feat: add template field validation and typo suggestion for image generation prompts

Author: yaroslav8765

index.ts

@@ -1,5 +1,6 @@
 import { AdminForthPlugin, Filters } from "adminforth";
 import type { IAdminForth, IHttpServer, AdminForthComponentDeclaration, AdminForthResource } from "adminforth";
+import { suggestIfTypo } from "adminforth";
 import type { PluginOptions } from './types.js';
 import Handlebars from 'handlebars';
 import { RateLimiter } from "adminforth";
@@ -461,6 +462,53 @@ export default class  BulkAiFlowPlugin extends AdminForthPlugin {
           `);
         }
       }
+      if (this.options.fillFieldsFromImages || this.options.fillPlainFields || this.options.generateImages) {
+        let matches: string[] = [];
+        const regex = /{{(.*?)}}/g;
+
+        if (this.options.fillFieldsFromImages) {
+          for (const [key, value] of Object.entries((this.options.fillFieldsFromImages ))) {
+            const template = value;
+            const templateMatches = template.match(regex);
+            if (templateMatches) {
+              matches.push(...templateMatches);
+            }
+          }
+        }
+        if (this.options.fillPlainFields) {
+          for (const [key, value] of Object.entries((this.options.fillPlainFields))) {
+            const template = value;
+            const templateMatches = template.match(regex);
+            if (templateMatches) {
+              matches.push(...templateMatches);
+            }
+          }
+        }
+        if (this.options.generateImages) {
+          for (const [key, value] of Object.entries((this.options.generateImages ))) {
+            const template = value.prompt;
+            const templateMatches = template.match(regex);
+            if (templateMatches) {
+              matches.push(...templateMatches);
+            }
+          }
+        }
+
+        if (matches) {
+          matches.forEach((match) => {
+            const field = match.replace(/{{|}}/g, '').trim();
+            if (!resourceConfig.columns.find((column: any) => column.name === field)) {
+              const similar = suggestIfTypo(resourceConfig.columns.map((column: any) => column.name), field);
+              throw new Error(`Field "${field}" specified in generationPrompt not found in resource "${resourceConfig.label}". ${similar ? `Did you mean "${similar}"?` : ''}`);
+            } else {
+              let column = resourceConfig.columns.find((column: any) => column.name === field);
+              if (column.backendOnly === true) {
+                throw new Error(`Field "${field}" specified in generationPrompt is marked as backendOnly in resource "${resourceConfig.label}". Please remove backendOnly or choose another field.`);
+              }
+            }
+          });
+        }
+      }
     }
   }