lair.moe/blueprints/risdeveau/__init__.py

import os
import magic
from pathlib import Path
from htmlmin import minify
from datetime import datetime, timedelta
from musicbrainzngs import get_image_front
from flask import (
    Blueprint,
    render_template,
    send_file,
    send_from_directory,
    make_response,
    abort,
)

from .modules.api.lb import listens, listening

bp = Blueprint(
    "risdeveau",
    __name__,
    subdomain="risdeveau",
    template_folder="..",
    static_folder=None
)

def render_tmpl(filename: str, **kwargs) -> str:
    template_path = os.path.join("risdeveau/templates", filename)
    return minify(
        render_template(template_path, **kwargs),
        remove_empty_space=True
    )

@bp.route("/static/<path:filename>")
def static(filename: str):
    static_folders = ("static", "../root/static")
    for dir in static_folders:
        if os.path.exists(path := os.path.join("blueprints/risdeveau", dir, filename)):
            return send_file(path)
    return abort(404)

@bp.route("/asset/mb/<mbid>")
def mb_cover(mbid):
    r = make_response(image := get_image_front(mbid, "250"))
    r.headers['Content-Type'] = magic.from_buffer(image[:2048], mime=True)
    r.headers['Cache-Control'] = 'public, max-age=86400'
    r.headers['Expires'] = (datetime.now() + timedelta(days=1)) \
        .strftime('%a, %d %b %Y %H:%M:%S GMT')
    return r

@bp.route("/")
def index():
    return render_tmpl('index.html', lb=listens, lb_now=listening)