#include "cmdline.h"
#include "printdata.h"

#include <iostream>
#include <iomanip>

using namespace std;


int
main(int argc, char *argv[])
{
    // Get database access parameters from command line
    mysqlpp::examples::CommandLine cmdline(argc, argv);
    if (!cmdline) {
        return 1;
    }

    try {
        // Establish the connection to the database server.
        mysqlpp::Connection con(mysqlpp::examples::db_name,
                cmdline.server(), cmdline.user(), cmdline.pass());

        // Get contents of main example table
        mysqlpp::Query query = con.query("select * from stock");
        mysqlpp::StoreQueryResult res = query.store();

        // Show info about each field in that table
        char widths[] = { 12, 22, 46 };
        cout.setf(ios::left);
        cout << setw(widths[0]) << "Field" <<
                setw(widths[1]) << "SQL Type" <<
                setw(widths[2]) << "Equivalent C++ Type" <<
                endl;
        for (size_t i = 0; i < sizeof(widths) / sizeof(widths[0]); ++i) {
            cout << string(widths[i] - 1, '=') << ' ';
        }
        cout << endl;
        
        for (size_t i = 0; i < res.field_names()->size(); i++) {
            // Suppress C++ type name outputs when run under dtest,
            // as they're system-specific.
            const char* cname = res.field_type(int(i)).name();
            mysqlpp::FieldTypes::value_type ft = res.field_type(int(i));
            ostringstream os;
            os << ft.sql_name() << " (" << ft.id() << ')';
            cout << setw(widths[0]) << res.field_name(int(i)).c_str() <<
                    setw(widths[1]) << os.str() <<
                    setw(widths[2]) << cname <<
                    endl;
        }
        cout << endl;

        // Simple type check
        if (res.field_type(0) == typeid(string)) {
            cout << "SQL type of 'item' field most closely resembles "
                    "the C++ string type." << endl;
        }

        // Tricky type check: the 'if' path shouldn't happen because the
        // description field has the NULL attribute.  We need to dig a
        // little deeper if we want to ignore this in our type checks.
        if (res.field_type(5) == typeid(string)) {
            cout << "Should not happen! Type check failure." << endl;
        }
        else if (res.field_type(5) == typeid(mysqlpp::sql_blob_null)) {
            cout << "SQL type of 'description' field resembles "
                    "a nullable variant of the C++ string type." << endl;
        }
        else {
            cout << "Weird: fifth field's type is now " <<
                    res.field_type(5).name() << endl;
            cout << "Did something recently change in resetdb?" << endl;
        }
    }
    catch (const mysqlpp::BadQuery& er) {
        // Handle any query errors
        cerr << "Query error: " << er.what() << endl;
        return -1;
    }
    catch (const mysqlpp::Exception& er) {
        // Catch-all for any other MySQL++ exceptions
        cerr << "Error: " << er.what() << endl;
        return -1;
    }

    return 0;
}
