import os
from datetime import datetime
from typing import Any, Dict, List, Tuple

import praw

from utilities.my_logger import setup_logger

# Setup logging
logger = setup_logger(__name__)

# Get subreddit
subreddit_var = os.getenv("SUBREDDIT")
reddit_pull_limit = int(os.getenv("REDDIT_PULL_LIMIT"))


def get_reddit_instance() -> praw.Reddit:
    """Initialize and return a Reddit instance using PRAW."""
    return praw.Reddit(
            client_id=os.getenv('REDDIT_CLIENT_ID'),
            client_secret=os.getenv('REDDIT_CLIENT_SECRET'),
            user_agent=os.getenv('REDDIT_USER_AGENT'),
            ratelimit_seconds=20,
            )


def extract_submission_data(submission: praw.models.Submission) -> Dict[str, Any]:
    """Extract and return relevant data from a given Reddit submission."""
    return {
        "content": submission.selftext,
        "poster": str(submission.author),
        "date_utc": datetime.utcfromtimestamp(submission.created_utc).strftime('%Y-%m-%d %H:%M:%S'),
        "flair": submission.link_flair_text,
        "title": submission.title,
        "score": submission.ups,
        "permalink": submission.permalink,
        "nsfw": submission.over_18,
        }

def extract_comment_data(comment: praw.models.Comment) -> Dict[str, Any]:
    """Extract and return relevant data from a given Reddit comment"""
    return {
        'content': comment.body,
        'poster': str(comment.author),
        'date_utc': datetime.utcfromtimestamp(comment.created_utc).strftime('%Y-%m-%d %H:%M:%S'),
        'flair': comment.author_flair_text,
        'ups': comment.ups,
        'score': comment.score,
        'permalink': comment.permalink,
        'depth': comment.depth,
        'link_id': comment.link_id,
        'parent_id': comment.parent_id,
        'id': comment.id
    }


def praw_downloader() -> Tuple[List[Dict[str, str]]]:
    """Main function to extract and save all submissions from the subreddit."""
    reddit = get_reddit_instance()
    subreddit = reddit.subreddit(subreddit_var)

    logger.info(f'Starting to fetch submissions from {os.getenv("SUBREDDIT")}.')

    submissions = []
    comments_list = []
    for submission in subreddit.new(limit=reddit_pull_limit):  # Set limit=None to get all posts
        # logger.debug(f'Processing post {submission.id} - {submission.title}')
        data = extract_submission_data(submission)
        while True:
            comments = submission.comments
            print('last comment')
            try:
                print(comments[-1])
                print('Replace more and show last')
                print(comments.replace_more()[-1])
                print('Opening more comments...')
            except:
                print('Opened all comments for post: ', submission.title)
                comments = comments.list()
                break
        for comment in comments:
            comments_list.append(extract_comment_data(comment))
        submissions.append(data)

    logger.info(f'Finished downloading {len(submissions)} submissions, {len(comments_list)} comments')
    return submissions, comments_list


if __name__ == "__main__":
    praw_downloader()