import { OTLPLogExporter } from '@opentelemetry/exporter-logs-otlp-http'
import { OTLPMetricExporter } from '@opentelemetry/exporter-metrics-otlp-http'
import { OTLPTraceExporter } from '@opentelemetry/exporter-trace-otlp-http'
import { resourceFromAttributes } from '@opentelemetry/resources'
import {
  additionalFiles,
  additionalPackages,
  syncEnvVars,
} from '@trigger.dev/build/extensions/core'
import { defineConfig } from '@trigger.dev/sdk'
import { env } from './lib/core/config/env'
import { parseOtlpHeaders } from './lib/monitoring/otlp'

const grafanaEndpoint = env.GRAFANA_OTLP_ENDPOINT
const grafanaHeaders = env.GRAFANA_OTLP_HEADERS
const grafanaDeploymentEnvironment = env.GRAFANA_DEPLOYMENT_ENVIRONMENT
const grafanaConfigured = Boolean(grafanaEndpoint || grafanaHeaders || grafanaDeploymentEnvironment)
const grafanaFullyConfigured = Boolean(
  grafanaEndpoint && grafanaHeaders && grafanaDeploymentEnvironment
)

if (grafanaConfigured && !grafanaFullyConfigured) {
  throw new Error(
    'Grafana OTLP telemetry is partially configured. Set GRAFANA_OTLP_ENDPOINT, GRAFANA_OTLP_HEADERS, and GRAFANA_DEPLOYMENT_ENVIRONMENT together, or leave all three unset.'
  )
}

const grafanaTelemetry = grafanaFullyConfigured
  ? (() => {
      const baseUrl = grafanaEndpoint!.replace(/\/+$/, '')
      const headers = parseOtlpHeaders(grafanaHeaders!)
      if (Object.keys(headers).length === 0) {
        throw new Error(
          'GRAFANA_OTLP_HEADERS is set but yielded no valid key=value pairs. Expected format: "key1=value1,key2=value2".'
        )
      }
      const resource = resourceFromAttributes({
        'deployment.environment.name': grafanaDeploymentEnvironment!,
      })
      return {
        exporters: [new OTLPTraceExporter({ url: `${baseUrl}/v1/traces`, headers })],
        logExporters: [new OTLPLogExporter({ url: `${baseUrl}/v1/logs`, headers })],
        metricExporters: [new OTLPMetricExporter({ url: `${baseUrl}/v1/metrics`, headers })],
        resource,
      }
    })()
  : undefined

export default defineConfig({
  project: env.TRIGGER_PROJECT_ID!,
  runtime: 'node-22',
  logLevel: 'log',
  maxDuration: 5400,
  retries: {
    enabledInDev: false,
    default: {
      maxAttempts: 1,
    },
  },
  dirs: ['./background'],
  ...(grafanaTelemetry ? { telemetry: grafanaTelemetry } : {}),
  build: {
    external: ['isolated-vm', '@earendil-works/pi-coding-agent', 'cpu-features'],
    extensions: [
      syncEnvVars(() => [{ name: 'DB_APP_NAME', value: 'sim-trigger' }]),
      additionalFiles({
        files: [
          './lib/execution/isolated-vm-worker.cjs',
          './lib/execution/sandbox/bundles/pptxgenjs.cjs',
          './lib/execution/sandbox/bundles/docx.cjs',
          './lib/execution/sandbox/bundles/pdf-lib.cjs',
        ],
      }),
      additionalPackages({
        packages: [
          'unpdf',
          'isolated-vm',
          'react-dom',
          '@react-email/render',
          '@earendil-works/pi-coding-agent',
        ],
      }),
    ],
  },
})