import logging
import regex
import aiohttp
import textwrap
import traceback
from discord import Activity
from typing import Optional, Union

class Utility:
    """Sing Utility"""
    def __init__(self) -> None:
        self.api_url: str = "http://127.0.0.1:52111/lyric/search"
        self.api_src: str = "DISC-HAVOC"
        
    def parse_song_input(self, song: Optional[str] = None,
                         activity: Optional[Activity] = None) -> Union[bool, tuple]:
        """
        Parse Song (Sing Command) Input
        
        Args:
            song (Optional[str]): Song to search
            activity (Optional[discord.Activity]): Discord activity, used to attempt lookup if no song is provided
        
        Returns:
            Union[bool, tuple]
        """
        try:
            if (not song or len(song) < 2) and not activity:
                return False
            if not song and activity:
                if not activity.name:
                    return False # No valid activity found
                match activity.name.lower():
                    case "codey toons" | "cider" | "sonixd":
                        search_artist: str = " ".join(str(activity.state)\
                            .strip().split(" ")[1:])
                        search_artist = regex.sub(r"(\s{0,})(\[(spotify|tidal|sonixd|browser|yt music)])$", "",
                                                       search_artist.strip(), flags=regex.IGNORECASE)
                        search_song = str(activity.details)
                        song = f"{search_artist} : {search_song}"
                    case "tidal hi-fi":
                        search_artist = str(activity.state)
                        search_song = str(activity.details)
                        song = f"{search_artist} : {search_song}"
                    case "spotify":
                        if not activity.title or not activity.artist: # type: ignore
                            """
                            Attributes exist, but mypy does not recognize them.  Ignored.
                            """
                            return False
                        search_artist = str(activity.title) # type: ignore
                        search_song = str(activity.artist) # type: ignore
                        song = f"{search_artist} : {search_song}"
                    case "serious.fm" | "cocks.fm" | "something":
                        if not activity.details:
                            song = str(activity.state)
                        else:
                            search_artist = str(activity.state)
                            search_song = str(activity.details)
                            song = f"{search_artist} : {search_song}"
                    case _:
                        return False # Unsupported activity detected
            
            search_split_by: str = ":" if not(song) or len(song.split(":")) > 1\
                else "-" # Support either : or - to separate artist/track
            if not song:
                return False
            search_artist = song.split(search_split_by)[0].strip()
            search_song = "".join(song.split(search_split_by)[1:]).strip()
            search_subsearch: Optional[str] = None
            if search_split_by == ":" and len(song.split(":")) > 2: # Support sub-search if : is used (per instructions)
                search_song = song.split(search_split_by)[1].strip() # Reduce search_song to only the 2nd split of : [the rest is meant to be lyric text]
                search_subsearch = "".join(song.split(search_split_by)[2:]) # Lyric text from split index 2 and beyond
            return (search_artist, search_song, search_subsearch)
        except:
            traceback.print_exc()
            return False
        
    async def lyric_search(self, artist: str, song: str,
                            sub: Optional[str] = None) -> Optional[list]:
        """
        Lyric Search
        
        Args:
            artist (str): Artist to search
            song (str): Song to search
            sub (Optional[str]): Lyrics for subsearch 
        Returns:
            Optional[list]
        """
        try:
            if not artist or not song:
                return [("FAIL! Artist/Song not provided",)]
            
            search_obj: dict = {
                'a': artist.strip(),
                's': song.strip(),
                'extra': True,
                'src': self.api_src,
            }
            
            if len(song.strip()) < 1:
                search_obj.pop('a')
                search_obj.pop('s')
                search_obj['t'] = artist.strip() # Parse failed, try title without sep
            
            if sub and len(sub) >= 2:
                search_obj['sub'] = sub.strip()
            
            async with aiohttp.ClientSession() as session:
                async with await session.post(self.api_url,
                                              json=search_obj,
                                              timeout=aiohttp.ClientTimeout(connect=5, sock_read=10)) as request:
                    request.raise_for_status()
                    response: dict = await request.json()
                    if response.get('err'):
                        return [(f"ERR: {response.get('errorText')}",)]
                    
                    out_lyrics = regex.sub(r'<br>', '\u200B\n', response.get('lyrics', ''))
                    response_obj: dict = {
                        'artist': response.get('artist'),
                        'song': response.get('song'),
                        'lyrics': out_lyrics,
                        'src': response.get('src'),
                        'confidence': float(response.get('confidence', 0.0)),
                        'time': float(response.get('time', -1.0)),
                    }
                    
                    lyrics = response_obj.get('lyrics')
                    if not lyrics:
                        return None
                    response_obj['lyrics'] = textwrap.wrap(text=lyrics.strip(),
                                                        width=4000, drop_whitespace=False,
                                                        replace_whitespace=False, break_long_words=True,
                                                        break_on_hyphens=True, max_lines=8)
                    response_obj['lyrics_short'] = textwrap.wrap(text=lyrics.strip(),
                                                        width=750, drop_whitespace=False,
                                                        replace_whitespace=False, break_long_words=True,
                                                        break_on_hyphens=True, max_lines=1)
                    
                    return [
                        (
                            response_obj.get('artist'), response_obj.get('song'), response_obj.get('src'),
                            f"{int(response_obj.get('confidence', -1.0))}%",
                            f"{response_obj.get('time', -666.0):.4f}s",
                        ),
                            response_obj.get('lyrics'),
                            response_obj.get('lyrics_short'),
                        ] 
        except Exception as e:
            traceback.print_exc()
            return [f"Retrieval failed: {str(e)}"]