#include "MyString.h"

String::String(){
    string = new char[1];
    string[0] = '\0';
}
String::String(const char*_string){
    string = nullptr;
    setString(_string);
}
String::String(const char _string) {
    string = nullptr;
    setString(_string);
}
String::~String(){
    delete[]string;
}
String::String(const String& other){
    setString(other.getString());
}
String& String::operator=(const String& other){
    if (this == &other) {
        return *this;
    }
    setString(other.getString());
    return *this;
}
String& String::operator=(const char* other) {
    this->string = nullptr;
    setString(other);
    return *this;
}
char String:: operator[](int index) {
    if (index >= length() || index < 0 || empty()) {
        cout << "ERROR" << endl;
        return '0';
    }
    else {
        return string[index];
    }
}
String operator+(const String& left,const String& right) {
    cout << "length " << left.length() + right.length() << endl;
    char* sum = new char[left.length() + right.length()+1];
    int i_sum = 0;
    for (int i = 0;left.string[i] != '\0';i++, i_sum++) {
        sum[i_sum] = left.string[i];
    }
    for (int i = 0;right.string[i] != '\0';i++, i_sum++) {
        sum[i_sum] = right.string[i];
    }
    cout << i_sum << endl;
    sum[i_sum+1] = '\0';
    cout << sum;
    String result=sum;
    delete[] sum;
    return result;
}
bool operator==(const char* left,const String& right){
    return (strcmp(left, right.getString()) == 0);
}
bool operator==(const String& left, const String& right) {
    return (strcmp(left.getString(), right.getString()) == 0);
}
bool operator==(const String& left, const char* right) {
    return (strcmp(left.getString(), right) == 0);
}
//
bool operator!=(const char* left, const String& right) {
    return (!(strcmp(left, right.getString()) == 0));
}
bool operator!=(const String& left, const String& right) {
    return (!(strcmp(left.getString(), right.getString()) == 0));
}
bool operator!=(const String& left, const char* right) {
    return (!(strcmp(left.getString(), right) == 0));
}
//
bool operator>(const String& left,const String& right){
    for (int i = 0;left.getString()[i] != '\0' && right.getString()[i] != '\0';i++) {
        if (left.getString()[i] != right.getString()[i]) {
            if (left.getString()[i] > right.getString()[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return false;
}
bool operator>(const char* left, const String& right) {
    for (int i = 0;left[i] != '\0' && right.getString()[i] != '\0';i++) {
        if (left[i] != right.getString()[i]) {
            if (left[i] > right.getString()[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return false;
}
bool operator>(const String& left, const char* right) {
    for (int i = 0;left.getString()[i] != '\0' && right[i] != '\0';i++) {
        if (left.getString()[i] != right[i]) {
            if (left.getString()[i] > right[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return false;
}
//
bool operator<(const String& left, const String& right) {
    for (int i = 0;left.getString()[i] != '\0' && right.getString()[i] != '\0';i++) {
        if (left.getString()[i] != right.getString()[i]) {
            if (left.getString()[i] < right.getString()[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return false;
}
bool operator<(const char* left, const String& right) {
    for (int i = 0;left[i] != '\0' && right.getString()[i] != '\0';i++) {
        if (left[i] != right.getString()[i]) {
            if (left[i] < right.getString()[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return false;
}
bool operator<(const String& left, const char* right) {
    for (int i = 0;left.getString()[i] != '\0' && right[i] != '\0';i++) {
        if (left.getString()[i] != right[i]) {
            if (left.getString()[i] < right[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return false;
}
//
bool operator>=(const String& left, const String& right) {
    for (int i = 0;left.getString()[i] != '\0' && right.getString()[i] != '\0';i++) {
        if (left.getString()[i] != right.getString()[i]) {
            if (left.getString()[i] > right.getString()[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return true;
}
bool operator>=(const char* left, const String& right) {
    for (int i = 0;left[i] != '\0' && right.getString()[i] != '\0';i++) {
        if (left[i] != right.getString()[i]) {
            if (left[i] > right.getString()[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return true;
}
bool operator>=(const String& left, const char* right) {
    for (int i = 0;left.getString()[i] != '\0' && right[i] != '\0';i++) {
        if (left.getString()[i] != right[i]) {
            if (left.getString()[i] > right[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return true;
}
//
bool operator<=(const String& left, const String& right) {
    for (int i = 0;left.getString()[i] != '\0' && right.getString()[i] != '\0';i++) {
        if (left.getString()[i] != right.getString()[i]) {
            if (left.getString()[i] < right.getString()[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return true;
}
bool operator<=(const char* left, const String& right) {
    for (int i = 0;left[i] != '\0' && right.getString()[i] != '\0';i++) {
        if (left[i] != right.getString()[i]) {
            if (left[i] < right.getString()[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return true;
}
bool operator<=(const String& left, const char* right) {
    for (int i = 0;left.getString()[i] != '\0' && right[i] != '\0';i++) {
        if (left.getString()[i] != right[i]) {
            if (left.getString()[i] < right[i]) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return true;
}
void String::setString(const char*_string) {
    delete[] this-> string;
    this->string = new char[strlen(_string) +1];
    strcpy_s(this->string, strlen(_string) + 1, _string);
}
void String::setString(const char _string) {
    delete[] string;
    string = new char[2];
    string[0] = _string;
    string[1] = '\0';
}
const char* String::getString()const {
    return string;
}
void String::append(const char* add) {
    char* result = new char[strlen(string) + strlen(add) +1];
    int i_result = 0;
    for (int i = 0;string[i] != '\0';i++,i_result++) {
        result[i_result] = string[i];
    }
    for (int i = 0;add[i] != '\0';i++, i_result++) {
        result[i_result] = add[i];
    }
    result[i_result] = '\0';
    setString(result);
    delete[]result;

}
void String::append(const char add) {
    char* result = new char[strlen(string) + 2];
    int i_result = 0;
    for (int i = 0;string[i] != '\0';i++, i_result++) {
        result[i_result] = string[i];
    }
    result[i_result] = add;
    result[i_result + 1] = '\0';
    setString(result);
    delete[]result;
}
void String::print()const {
    cout << string << endl;
}
int String::length()const {
    return strlen(string);
}
bool String::empty()const {
    if (length() == 0) {
        return true;
    }
    else {
        return false;
    }
}
const char* String::c_str()const {
    return string;
}
istream& operator>>(istream& in, String& _string) {
    char input[250];
    in >> input;
    _string = input;
    return in;
}
ostream& operator<<(ostream& out, const String& _string) {
    out<<_string.string;
    return out;
}