Rename tourn -> active_tournament
[ccbs] / bigscreen / ccbs_bigscreen.cpp
index 3b9d6ae..08d2bf2 100644 (file)
@@ -3,6 +3,14 @@
 #include <pqxx/pqxx>
 #include "glwindow.h"
 
+class Tournament {
+public:
+       int id;
+       std::string name;
+};
+
+Tournament active_tournament;
+
 /* A trigger that sets a flag whenever it's trigged. */
 class FlagTrigger : pqxx::trigger {
 private:
@@ -30,14 +38,54 @@ public:
        }
 };
 
+/* A transactor that fetches the current tournament and some information about it. */
+class FetchCurrentTournament : public pqxx::transactor<> {
+private:
+       Tournament *tourn;
+
+public:
+       FetchCurrentTournament(Tournament *tourn) : tourn(tourn) {}
+       void operator() (pqxx::transaction<> &t)
+       {
+               pqxx::result res( t.exec("SELECT * FROM bigscreen.active_tournament NATURAL JOIN tournaments") );
+               try {
+                       pqxx::result::tuple tournament = res.at(0);
+
+                       tourn->id = tournament["tournament"].as(tourn->id);
+                       tourn->name = tournament["tournamentname"].as(tourn->name);
+               } catch (PGSTD::out_of_range &e) {
+                       tourn->id = -1;
+                       tourn->name = "";
+               }
+       }
+};
+
+void init(pqxx::connection &conn)
+{
+       conn.perform(FetchCurrentTournament(&active_tournament));
+
+       if (active_tournament.id == -1) {
+               std::fprintf(stderr, "No active tournament\n");
+       } else {
+               std::fprintf(stderr, "Current tournament is %d (name: '%s')\n",
+                       active_tournament.id, active_tournament.name.c_str());
+       }
+}
+
 void main_loop(pqxx::connection &conn)
 {
+       if (active_tournament.id == -1) {
+               // No active tournament, sleep a second or so and exit
+               sleep(1);
+               return;
+       }
+       
        pqxx::work t(conn, "trx");
 
        // fetch all songs
        pqxx::result res( t.exec("SELECT * FROM songs") );
        for (pqxx::result::const_iterator i = res.begin(); i != res.end(); ++i) {
-               // std::fprintf(stderr, "%s\n", i["title"].c_str());
+               std::fprintf(stderr, "%s\n", i["title"].c_str());
        }
        t.commit();
        
@@ -54,6 +102,7 @@ int main(int argc, char **argv)
                // when active_tournament is changed, we destroy everything and start from scratch
                for ( ;; ) {
                        tournament_changed.reset_flag();
+                       init(conn);
                        do {
                                main_loop(conn);
                                conn.get_notifs();