From e01f57a3d98943954372110dc75e8d731fbacc10 Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <noreply@fakecake.org>
Date: Sun, 26 Feb 2017 13:12:33 +0300
Subject: further offline improvements

---
 js/index.js   | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-----
 js/offline.js | 63 +++++++++++++++++++++++++++++++++-------
 js/read.js    | 10 +++++--
 3 files changed, 144 insertions(+), 21 deletions(-)

(limited to 'js')

diff --git a/js/index.js b/js/index.js
index e76be90..95615a2 100644
--- a/js/index.js
+++ b/js/index.js
@@ -1,13 +1,91 @@
-function offline_cache(elem) {
-	try {
+function mark_offline_books() {
+	var elems = $(".offline_dropitem");
+
+	$.each(elems, function (i, elem) {
 		var bookId = elem.getAttribute("data-book-id");
+		var cacheId = "epube-book." + bookId;
+
+		localforage.getItem(cacheId).then(function(book) {
+			if (book) {
+
+				elem.onclick = function() {
+					offline_remove(elem, function() {
+						mark_offline_books();
+					});
+				};
+
+				elem.innerHTML = "Remove offline data";
+
+
+			} else {
+				elem.onclick = function() {
+					offline_cache(bookId, function() {
+						mark_offline_books();
+					});
+				};
+
+				elem.innerHTML = "Make available offline";
+			}
+		});
+	});
+}
+
+function offline_cache(bookId, callback) {
+	console.log("offline cache: " + bookId);
+
+	$.post("backend.php", {op: "getinfo", id: bookId}, function(data) {
+
+		if (data) {
+			var cacheId = 'epube-book.' + bookId;
+
+			localforage.setItem(cacheId, data).then(function(data) {
+
+				console.log(cacheId + ' got data');
+
+				fetch('getbook/' + data.epub_id + ".epub", {credentials: 'same-origin'}).then(function(resp) {
+					if (resp.status == 200) {
+						console.log(cacheId + ' got book');
+
+						callback();
+
+						localforage.setItem(cacheId + '.book', resp.blob());
+					}
+				});
+
+				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 + '.pagination', JSON.parse(text));
+						});
+					}
+				});
+
+				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) {
+
+					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());
+						}
 
-		console.log(bookId);
+					});
 
+				}
 
-		return false;
+			});
+		}
 
-	} catch (e) {
-		console.warn(e);
-	}
+	});
 }
diff --git a/js/offline.js b/js/offline.js
index d9bed0b..d1c49d6 100644
--- a/js/offline.js
+++ b/js/offline.js
@@ -1,23 +1,64 @@
-var CACHE_NAME = "epube-test";
-
 function populate_list() {
 
 	var books = $("#books_container");
+	books.html("");
 
-	window.caches.open(CACHE_NAME).then(function(cache) {
-		cache.keys().then(function(items) {
+	localforage.iterate(function(value, key, i) {
+		if (key.match(/epube-book\.\d{1,}$/)) {
 
-			$.each(items, function(i, req) {
+			Promise.all([
+				localforage.getItem(key),
+				localforage.getItem(key + ".cover")
+			]).then(function(results) {
 
-				if (req.url.match(/\.epub/)) {
-					console.log(req.url);
+				var info = results[0];
+				if (info) {
 
+					var cover = false;
 
-				}
+					if (results && results[1]) {
+						cover = URL.createObjectURL(results[1]);
+					}
 
-			});
+					var cell = "<div class='col-xs-6 col-sm-3 col-md-2 index_cell'>";
 
-		});
-	});
+					cell += "<div class=\"thumb\">";
+					cell += "<a href=\"read.html?id="+info.epub_id+"&b="+info.id+"\"><img data-src=\"holder.js/120x180\"></a>";
+
+					cell += "<div class=\"caption\">";
+					cell += "<div><a href=\"read.html?id="+info.epub_id+"&b="+info.id+"\">" + info.title + "</a></div>";
+					cell += "<div>" + info.author_sort + "</div>";
+
+					if (info.series_name) {
+						cell += "<div>" + info.series_name + " [" + info.series_index + "]</div>";
+					}
+
+					cell += "</div>";
+
+					cell += "<div class=\"dropdown\" style=\"white-space : nowrap\">";
+					cell += "<a href=\"#\" data-toggle=\"dropdown\" role=\"button\">" +
+						"More..." + "<span class=\"caret\"></span></a>";
+
+					cell += "<ul class=\"dropdown-menu\">";
+					cell += "<li><a href=\"#\" data-book-id=\""+info.id+"\" onclick=\"offline_remove(this)\">Remove download</a></li>";
+					cell += "</ul>";
 
+					cell += "</div>";
+
+					cell += "</div>";
+					cell += "</div>";
+
+					var cell = $(cell);
+
+					if (cover) {
+						cell.find("img").attr("src", cover);
+					}
+
+					books.append(cell);
+
+					Holder.run();
+				}
+			});
+		}
+	});
 }
diff --git a/js/read.js b/js/read.js
index 9039826..dc968f4 100644
--- a/js/read.js
+++ b/js/read.js
@@ -111,10 +111,14 @@ function mark_as_read() {
 
 function save_and_close() {
 	if (navigator.onLine) {
-		var curPage = book.pagination.pageFromCfi(book.getCurrentLocationCfi());
+		var currentPage = book.pagination.pageFromCfi(book.getCurrentLocationCfi());
+		var currentCfi = book.getCurrentLocationCfi();
 
-		$.post("backend.php", { op: "storelastread", id: $.urlParam("id"), page: curPage,
-			cfi: book.getCurrentLocationCfi() }, function(data) {
+		localforage.setItem("epube-book." + $.urlParam("b") + ".lastread",
+			{cfi: currentCfi, page: currentPage});
+
+		$.post("backend.php", { op: "storelastread", id: $.urlParam("id"), page: currentPage,
+			cfi: currentCfi }, function(data) {
 				window.location = "index.php";
 			});
 	} else {
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