# config.py
# Fetches config from subreddit wiki page in YAML format
import yaml

def fetch_config_from_wiki(reddit, subreddit_name, wiki_page):
    """
    Fetches config from the wiki page as YAML.
    Returns the parsed config dict, or empty dict if error.
    """
    subreddit = reddit.subreddit(subreddit_name)
    try:
        wiki = subreddit.wiki[wiki_page]
        config_text = wiki.content_md
        config = yaml.safe_load(config_text)
        
        # If config is None or empty, return empty dict
        if not config:
            config = {'posts': []}
        
        return config
    except yaml.YAMLError as e:
        print(f"Error parsing YAML config from wiki: {e}")
        return {'posts': []}
    except Exception as e:
        print(f"Error fetching config from wiki: {e}")
        return {'posts': []}


def validate_config_from_wiki(reddit, subreddit_name, wiki_page):
    """
    Validates the config from the wiki page.
    Returns True if the config is valid YAML with 'posts' key, False otherwise.
    """
    subreddit = reddit.subreddit(subreddit_name)
    try:
        wiki = subreddit.wiki[wiki_page]
        config_text = wiki.content_md
        config = yaml.safe_load(config_text)
        
        # Validate required structure
        if not isinstance(config, dict) or 'posts' not in config:
            print("Wiki config missing required 'posts' key or is not a dict.")
            return False
        
        return True
    except yaml.YAMLError as e:
        print(f"Error parsing YAML config from wiki: {e}")
        return False
    except Exception as e:
        print(f"Error fetching config from wiki: {e}")
        return False


def get_trigger_posts(reddit, subreddit_name, wiki_page, trigger_name):
    """
    Gets the posts associated with a specific trigger.
    Returns a list of post dicts, or empty list if trigger not found.
    """
    config = fetch_config_from_wiki(reddit, subreddit_name, wiki_page)
    
    posts_config = config.get('posts', [])
    if not isinstance(posts_config, list):
        print("Config 'posts' is not a list.")
        return []
    
    for post_config in posts_config:
        if not isinstance(post_config, dict):
            continue
        
        if post_config.get('trigger', '').lower() == trigger_name.lower():
            # Get the posts for this trigger
            trigger_posts = post_config.get('posts', [])
            if not isinstance(trigger_posts, list):
                print(f"Trigger '{trigger_name}' posts is not a list.")
                return []
            
            return trigger_posts
    
    # Trigger not found
    print(f"Trigger '{trigger_name}' not found in config.")
    return []