#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
#include <cstdlib>
#define Row 8
#define Column 10

using namespace std;

string FileName = "Null", excel[Column * Row], Text, Space, Token, Saveas, CopyExcel[10], Temp[10], UndoTile[80], UnCE[10], temp[8], SaveFile, Line, Savedata, LoadName, LoadTile[80];
int WordLength, TileNum, DelTile1, DelTile2, CopyTile1, CopyTile2, FileAmount = 0, Largest, TempNum;
char Choice;
void Choose(), Menu(), New(), Insert(), Delete(), Overwrite(), Load(), Save(), Copy(), Clipboard(), Cut(), Paste(), Find(), Undo(), BeforeUndo();

int main()
{
    cout << "*============================================" << endl << endl;
    cout << "File Name : Null" << endl << endl;
    Choose();
    for (int i = 0; i < 80; i++) //put all " " element in array
    {
        excel[i] = " ";
    }
    Insert();
    system("pause");
    return 0;
}

void Choose()
{
    cout << "[N]ew, [I}nsert, [D]elete, [O]verwrite, [L]oad, [S]save," << endl
        << "[C]opy, show - clip[B]oard, [X]cut, [P]aste, [F]ind, [U]ndo, [E]nd" << endl
        << "==>";
    cin >> Choice;
    char convert = (toupper(Choice)); //convert lowercase to uppercase
    while (cin.fail()) //avoid error input
    {
        cin.clear();
        cin.ignore();
        cout << "Invalid input, please enter again." << endl << endl
            << "*============================================"
            << endl << endl
            << "[N]ew, [I}nsert, [D]elete, [O]verwrite, [L]oad, [S]save," << endl
            << "[C]opy, show - clip[B]oard, [X]cut, [P]aste, [F]ind, [U]ndo, [E]nd " << endl
            << "==>";
        cin >> Choice;
    }

    switch (convert)
    {
    case 'N':
        New();
        Choose();
        break;

    case 'I':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        BeforeUndo();
        Insert();
        Menu();
        Choose();
        break;

    case 'D':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        BeforeUndo();
        Delete();
        Menu();
        Choose();
        break;

    case 'O':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        BeforeUndo();
        Overwrite();
        Menu();
        Choose();
        break;

    case 'C':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        BeforeUndo();
        Copy();
        Menu();
        Choose();
        break;

    case 'B':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        Clipboard();
        Choose();
        break;

    case 'X':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        BeforeUndo();
        Cut();
        Menu();
        Choose();
        break;

    case 'P':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        BeforeUndo();
        Paste();
        Menu();
        Choose();
        break;

    case 'F':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        Find();
        Menu();
        Choose();
        break;

    case 'U':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        Undo();
        Menu();
        Choose();
        break;

    case 'S':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        Save();
        Menu();
        Choose();
        break;

    case 'L':
        if (FileName == "Null")
        {
            cout << "Please create a new file first." << endl;
            Choose();
        }
        Load();
        Menu();
        Choose();
        break;

    case 'E':
        exit(0);
        break;

    default:
        cout << "Enter again." << endl;
        Choose();
    }
}

void Menu()
{
    for (int j = 0; j < 8; j++)
    {
        TempNum = 0;
        for (int i = j; i< 80; i+=8)
        {
            Largest = excel[i].length();
            if (Largest >= TempNum)
            {
                temp[j] = excel[i];
                TempNum = Largest;
            }

        }
    }

    cout << endl << "------------------------ new screen ------------------------" << endl;
    cout << endl << "File Name: " << FileName << endl;
    cout << "|----"; //1st line

    for (int i = 0; i < 8;i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength+2, '-');
    }
    cout << "|" << endl;

    cout << "|    |";//2nd line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << " " << i + 1 << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//3rd line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << "| 00 |";//4th line
    for (int i = 0; i < 8; i++)
    {
        int Longest = temp[i].length();
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//5th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << "| 08 |";//6th line
    int j = 0;
    for (int i = 8; i < 16; i++)
    {
        int Longest = temp[j].length();
        j++;
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//7th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << "| 16 |";//8th line
    int a = 0;
    for (int i = 16; i < 24; i++)
    {
        int Longest = temp[a].length();
        a++;
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//9th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << "| 24 |";//10th line
    int b = 0;
    for (int i = 24; i < 32; i++)
    {
        int Longest = temp[b].length();
        b++;
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//11th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << "| 32 |";//12th line
    int c = 0;
    for (int i = 32; i < 40; i++)
    {
        int Longest = temp[c].length();
        c++;
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//13th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << "| 40 |";//14th line
    int d = 0;
    for (int i = 40; i < 48; i++)
    {
        int Longest = temp[d].length();
        d++;
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//15th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
        cout << "|";

    cout << endl << "| 48 |";//16th line
    int e = 0;
    for (int i = 48; i < 56; i++)
    {
        int Longest = temp[e].length();
        e++;
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//17th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << "| 56 |";//18th line
    int f = 0;
    for (int i = 56; i < 64; i++)
    {
        int Longest = temp[f].length();
        f++;
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//19th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << "| 64 |";//20th line
    int g = 0;
    for (int i = 64; i < 72; i++)
    {
        int Longest = temp[g].length();
        g++;
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//21th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << "| 72 |";//22th line
    int h=0;
    for (int i = 72; i < 80; i++)
    {
        int Longest = temp[h].length();
        h++;
        int Short = excel[i].length();
        if (excel[i] == "")
        {
            excel[i] = " ";
        }
        WordLength = Longest - Short +1;
        cout << " " << excel[i] << string(WordLength, ' ') << "|";
    }

    cout << endl << "|----";//23th line
    for (int i = 0; i < 8; i++)
    {
        WordLength = temp[i].length();
        if (WordLength == 0)
        {
            WordLength = 1;
        }
        cout << "+" << string(WordLength + 2, '-');
    }
    cout << "|";

    cout << endl << endl;
}

void New()
{
    cout << "New file name ==> ";
    cin >> FileName;
    if (FileName == "Null")
    {
        cout << "Your file name cannot be Null, please create as another file name." << endl;
        Choose();
    }

    for (int i = 0; i < 80; i++) //reset array to blank array
    {
        excel[i] = " ";
    }
    Menu();
    Choose();
}

void Insert()
{
    cout << "Tile Number ==> ";
    cin >> TileNum;
    cout << "Text ==> ";
    cin.ignore();
    getline(cin,Text);
    Space = " ";

    if (excel[TileNum-1] != " ")
    {
        for (int i = 0; i < 10; i++)
        {
            Temp[i] = " ";
        }

        int i = 0;
        size_t pos = 0;
        while ((pos = Text.find(Space)) != string::npos)
        {
            Token = Text.substr(0, pos);
            Temp[i] = Token;
            i++;
            Text.erase(0, pos + Space.length());
        }

        for (int i = 68; i >= (TileNum-1); i--)
        {
            excel[i+11] = excel[i];
            excel[i] = " ";
        }

        for (int i = 0; i < 10; i++)
        {
            excel[TileNum-1] = Temp[i];
            TileNum ++;
        }
    }

    size_t pos = 0;
    Text = Text+" ";
    while ((pos = Text.find(Space)) != string::npos) //(while space is not found will return string::npos, so when found it will not return string::npos)//
    {
        Token = Text.substr(0, pos);//Text.substr(position, length), example: Text = "abc def ghi" , 0 is a, 1 is b. until the length of the abc is 3//
        excel[TileNum-1] = Token;
        TileNum = TileNum +1;
        Text.erase(0, pos + Space.length());//erase from the first position to the size of word + a space//
    }

    for (int i= 0; i<78; i++)
    {
        for(int j = i+1; j<80;j++)
        {
            if ((excel[i] == " ") && (excel[j]!=" "))
            {
                excel [i] = excel[j];
                excel[j] = " ";
                break;
            }
        }
    }

}

void Delete()
{
    cout << "From Tile Number == > ";
    cin >> DelTile1;
    cout << "To Tile Number == > ";
    cin >> DelTile2;

    for (int i = DelTile1-1; i < DelTile2; i++)
    {
        excel[i] = " ";
    }

    for (int i= 0; i<78; i++)
    {
        for(int j = i+1; j<80;j++)
        {
            if ((excel[i] == " ") && (excel[j]!=" "))
            {
                excel [i] = excel[j];
                excel[j] = " ";
                break;
            }
        }
    }

}

void Overwrite()
{
    cout << "Tile Number ==> ";
    cin >> TileNum;
    cout << "Text ==> ";
    cin.ignore();
    getline(cin,Text);
    Space = " ";

    size_t pos = 0;
    Text = Text+" ";
    while ((pos = Text.find(Space)) != string::npos)
    {
        Token = Text.substr(0, pos);
        excel[TileNum-1] = Token;
        TileNum = TileNum +1;
        Text.erase(0, pos + Space.length());
    }

    for (int i= 0; i<78; i++)
    {
        for(int j = i+1; j<80;j++)
        {
            if ((excel[i] == " ") && (excel[j]!=" "))
            {
                excel [i] = excel[j];
                excel[j] = " ";
                break;
            }
        }
    }
}

void Load()
{
    for (int i=0; i<80; i++)
    {
        LoadTile[i] = " ";
    }

    cout << "File name ==>" ;
    cin.ignore();
    getline(cin,LoadName);

    LoadName = LoadName+".txt";
    ifstream Read(LoadName.c_str());
    if (Read.is_open())
    {
        Read.ignore();
        (getline(Read,Line));
        Read.close();
    }

    else
    {
        cout << "No File Loaded.";
    }
    Space = " ";
    int i = 0;
    size_t pos = 0;
    while ((pos = Line.find(Space)) != string::npos)
    {
        Token = Line.substr(0, pos);
        LoadTile[i] = Token;
        i++;
        Line.erase(0, pos + Space.length());
    }
    for (int i = 0; i<80; i++)
    {
        excel[i] = LoadTile[i];
    }
}


void Save()
{
    cout << "File name (enter= "+FileName+".txt) ==> ";
    cin.ignore();
    getline(cin,SaveFile);
    cout << "File saved."<<endl;

    if (SaveFile.empty())
    {
        SaveFile = FileName;
        cout << "File saved."<<endl;
    }
    SaveFile = SaveFile+".txt";
    ofstream Create(SaveFile.c_str());
    for (int i = 0; i < 80; i++)
    {
        Saveas = Saveas + excel[i]+" ";
    }
    Create << Saveas <<endl;
    Create.close();
}

void Copy()
{
    for (int i = 0; i < 10; i++)
    {
        CopyExcel[i] = " ";
    }

    cout << "From Tile Number == > ";
    cin >> CopyTile1;
    cout << "To Tile Number == > ";
    cin >> CopyTile2;
    if (CopyTile2 - CopyTile1 > 10)
    {
        cout << "You can only copy 10 words" <<endl;
        Choose();
    }

    int j = 0;
    for (int i = CopyTile1-1; i < CopyTile2; i++)
    {
        CopyExcel[j]= excel[i];
        j++;
    }
}

void Clipboard()
{
    cout << "Clipboard : " << endl;
    for (int i = 0 ; i < 10; i++)
    {
        cout << CopyExcel[i] << " ";
    }
    cout << endl << endl
    << "------------------------ new screen ------------------------"
    <<endl << endl;

}

void Cut()
{
    for (int i = 0; i < 10; i++)
    {
        CopyExcel[i] = " ";
    }


    cout << "From Tile Number == > ";
    cin >> CopyTile1;
    cout << "To Tile Number == > ";
    cin >> CopyTile2;
    if (CopyTile2 - CopyTile1 > 10)
    {
        cout << "You can only cut 10 words" <<endl;
        Choose();
    }

    int j = 0;
    for (int i = CopyTile1-1; i < CopyTile2; i++)
    {
        CopyExcel[j]= excel[i];
        j++;
    }

        for (int i = CopyTile1-1; i < CopyTile2; i++)
    {
        excel[i] = " ";
    }

    for (int i= 0; i<78; i++)
    {
        for(int j = i+1; j<80;j++)
        {
            if ((excel[i] == " ") && (excel[j]!=" "))
            {
                excel [i] = excel[j];
                excel[j] = " ";
                break;
            }
        }
    }

}

void Paste()
{
    cout << "Tile Number ==> ";
    cin >> TileNum;

    for (int i = 68; i >= (TileNum-1); i--)
        {
            excel[i+11] = excel[i];
            excel[i] = " ";
        }

    for (int i = 0; i < 10; i++)
    {
        excel[TileNum-1] = CopyExcel[i];
        TileNum ++;
    }

    for (int i= 0; i<78; i++)
    {
        for(int j = i+1; j<80;j++)
        {
            if ((excel[i] == " ") && (excel[j]!=" "))
            {
                excel [i] = excel[j];
                excel[j] = " ";
                break;
            }
        }
    }
}

void Find()
{
    cout << "Enter text to find : ";
    cin >> Text;
    for(int i = 0; i < 80; i++)
    {
        if (Text == excel[i])
        {
            excel[i] = "*"+excel[i]+"*";
        }
    }
}

void BeforeUndo()
{
    for (int i = 0; i <10; i++)
    {
        UnCE[i] = CopyExcel[i];
    }

    for (int i=0; i<80 ; i++)
    {
        UndoTile[i] = excel[i];
    }
}

void Undo()
{
    for (int i = 0; i<10;i++)
    {
        CopyExcel[i] = UnCE[i];
    }

    for (int i=0; i<80 ; i++)
    {
        excel[i] = UndoTile[i];
    }
}