#include "RelationshipHandler.hpp"
#include<string>
#include<vector>
#include <algorithm>
using namespace std;

//Takk til https://www.geeksforgeeks.org/split-a-sentence-into-words-in-cpp/
//fucking c++ does not has a split function like every other programming language in the world
vector<string> removeDupWord(const string& str) {
    vector<string> v = {};
    string word; // = "";
    for(auto x : str) {
        if(x == ' ') {
            if(word != "/relation") {
                v.push_back(word);
            }
            word = "";
        } else {
            word += x;
        }
    }
    v.push_back(word);
    return v;
}
vector<int> buildCalArr(vector<string> nameV) {
    string ges = nameV.at(0) + nameV.at(1);

    for(auto& c : ges) {
        c = tolower(c);
    }

    vector<int> v = {};
    for(auto c1 : ges) {
        //cout << c1 << '\n';
        int count = 0;
        for(auto c2: ges) {
            if(c1==c2) {
                ++count;
            }
        }
        v.push_back(count);
    }
    //cout << ges << endl;

    /*for(auto i: v) {
        cout << i << ' ';
    }
    cout << v.size() << "\n";*/
    return v;
}

int calculate(vector<string> names) {
    sort(names.begin(), names.end());
    vector<int> nums = buildCalArr(names);

    while(nums.size() > 2) {
        vector<int> tempNums = {};
        for(std::size_t i=0;i<nums.size()/2;i++) {
            int temp = nums.at(i) + nums.at(nums.size()-i-1);
            if(nums.size()%2==1 && i==nums.size()/2) {
                tempNums.push_back(nums.at(i));
            } else {
                if(temp < 10) {
                    tempNums.push_back(temp);
                } else {
                    tempNums.push_back(temp/10);
                    tempNums.push_back(temp%10);
                }
            }
        }
        if(nums.size()%2==1) {
            tempNums.push_back(nums.at(nums.size()/2));
        }
        nums.clear();
        for(auto i: tempNums) {
            nums.push_back(i);
        }
        /*for(auto i: nums) {
            cout << i << ' ';
        }
        cout << "\n";*/
    }

    return 10*nums.at(0)+nums.at(1);
}

bool isAlphaNum(const string& str) {
    //if(!std::for_each(str.begin(), str.end(), [](char& c) { if(!std::isalnum(c)) return false;})) return false;

    for(char i: str) {
        if(!isalnum(i)) {
            return false;
        }
    }
    return true;
}

string rsStart(vector<string> names) {
    //vector<string> names = removeDupWord(str);
    if(names.size() != 2) {
        return "Gib zwei Namen ein Du Troll!";
    }
    if(!isAlphaNum(names.at(0))) {
        return "Seit wann enthælt ein Name Sonderzeichen oder Zahlen? Spüre den Zorn von N!";
    }
    if(!isAlphaNum(names.at(1))) {
        return "Seit wann enthælt ein Name Sonderzeichen oder Zahlen? Spüre den Zorn von N!";
    }
    int result = calculate(names);

    return (names.at(0) + " und " + names.at(1) + " passen nach Angaben von N zu " + to_string(result) + "% zusammen. Gratuliere!\n");
}

void RelationshipHandler::onCall(Mongoose::Request& request, Mongoose::JsonResponse& response) {

    std::cout << "/relation was called\n";

    response["text"] = rsStart(vector<string>{request.get("name1", "Lukas"), request.get("name2", "cpp")});

    response["success"] = "1";
    response["session"] = "NULL";
    /*if (messagePtr->date > telegram->getBootDate()) {

        log(messagePtr->from->username + ": "+messagePtr->text);

        telegram->sendMessage(messagePtr->chat->id, rsStart(messagePtr->text));

    }*/

}