#include "Version.h"

#include <QStringList>

Version::Version(unsigned val, CompactType)
{
    // e.g. 0.20.6 comes in like this from bitcoind (as an unsigned int): 200600
    const unsigned major = val / 1000000,
                   minor0 = val % 1000000,
                   minor = minor0 / 10000,
                   revision = (minor0 % 10000) / 100;
    *this = Version(major, minor, revision);
}


Version::Version(unsigned maj, unsigned min, unsigned rev)
    : major(maj), minor(min), revision(rev)
{}

QString Version::toString(bool revZeroOk) const
{
    return QString("%1.%2%3").arg(major).arg(minor).arg( revision || revZeroOk ? QString(".%1").arg(revision) : QString() );
}

Version::Version(const QString &s_)
{
    QString s(s_.trimmed());
    if (auto pos = s.indexOf('/'); pos >= 0) {
        // trim everything up to and including the first '/' seen -- such that "MyClient/1.0" -> "1.0"
        s = s.mid(pos+1);
    }
    if (s.startsWith('v', Qt::CaseInsensitive))
        s = s.mid(1); // remove leading 'v' char
    const auto sl = s.split('.').mid(0, 3); // take the first 3 elements of whatever list was generated
    bool ok = false;
    if (sl.length() >= 1) {
        major = sl.at(0).trimmed().toUInt(&ok);
        if (!ok)
            major = 0;
        else if (sl.length() >= 2) {
            minor = sl.at(1).trimmed().toUInt(&ok);
            if (!ok)
                minor = 0;
            else if (sl.length() >= 3) {
                revision = sl.at(2).trimmed().toUInt(&ok);
                if (!ok)
                    revision = 0;
            }
        }
    }
}