Logic for the Data Saver InfoBar Promo

chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java
new file mode 100644
index 0000000000000000000000000000000000000000..2e8c9e3c392d5e579cce4233d9712a008494ab34
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java
@@ -0,0 +1,137 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.infobar;
+
+import android.content.Context;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager.NameNotFoundException;
+
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.preferences.PrefServiceBridge;
+import org.chromium.chrome.browser.preferences.datareduction.DataReductionPromoUtils;
+import org.chromium.content_public.browser.WebContents;
+
+import java.util.Calendar;
+import java.util.TimeZone;
+
+/**
+ * Generates an InfoBar for data reduction proxy promotion that contains a message and button to
+ * enable the proxy.
+ */
+public class DataReductionPromoInfoBar {
+    private static final String HTTP_SCHEME = "http://";

[bengr, 2016/06/02 23:02:11]

Use:
https://code.google.com/p/chromium/codesearch#chromium/src/chrome/android/jav...

[megjablon, 2016/06/03 23:04:56]

Done.

+
+    private static String sTitle;
+    private static String sText;
+    private static String sPrimaryButtonText;
+    private static String sSecondaryButtonText;
+
+    /**
+     * Launch the data reduction InfoBar Promo, if it needs to be displayed.
+     *
+     * @param context An Android context.
+     * @param webContents The WebContents of the tab on which the InfoBar should show.
+     * @param url The URL of the page on which the InfoBar should show.
+     */
+    public static void maybeLaunchDataReductionPromoInfoBar(Context context,
+            WebContents webContents, String url) {
+        if (!DataReductionPromoUtils.canShowDataReductionPromos()) return;
+
+        // Don't show the promo if the user is not part of the field trial.
+        if (!DataReductionPromoUtils.getDataReductionInfoBarPromoFieldTrialEnabled()) return;

[bengr, 2016/06/02 23:02:11]

Shouldn't this just be part of the second run promo field trial? What's the
point of separating it out?

[megjablon, 2016/06/03 23:04:56]

Done.

+
+        // Only show the promo on HTTP pages.
+        if (!url.startsWith(HTTP_SCHEME)) return;

[bengr, 2016/06/02 23:02:11]

Use this instead:
https://code.google.com/p/chromium/codesearch#chromium/src/net/android/java/s...

[megjablon, 2016/06/03 23:04:56]

Done.

+
+        // Don't show the InfoBar promo if neither the FRE or second run promo have been shown.
+        if (!DataReductionPromoUtils.getDisplayedDataReductionPromo()) return;
+
+        // Don't show the promo if the user opted out on the FRE card.
+        if (DataReductionPromoUtils.getDataReductionFrePromoOptOut()) return;
+
+        // Don't show the promo if the user has opted out of this InfoBar promo before.
+        if (DataReductionPromoUtils.getDataReductionInfoBarPromoOptOut()) return;
+
+        int current_build = getBuildFromVersionNumber(
+                PrefServiceBridge.getInstance().getAboutVersionStrings().getApplicationVersion());
+        int promo_build = getBuildFromVersionNumber(
+                DataReductionPromoUtils.getDisplayedDataReductionPromoVersion());
+        int infobar_promo_build = getBuildFromVersionNumber(
+                DataReductionPromoUtils.getDisplayedDataReductionInfoBarPromoVersion());
+
+        PackageInfo packageInfo;
+        try {
+            packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
+        } catch (NameNotFoundException e) {
+            packageInfo = null;
+        }
+        Calendar m48ReleaseDateCal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+        m48ReleaseDateCal.set(2016, 1, 26);
+        long m48ReleaseDate = m48ReleaseDateCal.getTimeInMillis();
+        long firstInstallTime = packageInfo == null ? 0 : packageInfo.firstInstallTime;
+
+        // The boolean pref storing if the user opted out on the FRE promo was added in 51. Don't
+        // show the infobar for FRE promos that were shown for builds 48 to 51.
+        if (promo_build < 51 && firstInstallTime > m48ReleaseDate) return;
+
+        // Only show the promo if the current version is at least two builds after the last promo
+        // was displayed.
+        if (current_build < promo_build + 2) return;
+
+        // Only show the promo if the current version is at least two builds after the last infobar
+        // promo was displayed.
+        if (DataReductionPromoUtils.getDisplayedDataReductionInfoBarPromo()
+                && (current_build < infobar_promo_build + 2)) {
+            return;
+        }
+
+        DataReductionPromoInfoBar.launch(webContents,
+                context.getString(R.string.data_reduction_promo_infobar_title),
+                context.getString(R.string.data_reduction_promo_infobar_text),
+                context.getString(R.string.data_reduction_promo_infobar_button),
+                context.getString(R.string.no_thanks));
+    }
+
+    private static int getBuildFromVersionNumber(String version) {
+        if (version.isEmpty()) {
+            return -1;
+        }
+
+        version = version.replaceAll("[^\\d.]", "");
+
+        // Parse out the version numbers.
+        String[] pieces = version.split("\\.");
+        if (pieces.length != 4) {
+            return -1;
+        }
+
+        try {
+            return Integer.parseInt(pieces[0]);
+        } catch (NumberFormatException e) {
+            return -1;
+        }
+    }
+
+    /**
+     * Launch a data reduction proxy {@link InfoBar} with the specified title and link
+     * text. Clicking the link will open the specified settings page.
+     * @param webContents The {@link WebContents} in which to open the {@link InfoBar}.
+     * @param title The text to display in the {@link InfoBar}.
+     * @param primaryButtonText
+     * @param secondaryButtonText
+     */
+    public static void launch(WebContents webContents,
+            String title,
+            String text,
+            String primaryButtonText,
+            String secondaryButtonText) {
+        sTitle = title;
+        sText = text;
+        sPrimaryButtonText = primaryButtonText;
+        sSecondaryButtonText = secondaryButtonText;
+        // TODO(megjablon): Show infobar.
+        DataReductionPromoUtils.saveDataReductionInfoBarPromoDisplayed();
+    }
+}