Added default categorical color to keys as a pair.

Author: natefrisch01

main.ts

@@ -3,6 +3,7 @@ import { getAPI } from 'obsidian-dataview';
 
 export default class UniqueMetadataKeysPlugin extends Plugin {
     api = getAPI();
+    keyColorMap = new Map<string, number>();
 
     onload() {
         this.addCommand({
@@ -25,13 +26,44 @@ export default class UniqueMetadataKeysPlugin extends Plugin {
         }
         uniqueKeys.delete("file");
 
+        // Define a list of categorical colors as single integers
+        const colors = [
+            9991159, 13948116, 16772608, 4280421, 16113345, 
+            9474192, 4617584, 15790320, 12320668, 16185078, 
+            32896, 15132410, 10040346, 16777128, 8388608, 
+            11184895, 8421376, 16761035, 255, 8421504
+        ];
+
+        // Map each unique key to a color
+        Array.from(uniqueKeys).forEach((key, index) => {
+            const color = colors[index % colors.length]; // Cycle through colors
+            this.keyColorMap.set(key, color);
+        });
+
         console.log('Unique Metadata Keys with Link Values:');
-        uniqueKeys.forEach(key => console.log(key));
+        this.keyColorMap.forEach((color, key) => console.log(`${key}: ${color}`));
+    }
+
+    getColorForKey(key: string): number | undefined {
+        return this.keyColorMap.get(key);
+    }
+
+    getMetadataKeyForLink(sourceId: string, targetId: string): string | null {
+        const sourcePage = this.api.page(sourceId);
+        if (!sourcePage) {
+            return null;
+        }
+
+        for (const [key, value] of Object.entries(sourcePage)) {
+            if (this.isLink(value) && value.path === targetId) {
+                return key;
+            }
+        }
+
+        return null;
     }
 
     isLink(value: any): boolean {
-        // Check if the value is a link object
         return typeof value === 'object' && value.hasOwnProperty('path');
     }
 }
-

package-lock.json

@@ -21,5 +21,8 @@
 		"obsidian-dataview": "^0.5.64",
 		"tslib": "2.4.0",
 		"typescript": "4.7.4"
+	},
+	"dependencies": {
+		"chroma-js": "^2.4.2"
 	}
 }