Now loading sponsor logos from env

ref #14

src/config.ts

@@ -8,7 +8,8 @@ export const config = {
     eventname: process.env.EVENT_NAME || "Please set the event name",
     currency_symbol: process.env.CURRENCY_SYMBOL || "€",
     sponsoring_receipt_minimum_amount: process.env.SPONSORING_RECEIPT_MINIMUM_AMOUNT || "10",
-    codeformat: process.env.CODEFORMAT || "qrcode"
+    codeformat: process.env.CODEFORMAT || "qrcode",
+    sponor_logos: getSponsorLogos()
 }
 let errors = 0
 if (typeof config.internal_port !== "number") {
@@ -17,4 +18,13 @@ if (typeof config.internal_port !== "number") {
 if (typeof config.development !== "boolean") {
     errors++
 }
+function getSponsorLogos(): string[] {
+    try {
+        const logos = JSON.parse(process.env.SPONOR_LOGOS);
+        if (!Array.isArray(logos)) { throw new Error("Not an array.") }
+        return logos;
+    } catch (error) {
+        return ["data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg=="];
+    }
+}
 export let e = errors