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README.md

@@ -1,4 +1,104 @@
-# AdminForth Auto Remove Plugin
+# Auto Remove Plugin
 
-Allows to remove old records.
+This plugin removes records from resources based on **count-based** or **time-based** rules.
 
+It is designed for cleaning up:
+
+* old records
+* logs
+* demo/test data
+* temporary entities
+
+---
+
+## Installation
+
+To install the plugin:
+
+```ts
+npm install @adminforth/auto-remove
+```
+
+Import it into your resource:
+```ts
+import AutoRemovePlugin from '../../plugins/adminforth-auto-remove/index.js';
+```
+
+## Plugin Options
+
+```ts
+export interface PluginOptions {
+ createdAtField: string;
+
+  /**
+   * - count-based: Delete items > keepAtLeast
+   * - time-based: Delete age > deleteOlderThan
+   */
+  mode: AutoRemoveMode;
+
+  /**
+   * for count-based mode (100', '1k', '10k', '1m')
+   */
+  keepAtLeast?: HumanNumber;
+
+  /**
+   * Minimum number of items to always keep in count-based mode.
+   * This acts as a safety threshold together with `keepAtLeast`.
+   * Example formats: '100', '1k', '10k', '1m'.
+   * 
+   * Validation ensures that minItemsKeep <= keepAtLeast. 
+  */
+  minItemsKeep?: HumanNumber;
+
+  /**
+   * Max age of item for time-based mode ('1d', '7d', '1mon', '1y')
+   */
+  deleteOlderThan?: HumanDuration;
+
+  /**
+   * Interval for running cleanup (e.g. '1h', '1d')
+   * Default '1d'
+   */
+  interval?: HumanDuration;
+}
+```
+---
+
+## Usage
+To use the plugin, add it to your resource file. Here's an example:
+
+for count-based mode
+```ts
+new AutoRemovePlugin({
+        createdAtField: 'created_at',   
+        mode: 'count-based',            
+        keepAtLeast: '200',                  
+        interval: '1s',                  
+        minItemsKeep: '180',       
+      }),
+```
+
+for time-based mode
+```ts
+new AutoRemovePlugin({
+        createdAtField: 'created_at',
+        mode: 'time-based',
+        deleteOlderThan: '3min',
+        interval: '5s',  
+      }),
+```
+
+---
+
+## Result
+After running **AutoRemovePlugin**, old or excess records are deleted automatically:
+
+- **Count-based mode:** keeps the newest `keepAtLeast` records, deletes older ones.  
+  Example: `keepAtLeast = 500` → table with 650 records deletes 150 oldest.
+
+- **Time-based mode:** deletes records older than `deleteOlderThan`.  
+  Example: `deleteOlderThan = '7d'` → removes records older than 7 days.
+
+- **Manual cleanup:** `POST /plugin/{pluginInstanceId}/cleanup`, returns `{ "ok": true }`.
+
+Logs show how many records were removed per run.

index.ts

@@ -3,16 +3,13 @@ import type { IAdminForth, IHttpServer, AdminForthResource } from "adminforth";
 import type { PluginOptions } from './types.js';
 import { parseHumanNumber } from './utils/parseNumber.js';
 import { parseDuration } from './utils/parseDuration.js';
-// Why do we need MAX_DELETE_PER_RUN?
-const MAX_DELETE_PER_RUN = 500;
+
+const ITEMS_PER_DELETE = 100;
 
 export default class AutoRemovePlugin extends AdminForthPlugin {
   options: PluginOptions;
-  // I don't understand why do you need this resource config if you alredy have it below 
-  // You can use create resource: AdminForthResourc and somewhere below just set it 
-  // Then you will remove [this._resourceConfig.columns.find(c => c.primaryKey)!.name] and will use just resource 
-  protected _resourceConfig!: AdminForthResource;
-  private timer?: NodeJS.Timeout;
+  resource?: AdminForthResource;
+  timer?: NodeJS.Timeout;
 
   constructor(options: PluginOptions) {
     super(options, import.meta.url);
@@ -26,30 +23,37 @@ export default class AutoRemovePlugin extends AdminForthPlugin {
 
   async modifyResourceConfig(adminforth: IAdminForth, resourceConfig: AdminForthResource) {
     super.modifyResourceConfig(adminforth, resourceConfig);
-    this._resourceConfig = resourceConfig;
 
-    // Start the cleanup timer
+    if (resourceConfig) {
+      this.resource = resourceConfig;
+    }
+
     const intervalMs = parseDuration(this.options.interval || '1d');
     this.timer = setInterval(() => {
       this.runCleanup(adminforth).catch(console.error);
     }, intervalMs);
   }
 
   validateConfigAfterDiscover(adminforth: IAdminForth, resourceConfig: AdminForthResource) {
-    // Check createdAtField exists and is date/datetim
     const col = resourceConfig.columns.find(c => c.name === this.options.createdAtField);
-    // I don't like error messages look at other plugins and change to something similar
-    if (!col) throw new Error(`createdAtField "${this.options.createdAtField}" not found`);
+    if (!col) throw new Error(`Field "${this.options.createdAtField}" not found in resource "${resourceConfig.label}"`);
     if (![AdminForthDataTypes.DATE, AdminForthDataTypes.DATETIME].includes(col.type!)) {
-      throw new Error(`createdAtField must be date/datetime/timestamp`);
+      throw new Error(`Field "${this.options.createdAtField}" in resource "${resourceConfig.label}" must be of type DATE or DATETIME`);
     }
 
     // Check mode-specific options
-    if (this.options.mode === 'count-based' && !this.options.maxItems) {
-      throw new Error('maxItems is required for count-based mode');
+    if (this.options.mode === 'count-based') {
+      if (!this.options.keepAtLeast) {
+        throw new Error('keepAtLeast is required for count-based mode');
+      }
+      if (this.options.minItemsKeep && parseHumanNumber(this.options.minItemsKeep) > parseHumanNumber(this.options.keepAtLeast)) {
+        throw new Error(
+          `Option "minItemsKeep" (${this.options.minItemsKeep}) cannot be greater than "keepAtLeast" (${this.options.keepAtLeast}). Please set "minItemsKeep" less than or equal to "keepAtLeast"`
+        );
+      }
     }
-    if (this.options.mode === 'time-based' && !this.options.maxAge) {
-      throw new Error('maxAge is required for time-based mode');
+    if (this.options.mode === 'time-based' && !this.options.deleteOlderThan) {
+      throw new Error('deleteOlderThan is required for time-based mode');
     }
   }
 
@@ -64,35 +68,44 @@ export default class AutoRemovePlugin extends AdminForthPlugin {
       console.error('AutoRemovePlugin runCleanup error:', err);
     }
   }
-
+  
   private async cleanupByCount(adminforth: IAdminForth) {
-    const limit = parseHumanNumber(this.options.maxItems!);
-    const resource = adminforth.resource(this._resourceConfig.resourceId);
+    const limit = parseHumanNumber(this.options.keepAtLeast!);
+    const resource = adminforth.resource(this.resource.resourceId);
 
     const allRecords = await resource.list([], null, null, [Sorts.ASC(this.options.createdAtField)]);
     if (allRecords.length <= limit) return;
 
-    const toDelete = allRecords.slice(0, allRecords.length - limit).slice(0, this.options.maxDeletePerRun || MAX_DELETE_PER_RUN);
-    for (const r of toDelete) {
-      await resource.delete(r[this._resourceConfig.columns.find(c => c.primaryKey)!.name]);
-      console.log(`AutoRemovePlugin: deleted record ${r[this._resourceConfig.columns.find(c => c.primaryKey)!.name]} due to count-based limit`);
+    const toDelete = allRecords.slice(0, allRecords.length - limit);
+
+    const pkColumn = this.resource.columns.find(c => c.primaryKey)!.name;
+
+    for (let i = 0; i < toDelete.length; i += ITEMS_PER_DELETE) {
+      const deletePackage = toDelete.slice(i, i + ITEMS_PER_DELETE);
+      await Promise.all(deletePackage.map(r => resource.delete(r[pkColumn])));
     }
+
+    console.log(`AutoRemovePlugin: deleted ${toDelete.length} records due to count-based limit`);
   }
 
   private async cleanupByTime(adminforth: IAdminForth) {
-    const maxAgeMs = parseDuration(this.options.maxAge!);
+    const maxAgeMs = parseDuration(this.options.deleteOlderThan!);
     const threshold = Date.now() - maxAgeMs;
-    const resource = adminforth.resource(this._resourceConfig.resourceId);
+    const resource = adminforth.resource(this.resource.resourceId);
+
+    const allRecords = await resource.list([], null, null, [Sorts.ASC(this.options.createdAtField)]);
+    const toDelete = allRecords.filter(r => new Date(r[this.options.createdAtField]).getTime() < threshold);
+
+    const pkColumn = this.resource.columns.find(c => c.primaryKey)!.name;
 
-    const allRecords = await resource.list([], null, null, Sorts.ASC(this.options.createdAtField));
-    const toDelete = allRecords
-      .filter(r => new Date(r[this.options.createdAtField]).getTime() < threshold)
-      .slice(0, this.options.maxDeletePerRun || MAX_DELETE_PER_RUN);
+    for (let i = 0; i < toDelete.length; i += ITEMS_PER_DELETE) {
+      const deletePackage = toDelete.slice(i, i + ITEMS_PER_DELETE);
 
-    for (const r of toDelete) {
-      await resource.delete(r[this._resourceConfig.columns.find(c => c.primaryKey)!.name]);
-      console.log(`AutoRemovePlugin: deleted record ${r[this._resourceConfig.columns.find(c => c.primaryKey)!.name]} due to time-based limit`);
+      await Promise.all(deletePackage.map(r => resource.delete(r[pkColumn])));
     }
+    console.log(
+      `AutoRemovePlugin: deleted ${toDelete.length} records due to time-based limit`
+    );
   }
 
   setupEndpoints(server: IHttpServer) {

types.ts

@@ -28,22 +28,25 @@ export interface PluginOptions {
   /**
    * for count-based mode (100', '1k', '10k', '1m')
    */
-  maxItems?: HumanNumber;
+  keepAtLeast?: HumanNumber;
 
   /**
-   * Max age of otem for time-based режиму ('1d', '7d', '1mon', '1y')
+   * Minimum number of items to always keep in count-based mode.
+   * This acts as a safety threshold together with `keepAtLeast`.
+   * Example formats: '100', '1k', '10k', '1m'.
+   * 
+   * Validation ensures that minItemsKeep <= keepAtLeast. 
+  */
+  minItemsKeep?: HumanNumber;
+
+  /**
+   * Max age of item for time-based mode ('1d', '7d', '1mon', '1y')
    */
-  maxAge?: HumanDuration;
+  deleteOlderThan?: HumanDuration;
 
   /**
    * Interval for running cleanup (e.g. '1h', '1d')
    * Default '1d'
    */
   interval?: HumanDuration;
-
-  /**
-   * Delete no more than X items per run
-   * Default 500
-   */
-  maxDeletePerRun?: number;
 }

utils/parseDuration.ts

@@ -1,19 +1,20 @@
 const UNITS: Record<string, number> = {
   s: 1000,
-  min: 60_000,
+  m: 60_000,
   h: 3_600_000,
   d: 86_400_000,
   w: 604_800_000,
-  mon: 2_592_000_000,
+  mo: 2_592_000_000,
   y: 31_536_000_000,
 };
 
 export function parseDuration(value: string): number {
-  const match = value.match(/^(\d+)\s*(s|min|h|d|w|mon|y)$/);
+  const match = value.match(/^(\d+)\s*(s|m|h|d|w|mo|y)$/);
   if (!match) {
     throw new Error(`Invalid duration format: ${value}`);
   }
 
   const [, amount, unit] = match;
   return Number(amount) * UNITS[unit];
 }
+