/*
  Copyright (C) 2018-present evan GmbH.

  This program is free software: you can redistribute it and/or modify it
  under the terms of the GNU Affero General Public License, version 3,
  as published by the Free Software Foundation.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU Affero General Public License for more details.

  You should have received a copy of the GNU Affero General Public License
  along with this program. If not, see http://www.gnu.org/licenses/ or
  write to the Free Software Foundation, Inc., 51 Franklin Street,
  Fifth Floor, Boston, MA, 02110-1301 USA, or download the license from
  the following URL: https://evan.network/license/

  You can be released from the requirements of the GNU Affero General Public
  License by purchasing a commercial license.
  Buying such a license is mandatory as soon as you use this software or parts
  of it on other blockchains than evan.network.

  For more information, please contact evan GmbH at this address:
  https://evan.network/license/
*/
System.register([], function (exports_1, context_1) {
    "use strict";
    var IDBStore, defaultStore;
    var __moduleName = context_1 && context_1.id;
    /**
     * creates a new store or returns the latest one
     *
     * @return     {IDBStore}  idb store
     */
    function getDefaultStore() {
        if (!defaultStore) {
            defaultStore = new IDBStore();
        }
        return defaultStore;
    }
    /**
     * Gets a key from the IDB store.
     *
     * @param      {IDBValidKey}  key     key to load
     * @param      {IDBStore}     store   idb store to load the data from
     * @return     {Type}         returns a key value from idb store
     */
    function get(key, store) {
        if (store === void 0) { store = getDefaultStore(); }
        var req;
        return store
            ._withIDBStore('readonly', function (idbStore) {
            req = idbStore.get(key);
        })
            .then(function () { return req.result; })
            // edge is throwing an exception, when the value is not set
            .catch(function (ex) {
            return undefined;
        });
    }
    exports_1("get", get);
    /**
     * sets a key value in a idb store
     *
     * @param      {IDBValidKEy}  key     key to set the value for
     * @param      {any}          value   value to set
     * @param      {store}        store   idb store to set the value in
     */
    function set(key, value, store) {
        if (store === void 0) { store = getDefaultStore(); }
        return store._withIDBStore('readwrite', function (idbStore) {
            idbStore.put(value, key);
        });
    }
    exports_1("set", set);
    /**
     * delete a key from an idb store
     *
     * @param      {IDBValidKey}  key     key to delete
     * @param      {IDBStore}     store   idb store to delete the data from
     */
    function del(key, store) {
        if (store === void 0) { store = getDefaultStore(); }
        return store._withIDBStore('readwrite', function (idbStore) {
            idbStore.delete(key);
        });
    }
    exports_1("del", del);
    /**
     * Clears an idb store
     *
     * @param      {IDBStore}  store   idb store to clear
     */
    function clear(store) {
        if (store === void 0) { store = getDefaultStore(); }
        return store._withIDBStore('readwrite', function (idbStore) {
            idbStore.clear();
        });
    }
    exports_1("clear", clear);
    /**
     * Gets the keys from an idb store
     *
     * @param      {IDBStore}                store   The store
     * @return     {Promise<IDBValidKey[]>}  keys of the idb
     */
    function keys(store) {
        if (store === void 0) { store = getDefaultStore(); }
        var idbKeys = [];
        return store._withIDBStore('readonly', function (idbStore) {
            // This would be store.getAllKeys(), but it isn't supported by Edge or Safari.
            // And openKeyCursor isn't supported by Safari.
            (store.openKeyCursor || store.openCursor).call(store).onsuccess = function () {
                if (!this.result) {
                    return;
                }
                idbKeys.push(this.result.key);
                this.result.continue();
            };
        }).then(function () { return idbKeys; });
    }
    exports_1("keys", keys);
    return {
        setters: [],
        execute: function () {/*
              Copyright (C) 2018-present evan GmbH.
            
              This program is free software: you can redistribute it and/or modify it
              under the terms of the GNU Affero General Public License, version 3,
              as published by the Free Software Foundation.
            
              This program is distributed in the hope that it will be useful,
              but WITHOUT ANY WARRANTY; without even the implied warranty of
              MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
              See the GNU Affero General Public License for more details.
            
              You should have received a copy of the GNU Affero General Public License
              along with this program. If not, see http://www.gnu.org/licenses/ or
              write to the Free Software Foundation, Inc., 51 Franklin Street,
              Fifth Floor, Boston, MA, 02110-1301 USA, or download the license from
              the following URL: https://evan.network/license/
            
              You can be released from the requirements of the GNU Affero General Public
              License by purchasing a commercial license.
              Buying such a license is mandatory as soon as you use this software or parts
              of it on other blockchains than evan.network.
            
              For more information, please contact evan GmbH at this address:
              https://evan.network/license/
            */
            /**
             * IndexDB store wrapper
             *
             * @class      IDBStore (name)
             */
            IDBStore = /** @class */ (function () {
                /**
                 * @param      {string}  dbName     database name
                 * @param      {string}  storeName  store name within the database
                 */
                function IDBStore(dbName, storeName) {
                    if (dbName === void 0) { dbName = 'keyval-store'; }
                    if (storeName === void 0) { storeName = 'keyval'; }
                    this.storeName = storeName;
                    this._dbp = new Promise(function (resolve, reject) {
                        var openreq = indexedDB.open(dbName, 1);
                        openreq.onerror = function () {
                            reject(openreq.error);
                        };
                        openreq.onsuccess = function () {
                            try {
                                openreq.result.createObjectStore(storeName);
                            }
                            catch (ex) { }
                            resolve(openreq.result);
                        };
                        openreq.onblocked = function (event) {
                            console.log('IndexDB blocked: ');
                            resolve();
                        };
                        // First time setup: create an empty object store
                        openreq.onupgradeneeded = function () {
                            openreq.result.createObjectStore(storeName);
                        };
                    });
                }
                /**
                 * Runs an transaction for within the IDB store
                 *
                 * @param      {IDBTransactionMode}  type      The type
                 * @param      {Function}            callback  callback function, that is called
                 *                                             when the transaction is finished
                 */
                IDBStore.prototype._withIDBStore = function (type, callback) {
                    var _this = this;
                    return this._dbp.then(function (db) { return new Promise(function (resolve, reject) {
                        var transaction = db.transaction(_this.storeName, type);
                        transaction.oncomplete = function () { return resolve(); };
                        transaction.onabort = transaction.onerror = function () { return reject(transaction.error); };
                        callback(transaction.objectStore(_this.storeName));
                    }); });
                };
                return IDBStore;
            }());
            exports_1("IDBStore", IDBStore);
        }
    };
});

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