'use strict'

import { build } from './app.ts'
import 'dotenv/config'

import { makeWorkerUtils, type WorkerUtils, Runner, RunnerOptions, run as graphileRun } from 'graphile-worker'
import { join, dirname } from 'node:path';
import { fileURLToPath } from 'url';
import { getPackageVersion } from '@futureporn/utils';
import type { GraphileConfig } from "graphile-config";
import type {} from "graphile-worker";
import start_recording from './tasks/start_recording.ts';
import { stop_recording } from './tasks/stop_recording.ts';
import record from './tasks/record.ts'

const __dirname = dirname(fileURLToPath(import.meta.url));
const version = getPackageVersion(join(__dirname, '../package.json'))

if (!process.env.FUNCTION) throw new Error(`FUNCTION env var was missing. FUNCTION env var must be either 'api' or 'worker'.`);
if (!process.env.WORKER_CONNECTION_STRING) throw new Error(`WORKER_CONNECTION_STRING env var was missing`);
const connectionString = process.env.WORKER_CONNECTION_STRING!
const concurrency = (process.env?.WORKER_CONCURRENCY) ? parseInt(process.env.WORKER_CONCURRENCY) : 1
const preset: GraphileConfig.Preset = {
  worker: {
    connectionString: process.env.WORKER_CONNECTION_STRING,
    concurrentJobs: concurrency,
    fileExtensions: [".js", ".ts"],
  },
};


async function api() {
  if (!process.env.PORT) throw new Error('PORT is missing in env');
  console.log(`api FUNCTION listening on PORT ${process.env.PORT}`)
  const PORT = parseInt(process.env.PORT!)

  const fastifyOpts = {
    logger: {
      level: 'info',
      transport: {
        target: 'pino-pretty'
      }
    }
  }

  const server = build(fastifyOpts, connectionString)
  
  server.listen({ port: PORT }, (err) => {
    if (err) {
      server.log.error(err)
      process.exit(1)
    }
  })
}

async function worker(workerUtils: WorkerUtils) {
  const runnerOptions: RunnerOptions = {
    preset,
    concurrency,
    // taskDirectory: join(__dirname, 'tasks'),
    taskList: {
      'record': record,
      'start_recording': start_recording,
      'stop_recording': stop_recording
    }
  }
  
  const runner = await graphileRun(runnerOptions)
  if (!runner) throw new Error('failed to initialize graphile worker');
  await runner.promise
}


async function main() {

  const workerUtils = await makeWorkerUtils({ connectionString })
  await workerUtils.migrate()

  console.log(`@futureporn/capture version ${version} (FUNCTION=${process.env.FUNCTION})`)
  if (process.env.FUNCTION === 'api') {
    api()
  } else if (process.env.FUNCTION === 'worker') {
    worker(workerUtils)
  } else {
    throw new Error('process.env.FUNCTION must be either api or worker. got '+process.env.FUNCTION)
  }
}

main().catch((err) => {
  console.error('there was an error!')
  console.error(err);
  process.exit(1);
});