add share link at /m/, add share dialog in view menu, fix preview for documents

static/mobile/js/utils.js

@@ -0,0 +1,160 @@
+
+const parseDuration = function(string) {
+    return string.split(':').reverse().slice(0, 4).reduce(function(p, c, i) {
+        return p + (parseFloat(c) || 0) * (i == 3 ? 86400 : Math.pow(60, i));
+    }, 0);
+};
+
+const formatDuration = function(seconds) {
+    var parts = [
+        parseInt(seconds / 86400),
+        parseInt(seconds % 86400 / 3600),
+        parseInt(seconds % 3600 / 60),
+        s = parseInt(seconds % 60)
+    ]
+    return parts.map(p => { return p.toString().padStart(2, '0')}).join(':')
+}
+
+const typeOf = function(value) {
+    return Object.prototype.toString.call(value).slice(8, -1).toLowerCase();
+};
+const isUndefined = function(value) {
+    return typeOf(value) == 'undefined';
+}
+const isNumber = function(value) {
+    return typeOf(value) == 'number';
+};
+const isObject = function(value) {
+    return typeOf(value) == 'object';
+};
+const isNull = function(value) {
+    return typeOf(value) == 'null';
+};
+const isString = function(value) {
+    return typeOf(value) == 'string';
+};
+const isEmpty = function(value) {
+    var type = typeOf(value)
+    if (['arguments', 'array', 'nodelist', 'string'].includes(value)) {
+        return value.length == 0
+    }
+    if (['object', 'storage'].includes(type)) {
+        return Object.keys(value).length;
+    }
+    return false
+};
+const mod = function(number, by) {
+    return (number % by + by) % by;
+};
+
+const getObjectById = function(array, id) {
+    return array.filter(obj => { return obj.id == id})[0]
+}
+
+const debug = function() {
+    if (localStorage.debug) {
+        console.log.apply(null, arguments)
+    }
+};
+
+const canPlayMP4 = function() {
+    var video = document.createElement('video');
+    if (video.canPlayType && video.canPlayType('video/mp4; codecs="avc1.42E01E, mp4a.40.2"').replace('no', '')) {
+        return true
+    }
+    return false
+};
+
+const canPlayWebm = function() {
+    var video = document.createElement('video');
+    if (video.canPlayType && video.canPlayType('video/webm; codecs="vp8, vorbis"').replace('no', '')) {
+        return true
+    }
+    return false
+};
+
+const getFormat = function() {
+    //var format = canPlayWebm() ? "webm" : "mp4"
+    var format = canPlayMP4() ? "mp4" : "webm"
+    return format
+}
+
+const safeDocumentName = function(name) {
+    ['\\?', '#', '%', '/'].forEach(function(c) {
+        var r = new RegExp(c, 'g')
+        name = name.replace(r, '_');
+    })
+    return name;
+};
+
+const getVideoInfo = function() {
+    console.log("FIXME implement getvideoInfo")
+}
+
+const isIOS = /(iPad|iPhone|iPod)/g.test(navigator.userAgent);
+
+
+const getLink = function(fragment) {
+    if (document.location.hash.length > 2) {
+        return '#' + fragment
+    } else {
+        return '/m/' + fragment
+    }
+}
+
+const clickLink = function(event) {
+    var a = event.target
+    while (a && a.tagName != 'A') {
+        a = a.parentElement
+    }
+    if (!a) {
+        return
+    }
+    var href = a.attributes.href.value
+    var prefix = document.location.protocol + '//' + document.location.hostname
+    if (href.startsWith(prefix)) {
+        href = href.slice(prefix.length)
+    }
+    if (href.startsWith('/')) {
+        event.preventDefault()
+        event.stopPropagation()
+        var link = href.split('#embed')[0]
+        if (document.location.hash.length > 2) {
+            if (link.startsWith('/m')) {
+                link = link.slice(2)
+            }
+            document.location.hash = '#' + link.slice(1)
+        } else {
+            if (!link.startsWith('/m')) {
+                link = '/m' + link
+            }
+            history.pushState({}, '', link);
+            render()
+        }
+    }
+}
+
+const getUid = (function() {
+    var uid = 0;
+    return function() {
+        return ++uid;
+    };
+}());
+
+
+const getVideoURLName = function(id, resolution, part, track, streamId) {
+    return id + '/' + resolution + 'p' + part + (track ? '.' + track : '')
+        + '.' + pandora.format  + (streamId ? '?' + streamId : '');
+};
+
+const getVideoURL = function(id, resolution, part, track, streamId) {
+    var uid = getUid(),
+        prefix = pandora.site.site.videoprefix
+            .replace('{id}', id)
+            .replace('{part}', part)
+            .replace('{resolution}', resolution)
+            .replace('{uid}', uid)
+            .replace('{uid42}', uid % 42);
+    return prefix + '/' + getVideoURLName(id, resolution, part, track, streamId);
+};
+