From c8bd871ba780407ba54255fb8ce9f1831a1423db Mon Sep 17 00:00:00 2001
From: Stefan - Zipkid - Goethals <stefan@zipkid.eu>
Date: Mon, 9 Oct 2023 08:26:13 +0200
Subject: [PATCH] Use environment variables to configure the exporter.

---
 src/exporter.js       | 4 ++--
 src/lib/prometheus.js | 8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/exporter.js b/src/exporter.js
index 54f59f26..84eb8689 100644
--- a/src/exporter.js
+++ b/src/exporter.js
@@ -5,7 +5,7 @@ const path = require('path');
 const logger = require('./lib/logger');
 
 // Check if there is a `apps.json` in the config folder
-if (!fs.existsSync(path.resolve(__dirname, '../config/apps.json'))) {
+if (!process.env.APPS && !fs.existsSync(path.resolve(__dirname, '../config/apps.json'))) {
   logger.error(
     'Please copy the file "src/examples/apps.json" => "config/apps.json"',
   );
@@ -13,7 +13,7 @@ if (!fs.existsSync(path.resolve(__dirname, '../config/apps.json'))) {
 }
 
 // Check if there is a `config.json` in the config folder
-if (!fs.existsSync(path.resolve(__dirname, '../config/config.json'))) {
+if (!process.env.CONFIG && !fs.existsSync(path.resolve(__dirname, '../config/config.json'))) {
   logger.error(
     'Please copy the file "src/examples/config.json" => "config/config.json"',
   );
diff --git a/src/lib/prometheus.js b/src/lib/prometheus.js
index 165b8282..722f860e 100644
--- a/src/lib/prometheus.js
+++ b/src/lib/prometheus.js
@@ -4,10 +4,10 @@ const client = require('prom-client');
 const itunes = require('app-store-scraper');
 const gplay = require('google-play-scraper');
 
-// Config files
-const config = require('../../config/config.json');
-const apps = require('../../config/apps.json');
-const metrics = require('../config/metrics.json');
+// get config from docker environment variables or config files
+const config = process.env.CONFIG ? JSON.parse(process.env.CONFIG) : require('../../config/config.json');
+const apps = process.env.APPS ? JSON.parse(process.env.APPS) : require('../../config/apps.json');
+const metrics = process.env.METRICS ? JSON.parse(process.env.METRICS) : require('../config/metrics.json');
 
 const register = new client.Registry();