import { i18n } from './i18n'
import { sdk } from './sdk'
import { uiPort, dataDir } from './utils'
import { storeJson } from './fileModels/store.json'

export const main = sdk.setupMain(async ({ effects }) => {
  console.info(i18n('Starting Station Master!'))

  // Reactive, field-scoped: rotating the join secret (getJoinSecret.ts) rewrites store.json,
  // which re-runs setupMain and restarts the daemon with the new value.
  const joinSecret = await storeJson.read((s) => s.joinSecret).const(effects)

  return sdk.Daemons.of(effects).addDaemon('server', {
    subcontainer: sdk.SubContainer.of(
      effects,
      { imageId: 'main' },
      sdk.Mounts.of().mountVolume({
        volumeId: 'data',
        subpath: null,
        mountpoint: dataDir,
        readonly: false,
      }),
      'station-master-sub',
    ),
    exec: {
      command: ['node', 'src/server/index.ts'],
      env: {
        // PORT/BIND_ADDRESS/DIST_DIR are left at src/server/index.ts's own defaults (8081,
        // 0.0.0.0, ./dist relative to the Dockerfile's WORKDIR) — nothing here needs to differ
        // from them, so only what actually must be supplied is set explicitly.
        DATA_DIR: dataDir,
        // generateJoinSecret.ts seeds this before main.ts ever runs, so it is never actually
        // empty — the fallback only avoids threading `string | undefined` through `env`, which
        // wants `Record<string, string>`.
        JOIN_SECRET: joinSecret ?? '',
      },
    },
    // Health check, run on each polling interval. `checkPortListening` reports ready once the
    // daemon binds `uiPort`; the 'ui' interface (interfaces.ts) exposes the same port.
    ready: {
      display: i18n('Multiplayer Server'),
      fn: () =>
        sdk.healthCheck.checkPortListening(effects, uiPort, {
          successMessage: i18n('The multiplayer server is ready'),
          errorMessage: i18n('The multiplayer server is not ready'),
        }),
    },
    requires: [],
  })
})