APOD discord webhook

webhook.py

import requests
import json

webhook_url = "webhook_token"
apod_url = "https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY"
headers = {
    "Content-Type": "application/json",
}

embed_template = {
    "title": "",  # image title
    "description": "",  # description of the image
    # "url": "",  # url of the image
    "color": 11768220,
    "timestamp": "",  # a YYYY-MM-DD timestamp
    "footer": {
        "icon_url": "https://pbs.twimg.com/profile_images/19829782/apod_400x400.png",
        "text": "",  # copyright field on NASA's API (image's author)
    },
}


def construct_post(title, description, timestamp, author, image_url, video_url):
    embed = embed_template
    embed["title"] = title
    embed["description"] = description
    embed["timestamp"] = timestamp
    if author:
        embed["footer"]["text"] = author
    else:
        embed["footer"].pop("text")

    if image_url:
        embed["image"] = {
            "url": f"{image_url}"
        }  # f-strings because the json module is finicky and demands strings with double quotes (may be fixed in newer versions)

    post = {"embeds": [embed]}

    if video_url:  # do note it shouldn't be possible to have both image and video
        post["content"] = f"{video_url}"

    return json.dumps(post).encode("utf-8")


def todays_pic():
    res = requests.get(apod_url)
    # we stop everything if the request failed or we can't parse the result (res) as JSON
    # hence it is not necessary to gracefully handle exceptions
    json_res = res.json()
    if json_res["service_version"] != "v1":
        raise ValueError("API version if not compatible")

    return json_res


def parse_apod(data):
    if "copyright" in data:
        author = data["copyright"]
    else:
        author = None

    timestamp = data["date"]
    title = data["title"]

    description = data["explanation"]

    if data["media_type"] == "image":
        video_url = None
        if "hdurl" in data:
            image_url = data["hdurl"]
        else:
            image_url = data["url"]

    elif data["media_type"] == "video":
        image_url = None
        video_url = data["url"]

    else:
        raise ValueError("Media type was neither image nor video")

    return title, description, timestamp, author, image_url, video_url


def post_to_discord(message):
    res = requests.post(webhook_url, data=message, headers=headers)


def post_latest():
    post = construct_post(*parse_apod(todays_pic()))
    res = post_to_discord(post)


post_latest()

Naive discord webhook which posts the latest entry from https://apod.nasa.gov/ (requires python>=3.6 and requests).