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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
this.EXPORTED_SYMBOLS = ["LaterRun"];
Cu.import("resource://gre/modules/Preferences.jsm");
Cu.import("resource://gre/modules/Services.jsm");
const kEnabledPref = "browser.laterrun.enabled";
const kPagePrefRoot = "browser.laterrun.pages.";
// Number of sessions we've been active in
const kSessionCountPref = "browser.laterrun.bookkeeping.sessionCount";
// Time the profile was created at:
const kProfileCreationTime = "browser.laterrun.bookkeeping.profileCreationTime";
// After 50 sessions or 1 month since install, assume we will no longer be
// interested in showing anything to "new" users
const kSelfDestructSessionLimit = 50;
const kSelfDestructHoursLimit = 31 * 24;
class Page {
constructor({pref, minimumHoursSinceInstall, minimumSessionCount, requireBoth, url}) {
this.pref = pref;
this.minimumHoursSinceInstall = minimumHoursSinceInstall || 0;
this.minimumSessionCount = minimumSessionCount || 1;
this.requireBoth = requireBoth || false;
this.url = url;
}
get hasRun() {
return Preferences.get(this.pref + "hasRun", false);
}
applies(sessionInfo) {
if (this.hasRun) {
return false;
}
if (this.requireBoth) {
return sessionInfo.sessionCount >= this.minimumSessionCount &&
sessionInfo.hoursSinceInstall >= this.minimumHoursSinceInstall;
}
return sessionInfo.sessionCount >= this.minimumSessionCount ||
sessionInfo.hoursSinceInstall >= this.minimumHoursSinceInstall;
}
}
let LaterRun = {
init() {
if (!this.enabled) {
return;
}
// If this is the first run, set the time we were installed
if (!Preferences.has(kProfileCreationTime)) {
// We need to store seconds in order to fit within int prefs.
Preferences.set(kProfileCreationTime, Math.floor(Date.now() / 1000));
}
this.sessionCount++;
if (this.hoursSinceInstall > kSelfDestructHoursLimit ||
this.sessionCount > kSelfDestructSessionLimit) {
this.selfDestruct();
}
},
// The enabled, hoursSinceInstall and sessionCount properties mirror the
// preferences system, and are here for convenience.
get enabled() {
return Preferences.get(kEnabledPref, false);
},
set enabled(val) {
let wasEnabled = this.enabled;
Preferences.set(kEnabledPref, val);
if (val && !wasEnabled) {
this.init();
}
},
get hoursSinceInstall() {
let installStamp = Preferences.get(kProfileCreationTime, Date.now() / 1000);
return Math.floor((Date.now() / 1000 - installStamp) / 3600);
},
get sessionCount() {
if (this._sessionCount) {
return this._sessionCount;
}
return this._sessionCount = Preferences.get(kSessionCountPref, 0);
},
set sessionCount(val) {
this._sessionCount = val;
Preferences.set(kSessionCountPref, val);
},
// Because we don't want to keep incrementing this indefinitely for no reason,
// we will turn ourselves off after a set amount of time/sessions (see top of
// file).
selfDestruct() {
Preferences.set(kEnabledPref, false);
},
// Create an array of Page objects based on the currently set prefs
readPages() {
// Enumerate all the pages.
let allPrefsForPages = Services.prefs.getChildList(kPagePrefRoot);
let pageDataStore = new Map();
for (let pref of allPrefsForPages) {
let [slug, prop] = pref.substring(kPagePrefRoot.length).split(".");
if (!pageDataStore.has(slug)) {
pageDataStore.set(slug, {pref: pref.substring(0, pref.length - prop.length)});
}
let defaultPrefValue = 0;
if (prop == "requireBoth" || prop == "hasRun") {
defaultPrefValue = false;
} else if (prop == "url") {
defaultPrefValue = "";
}
pageDataStore.get(slug)[prop] = Preferences.get(pref, defaultPrefValue);
}
let rv = [];
for (let [, pageData] of pageDataStore) {
if (pageData.url) {
let uri = null;
try {
let urlString = Services.urlFormatter.formatURL(pageData.url.trim());
uri = Services.io.newURI(urlString);
} catch (ex) {
Cu.reportError("Invalid LaterRun page URL " + pageData.url + " ignored.");
continue;
}
if (!uri.schemeIs("https")) {
Cu.reportError("Insecure LaterRun page URL " + uri.spec + " ignored.");
} else {
pageData.url = uri.spec;
rv.push(new Page(pageData));
}
}
}
return rv;
},
// Return a URL for display as a 'later run' page if its criteria are matched,
// or null otherwise.
// NB: will only return one page at a time; if multiple pages match, it's up
// to the preference service which one gets shown first, and the next one
// will be shown next startup instead.
getURL() {
if (!this.enabled) {
return null;
}
let pages = this.readPages();
let page = pages.find(p => p.applies(this));
if (page) {
Services.prefs.setBoolPref(page.pref + "hasRun", true);
return page.url;
}
return null;
},
};
LaterRun.init();
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