From 4f07abe65586d66b0000e9b877ce467d71178aa2 Mon Sep 17 00:00:00 2001
From: Mario Vavti <mario@mariovavti.com>
Date: Sun, 26 Feb 2017 21:01:20 +0100
Subject: add a minversion to the theme and fallback to default if requirement
 is not met. mark incompatible themes in the theme selector

---
 Zotlabs/Module/Admin/Site.php       |  9 ++++++++-
 Zotlabs/Module/Admin/Themes.php     |  2 +-
 Zotlabs/Module/Settings/Display.php | 12 +++++++++---
 Zotlabs/Render/Theme.php            |  7 ++++++-
 view/theme/redbasic/.MINVERSION     |  1 +
 view/theme/redbasic/php/theme.php   |  2 +-
 6 files changed, 26 insertions(+), 7 deletions(-)
 create mode 100644 view/theme/redbasic/.MINVERSION

diff --git a/Zotlabs/Module/Admin/Site.php b/Zotlabs/Module/Admin/Site.php
index 829ca71e4..3bb384ec5 100644
--- a/Zotlabs/Module/Admin/Site.php
+++ b/Zotlabs/Module/Admin/Site.php
@@ -163,6 +163,13 @@ class Site {
 			foreach($files as $file) {
 				$vars = '';
 				$f = basename($file);
+
+				$min_version = ((file_exists('view/theme/' . $f . '/.MINVERSION')) ? file_get_contents('view/theme/' . $f . '/.MINVERSION') : 0);
+				if((version_compare($min_version, STD_VERSION, '>=')) || ($min_version == 0)) {
+					$theme_choices[$f] = $theme_choices_mobile[$f] = sprintf(t('%s - (Incompatible)'), $f);
+					continue;
+				}
+
 				if (file_exists($file . '/library'))
 					continue;
 				if (file_exists($file . '/mobile'))
@@ -310,4 +317,4 @@ class Site {
 		));
 	}
 
-}
\ No newline at end of file
+}
diff --git a/Zotlabs/Module/Admin/Themes.php b/Zotlabs/Module/Admin/Themes.php
index 63a9a1670..fc908ec8b 100644
--- a/Zotlabs/Module/Admin/Themes.php
+++ b/Zotlabs/Module/Admin/Themes.php
@@ -230,4 +230,4 @@ class Themes {
 
 
 
-}
\ No newline at end of file
+}
diff --git a/Zotlabs/Module/Settings/Display.php b/Zotlabs/Module/Settings/Display.php
index 67cecf1f5..d5be07a81 100644
--- a/Zotlabs/Module/Settings/Display.php
+++ b/Zotlabs/Module/Settings/Display.php
@@ -130,12 +130,19 @@ class Display {
 		if($allowed_themes) {
 			foreach($allowed_themes as $th) {
 				$f = $th;
+
+				$min_version = ((file_exists('view/theme/' . $th . '/.MINVERSION')) ? file_get_contents('view/theme/' . $th . '/.MINVERSION') : 0);
+				if((version_compare($min_version, STD_VERSION, '>=')) || ($min_version == 0)) {
+					$mobile_themes[$f] = $themes[$f] = sprintf(t('%s - (Incompatible)'), $f);
+					continue;
+				}
+
 				$is_experimental = file_exists('view/theme/' . $th . '/experimental');
 				$unsupported = file_exists('view/theme/' . $th . '/unsupported');
 				$is_mobile = file_exists('view/theme/' . $th . '/mobile');
 				$is_library = file_exists('view/theme/'. $th . '/library');
-				$mobile_themes["---"] = t("No special theme for mobile devices");
-	
+				$mobile_themes['---'] = t("No special theme for mobile devices");
+
 				if (!$is_experimental or ($is_experimental && (get_config('experimentals','exp_themes')==1 or get_config('experimentals','exp_themes')===false))){ 
 					$theme_name = (($is_experimental) ?  sprintf(t('%s - (Experimental)'), $f) : $f);
 					if (! $is_library) {
@@ -147,7 +154,6 @@ class Display {
 						}
 					}
 				}
-
 			}
 		}
 
diff --git a/Zotlabs/Render/Theme.php b/Zotlabs/Render/Theme.php
index dadb18051..53bcfe664 100644
--- a/Zotlabs/Render/Theme.php
+++ b/Zotlabs/Render/Theme.php
@@ -69,8 +69,13 @@ class Theme {
 		if(array_key_exists('theme_preview',$_GET))
 			$chosen_theme = $_GET['theme_preview'];
 
-		// Allow theme selection of the form 'theme_name:schema_name'
+		// Check if $chosen_theme is compatible with core. If not fall back to default
+		$min_version = ((file_exists('view/theme/' . $chosen_theme . '/.MINVERSION')) ? file_get_contents('view/theme/' . $chosen_theme . '/.MINVERSION') : 0);
+		if((version_compare($min_version, STD_VERSION, '>=')) || ($min_version == 0)) {
+			$chosen_theme = '';
+		}
 
+		// Allow theme selection of the form 'theme_name:schema_name'
 		$themepair = explode(':', $chosen_theme);
 
 		if($chosen_theme && (file_exists('view/theme/' . $themepair[0] . '/css/style.css') || file_exists('view/theme/' . $themepair[0] . '/php/style.php'))) {
diff --git a/view/theme/redbasic/.MINVERSION b/view/theme/redbasic/.MINVERSION
new file mode 100644
index 000000000..8bbe6cf74
--- /dev/null
+++ b/view/theme/redbasic/.MINVERSION
@@ -0,0 +1 @@
+2.2
diff --git a/view/theme/redbasic/php/theme.php b/view/theme/redbasic/php/theme.php
index 997b59750..0f0c43484 100644
--- a/view/theme/redbasic/php/theme.php
+++ b/view/theme/redbasic/php/theme.php
@@ -3,7 +3,7 @@
 /**
  *   * Name: Redbasic
  *   * Description: Hubzilla standard theme
- * 	 * Version: 1.0
+ *   * Version: 2.0
  *   * Author: Fabrixxm
  *   * Maintainer: Mike Macgirvin
  *   * Maintainer: Mario Vavti
-- 
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