#include <iostream.h>
#include <stdio.h>
#include <fstream.h>
#include <apstring.h>
#include <iomanip.h>
#include <apvector.h>

void testConstructors();
void testAssignment();
void testAccessors();
void testIndexing();
void testModifiers();
void testgetline();
void testComparisons();
void testConcat();
void testSort();
void selectionSort(apvector<apstring>list);
void testExtract();

int main()
{
        testConstructors();
        cin.get();
        testAssignment();
        cin.get();
        testAccessors();
        cin.get();
        testIndexing();
        cin.get();
        testModifiers();
        cin.get();
        testgetline();
        cin.get();
        testComparisons();
        cin.get();
        testConcat();
        cin.get();
        testSort();
        cin.get();
        testExtract();

        return 0;
}

void testConstructors()
{
        apstring word1("");
        apstring word2("Hello world\0");
		apstring word2("Hello world\n");

        cout<<"Testing constructors"<<endl<<endl;
        cout<<word1<<endl;
        cout<<word2<<endl;
        cout<<word3<<endl<<endl;

}

void testAssignment()
{
        apstring word1 = "Hello world\0";
        apstring word2 = word1;

        cout<<"Testing assignment operators"<<endl<<endl;
        cout<<word1<<endl;
        cout<<word2<<endl;
        cout<<word3<<endl<<endl;
}

void testAccessors()
{
        apstring word1 = "Hello world\0";
        apstring word2 = "Hello";
        apstring word3 = word1.substr(3,4);

        cout<<"Testing string accessors"<<endl<<endl;
        cout<<word1<<endl;
        cout<<word2<<endl;
        cout<<word3<<endl;
        cout<<"Length: "<<word1.length()<<endl;
}

void testIndexing()
{
        apstring word1 = "Hello World";
        
        cout<<"Testing string indexing"<<endl<<endl;
        cout << "Whole word: " << word1 << endl;
		cout << "First letter: " << word1[0] << endl;
		cout << "Last letter: " << word1[word1.length()-1] << endl;
}

void testModifiers()
{
        apstring word1 = "Hello ";
        apstring word2 = "World";
        apstring word3 = word1 + word2;

        cout<<"Testing string modifiers"<<endl<<endl;
        cout<<word1<<endl;
        cout<<word2<<endl;
        cout<<word3<<endl;

}

void testgetline()
{
        apstring word1;

        cout<<"Testing getline"<<endl<<endl;
        cout<<"Enter a string with spaces, commas, whatever: ";
        getline(cin, word1);
        cout<<endl<<word1<<endl<<endl;
}

void testComparisons()
{
        apstring word1 = "HelloWorld";
        apstring word2 = "HelloWorld";
        apstring word3 = "World";
		apstring word4 = "helloworld";

        cout<<"Testing string comparisons"<<endl<<endl;
        cout<<word1<<endl;
        cout<<word2<<endl;
        cout<<word3<<endl;
		cout<<word4<<endl;
        cout<<"word1 / word2 : ";
        if (word1 == word2) cout<<"equal"<<endl;
        else cout<<"not equal"<<endl;

        cout<<"word1 / word4 : ";
        if (word1 == word4) cout<<"equal"<<endl;
        else cout<<"not equal"<<endl;
        
		cout<<"word1 / word3 : ";
        if (word1 < word3) cout<<"word1 < word3"<<endl<<endl;
        else cout<<"word1 > word3"<<endl<<endl;

}

void testConcat()
{
        apstring word1 = "Hello World";
        apstring word2 = word1 + 's';

        cout<<"Testing concatenations"<<endl<<endl;
        cout<<"word1 = "<<word1<<endl;
        cout<<"word2 = "<<word2<<endl<<endl;
}

apvector<apstring>word1(5, "");

void testSort()
{
        char ch;
        
        ifstream infile;

        infile.open("names.txt", ios::in);

        while (infile.get(ch))
        {
                for (int x=0; x < 5; x++)
                {
                        getline(infile, word1[x]);
                }
        }

        cout<<"Testing selection sort"<<endl<<endl;
        cout<<"Before: "<<endl;
        
        for (int y=0; y<5; y++)
        {
                cout<<word1[y]<<endl;
        }
        cout<<endl<<"After: "<<endl;

        selectionSort(word1);

        for (int k=0; k<5; k++)
        {
                cout<<word1[k]<<endl;
        }

}

void selectionSort (apvector<apstring>list)
{
        int flag; 
        apstring temp;
        apstring temp2;

        for (int  outer=0; outer < 5; outer++)
        {
                flag = outer;

                for (int inner=outer+1; inner<=4; inner++)
                {
                        if (list[inner][0] < list[flag][0])
                        {
                                flag = inner;
                        }
                }
                        
                        temp = list[outer];
                        temp2 = list[flag];
                        list[outer] = temp2;
                        list[flag] = temp;
        }
        
        for (int a=0; a<5; a++)
                word1[a] = list[a];
}

void testExtract()
{
        apstring word1 = "hello world";
        apstring word2 = "hello";
        apstring word3 = "programming is fun";
        apstring word1a = "", word2a = "", word3a = "";

        cout<<"Testing extracting first word"<<endl<<endl;

        cout<<"Complete words: "<<endl;
        cout<<word1<<endl;
        cout<<word2<<endl;
        cout<<word3<<endl<<endl;

        for (int x=0; x < 11; x++)
        {
                if (word1[x] == ' ')
                        break;
                else
                        word1a += word1[x];
        }

        for (int y=0; y < 5; y++)
        {
                if (word2[y] == ' ')
                        break;
                else
                        word2a += word2[y];
        }

        for (int z=0; z < 18; z++)
        {
                if (word3[z] == ' ')
                        break;
                else
                        word3a += word3[z];
        }


        cout<<"After extracting first word: "<<endl;
        cout<<word1a<<endl;
        cout<<word2a<<endl;
        cout<<word3a<<endl<<endl<<endl;

}