All files / src/platform/integrations/services integration-registry.service.ts

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import { Injectable, Logger, NotFoundException } from '@nestjs/common';
import { InjectModel } from '@nestjs/mongoose';
import { Model } from 'mongoose';
import {
  IntegrationDefinition,
  TenantIntegration,
  IntegrationLog,
  IntegrationHealthCheck,
} from '../schemas/integration.schema';
 
type ProviderInstance = { testConnection(): Promise<boolean> };
 
@Injectable()
export class IntegrationRegistryService {
  private readonly logger = new Logger(IntegrationRegistryService.name);
  private readonly providers = new Map<string, ProviderInstance>();
  private readonly definitions = new Map<
    string,
    { category: string; name: string; description?: string }
  >();
 
  constructor(
    @InjectModel(IntegrationDefinition.name)
    private readonly definitionModel: Model<IntegrationDefinition>,
    @InjectModel(TenantIntegration.name)
    private readonly tenantIntegrationModel: Model<TenantIntegration>,
    @InjectModel(IntegrationLog.name)
    private readonly logModel: Model<IntegrationLog>,
    @InjectModel(IntegrationHealthCheck.name)
    private readonly healthCheckModel: Model<IntegrationHealthCheck>,
  ) {}
 
  /**
   * Register a system-level provider instance.
   */
  registerProvider(
    key: string,
    instance: ProviderInstance,
    meta?: { category?: string; name?: string },
  ): void {
    this.providers.set(key, instance);
    if (meta) {
      this.definitions.set(key, {
        category: meta.category ?? 'custom',
        name: meta.name ?? key,
      });
    }
    this.logger.log(`Integration provider registered: ${key}`);
  }
 
  getProvider<T extends ProviderInstance>(key: string): T {
    const provider = this.providers.get(key);
    if (!provider)
      throw new NotFoundException(
        `Integration provider '${key}' is not registered`,
      );
    return provider as T;
  }
 
  listProviders(): string[] {
    return Array.from(this.providers.keys());
  }
 
  async getActiveTenantIntegrations(
    tenantId: string,
  ): Promise<TenantIntegration[]> {
    return this.tenantIntegrationModel
      .find({ tenantId, status: 'connected' })
      .exec();
  }
 
  async getTenantIntegration(
    tenantId: string,
    key: string,
  ): Promise<TenantIntegration | null> {
    return this.tenantIntegrationModel
      .findOne({ tenantId, integrationKey: key })
      .exec();
  }
 
  async connect(
    tenantId: string,
    key: string,
    settings: any,
    connectedBy?: string,
  ): Promise<TenantIntegration> {
    const existing = await this.tenantIntegrationModel
      .findOne({ tenantId, integrationKey: key })
      .exec();
    const doc =
      existing ??
      new this.tenantIntegrationModel({ tenantId, integrationKey: key });
    doc.status = 'connected';
    doc.settings = settings;
    doc.connectedAt = new Date();
    doc.connectedBy = connectedBy as any;
    await doc.save();
 
    await this.writeLog(
      tenantId,
      key,
      'connect',
      'success',
      'Integration connected',
    );
    return doc;
  }
 
  async disconnect(tenantId: string, key: string): Promise<void> {
    await this.tenantIntegrationModel
      .findOneAndUpdate(
        { tenantId, integrationKey: key },
        { status: 'disconnected', disconnectedAt: new Date() },
      )
      .exec();
    await this.writeLog(
      tenantId,
      key,
      'disconnect',
      'success',
      'Integration disconnected',
    );
  }
 
  async testConnection(
    tenantId: string,
    key: string,
  ): Promise<{ ok: boolean; latencyMs: number }> {
    const start = Date.now();
    let ok = false;
 
    try {
      const provider = this.getProvider(key);
      ok = await provider.testConnection();
    } catch (err) {
      this.logger.warn(`Integration test failed for ${key}: ${err.message}`);
    }
 
    const latencyMs = Date.now() - start;
    await this.healthCheckModel.create({
      tenantId,
      integrationKey: key,
      status: ok ? 'ok' : 'failed',
      latencyMs,
      checkedAt: new Date(),
    });
 
    await this.tenantIntegrationModel
      .findOneAndUpdate(
        { tenantId, integrationKey: key },
        {
          lastHealthCheckAt: new Date(),
          lastHealthCheckResult: ok ? 'ok' : 'failed',
        },
      )
      .exec();
 
    return { ok, latencyMs };
  }
 
  async getHealthLogs(
    tenantId: string,
    key: string,
  ): Promise<IntegrationLog[]> {
    return this.logModel
      .find({ tenantId, integrationKey: key })
      .sort({ createdAt: -1 })
      .limit(50)
      .exec();
  }
 
  private async writeLog(
    tenantId: string,
    key: string,
    action: string,
    level: 'success' | 'failure' | 'warning',
    message: string,
  ): Promise<void> {
    await this.logModel.create({
      tenantId,
      integrationKey: key,
      action,
      level,
      message,
    });
  }
}