WordPress Endpoint - Insert Post, push notification, send email

The code in this repository is responsible for inserting a WordPress post, sending a BlueShift email and firing a OneSignal push notification all via one endpoint.

Endpoint requirements

• URL: https://{website_name}/wp-json/insert-email-push-post/v1/initiate
• Request: POST
• Headers:

Authorization: base64_encode(trim(IEPP_AUTH_KEY, " "))
Content-Type: application/json

• Body:

{
    "title": "{title}",
    "content": "{content}",
    "author": "{author}",
    "footer": "{footer}"
}