#include "askpassword.h"
#include "globals.h"
#include <string.h>
#include <QInputDialog>
#include <QThread>
#include "accounts.h"

QMutex AskPassword::passwd_mutex;
char AskPassword::current_password[256];
int AskPassword::is_invalid = 0;
int AskPassword::is_cancelled = 0;
int AskPassword::is_set = 0;

AskPassword::AskPassword(QObject *parent) :
    QObject(parent)
{
    connect(this,SIGNAL(password_requested()),this,SLOT(password_dialog()), Qt::BlockingQueuedConnection);
}

AskPassword::~AskPassword()
{
    memset(current_password, 0, sizeof(current_password));
}

int AskPassword::ask_password_cb(char *buf, int size, int rwflag, void *userdata)
{
    //QString pswd;
    //QByteArray id = QByteArray((const char*) userdata, PICA_ID_SIZE);

    if (is_cancelled)
        return 0;

    passwd_mutex.lock();

    if (!is_set || is_invalid)
    {
        if (askpassword->thread() != QThread::currentThread())
            askpassword->emit_sig();
        else
            askpassword->password_dialog();
    }

    if (is_set)
    {
        strncpy(buf, current_password, size);
        buf[size - 1] = 0;
    }

    passwd_mutex.unlock();


    return is_set ? (strlen(buf)) : 0;
}

void AskPassword::emit_sig()
{
    emit password_requested();
}

void AskPassword::clear()
{
    passwd_mutex.lock();
    is_invalid = 0;
    is_set  = 0;
    is_cancelled = 0;
    memset(current_password, 0, sizeof(current_password));
    passwd_mutex.unlock();

}

void AskPassword::setInvalidPassword()
{
    passwd_mutex.lock();
    is_invalid = 1;
    memset(current_password, 0, sizeof(current_password));
    passwd_mutex.unlock();
}

void AskPassword::password_dialog()
{
    bool ok = false;
    QString title = is_invalid ? QObject::tr("Invalid passphrase, try again") : QObject::tr("Enter private key passphrase");
    QString text = QObject::tr(QString("Passphrase for account %1 \n (%2)")
        .arg(Accounts::GetCurrentAccount().name)
        .arg(Accounts::GetCurrentAccount().id.toBase64().constData()).toUtf8().constData());
    QString psw = QInputDialog::getText((QWidget*)mainwindow,title,text,QLineEdit::Password,QString(),&ok);

    if (ok)
    {
        strncpy(current_password, psw.toUtf8().constData(), sizeof(current_password));
        current_password[sizeof(current_password) - 1] = 0;
        is_set = 1;
        is_invalid = 0;
    }
    else
        is_cancelled = 1;
}