import { program } from 'commander'
import { join } from 'path'
import type { App } from '@types'
import { APPS_DIR } from '$apps'

const HOST = `http://localhost:${process.env.PORT ?? 3000}`

const STATE_ICONS: Record<string, string> = {
  running: '●',
  starting: '◎',
  stopped: '◯',
  invalid: '◌',
}

async function get<T>(url: string): Promise<T | undefined> {
  try {
    const res = await fetch(join(HOST, url))
    if (!res.ok) throw new Error(`${res.status} ${res.statusText}`)
    return await res.json()
  } catch (error) {
    console.error(error)
  }
}

async function post<T, B = unknown>(url: string, body?: B): Promise<T | undefined> {
  try {
    const res = await fetch(join(HOST, url), {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(body),
    })
    if (!res.ok) throw new Error(`${res.status} ${res.statusText}`)
    return await res.json()
  } catch (error) {
    console.error(error)
  }
}

async function listApps() {
  const apps: App[] | undefined = await get('/api/apps')
  if (!apps) return

  for (const app of apps) {
    console.log(`${STATE_ICONS[app.state] ?? '◯'} ${app.name}`)
  }
}

const startApp = async (app: string) => {
  await post(`/api/apps/${app}/start`)
}

const stopApp = async (app: string) => {
  await post(`/api/apps/${app}/stop`)
}

const restartApp = async (app: string) => {
  await post(`/api/apps/${app}/restart`)
}


program
  .name('toes')
  .version('0.0.1', '-v, --version')

program
  .command('list')
  .description('List all apps')
  .action(listApps)

program
  .command('start')
  .description('Start an app')
  .argument('<name>', 'app name')
  .action(startApp)

program
  .command('stop')
  .description('Stop an app')
  .argument('<name>', 'app name')
  .action(stopApp)


program
  .command('restart')
  .description('Restart an app')
  .argument('<name>', 'app name')
  .action(restartApp)

program
  .command('new')
  .description('Create a new app')
  .argument('<name>', 'app name')
  .action(name => {
    // ...
  })

program
  .command('push')
  .description('Push app to server')
  .option('-f, --force', 'force overwrite')
  .action(options => {
    // ...
  })

program.parse()