Effect Config

config.ts

import { resolve } from 'path'

import { NodeContext, NodeRuntime } from '@effect/platform-node'
import dotenv from 'dotenv'
import { Config, Effect, identity, Logger, LogLevel } from 'effect'
import { argv } from 'process'

const ENV_FILE = resolve(
  process.cwd(),
  `${argv[2]?.includes('.env') ? argv[2] : `${argv[2]}/.env`}`
)

dotenv.config({ path: ENV_FILE })

function orange(str: string): string {
  return `\x1b[1;33m${str}\x1b[0m`
}

function warn(e: unknown): void {
  console.error(orange('\nWARNING:'), e)
}

const program = Effect.gen(function* () {
  yield* Effect.log('Config')

  if (argv.length < 3) {
    yield* Effect.logWarning(
      'Path to the .env file was not provided. Running with defaults. Usage: `tsx src/utils/cli.ts <path-to-env>`.'
    )
  } else {
    yield* Effect.log(`.env: \x1b[0m${ENV_FILE}`).pipe(
      Effect.annotateLogs({ ['.env']: ENV_FILE })
    )
  }

  const config = {
    author: yield* Config.nonEmptyString('NEXT_PUBLIC_AUTHOR_NAME').pipe(
      Config.withDefault('John Doe')
    ),
    baseUrl: yield* Config.nonEmptyString('NEXT_PUBLIC_BASE_URL').pipe(
      Config.withDefault('http://localhost:3000')
    ),
    contentDirectory: yield* Config.string('APP_CONTENT_DIRECTORY').pipe(
      Config.withDefault('src/content')
    ),
    contentRoute: yield* Config.string('APP_CONTENT_ROUTE').pipe(
      Config.withDefault('blog')
    ),
    description: yield* Config.string('APP_DESCRIPTION').pipe(
      Config.withDefault("John Doe's Personal Blog")
    ),
    discordUrl: yield* Config.string('NEXT_PUBLIC_DISCORD_URL').pipe(
      Config.withDefault('https://discord.com/')
    ),
    facebookUrl: yield* Config.string('NEXT_PUBLIC_FACEBOOK_URL').pipe(
      Config.withDefault('https://facebook.com/')
    ),
    githubUrl: yield* Config.string('NEXT_PUBLIC_GITHUB_URL').pipe(
      Config.withDefault('https://github.com/')
    ),
    instagramUrl: yield* Config.string('NEXT_PUBLIC_INSTAGRAM_URL').pipe(
      Config.withDefault('https://instagram.com/')
    ),
    linkedinUrl: yield* Config.string('NEXT_PUBLIC_LINKEDIN_URL').pipe(
      Config.withDefault('https://linkedin.com/in/')
    ),
    metadataDirectory: yield* Config.string('APP_METADATA_DIRECTORY').pipe(
      Config.withDefault('src/data')
    ),
    orcidUrl: yield* Config.string('NEXT_PUBLIC_ORCID_URL').pipe(
      Config.withDefault('https://orcid.org/')
    ),
    sections: yield* Config.string('APP_SECTIONS').pipe(
      Config.withDefault('blog'),
      Config.map((s) => {
        const sections = s.split(',').map((section) => ({
          name: section.trim(),
        }))
        return sections
      })
    ),
    title: yield* Config.nonEmptyString('APP_TITLE').pipe(
      Config.withDefault('John Doe')
    ),
    twitterUrl: yield* Config.string('NEXT_PUBLIC_TWITTER_URL').pipe(
      Config.withDefault('https://twitter.com/')
    ),
  }

  yield* Effect.logDebug(config)

  yield* Effect.log(orange(`Author: ${config.author}`))
  yield* Effect.log(orange(`Title: ${config.title}`))
  yield* Effect.log(orange(`Description: ${config.description}`))
  yield* Effect.log(orange(`Base URL: ${config.baseUrl}`))
  yield* Effect.log(orange(`Content Directory: ${config.contentDirectory}`))
  yield* Effect.log(orange(`Content Route: ${config.contentRoute}`))
  yield* Effect.log(orange(`Metadata Directory: ${config.metadataDirectory}`))

  yield* Effect.log('Done')

  return config
}).pipe(
  Effect.match({
    onFailure: (error) => 'message' in error && warn(error.message),
    onSuccess: identity,
  })
)

export const config = NodeRuntime.runMain(
  program.pipe(
    Effect.provide(NodeContext.layer),
    Logger.withMinimumLogLevel(LogLevel.Info),
    Effect.catchAllCause(Effect.logError)
  )
)