IASaveRestore/loadState.js at main · CypherpunkArmory/IASaveRestore · GitHub

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(function () {
    try {
        dbVersion = 1;

        var request = indexedDB.open("stateFiles", dbVersion),
            db,
            createObjectStore = function (dataBase) {
                try {
                    console.log("Creating objectStore");
                    dataBase.createObjectStore("states");
                } catch (error) {
                    MyAndroidClient.loadCallback("fail");
                }
            },

            getSaveState = function () {
                try {
                    getSaveStateFromDb();
                } catch (error) {
                    MyAndroidClient.loadCallback("fail");
                }
            },

            getSaveStateFromDb = function () {
                try {
                    console.log("Putting state in IndexedDB");

                    var transaction = db.transaction(["states"], "readwrite");

                    transaction.objectStore("states").get("REPLACE_KEY").onsuccess = function (event) {
                        var stateBytes = event.target.result;
                        try {
                            console.log("Got state: " + stateBytes);
                            FS.mkdirTree("REPLACE_PATH");
                            FS.writeFile("REPLACE_PATH/1.sta",stateBytes);
                            MyAndroidClient.loadCallback("pass");
                        } catch (error) {
                            MyAndroidClient.loadCallback("fail");
                        }
                    };
                } catch (error) {
                    MyAndroidClient.loadCallback("fail");
                }
            };

        request.onerror = function (event) {
            try {
                console.log("Error creating/accessing IndexedDB database");
            } catch (error) {
                MyAndroidClient.loadCallback("fail");
            }
        };

        request.onsuccess = function (event) {
            try {
                console.log("Success creating/accessing IndexedDB database");
                db = request.result;

                db.onerror = function (event) {
                    try {
                        console.log("Error creating/accessing IndexedDB database");
                    } catch (error) {
                        MyAndroidClient.loadCallback("fail");
                    }
                };

                if (db.setVersion) {
                    if (db.version != dbVersion) {
                        var setVersion = db.setVersion(dbVersion);
                        setVersion.onsuccess = function () {
                            try {
                                createObjectStore(db);
                                getSaveState();
                            } catch (error) {
                                MyAndroidClient.loadCallback("fail");
                            }
                        };
                    }
                    else {
                        getSaveState();
                    }
                }
                else {
                    getSaveState();
                }
            } catch (error) {
                MyAndroidClient.loadCallback("fail");
            }
        };

        request.onupgradeneeded = function (event) {
            try {
                createObjectStore(event.target.result);
            } catch (error) {
                MyAndroidClient.loadCallback("fail");
            }
        };

    } catch (error) {
        MyAndroidClient.loadCallback("fail");
    }
})();