DBOpenRequest.onerror = function(event) {
alert(store.state.tr["Database error: stop private browsing, or update your browser"]);
- callback("error",null);
+ callback("error", null);
};
DBOpenRequest.onsuccess = function() {
db = DBOpenRequest.result;
- callback(null,db);
+ callback(null, db);
db.close();
};
DBOpenRequest.onupgradeneeded = function(event) {
let db = event.target.result;
let objectStore = db.createObjectStore("games", { keyPath: "id" });
- objectStore.createIndex("score", "score"); //to search by game result
+ // To sarch games by score (useful for running games)
+ objectStore.createIndex("score", "score", { unique: false });
+ // To search by date intervals. Two games cannot start at the same time
+ objectStore.createIndex("created", "created", { unique: true });
};
}
}
let transaction = db.transaction("games", "readwrite");
transaction.oncomplete = function() {
- callback(); //everything's fine
+ // Everything's fine
+ callback();
};
transaction.onerror = function(err) {
- callback(err); //duplicate key error (most likely)
+ // Duplicate key error (most likely)
+ callback(err);
};
- let objectStore = transaction.objectStore("games");
- objectStore.add(game);
+ transaction.objectStore("games").add(game);
});
},
});
},
- // Retrieve all local games (running, completed, imported...)
- getAll: function(callback) {
+ // Retrieve (all) running local games
+ getRunning: function(callback) {
dbOperation((err,db) => {
- let objectStore = db.transaction("games").objectStore("games");
+ let objectStore = db
+ .transaction("games", "readonly")
+ .objectStore("games");
+ let index = objectStore.index("score");
+ const range = IDBKeyRange.only("*");
let games = [];
- objectStore.openCursor().onsuccess = function(event) {
+ index.openCursor(range).onsuccess = function(event) {
let cursor = event.target.result;
- // if there is still another cursor to go, keep running this code
- if (cursor) {
+ if (!cursor) callback(games);
+ else {
+ // If there is still another cursor to go, keep running this code
let g = cursor.value;
// Do not retrieve moves or clocks (unused in list mode)
g.movesCount = g.moves.length;
delete g.initime;
games.push(g);
cursor.continue();
- } else callback(games);
+ }
+ };
+ });
+ },
+
+ // Retrieve completed local games
+ getNext: function(upperDt, callback) {
+ dbOperation((err,db) => {
+ let objectStore = db
+ .transaction("games", "readonly")
+ .objectStore("games");
+ let index = objectStore.index("created");
+ const range = IDBKeyRange.upperBound(upperDt);
+ let games = [];
+ index.openCursor(range).onsuccess = function(event) {
+ let cursor = event.target.result;
+ if (!cursor) {
+ // Most recent games first:
+ games = games.sort((g1, g2) => g2.created - g1.created);
+ // TODO: 20 games showed per request is arbitrary
+ callback(games.slice(0, 20));
+ }
+ else {
+ // If there is still another cursor to go, keep running this code
+ let g = cursor.value;
+ if (g.score != "*") {
+ // Do not retrieve moves or clocks (unused in list mode)
+ g.movesCount = g.moves.length;
+ delete g.moves;
+ delete g.clocks;
+ delete g.initime;
+ games.push(g);
+ }
+ cursor.continue();
+ }
};
});
},
remove: function(gameId, callback) {
dbOperation((err,db) => {
if (!err) {
- let transaction = db.transaction(["games"], "readwrite");
+ let transaction = db.transaction("games", "readwrite");
transaction.oncomplete = function() {
callback(); //everything's fine
};