feat: añadir health check para reiniciar instancia de Evolution API

Co-authored-by: aider (openrouter/z-ai/glm-4.6) <aider@aider.chat>

src/services/maintenance.ts

@@ -4,6 +4,8 @@ import { toIsoSqlUTC } from '../utils/datetime';
 
 export class MaintenanceService {
   private static _timer: any = null;
+  private static _healthCheckTimer: any = null;
+  private static _lastRestartAttempt: number = 0;
 
   private static get retentionDays(): number {
     const v = Number(process.env.GROUP_MEMBERS_INACTIVE_RETENTION_DAYS);
@@ -11,10 +13,21 @@ export class MaintenanceService {
     return 180; // por defecto 180 días
   }
 
+  private static get evolutionApiConfig() {
+    return {
+      url: process.env.EVOLUTION_API_URL,
+      instance: process.env.EVOLUTION_API_INSTANCE,
+      apiKey: process.env.EVOLUTION_API_KEY,
+      intervalMs: Number(process.env.HEALTH_CHECK_INTERVAL_MS || '120000'), // 2 min por defecto
+      restartCooldownMs: Number(process.env.HEALTH_CHECK_RESTART_COOLDOWN_MS || '900000'), // 15 min por defecto
+    };
+  }
+
   static start(): void {
     if (process.env.NODE_ENV === 'test' && process.env.FORCE_SCHEDULERS !== 'true') return;
-    if (this.retentionDays <= 0) return;
 
+    // --- Tareas diarias existentes ---
+    if (this.retentionDays > 0) {
       const intervalMs = 24 * 60 * 60 * 1000; // diario
       this._timer = setInterval(() => {
         this.cleanupInactiveMembersOnce().catch(err => {
@@ -26,11 +39,29 @@ export class MaintenanceService {
       }, intervalMs);
     }
 
+    // --- Nuevo Health Check de Evolution API ---
+    const { url, instance, apiKey, intervalMs } = this.evolutionApiConfig;
+    if (url && instance && apiKey) {
+      console.log('[MaintenanceService] Iniciando health check de Evolution API...');
+      this._healthCheckTimer = setInterval(() => {
+        this.performEvolutionHealthCheck().catch(err => {
+          console.error('❌ Error en el health check de Evolution API:', err);
+        });
+      }, intervalMs);
+    } else {
+      console.warn('[MaintenanceService] Variables de entorno para el health check de Evolution API (URL, INSTANCE, API_KEY) no encontradas. Health check desactivado.');
+    }
+  }
+
   static stop(): void {
     if (this._timer) {
       clearInterval(this._timer);
       this._timer = null;
     }
+    if (this._healthCheckTimer) {
+      clearInterval(this._healthCheckTimer);
+      this._healthCheckTimer = null;
+    }
   }
 
   static async cleanupInactiveMembersOnce(instance: Database = db, retentionDays: number = this.retentionDays): Promise<number> {
@@ -98,4 +129,51 @@ export class MaintenanceService {
       return 0;
     }
   }
+
+  /**
+   * Verifica el estado de la instancia de Evolution API y la reinicia si es necesario.
+   */
+  private static async performEvolutionHealthCheck(): Promise<void> {
+    const { url, instance, apiKey, restartCooldownMs } = this.evolutionApiConfig;
+
+    const stateUrl = `${url}/instance/connectionState/${instance}`;
+    const restartUrl = `${url}/instance/restart/${instance}`;
+    const headers = { apikey: apiKey };
+
+    try {
+      const response = await fetch(stateUrl, { method: 'GET', headers });
+
+      if (!response.ok) {
+        console.error(`[HealthCheck] Error al consultar estado de Evolution API: ${response.status} ${response.statusText}`);
+        return;
+      }
+
+      const data = await response.json();
+      const currentState = data?.instance?.state;
+
+      console.log(`[HealthCheck] Estado de la instancia '${instance}': ${currentState}`);
+
+      if (currentState !== 'open') {
+        const now = Date.now();
+        if (now - this._lastRestartAttempt > restartCooldownMs) {
+          console.warn(`[HealthCheck] La instancia no está 'open'. Estado actual: ${currentState}. Intentando reiniciar...`);
+          try {
+            const restartResponse = await fetch(restartUrl, { method: 'PUT', headers });
+            if (restartResponse.ok) {
+              console.log(`[HealthCheck] Petición de reinicio para '${instance}' enviada exitosamente.`);
+              this._lastRestartAttempt = now;
+            } else {
+              console.error(`[HealthCheck] Fallo al reiniciar la instancia. Status: ${restartResponse.status} ${restartResponse.statusText}`);
+            }
+          } catch (restartError) {
+            console.error('[HealthCheck] Error de red al intentar reiniciar la instancia:', restartError);
+          }
+        } else {
+          console.log(`[HealthCheck] La instancia no está 'open', pero esperando cooldown de ${Math.round(restartCooldownMs / 60000)} minutos para no sobrecargar la API.`);
+        }
+      }
+    } catch (error) {
+      console.error('[HealthCheck] Error de red o inesperado al verificar el estado de la Evolution API:', error);
+    }
+  }
 }