driver.cpp

#include "./utils/IndexList.h"
#include "./utils/IndexList.cpp"
#include "./constants/checkQuery.cpp"
#include "./constants/tokenizeQuery.cpp"
#include "./utils/TableRecord.cpp"
#include "./utils/TableList.cpp"
#include "./src/import.cpp"
#include "./src/select.cpp"
#include "./src/insert.cpp"
#include "./src/delete.cpp"

void syntaxHelpMenu(){
    cout << "Syntax Help" << endl;
    cout << endl;
    cout << "IMPORT Query" << endl;
    cout << "\t Import <file_name>.csv;" << endl;
    cout << endl;
    cout << "SELECT Query" << endl;
    cout << "\t Select * from <table_name> [Where] [column_name] [operation] [value];" << endl;
    cout << "\t OPTION" << endl;
    cout << "\t\t WHERE => It can be used only on any one column." << endl;
    cout << "\t\t OPERATION => Valid operations are {=, !=, >, <, <=, >=}" << endl;
    cout << endl;
    cout << "INSERT Query" << endl;
    cout << "\t Insert into <table_name> values (data...);" << endl;
    cout << "\t DESCRIPTION" << endl;
    cout << "\t\t DATA => It is comma separated string of the data to be inserted. DO NOT leave a space in the paranthesis." << endl;
    cout << endl;
    cout << "DELETE Query" << endl;
    cout << "\t Delete from <table_name> [Where] [column_name] [operation] [value];" << endl;
    cout << "\t OPTION" << endl;
    cout << "\t\t WHERE => It can be used only on any one column." << endl;
    cout << "\t\t OPERATION => Valid operations are {=, !=, >, <, <=, >=}" << endl;
    cout << endl;
}

int main(){
    cout << "Welcome to EL.db" << endl;
    cout << "EL.db v1.0.0" << endl;
    cout << "Enter \\h for help and \\q to quit." << endl;
    TableList table = TableList();
    char query[500];
    while(true){
        cout << "EL.db> ";
        cin.getline(query, 500);
        string str_query = (string)query;
        if(str_query == "\\q"){
            break;
        }
        else if(str_query == "\\h"){
            syntaxHelpMenu();
        }
        else if(checkImportQuery(str_query)){
            handleImportQuery(str_query,&table);
        }
        else if(checkSelectQuery(str_query)){
            handleSelectQuery(str_query);
        }
        else if(checkInsertQuery(str_query)){
            handleInsertQuery(str_query,&table);
        }
        else if(checkDeleteQuery(str_query)){
            handleDeleteQuery(str_query);
        }
        else{
            cout << "Error: Something wrong with your query. Please check the syntax." << endl;
        }
    }
    cout << "********************************" <<endl;
    cout << "*          THANK YOU :)        *" << endl;
    cout << "********************************" <<endl;
    return 0;
}