Display history

lib/inventree/stock.dart

@@ -56,6 +56,67 @@ class InvenTreeStockItemTestResult extends InvenTreeModel {
 }
 
 
+class InvenTreeStockItemHistory extends InvenTreeModel {
+
+  InvenTreeStockItemHistory() : super();
+
+  InvenTreeStockItemHistory.fromJson(Map<String, dynamic> json) : super.fromJson(json);
+
+  @override
+  InvenTreeModel createFromJson(Map<String, dynamic> json) {
+    return InvenTreeStockItemHistory.fromJson(json);
+  }
+
+  @override
+  String get URL => "stock/track/";
+
+  @override
+  Map<String, String> defaultListFilters() {
+
+    // By default, order by decreasing date
+    return {
+      "ordering": "-date",
+    };
+  }
+
+  DateTime? get date {
+    if (jsondata.containsKey("date")) {
+      return DateTime.tryParse((jsondata["date"] ?? "") as String);
+    } else {
+      return null;
+    }
+  }
+
+  String get dateString {
+    var d = date;
+
+    if (d == null) {
+      return "";
+    }
+
+    return DateFormat("yyyy-MM-dd").format(d);
+  }
+
+  String get label => (jsondata["label"] ?? "") as String;
+
+  String get quantityString {
+    Map<String, dynamic> deltas = (jsondata["deltas"] ?? {}) as Map<String, dynamic>;
+
+    // Serial number takes priority here
+    if (deltas.containsKey("serial")) {
+      var serial = (deltas["serial"] ?? "").toString() as String;
+      return "# ${serial}";
+    } else if (deltas.containsKey("quantity")) {
+      double q = (deltas["quantity"] ?? 0);
+
+      return simpleNumberString(q);
+    } else {
+      return "";
+    }
+  }
+}
+
+
 class InvenTreeStockItem extends InvenTreeModel {
 
   InvenTreeStockItem() : super();

lib/widget/stock_item_history.dart

@@ -6,6 +6,8 @@ import 'package:flutter/material.dart';
 import 'package:inventree/widget/refreshable_state.dart';
 import 'package:inventree/l10.dart';
 import 'package:inventree/inventree/stock.dart';
+import 'package:inventree/inventree/model.dart';
+
 
 class StockItemHistoryWidget extends StatefulWidget {
 
@@ -27,9 +29,24 @@ class _StockItemHistoryDisplayState extends RefreshableState<StockItemHistoryWid
   @override
   String getAppBarTitle(BuildContext context) => L10().stockItemHistory;
 
+  List<InvenTreeStockItemHistory> history = [];
+
   @override
   Future<void> request(BuildContext refresh) async {
-    // TODO
+
+    history.clear();
+
+    InvenTreeStockItemHistory().list(filters: {"item": "${item.pk}"}).then((List<InvenTreeModel> results) {
+      for (var result in results) {
+        if (result is InvenTreeStockItemHistory) {
+          history.add(result);
+        }
+      }
+
+      // Refresh
+      setState(() {
+      });
+    });
   }
 
   @override
@@ -37,8 +54,25 @@ class _StockItemHistoryDisplayState extends RefreshableState<StockItemHistoryWid
     return ListView(
       children: ListTile.divideTiles(
         context: context,
-        tiles: [],
+        tiles: historyList(),
       ).toList()
     );
   }
+
+  List<Widget> historyList() {
+    List<Widget> tiles = [];
+
+    for (var entry in history) {
+      tiles.add(
+        ListTile(
+          leading: Text(entry.dateString),
+          trailing: entry.quantityString.isNotEmpty ? Text(entry.quantityString) : null,
+          title: Text(entry.label),
+          subtitle: entry.notes.isNotEmpty ? Text(entry.notes) : null,
+        )
+      );
+    }
+
+    return tiles;
+  }
 }