[piwik] Add addon config

- Update mentions of .htconfig.php

piwik/README.md

@@ -25,18 +25,20 @@ your ~friendica server and then enter the needed details on the config page
 for the addon.
 
 If you don't want to use the admin panel, you can configure the addon through
-the .htconfig file.
+the config/local.ini.php file.
 
-Open the .htconfig.php file and add "piwik" to the list of activated addons.
+Open the config/local.ini.php file and add "piwik" to the list of activated addons.
 
-    $a->config['system']['addon'] = "piwik, ..."
+    [system]
+	addon = ...,piwik
 
-You have to add 4 more configuration variables for the addon:
+You can change 4 more configuration variables for the addon:
 
-    $a->config['piwik']['baseurl'] = 'example.com/piwik/';
-    $a->config['piwik']['sideid'] = '1';
-    $a->config['piwik']['optout'] = true;
-    $a->config['piwik']['async'] = false;
+    [piwik]
+	baseurl = example.com/piwik/
+    sideid = 1
+    optout = true
+    async = false
 
 Configuration fields
 ---------------------

piwik/config/piwik.ini.php

@@ -0,0 +1,29 @@
+<?php return <<<INI
+
+; Warning: Don't change this file! It only holds the default config values for this addon.
+; Instead overwrite these config values in config/local.ini.php in your Friendica directory
+
+[piwik]
+; baseurl (String)
+; This URL points to your Piwik installation.
+; Use the absolute path, remember trailing slashes but ignore the protocol (http/s) part of the URL.
+; Example: baseurl = example.com/piwik/
+baseurl =
+
+; siteid (Integer)
+; Change the *sideid* parameter to whatever ID you want to use for tracking your Friendica installation.
+sideid =
+
+; optout (Boolean)
+; This defines whether or not a short notice about the utilization of Piwik will be displayed on every
+; page of your Friendica site (at the bottom of the page with some spacing to the other content).
+; Part of the note is a link that allows the visitor to set an opt-out cookie which will prevent visits
+; from that user be tracked by Piwik.
+optout = true
+
+; async (Boolean)
+; This defines whether or not to use asynchronous tracking so pages load (or appear to load) faster.
+async = false
+
+INI;
+//Keep this line

piwik/piwik.php

@@ -16,13 +16,14 @@
  *
  *   Configuration:
  *     Use the administration panel to configure the Piwik tracking addon, or
- *     in case you don't use this add the following lines to your .htconfig.php
+ *     in case you don't use this add the following lines to your config/local.ini.php
  *     file:
  *
- *     $a->config['piwik']['baseurl'] = 'www.example.com/piwik/';
- *     $a->config['piwik']['siteid'] = '1';
- *     $a->config['piwik']['optout'] = true;  // set to false to disable
- *     $a->config['piwik']['async'] = false;  // set to true to enable
+ *     [piwik]
+ *     baseurl = example.com/piwik/
+ *     sideid = 1
+ *     optout = true ;set to false to disable
+ *     async = false ;set to true to enable
  *
  *     Change the siteid to the ID that the Piwik tracker for your Friendica
  *     installation has. Alter the baseurl to fit your needs, don't care
@@ -34,17 +35,24 @@ use Friendica\Core\Config;
 use Friendica\Core\L10n;
 
 function piwik_install() {
+	Addon::registerHook('load_config', 'addon/piwik/piwik.php', 'piwik_load_config');
 	Addon::registerHook('page_end', 'addon/piwik/piwik.php', 'piwik_analytics');
 
 	logger("installed piwik addon");
 }
 
 function piwik_uninstall() {
+	Addon::unregisterHook('load_config', 'addon/piwik/piwik.php', 'piwik_load_config');
 	Addon::unregisterHook('page_end', 'addon/piwik/piwik.php', 'piwik_analytics');
 
 	logger("uninstalled piwik addon");
 }
 
+function piwik_load_config(\Friendica\App $a)
+{
+	$a->loadConfigFile(__DIR__. '/config/piwik.ini.php');
+}
+
 function piwik_analytics($a,&$b) {
 
 	/*
@@ -55,12 +63,12 @@ function piwik_analytics($a,&$b) {
 	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/piwik/piwik.css' . '" media="all" />';
 
 	/*
-	 *   Get the configuration variables from the .htconfig file.
+	 *   Get the configuration variables from the config/local.ini.php file.
 	 */
-	$baseurl = Config::get('piwik','baseurl');
-	$siteid  = Config::get('piwik','siteid');
-	$optout  = Config::get('piwik','optout');
-	$async   = Config::get('piwik','async');
+	$baseurl = Config::get('piwik', 'baseurl');
+	$siteid  = Config::get('piwik', 'siteid');
+	$optout  = Config::get('piwik', 'optout');
+	$async   = Config::get('piwik', 'async');
 
 	/*
 	 *   Add the Piwik tracking code for the site.