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'use strict';
/* global localforage */
let _dl_progress_timeout;
/* exported cache_refresh */
function cache_refresh(force) {
if ('serviceWorker' in navigator) {
localforage.getItem("epube.cache-timestamp").then(function(stamp) {
const ts = parseInt(new Date().getTime()/1000);
if (force || !stamp || ts - stamp > 3600 * 24 * 7) {
console.log('asking worker to refresh cache');
$(".dl-progress")
.fadeIn()
.html("Loading, please wait...");
navigator.serviceWorker.controller.postMessage("refresh-cache");
localforage.setItem("epube.cache-timestamp", ts);
}
});
}
return false;
}
/* exported toggle_fav */
function toggle_fav(elem) {
const bookId = elem.getAttribute("data-book-id");
if (elem.getAttribute("data-is-fav") == "0" || confirm("Remove favorite?")) {
$.post("backend.php", {op: "togglefav", id: bookId}, function(data) {
if (data) {
let msg = "[Error]";
if (data.status == 0) {
msg = "Add to favorites";
} else if (data.status == 1) {
msg = "Remove from favorites";
}
$(elem).html(msg).attr('data-is-fav', data.status);
/* global index_mode */
if (index_mode == "favorites" && data.status == 0) {
$("#cell-" + bookId).remove();
}
}
});
}
return false;
}
/* global offline_remove */
function mark_offline(elem) {
const bookId = elem.getAttribute("data-book-id");
const cacheId = "epube-book." + bookId;
localforage.getItem(cacheId).then(function(book) {
if (book) {
elem.onclick = function() {
offline_remove(bookId, function() {
mark_offline(elem);
});
return false;
};
elem.innerHTML = "Remove offline data";
} else {
elem.onclick = function() {
offline_cache(bookId, function() {
mark_offline(elem);
});
return false;
};
elem.innerHTML = "Make available offline";
}
});
}
/* exported mark_offline_books */
function mark_offline_books() {
const elems = $(".offline_dropitem");
$.each(elems, function (i, elem) {
mark_offline(elem);
});
}
/* exported show_covers */
function show_covers() {
$("img[data-book-id]").each((i,e) => {
e = $(e);
if (e.attr('data-cover-link')) {
const img = $("<img>")
.on("load", function() {
e.css("background-image", "url(" + e.attr('data-cover-link') + ")")
.fadeIn();
img.attr("src", null);
})
.attr("src", e.attr('data-cover-link'));
} else {
e.attr('src', 'holder.js/130x190?auto=yes').fadeIn();
}
});
Holder.run();
}
function offline_cache(bookId, callback) {
console.log("offline cache: " + bookId);
$.post("backend.php", {op: "getinfo", id: bookId}, function(data) {
if (data) {
const cacheId = 'epube-book.' + bookId;
localforage.setItem(cacheId, data).then(function(data) {
console.log(cacheId + ' got data');
const promises = [];
promises.push(fetch('backend.php?op=download&id=' + data.epub_id, {credentials: 'same-origin'}).then(function(resp) {
if (resp.status == 200) {
console.log(cacheId + ' got book');
callback();
localforage.setItem(cacheId + '.book', resp.blob());
}
}));
promises.push(fetch("backend.php?op=getpagination&id=" + data.epub_id, {credentials: 'same-origin'}).then(function(resp) {
if (resp.status == 200) {
console.log(cacheId + ' got pagination');
resp.text().then(function(text) {
localforage.setItem(cacheId + '.locations', JSON.parse(text));
});
}
}));
promises.push(fetch("backend.php?op=getlastread&id=" + data.epub_id, {credentials: 'same-origin'}).then(function(resp) {
if (resp.status == 200) {
console.log(cacheId + ' got lastread');
resp.text().then(function(text) {
localforage.setItem(cacheId + '.lastread', JSON.parse(text));
});
}
}));
if (data.has_cover) {
promises.push(fetch("backend.php?op=cover&id=" + bookId, {credentials: 'same-origin'}).then(function(resp) {
if (resp.status == 200) {
console.log(cacheId + ' got cover');
localforage.setItem(cacheId + '.cover', resp.blob());
}
}));
}
Promise.all(promises).then(function() {
$(".dl-progress")
.show()
.html("Finished downloading <b>" + data.title + "</b>");
window.clearTimeout(_dl_progress_timeout);
_dl_progress_timeout = window.setTimeout(function() {
$(".dl-progress").fadeOut();
}, 5*1000);
});
});
}
});
}
/* exported show_summary */
function show_summary(elem) {
const id = elem.getAttribute("data-book-id");
$.post("backend.php", {op: 'getinfo', id: id}, function(data) {
const comment = data.comment ? data.comment : 'No description available';
$("#summary-modal .modal-title").html(data.title);
$("#summary-modal .book-summary").html(comment);
$("#summary-modal").modal();
});
return false;
}
/* exported offline_get_all */
function offline_get_all() {
if (confirm("Download all books on this page?")) {
$(".row > div").each(function (i, row) {
const bookId = $(row).attr("id").replace("cell-", "");
const dropitem = $(row).find(".offline_dropitem")[0];
if (bookId) {
const cacheId = 'epube-book.' + bookId;
localforage.getItem(cacheId).then(function(book) {
if (!book) {
offline_cache(bookId, function() {
mark_offline(dropitem);
});
}
});
}
});
}
}
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