From ee5bda2fe3eacc2eb28d7e5f71246aea69befd49 Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@necronda.net>
Date: Wed, 26 Apr 2023 19:17:35 +0200
Subject: [PATCH] Add weight limit to scale

---
 Elwig/App.xaml.cs                     | 3 ++-
 Elwig/Helpers/Config.cs               | 4 +++-
 Elwig/Helpers/Weighing/IScale.cs      | 5 +++++
 Elwig/Helpers/Weighing/SystecScale.cs | 6 +++++-
 4 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/Elwig/App.xaml.cs b/Elwig/App.xaml.cs
index bb674d4..08d171b 100644
--- a/Elwig/App.xaml.cs
+++ b/Elwig/App.xaml.cs
@@ -47,8 +47,9 @@ namespace Elwig {
                     var cnx = s[3];
                     var empty = s[4];
                     var filling = s[5];
+                    int? limit = s[6] == null ? null : int.Parse(s[6]);
                     if (type == "systec") {
-                        list.AddLast(new SystecScale(scaleNr, model, cnx, empty, filling));
+                        list.AddLast(new SystecScale(scaleNr, model, cnx, empty, filling, limit));
                     }
                 } catch (Exception e) {
                     MessageBox.Show($"Unable to create scale {s[0]}:\n\n{e.Message}", "Scale Error", MessageBoxButton.OK, MessageBoxImage.Error);
diff --git a/Elwig/Helpers/Config.cs b/Elwig/Helpers/Config.cs
index 4d7e47a..a95ed67 100644
--- a/Elwig/Helpers/Config.cs
+++ b/Elwig/Helpers/Config.cs
@@ -48,7 +48,8 @@ namespace Elwig.Helpers {
             if (ini != null) {
                 foreach (var s in ini.Sections.Where(s => s.SectionName.StartsWith("scale."))) {
                     ScaleList.AddLast(new string[] {
-                        s.SectionName[6..], s.Keys["type"], s.Keys["model"], s.Keys["connection"], s.Keys["empty"], s.Keys["filling"]
+                        s.SectionName[6..], s.Keys["type"], s.Keys["model"], s.Keys["connection"],
+                        s.Keys["empty"], s.Keys["filling"], s.Keys["limit"]
                     });
                 }
             }
@@ -62,6 +63,7 @@ namespace Elwig.Helpers {
                 file.Write($"\r\n[scale.{s[0]}]\r\ntype = {s[1]}\r\nmodel = {s[2]}\r\nconnection = {s[3]}\r\n");
                 if (s[4] != null) file.Write($"empty = {s[4]}\r\n");
                 if (s[5] != null) file.Write($"filling = {s[5]}\r\n");
+                if (s[6] != null) file.Write($"limit = {s[6]}\r\n");
             }
         }
     }
diff --git a/Elwig/Helpers/Weighing/IScale.cs b/Elwig/Helpers/Weighing/IScale.cs
index 51b2e5d..b13baf5 100644
--- a/Elwig/Helpers/Weighing/IScale.cs
+++ b/Elwig/Helpers/Weighing/IScale.cs
@@ -36,6 +36,11 @@ namespace Elwig.Helpers.Weighing {
         /// </summary>
         bool HasFillingClearance { get; }
 
+        /// <summary>
+        /// The maximal configured weight limit of the scale in kg
+        /// </summary>
+        int? WeightLimit { get; }
+
         /// <summary>
         /// Get the current weight on the scale without performing a weighing process
         /// </summary>
diff --git a/Elwig/Helpers/Weighing/SystecScale.cs b/Elwig/Helpers/Weighing/SystecScale.cs
index 10bcf83..b4fcb84 100644
--- a/Elwig/Helpers/Weighing/SystecScale.cs
+++ b/Elwig/Helpers/Weighing/SystecScale.cs
@@ -29,8 +29,9 @@ namespace Elwig.Helpers.Weighing {
         public int ScaleNr { get; private set; }
         public bool IsReady { get; private set; }
         public bool HasFillingClearance { get; private set; }
+        public int? WeightLimit { get; private set; }
 
-        public SystecScale(int scaleNr, string model, string connection, string? empty = null, string? fill = null) {
+        public SystecScale(int scaleNr, string model, string connection, string? empty = null, string? fill = null, int? limit = null) {
             ScaleNr = scaleNr;
             Model = model;
             IsReady = true;
@@ -81,6 +82,9 @@ namespace Elwig.Helpers.Weighing {
                 EmptyDelay = int.Parse(parts[1]);
             }
             FillingClearanceMode = ConvertOutput(fill);
+            WeightLimit = limit;
+            if (FillingClearanceMode != null && WeightLimit == null)
+                throw new ArgumentException("Weight limit has to be set, if filling clearance supervision is enalbed");
 
             Writer = new(stream, Encoding.ASCII, -1, true);
             Reader = new(stream, Encoding.ASCII, false, -1, true);