add barcode quick add

lib/api.dart

@@ -286,8 +286,6 @@ class API {
     var resp = jsonDecode(await postRequest("$instance/flow/$id/end",
         {"produced": produced?.map((x) => x.json()).toList()}));
 
-    print(resp);
-
     if (produced != null) {
       var produced = resp["produced"] as Map<String, dynamic>;
       return produced.map(
@@ -385,6 +383,7 @@ class ItemVariant {
   late String name;
   int? min;
   int? expiry;
+  List<int>? barcodes;
 
   ItemVariant(Map<String, dynamic> json) {
     item = json["item"];
@@ -392,6 +391,9 @@ class ItemVariant {
     name = json["name"];
     min = json["min"];
     expiry = json["expiry"];
+    barcodes = json["barcodes"] != null
+        ? (json["barcodes"] as List<dynamic>).cast<int>()
+        : null;
   }
 }
 
@@ -549,14 +551,14 @@ class FlowNote {
 }
 
 class GlobalItemStat {
-  late int item_count;
+  late int itemCount;
-  late int total_transactions;
+  late int totalTransactions;
-  late double total_price;
+  late double totalPrice;
 
   GlobalItemStat(Map<String, dynamic> json) {
-    item_count = json["item_count"];
+    itemCount = json["item_count"];
-    total_transactions = json["total_transactions"];
+    totalTransactions = json["total_transactions"];
-    total_price = json["total_price"];
+    totalPrice = json["total_price"];
   }
 }
 
@@ -581,11 +583,11 @@ class FullItemVariantStat {
 }
 
 class OriginStat {
-  late double average_price;
+  late double averagePrice;
   late int inventory;
 
   OriginStat(Map<String, dynamic> json) {
-    average_price = json["average_price"];
+    averagePrice = json["average_price"];
     inventory = json["inventory"];
   }
 }

lib/pages/flow/active_flow_page.dart

@@ -82,7 +82,7 @@ class _ActiveFlowPageState extends State<ActiveFlowPage> {
         ],
       ),
       body: Padding(
-        padding: EdgeInsets.symmetric(horizontal: 18.0),
+        padding: const EdgeInsets.symmetric(horizontal: 18.0),
         child: Column(
           children: [
             Row(

lib/pages/flow/create_flow_page.dart

@@ -94,7 +94,7 @@ class _CreateFlowPageState extends State<CreateFlowPage> {
             child: Text(API.API().getFlowInfo(widget.previousFlow!.kind).name),
           ),
         ),
-        Card(child: Icon(Icons.arrow_right)),
+        const Card(child: Icon(Icons.arrow_right)),
         Card(
           child: Padding(
             padding: const EdgeInsets.all(8.0),

lib/pages/items.dart

@@ -7,11 +7,40 @@ import 'package:flutter/material.dart';
 class ItemsPage extends StatelessWidget {
   const ItemsPage({super.key});
 
+  _scanBarcodeSupply(BuildContext context) async {
+    var code =
+        int.parse(await scanQRCode(context, title: "Scan Barcode") ?? "0");
+
+    var items = API().getItems();
+    for (var item in items) {
+      for (var variant in item.variants.keys) {
+        for (var barcode in item.variants[variant]!.barcodes ?? []) {
+          if (code == barcode) {
+            Navigator.of(context).push(MaterialPageRoute(
+                builder: (context) => SupplyPage(
+                      item,
+                      () {},
+                      onlyVariants: [variant],
+                    )));
+          }
+        }
+      }
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
         title: const Text("Items"),
+        // todo : add barcode scan
+        actions: [
+          ElevatedButton(
+              onPressed: () {
+                _scanBarcodeSupply(context);
+              },
+              child: const Icon(Icons.add_box))
+        ],
       ),
       body: ListView(
           children: API().getItems().map((x) {

lib/pages/itemview.dart

@@ -2,7 +2,6 @@ import 'package:cdb_ui/api.dart';
 import 'package:cdb_ui/pages/stats.dart';
 import 'package:cdb_ui/pages/transaction.dart';
 import 'package:flutter/material.dart';
-import 'package:intl/intl.dart';
 import 'supply.dart';
 
 // todo : show est. time remaining until inventory gets empty (based on demand)
@@ -33,7 +32,7 @@ class _ItemViewState extends State<ItemView> {
                   builder: (context) => ItemStatPage(widget.item),
                 ));
               },
-              icon: Icon(Icons.bar_chart))
+              icon: const Icon(Icons.bar_chart))
         ],
       ),
       body: Column(children: [

lib/pages/locations.dart

@@ -107,7 +107,7 @@ class _LocationViewState extends State<LocationView> {
         title: Text(widget.location.name),
       ),
       body: Padding(
-        padding: EdgeInsets.symmetric(horizontal: 10.0),
+        padding: const EdgeInsets.symmetric(horizontal: 10.0),
         child: Column(
           children: [
             Card(

lib/pages/stats.dart

@@ -24,7 +24,9 @@ class StatsPage extends StatelessWidget {
     // global origin / destinations
 
     return Scaffold(
-      appBar: AppBar(title: Text("Home"),),
+      appBar: AppBar(
+        title: const Text("Home"),
+      ),
       body: FutureBuilder(
         future: _fetchData(),
         builder: (context, snapshot) {
@@ -47,11 +49,11 @@ class StatsPage extends StatelessWidget {
                       mainAxisAlignment: MainAxisAlignment.spaceBetween,
                       children: [
                         IconText(Icons.data_object,
-                            "Items: ${globalStat.item_count}"),
+                            "Items: ${globalStat.itemCount}"),
                         IconText(Icons.list_alt,
-                            "Inventory: ${globalStat.total_transactions}"),
+                            "Inventory: ${globalStat.totalTransactions}"),
                         IconText(Icons.money,
-                            "Price: ${globalStat.total_price.toStringAsFixed(2)} €")
+                            "Price: ${globalStat.totalPrice.toStringAsFixed(2)} €")
                       ],
                     ),
                   )),
@@ -110,7 +112,7 @@ class ItemStatPage extends StatelessWidget {
                   return Column(children: [
                     Text("Inventory: ${originStat.inventory}"),
                     Text(
-                        "Average Price: ${originStat.average_price.toStringAsFixed(2)} €"),
+                        "Average Price: ${originStat.averagePrice.toStringAsFixed(2)} €"),
                   ]);
                 }).toList()
               ],

lib/pages/transaction.dart

@@ -132,12 +132,15 @@ class _TransactionPageState extends State<TransactionPage> {
                   children: [
                     // todo : human names
                     Text(
-                      "${API().getItem(transaction.item).name}",
+                      API().getItem(transaction.item).name,
                       style: const TextStyle(
                           fontWeight: FontWeight.bold, fontSize: 28),
                     ),
                     Text(
-                      "${API().getItem(transaction.item).variants[transaction.variant]!.name}",
+                      API()
+                          .getItem(transaction.item)
+                          .variants[transaction.variant]!
+                          .name,
                       style: const TextStyle(
                           fontWeight: FontWeight.bold,
                           fontSize: 20,
@@ -355,7 +358,7 @@ class TransactionSelectPage extends StatelessWidget {
       body: ListView(
           children: selectionList.isEmpty
               ? [
-                  ListTile(
+                  const ListTile(
                     title: Center(child: Text("No Transactions available")),
                   )
                 ]