Facebook API access token generator

generate-facebook-token.sh

#!/bin/sh
heroku_app=my-app
client_id=XXXX
client_secret=XXXX
redirect_uri=https://example.com/

generateAccessToken() {
  http https://graph.facebook.com/v6.0/oauth/access_token \
    client_id=="${client_id}" \
    redirect_uri=="${redirect_uri}" \
    client_secret=="${client_secret}" \
    code=="$1" | \
  jq -r '.access_token'
}

generateLongLivedAccessToken() {
  http https://graph.facebook.com/v6.0/oauth/access_token? \
    grant_type==fb_exchange_token \
    client_id=="${client_id}" \
    client_secret=="${client_secret}" \
    fb_exchange_token==$1 | \
  jq -r '.access_token'
}

code=${1}
if [ -z $code ]; then
  echo "=> Obtain code"
  oauth_url="https://www.facebook.com/v6.0/dialog/oauth?client_id=${client_id}&redirect_uri=${redirect_uri}"
  echo "Going to ${oauth_url}"
  open $oauth_url
  read -p "Enter code: "  code
fi
access_token=$(generateAccessToken $code)
long_lived_token=$(generateLongLivedAccessToken $access_token)

echo $long_lived_token