// Functions to add and remove AO features
import { execSync, exec } from 'child_process'
import { AO_MANUAL_PATH } from './manual.js'
import { loadJsonFile } from './files.js'
import path from 'path'
import { fileURLToPath } from 'url'

const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)

// It is possible to run ao-cli with npx @autonomousorganization/ao-cli. In this case, it can help you install it permanently.
export function installAoCli() {
  try {
    execSync('npm i -g @autonomousorganization/ao-cli 2>&1')
    console.log('Installed ao-cli.')
  } catch(err) {
    console.log('Error installing ao-cli:', err)
  }
}

// Adds a line to .bashrc to make 'ao' an alias for 'ao-cli', to simplify using the AO from the command line
export function installAoAlias() {
  try {
    execSync('grep "ao=\'ao-cli\'" ~/.bashrc')
    console.log('You can already type \'ao\' to launch ao-cli; the alias line already exists in ~/.bashrc.')
  } catch(err) {
    execSync('echo alias ao=\'ao-cli\' >> .bashrc')
    console.log('Added alias line to ~/.bashrc. You can now type \'ao\' to launch ao-cli.')
  }
}

export async function getAoCliVersion() {
  const packageJson = await loadJsonFile(path.join(__dirname, '../package.json'))
  return packageJson.version
}

// Updates the globally-installed version of this package, ao-cli, using npm
export async function selfUpdate() {
  try {
    const beforeVersionNumber = await getAoCliVersion()
    const result = execSync('npm update -g @autonomousorganization/ao-cli 2>&1')
    const afterVersionNumber = await getAoCliVersion()
    if(beforeVersionNumber === afterVersionNumber) {
      console.log("ao-cli version is already current.")
    } else {
      console.log('\nao-cli self-updated automatically from version', beforeVersionNumber, 'to version', afterVersionNumber, 'from the official npm repository.')
    }
  } catch (err) {
    console.log('Failed to update ao-cli: ', err)
  }
}

export async function updateManual() {
  exec('cd ' + process.env.HOME + '/.ao/manual && git pull origin main 2>&1', (error, stdout, stderr) => {
    //console.log('error:', error, 'stdout:', stdout, 'stderr:', stderr)
    if(error) {
      console.log('git pull failed with error:', error)
    }
    if(stdout.includes('Already up to date.')) {
      return
    }
    console.log('/nAO User Manual was updated.')
  })
}

// Downloads the ao-manual repo to ~/.ao/manual/
export function downloadManual() {
  try {
    execSync('git clone http://git.coalitionofinvisiblecolleges.org:3009/autonomousorganization/ao-manual.git ' + AO_MANUAL_PATH + ' 2>&1')
  } catch(err) {
    switch(err.code) {
      case 128:
        return false
    }
  }
  return true
}