import fs from 'fs'
import * as path from 'path'
import { ComponentConfig } from './compConfig'

export const defaultConfig: Config = {
  port: 1337,
  hostname: 'localhost',
  components: [],
  trackPath: '/webcm/track',
  cookiesKey: 'something-very-secret',
}

export type Config = {
  components: ComponentConfig[]
  target?: string
  hostname: string
  trackPath: string
  port: number
  cookiesKey: string
}

export function getConfig(configPath?: string) {
  let config: Config = defaultConfig
  if (!configPath) {
    console.log(
      'Config path not provided, checking if the config file exists...'
    )
    const tryPath = path.resolve('./webcm.config.ts')
    if (fs.existsSync(tryPath)) {
      console.log(`Found config file: ${tryPath}, using it...`)
      configPath = tryPath
    } else {
      console.log('Config file not found, using defaults')
    }
  }
  if (configPath) {
    const configFullPath = path.resolve(configPath)
    if (!fs.existsSync(configFullPath)) {
      throw new Error(
        `No config file found at provided path: ${configFullPath}`
      )
    } else {
      // eslint-disable-next-line @typescript-eslint/no-var-requires
      config = { ...config, ...require(configFullPath).default }
      for (const component of config.components) {
        if ('path' in component && !component.path.startsWith('/')) {
          component.path = path.resolve(configPath, '../', component.path)
        }
      }
    }
  }
  if (!config.components) {
    config.components = []
  }
  return config
}