import { createPagesRoute } from '@trigger.dev/nextjs';
import type { IO } from '@trigger.dev/sdk';
import { TriggerClient, eventTrigger } from '@trigger.dev/sdk';

import type { JobDefinition, JobRunIO, SimpleTriggerJobOptions } from './_internal/job';
import { BaseJobProvider } from './base';

export class TriggerJobProvider extends BaseJobProvider {
  private static _instance: TriggerJobProvider;

  private _client: TriggerClient;

  private constructor(options: { client: TriggerClient }) {
    super();

    this._client = options.client;
  }

  static getInstance() {
    if (!this._instance) {
      const client = new TriggerClient({
        id: 'documenso-app',
        apiKey: process.env.NEXT_PRIVATE_TRIGGER_API_KEY,
        apiUrl: process.env.NEXT_PRIVATE_TRIGGER_API_URL,
      });

      this._instance = new TriggerJobProvider({ client });
    }

    return this._instance;
  }

  public defineJob<N extends string, T>(job: JobDefinition<N, T>): void {
    this._client.defineJob({
      id: job.id,
      name: job.name,
      version: job.version,
      trigger: eventTrigger({
        name: job.trigger.name,
        schema: job.trigger.schema,
      }),
      run: async (payload, io) => job.handler({ payload, io: this.convertTriggerIoToJobRunIo(io) }),
    });
  }

  public async triggerJob(options: SimpleTriggerJobOptions): Promise<void> {
    await this._client.sendEvent({
      id: options.id,
      name: options.name,
      payload: options.payload,
      timestamp: options.timestamp ? new Date(options.timestamp) : undefined,
    });
  }

  public getApiHandler() {
    const { handler } = createPagesRoute(this._client);

    return handler;
  }

  private convertTriggerIoToJobRunIo(io: IO) {
    return {
      wait: io.wait,
      logger: io.logger,
      runTask: async (cacheKey, callback) => io.runTask(cacheKey, callback),
      triggerJob: async (cacheKey, payload) =>
        io.sendEvent(cacheKey, {
          ...payload,
          timestamp: payload.timestamp ? new Date(payload.timestamp) : undefined,
        }),
    } satisfies JobRunIO;
  }
}