Put d2c buttons behind waffle flag.

apps/addons/templates/addons/button.html

@@ -12,8 +12,11 @@
   {% if compat %}
      data-min="{{ compat.min.version }}"
      data-max="{{ compat.max.version }}"
-     data-is-compatible="{{ version.is_compatible|json }}"
-     data-compat-overrides="{{ version.compat_override_app_versions()|json }}"
+     {% if waffle.switch('d2c-buttons') %}
+       data-waffle-d2c-buttons="true"
+       data-is-compatible="{{ version.is_compatible|json }}"
+       data-compat-overrides="{{ version.compat_override_app_versions()|json }}"
+     {% endif %}
      data-version="{{ version.version }}"
      data-compatible-apps="{{ version.compatible_apps[request.APP] }}"
      data-lastupdated-isotime="{{ version.created|isotime }}"

apps/addons/templates/addons/includes/button_data_attributes.html

@@ -16,8 +16,11 @@
 {% if compat %}
   data-min="{{ compat.min.version }}"
   data-max="{{ compat.max.version }}"
-  data-is-compatible="{{ version.is_compatible|json }}"
-  data-compat-overrides="{{ version.compat_override_app_versions()|json }}"
+  {% if waffle.switch('d2c-buttons') %}
+    data-waffle-d2c-buttons="true"
+    data-is-compatible="{{ version.is_compatible|json }}"
+    data-compat-overrides="{{ version.compat_override_app_versions()|json }}"
+  {% endif %}
 {% endif %}
 {% if addon.is_webapp() %}
   data-manifest-url="{% if (addon.is_premium() and addon.has_purchased(amo_user)) or (not addon.is_premium()) -%}

apps/addons/tests/test_buttons.py

@@ -605,6 +605,7 @@ class TestButtonHtml(ButtonTest):
         assert doc('.install-button').text('Not ready for purchase.')
 
     def test_d2c_attrs(self):
+        waffle.models.Switch.objects.create(name='d2c-buttons', active=True)
         compat = Mock()
         compat.min.version = '4.0'
         compat.max.version = '12.0'

media/js/zamboni/buttons.js

@@ -98,6 +98,7 @@ var installButton = function() {
         accept_eula = $this.hasClass('accept'),
         webapp = $this.hasattr('data-manifest-url'),
         compatible = $this.attr('data-is-compatible') == 'true',
+        waffle_d2c_buttons = $this.hasattr('data-waffle-d2c-buttons'),
         has_overrides = $this.hasattr('data-compat-overrides'),
         // L10n: {0} is an app name like Firefox.
         _s = accept_eula ? gettext('Accept and Install') : gettext('Add to {0}'),
@@ -123,21 +124,25 @@ var installButton = function() {
         newerBrowser = VersionCompare.compareVersions(z.browserVersion, max) > 0;
     }
 
-    // Firefox 10+ is compatible by default.
-    var compatible = compatible && z.browserVersion != 0 &&
+    if (waffle_d2c_buttons) {
+        // Firefox 10+ is compatible by default.
+        compatible = compatible && z.browserVersion != 0 &&
                      VersionCompare.compareVersions(z.browserVersion, '10.0') >= 0;
-    // If it's still compatible, check the overrides.
-    if (compatible && has_overrides) {
-        var overrides = JSON.parse($this.attr('data-compat-overrides'));
-        _.each(overrides, function(override) {
-            var _min = override[0],
-                _max = override[1];
-            if (VersionCompare.compareVersions(z.browserVersion, _min) >= 0 ||
-                VersionCompare.compareVersions(z.browserVersion, _max) <= 0) {
-                compatible = false;
-                return;
-            }
-        });
+        // If it's still compatible, check the overrides.
+        if (compatible && has_overrides) {
+            var overrides = JSON.parse($this.attr('data-compat-overrides'));
+            _.each(overrides, function(override) {
+                var _min = override[0],
+                    _max = override[1];
+                if (VersionCompare.compareVersions(z.browserVersion, _min) >= 0 ||
+                    VersionCompare.compareVersions(z.browserVersion, _max) <= 0) {
+                    compatible = false;
+                    return;
+                }
+            });
+        }
+    } else {
+        compatible = false;  // We always assumed not compatible before.
     }
 
     if (!$body.hasClass('acr-pitch') && newerBrowser && z.hasNightly && !z.hasACR) {

migrations/352-waffle-d2c-buttons.sql

@@ -0,0 +1,2 @@
+INSERT INTO waffle_switch_amo (name, active, note)
+    VALUES ('d2c-buttons', 0, 'If active, this turns on default-to-compatible for the install buttons.');

templates/qunit/qunit.html

@@ -71,6 +71,7 @@
       <div class="install"
            data-min="4.0"
            data-max="5.0"
+           data-waffle-d2c-buttons="true"
            data-is-compatible="true"
            data-compat-overrides="[]">
         <p class="install-button">
@@ -85,6 +86,7 @@
       <div class="install"
            data-min="4.0"
            data-max="5.0"
+           data-waffle-d2c-buttons="true"
            data-is-compatible="true"
            data-compat-overrides="{{ [['10.0a1', '99.*']]|json }}">
         <p class="install-button">
@@ -99,6 +101,7 @@
       <div class="install"
            data-min="4.0"
            data-max="5.0"
+           data-waffle-d2c-buttons="true"
            data-is-compatible="false"
            data-compat-overrides="[]">
         <p class="install-button">