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#include <QtCore/QRegExp>
#include <QtCore/QDateTime>
#include <QtCore/QDir>
#include <QtCore/QDebug>
#include <QtSql/QSqlQuery>
#include <QtSql/QSqlError>
#include "global.h"
#include "action.h"
#include "fetchboardconfigaction.h"
#include "fetchforumsaction.h"
#include "xmlrpcinterface.h"
#include "board.h"
Board::Board(const QString& forumUrl, QObject *parent) :
QObject(parent), _url(forumUrl), _slug(createSlug(forumUrl)),
_db(QSqlDatabase::addDatabase("QSQLITE", _slug)),
_iface(new XmlRpcInterface(QUrl(_url), this))
{
_db.setDatabaseName(QDir::toNativeSeparators(getDbPathFor(_slug)));
qDebug() << "Opening database file" << _db.databaseName() << "for" << _url;
if (!_db.open()) {
qWarning() << "Could not open database file" << _db.databaseName() << ":"
<< _db.lastError().text();
}
initializeDb();
fetchConfigIfOutdated();
fetchForumsIfOutdated();
}
void Board::enqueueAction(Action *action)
{
connect(action, SIGNAL(finished(Action*)), SLOT(handleActionFinished(Action*)));
connect(action, SIGNAL(error(Action*,QString)), SLOT(handleActionError(Action*,QString)));
_queue.enqueue(action);
if (_queue.size() == 1) {
// There were no actions queued, so start by executing this one.
executeActionFromQueue();
}
}
QString Board::getConfig(const QString &key) const
{
QSqlQuery query(_db);
query.prepare("SELECT key, value FROM config WHERE key = :key");
query.bindValue(":key", key);
if (!query.exec()) {
qWarning() << "Could not get configuration key:" << key;
return QString();
}
if (query.next()) {
return query.value(1).toString();
}
return QString();
}
void Board::setConfig(const QString &key, const QString &value)
{
QSqlQuery query(_db);
query.prepare("INSERT OR REPLACE INTO config (key, value) VALUES (:key, :value)");
query.bindValue(":key", key);
query.bindValue(":value", value);
if (!query.exec()) {
qWarning() << "Could not set configuration key" << key << ":" << query.lastError().text();
}
notifyConfigChanged();
}
int Board::rootForumId() const
{
QSqlQuery query(_db);
query.exec("SELECT forum_id FROM forums WHERE parent_id = -1");
if (query.next()) {
return query.value(0).toInt();
} else {
return -1;
}
}
void Board::notifyConfigChanged()
{
emit configChanged();
}
void Board::notifyForumsChanged()
{
emit forumsChanged();
}
void Board::notifyForumTopicsChanged(int forumId, int start, int end)
{
qDebug() << "ForumTopics Changed" << forumId << start << end;
emit forumTopicsChanged(forumId, start, end);
}
QString Board::createSlug(const QString &forumUrl)
{
static const QRegExp regexp("[^a-z0-9]+");
QString url = forumUrl.toLower();
url.replace(regexp, "_");
return url;
}
QString Board::getDbDir()
{
QString path;
#ifdef Q_OS_LINUX
char * xdg_cache_dir = getenv("XDG_CACHE_HOME");
if (xdg_cache_dir) {
path = QString::fromLocal8Bit(xdg_cache_dir) + "/tapasboard";
} else {
path = QDir::homePath() + "/.cache/tapasboard";
}
if (!QDir().mkpath(path)) {
qWarning() << "Failed to create directory for databases:" << path;
}
#endif
return path;
}
QString Board::getDbPathFor(const QString &slug)
{
return getDbDir() + "/" + slug + ".sqlite";
}
bool Board::initializeDb()
{
QSqlQuery q(_db);
if (!q.exec("CREATE TABLE IF NOT EXISTS config (key TEXT PRIMARY KEY, value TEXT)")) {
qWarning() << "Could not create config table:" << q.lastError().text();
return false;
}
if (!q.exec("CREATE TABLE IF NOT EXISTS forums (forum_id INTEGER PRIMARY KEY, forum_name TEXT, description TEXT, parent_id INT, logo_url TEXT, new_post BOOL, is_protected BOOL, is_subscribed BOOL, can_subscribe BOOL, url TEXT, sub_only BOOL, sort_index INT UNIQUE)")) {
qWarning() << "Could not create forums table:" << q.lastError().text();
return false;
}
if (!q.exec("CREATE INDEX IF NOT EXISTS forums_parent ON forums (parent_id)")) {
qWarning() << "Could not create forums table:" << q.lastError().text();
return false;
}
if (!q.exec("CREATE TABLE IF NOT EXISTS topics (forum_id INTEGER, topic_id INTEGER PRIMARY KEY, topic_title TEXT, topic_author_id INTEGER, topic_author_name TEXT, is_subscribed BOOL, is_closed BOOL, icon_url TEXT, last_reply_time TEXT, new_post BOOL, last_update_time TEXT)")) {
qWarning() << "Could not create topics table:" << q.lastError().text();
return false;
}
if (!q.exec("CREATE INDEX IF NOT EXISTS topics_forum ON topics (forum_id)")) {
qWarning() << "Could not create topics_forum index:" << q.lastError().text();
return false;
}
if (!q.exec("CREATE INDEX IF NOT EXISTS topics_time ON topics (last_reply_time)")) {
qWarning() << "Could not create topics_time index:" << q.lastError().text();
return false;
}
return true;
}
bool Board::removeFromActionQueue(Action *action)
{
if (_queue.isEmpty()) return false;
Action *head = _queue.head();
if (_queue.removeOne(action)) {
if (!_queue.isEmpty() && head != _queue.head()) {
// The head action was removed; advance the queue.
executeActionFromQueue();
}
action->deleteLater();
return true;
}
return false;
}
void Board::executeActionFromQueue()
{
if (!_queue.empty()) {
Action *head = _queue.head();
head->execute();
}
}
void Board::fetchConfigIfOutdated()
{
if (_iface->isAccessible()) {
// Only fetch if network is accessible and data is >48h old.
QDateTime last_fetch = QDateTime::fromString(
getConfig("last_config_fetch"), Qt::ISODate);
if (!last_fetch.isValid() || last_fetch.daysTo(QDateTime::currentDateTimeUtc()) >= BOARD_CONFIG_TTL) {
enqueueAction(new FetchBoardConfigAction(this));
}
}
}
void Board::fetchForumsIfOutdated()
{
if (_iface->isAccessible()) {
// Only fetch if network is accessible and data is >48h old.
QDateTime last_fetch = QDateTime::fromString(
getConfig("last_forums_fetch"), Qt::ISODate);
if (!last_fetch.isValid() || last_fetch.daysTo(QDateTime::currentDateTimeUtc()) >= BOARD_LIST_TTL) {
enqueueAction(new FetchForumsAction(this));
}
}
}
void Board::handleActionFinished(Action *action)
{
removeFromActionQueue(action);
}
void Board::handleActionError(Action *action, const QString& message)
{
qWarning() << "Action failed:" << message;
removeFromActionQueue(action);
}
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