pds-landing / vite.config.ts

import fs from 'node:fs'
import path from 'node:path'

import vue from '@vitejs/plugin-vue'
import { defineConfig, loadEnv } from 'vite'
import { ZodError } from 'zod'
import { type AppConfig, AppConfigSchema } from './src/config/schema'

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), '')
  const configFile =
    env.APP_CONFIG_PATH ?? path.resolve(process.cwd(), `config/${mode}.json`)

  let fileConfig: {
    [key: string]: unknown
  } = {}
  if (fs.existsSync(configFile)) {
    fileConfig = JSON.parse(fs.readFileSync(configFile, 'utf-8')) as {
      [key: string]: unknown
    }
  }

  const merged = {
    ...fileConfig,
    pdsService: env.VITE_PDS_SERVICE ?? fileConfig?.pdsService,
    bskyService: env.VITE_BSKY_SERVICE ?? fileConfig?.bskyService,
  }

  let config: AppConfig | undefined

  try {
    config = AppConfigSchema.parse(merged) as AppConfig
  } catch (e) {
    if (e instanceof ZodError) {
      console.error('invalid configuration.')
      for (const issue of e.issues)
        console.error(`  ${issue.path.join('.')}: ${issue.message}`)

      console.error(`\nconfig file: ${configFile}`)
      console.error(`  see schema in src/config/schema.ts\n`)
      process.exit(1)
    }
  }

  return {
    plugins: [vue()],
    define: {
      __APP_CONFIG__: JSON.stringify(config),
    },
    resolve: {
      alias: { '@': path.resolve(__dirname, 'src') },
    },
  }
})