Refactor labels (#4179)

* Create new tables * wip * wip * Refactor LegacyLabel * Remove LabelFactory * Add migration * wip * wip * Add pull-payment attachment to tx * Address kukks points
2025-12-19 06:54:19 +01:00 · 2022-10-11 17:34:29 +09:00
parent 895462ac7f
commit a2fa688cde
38 changed files with 1303 additions and 729 deletions
--- a/BTCPayServer/ColorPalette.cs
+++ b/BTCPayServer/ColorPalette.cs
@@ -0,0 +1,57 @@
+using System;
+using System.Drawing;
+using System.Text;
+using NBitcoin.Crypto;
+
+namespace BTCPayServer
+{
+    public class ColorPalette
+    {
+        public string TextColor(string bgColor)
+        {
+            int nThreshold = 105;
+            var bg = ColorTranslator.FromHtml(bgColor);
+            int bgDelta = Convert.ToInt32((bg.R * 0.299) + (bg.G * 0.587) + (bg.B * 0.114));
+            Color color = (255 - bgDelta < nThreshold) ? Color.Black : Color.White;
+            return ColorTranslator.ToHtml(color);
+        }
+        // Borrowed from https://github.com/ManageIQ/guides/blob/master/labels.md
+        public static readonly ColorPalette Default = new ColorPalette(new string[] {
+            "#fbca04",
+            "#0e8a16",
+            "#ff7619",
+            "#84b6eb",
+            "#5319e7",
+            "#cdcdcd",
+            "#cc317c",
+        });
+        private ColorPalette(string[] labels)
+        {
+            Labels = labels;
+        }
+
+        public readonly string[] Labels;
+
+        public string DeterministicColor(string label)
+        {
+            switch (label)
+            {
+                case "payjoin":
+                    return "#51b13e";
+                case "invoice":
+                    return "#cedc21";
+                case "payment-request":
+                    return "#489D77";
+                case "app":
+                    return "#5093B6";
+                case "pj-exposed":
+                    return "#51b13e";
+                case "payout":
+                    return "#3F88AF";
+                default:
+                    var num = NBitcoin.Utils.ToUInt32(Hashes.SHA256(Encoding.UTF8.GetBytes(label)), 0, true);
+                    return Labels[num % Labels.Length];
+            }
+        }
+    }
+}