import os
from datetime import datetime
from zoneinfo import ZoneInfo

import markdown
from app import db
from models.postmodel import Post
from sqlalchemy.exc import (DatabaseError, DataError, IntegrityError,
                            InterfaceError, InvalidRequestError)


def schedule_post(request):
    print("Posted file: {}".format(request.files["file"]))
    print(request.headers)
    if "file" in request.files:
        print("file found")
        return _schedule_file(request)
    if request.form["text"]:
        print("text found")
        return _schedule_text(request)

    return "no correct header found"


def _schedule_file(request):
    file = request.files["file"]
    file_str_contents = file.read().decode("utf-8")
    html = markdown.markdown(file_str_contents)
    _save_to_database(html)
    return "file post scheduled"


def _schedule_text(request):
    print(request.form["text"])
    text = request.form["text"]
    content = f"<p>{text}</p>"
    _save_to_database(content)
    return "text post scheduled"


def _save_to_database(content):
    try:
        zoneinfo = ZoneInfo("Europe/Berlin")
        post = Post(
            content=content,
            last_updated=datetime.now().astimezone(tz=zoneinfo),
            scheduled_time=datetime.now().astimezone(tz=zoneinfo),
        )
        db.session.add(post)
        db.session.commit()

    except (
        IntegrityError,
        InvalidRequestError,
        DataError,
        InterfaceError,
        DatabaseError,
    ):
        db.session.rollback()