGMGVAGHEVAORSVAQYVPUREXBCSNHFXNYXFG", 59);
    buchzähler("RVANYFMRVGTRABRFFVFPURFCBEGENRGPNRFNEFVQRAGVSVMVREGCBFGHZRQ", 59);
    buchzähler("NEFGRYYHATRASVAQRAFVPUJVRQREHZNHSZHRAMRAQRARARVAXBCSVZINGVX", 59);
    buchzähler("NARAGFCEVPUGQNFCBEGENRGVFGQRHGYVPUVQRNYVFVREGRENYFQVRMHYROM", 59);
    buchzähler("RVGRARAGFGNAQRARAQVRVQRNYVFVREHATQREQNEFGRYYHATQRFQVIHFVHYV", 59);
    buchzähler("HFFRGMGRFVPUVANHTHFGRVFPUREMRVGSBEGRVTRAFGNRAQVTVFGRVAJBUYV", 59);
    buchzähler("ANRTLCGRARAGFGNAQRARECBEGENRGXBCSNHFTEHRAFPUVRSREVAQRENAGVX", 59);
    buchzähler("RAFNZZYHATOREYVA", 16);

    string alp = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    int stan[26] = {6,2,2,5,17,2,3,5,8,1,1,3,2,10,2,1,1,7,7,6,4,1,1,1,1,1};
    //int temp = 0;
    double res = 0.0;
    for (int i = 0; i < 26; ++i)
    {
        double temp = (double)arr[i] / 6.65;
        //temp += arr[i];
        res += temp;
        cout << alp[i] << ":   " << temp << "%" <<"  Durchschnitt Standard :  "  << stan[i] <<"%"<< endl;
    }
    cout << res << endl;
}