from subprocess import run

from flask import Flask, request
from jinja2 import Environment, FileSystemLoader

app = Flask(__name__)

tpl_env = Environment(loader=FileSystemLoader("templates"))


@app.route("/api/render/<name>", methods=["POST"])
def render_template(name):
    template = tpl_env.get_template(f"{name}.scad.j2")
    parameters = request.get_json()
    scad_source = template.render(parameters)
    proc = run(
        ["openscad", "-", "-o", "-", "--hardwarnings", "--export-format", "stl"],
        input=scad_source.encode("utf-8"),
        capture_output=True,
    )
    if proc.returncode == 0:
        return proc.stdout
    else:
        return proc.stderr, 500