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/**
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* This file is part of Haketilo.
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*
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* Function: Haketilo's preview of a file kept in IndexedDB.
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*
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* Copyright (C) 2022 Wojtek Kosior
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* As additional permission under GNU GPL version 3 section 7, you
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* may distribute forms of that code without the copy of the GNU
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* GPL normally required by section 4, provided you include this
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* license notice and, in case of non-source distribution, a URL
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* through which recipients can access the Corresponding Source.
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* If you modify file(s) with this exception, you may extend this
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* exception to your version of the file(s), but you are not
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* obligated to do so. If you do not wish to do so, delete this
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* exception statement from your version.
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*
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* As a special exception to the GPL, any HTML file which merely
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* makes function calls to this code, and for that purpose
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* includes it by reference shall be deemed a separate work for
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* copyright law purposes. If you modify this code, you may extend
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* this exception to your version of the code, but you are not
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* obligated to do so. If you do not wish to do so, delete this
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* exception statement from your version.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* I, Wojtek Kosior, thereby promise not to sue for violation of this file's
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* license. Although I request that you do not make use of this code in a
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* proprietary program, I am not going to enforce this in court.
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*/
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#IMPORT common/indexeddb.js AS haketilodb
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#FROM html/DOM_helpers.js IMPORT by_id
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const error_msg = by_id("error_msg"), info_msg = by_id("info_msg");
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function error(msg) {
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info_msg.remove();
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error_msg.classList.remove("hide");
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error_msg.innerText = msg;
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}
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async function show_preview(hash_key) {
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const db = await haketilodb.get();
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const file = await haketilodb.idb_get(db.transaction("file"),
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"file", hash_key);
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if (file === undefined) {
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error("Couldn't find file in Haketilo's internal database :(");
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} else {
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const blobby_opts = {type: "text/plain;charset=UTF-8"};
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const blobby = new Blob([file.contents], blobby_opts);
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location.replace(URL.createObjectURL(blobby));
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}
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}
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const match = /^[^#]*#(.*)$/.exec(document.URL);
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if (!match) {
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error("Bad URL :(");
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} else {
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const hash_key = match[1];
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show_preview(hash_key);
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}
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