Kostenberechnung gefixt

backend/public/index.html

@@ -184,10 +184,10 @@ Domains jährlich: <span id="costDomain">0</span> €<br>
 <input id="os">
 
 <label>Kosten Monat</label>
-<input id="kosten_monat">
+<input id="kosten_monat" type="number" step="0.01">
 
 <label>Kosten Jahr</label>
-<input id="kosten_jahr">
+<input id="kosten_jahr" type="number" step="0.01">
 
 <label>Providername</label>
 <input id="providername">

backend/public/js/resources.js

@@ -1,5 +1,42 @@
 window.resources = []
 
+function normalizeCostValue(value){
+    if(!value) return ""
+
+    return String(value).replace(",", ".")
+}
+
+function formatCostValue(value){
+    if(!Number.isFinite(value)) return ""
+
+    return value.toFixed(2)
+}
+
+function setupResourceCostSync(){
+    const monthInput = document.getElementById("kosten_monat")
+    const yearInput = document.getElementById("kosten_jahr")
+
+    if(!monthInput || !yearInput) return
+
+    monthInput.addEventListener("input", () => {
+        const month = parseFloat(normalizeCostValue(monthInput.value))
+
+        if(Number.isFinite(month)){
+            yearInput.value = formatCostValue(month * 12)
+        }
+    })
+
+    yearInput.addEventListener("input", () => {
+        const year = parseFloat(normalizeCostValue(yearInput.value))
+
+        if(Number.isFinite(year)){
+            monthInput.value = formatCostValue(year / 12)
+        }
+    })
+}
+
+document.addEventListener("DOMContentLoaded", setupResourceCostSync)
+
 window.loadResources = async function(){
 
     window.resources = await api(API + "/resources/active")
@@ -86,11 +123,16 @@ window.saveResource = async function(){
     const id = document.getElementById("resource_id").value
     const field = id => document.getElementById(id).value
 
-    let kostenMonat=document.getElementById("kosten_monat").value
-    let kostenJahr=document.getElementById("kosten_jahr").value
+    let kostenMonat=normalizeCostValue(document.getElementById("kosten_monat").value)
+    let kostenJahr=normalizeCostValue(document.getElementById("kosten_jahr").value)
 
-    if(kostenMonat) kostenMonat=kostenMonat.replace(",",".")
-    if(kostenJahr) kostenJahr=kostenJahr.replace(",",".")
+    if(kostenMonat && !kostenJahr){
+        kostenJahr = formatCostValue(parseFloat(kostenMonat) * 12)
+    }
+
+    if(kostenJahr && !kostenMonat){
+        kostenMonat = formatCostValue(parseFloat(kostenJahr) / 12)
+    }
     
     const data={
         name: field("name"),