//
// Created by yukun on 29.11.19.
//
#include <iostream>
#include <vector>
#include "vkvm.hpp"
#include "Terminal.h"

std::string Terminal::getString() {
    return s;
}

void Terminal::init(){
    s = s + cursor;
}

void Terminal::setString(char c) {
//    s.erase(s.end() - 1);
//    s = s + c + cursor;
    int i = s.find(cursor);
    std::cout << i << std::endl;
    std::cout<< s.length() -1 <<std::endl;
    if(i < s.length() -1 ){
        s= s + s[s.length() - 1];
        int l = s.length() - 1;
        for(; l > i + 1; l--){
            s[l] = s[l-1];
        }
        s[i+1] = c;
    }
    else{
        s = s + cursor;
        s[s.length()-2] = c;


    }
}

void Terminal::subString(){
//    if(s.length() > 1)
//    s.erase(s.end() - 1);
//    s.erase(s.end() - 1);
//    s = s + cursor;
    if(s.length() > 1) {
        int i = s.find(cursor);
        s.erase(i - 1, 1);
    }
}

void Terminal::shiftpressed() {
      status = 1;

}

void Terminal::shiftup() {
    status = 0;

}

int Terminal::getstatus() {
    return status;
}

void Terminal::moveleft(){
    int i = s.find(cursor);
    if(i > 0){
        char c = s[i-1];
        s[i-1] = cursor;
        s[i] = c;
    }
}

void Terminal::moveright() {
    int i = s.find(cursor);
    if(i < (s.length() - 1)){
        char c = s[i+1];
        s[i+1] = cursor;
        s[i] = c;
    }
}

void Terminal::movedown() {
    std::string news="";
    int i = s.find(cursor);
    s.erase(i, 1);

    std::vector<std::vector<char>> vec(100,std::vector<char>(21,0));
    for(int n = 0; n < 100; n++){
        if(n*21 < s.length()) {
            for (int m = 0; m < 21; m++) {
                int sum = n * 21 + m;
                if (s[sum] != '\n') {
                    vec[n][m] = s[sum];
                    std::cout<<"vec before" +  vec[n][m]<<std::endl;
                }
                else {
                    vec[n][m] = s[sum];
                    break;
                }
            }
        }
        else {
            break;
        }
    }

    int cursorrow = i / 21;
    int cursorcolumn =i % 21;
    std::cout<<"before" + std::to_string(cursorrow) + ' '+ std::to_string(cursorcolumn)<<std::endl;
    if(vec[cursorrow+1].size() >= cursorcolumn){
        cursorrow++;
    }
    else if(vec[cursorrow+1].size() >=1){
        cursorrow++;
        cursorcolumn = vec[cursorrow].size()-1;
    }
    std::cout<<"after" + std::to_string(cursorrow) + ' '+ std::to_string(cursorcolumn)<<std::endl;

  for(int n = 0; n < 100; n++){
      for(int m=0;m<21;m++){
          if((n==cursorrow) && (m==cursorcolumn)){
           news = news + cursor;
          }
          else if(vec[n][m] != '\n'){
          std::cout<<"vec after" +  vec[n][m]<<std::endl;
          news = news + vec[n][m];
          }
          else{
              news = news + vec[n][m];
              break;
          }
      }
  }

  std::cout<< news<<std::endl;

}

void Terminal::moveup() {

}