add randomInterval

dev/extras.ts

@@ -27,7 +27,7 @@ export default class ExtrasInDev {
       instances: [
         {
           message: 'dress',
-          interval: 5000,
+          randomInterval: { max: 10000, min: 5000 },
           immediate: true,
           targets: [
             {

src/config.ts

 // import 'source-map-support/register';
-import { Context } from 'koishi';
+import { Context, Random } from 'koishi';
 import { SendTarget } from 'koishi-target-def';
-import { SchemaProperty } from 'koishi-thirdeye';
+import { RegisterSchema, SchemaProperty } from 'koishi-thirdeye';
 import { scheduleJob } from 'node-schedule';
 
+@RegisterSchema()
+export class RandomInterval {
+  @SchemaProperty({ step: 1, default: 0 })
+  max: number;
+
+  @SchemaProperty({ step: 1, default: 0 })
+  min: number;
+
+  getInterval() {
+    return Random.int(this.min, this.max + 1);
+  }
+
+  isAvailable() {
+    return !!this.max && !!this.min;
+  }
+
+  processRandom(ctx: Context, callback: () => void) {
+    ctx.setTimeout(() => {
+      callback();
+      this.processRandom(ctx, callback);
+    }, this.getInterval());
+  }
+}
+
 export class SchedulePluginConfig {
-  @SchemaProperty({ description: 'cron 时间' })
+  @SchemaProperty({ description: 'cron 时间。' })
   cron: string;
 
-  @SchemaProperty({ description: '执行的间隔 ms', step: 1 })
+  @SchemaProperty({ description: '执行的间隔 ms。', step: 1 })
   interval: number;
 
+  @SchemaProperty({ description: '随机间隔。' })
+  randomInterval: RandomInterval;
+
   @SchemaProperty({
     default: false,
     description: '插件启动时是否立即运行一遍。',
@@ -30,11 +57,14 @@ export class SchedulePluginConfig {
     if (this.cron) {
       const job = scheduleJob(this.cron, callback);
       ctx.on('dispose', () => {
-        job.cancel()
+        job.cancel();
       });
     }
     if (this.interval) {
       ctx.setInterval(callback, this.interval);
     }
+    if (this.randomInterval?.isAvailable()) {
+      this.randomInterval.processRandom(ctx, callback);
+    }
   }
 }