from flask import url_for
from .models import Posts, Threads

def get_post_url(post_id, _anchor=False, external=False):
    post = Posts.find({'id': post_id})
    if not post:
        return ''

    thread = Threads.find({'id': post.thread_id})

    anchor = None if not _anchor else f'post-{post_id}'

    return url_for('threads.thread', slug=thread.slug, after=post_id, _external=external, _anchor=anchor)

def dict_to_query_string(d) -> str:
    return '?' + '&'.join([f'{key}={str(value)}' for key, value in d.items()])