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express-server/db-connect/db-connect.js

@@ -79,6 +79,20 @@ async function generateUser() {
         }
 }
 
+async function displayShoppinglist(sl_id) {
+    try {
+        let groups = await query('SELECT row_to_json("Group") AS obj FROM "Group" JOIN "Shoppinglist" USING (sl_id) WHERE sl_id = $1;', [sl_id]);
+        let items = await query('SELECT row_to_json("Item") AS obj FROM "Item" JOIN "Group" USING (group_id) WHERE "Group".sl_id = $1;', [sl_id]);
+        return items_in_groups(groups, items);
+        
+        
+    }
+
+    catch (error) {
+        console.error(error);
+    }
+}
+
 
 //sl_id generieren
 function generate_sl_id() {
@@ -92,6 +106,23 @@ function generate_sl_id() {
     return output;
 }
 
-module.exports = {
-    getShoppinglistsAdmin, getShoppinglistsShared, newShoppinglist
+function items_in_groups(groups, items) {
+
+    let result = [];
+
+    for(let item of groups) {
+
+        result.push({
+            group_id: item.group_id,
+            name: item.name,
+            color: item.color,
+            content: items.filter(function(obj) {return obj.group_id == item.group_id})
+        });
+    }
+
+    return result;
+}
+
+module.exports = {
+    getShoppinglistsAdmin, getShoppinglistsShared, newShoppinglist, displayShoppinglist
 }